How to choose diamond core drills according to different uses

DrillWe drill is widely used in construction machinery hardware, it is used in the drilling of solid material through holes or blind holes , and is able to have the hole reaming tools. However, we choose different operating environments are also different types of drill bits , drill bits used mainly twist , flat drill, center drill , deep hole drilling and core drill . Reamer and countersink drill , although not on the physical material drilling, but the habit will also drill them into a class . Here , together with Xiaobian look at different types of drill bits for different uses of it .
Twist is the most widely -processing tool . Diameter in the GUSHI concrete polishing pads  range of usually 0.25 to 80 mm . It is mainly composed of a working portion and a shank portion . Working part has two spiral grooves , the shape of cannabis, hence the name. In order to reduce the wall of the guide portion and the hole drilling friction , twist from the direction of the drill tip to gradually reduce the diameter of the shank inverted cone . Twist the helix angle corner came mainly affect the size of the cutting edge , edge flap strength and chip performance , typically 25 ° ~ 32 °. Available spiral groove milling, grinding , hot rolling or hot extrusion processing methods , the cutting portion is formed by sharpening the drill tip . Vertex standard twist drill cutting part 118 , chisel edge angle is 40 ° ~ 60 °, the angle of 8 ° ~ 20 °. For structural reasons , the rake angle at the outer edge of the large decreases toward the middle , chisel at a negative rake angle ( up to about -55 °), from the squeezing action when drilling . In order to improve the cutting twist drill , according to the nature of the material to be machined and ground into the cutting portion of the repair various shapes ( such as drilling group ) . There shank twist and form two straight shank taper shank , when caught in the drill chuck machining the former , the latter is inserted in the machine spindle or tailstock taper in . General manufacturing HSS twist drill . Inserts welded carbide blade or twist the crown for machining cast  GUSHI tile cutting blades iron , hardened steel and non-metallic materials , solid carbide twist drills for machining small parts and printed circuit boards and other instrumentation .
Flat diamond cutting part Spade, simple structure, low cost, easy to import coolant hole, but cutting and chip performance is poor . Flat structure with integral drilled and assembled two. Integral mainly for drilling diameter of 0.03 to 0.5 mm pores . Fabricated flat diamond blade can be changed, the cooling can be mainly used for drilling large diameter holes 25 to 500 millimeters.
Deep hole drilling process usually refers to the ratio of the aperture hole depth and hole cutter more than 6 . Commonly used gun drilling , BTA deep hole drilling, jet drilling , DF deep hole drilling. Nesting also commonly used in deep hole drilling process .
The reamer 3 to 4 teeth , better rigidity than the  GUSHI cutting discs twist drill , a hole has been used to expand and improve the machining accuracy and finish .
Countersink drill has more teeth to the hole forming method will be processed into the desired shape of the end for the processing of various countersunk head screws countersunk holes , or outer end face flattened hole.
Center drill for drilling shaft center hole with a piece , which is essentially a small twist of the helix angle drill and countersink compounded , so called composite center drill.
Hollow drill drill drill pipe is hollow in the middle , the main material used for core drilling .

Some simple introduction diamomd core drill bits for

Twist is fixed by rotating the cutting axis relative to the workpiece hole drilling tools. Its capacity and shape into a spiral flute twist named. Helical groove has two grooves, slots or more grooves 3, but the most common two grooves.
  Limiting aperture diameter twist drill by  GUSHI concrete saws the spiral groove to make finer core drilling, drill bit low stiffness; only two edges with guide, easily skewed axis of the hole; chisel difficult to make a centering axial resistance increases, drill easy to swing. Therefore, the drilled hole shape and position errors. Twist the flank and rake face is curved along the main cutting edge the rake angle at each point, the angle  GUSHI metal grinding wheel is not the same as the front transverse edge of the corner of -55 °. Cutting conditions are poor; distribution along the cutting edge of the cutting speed is unreasonable, the maximum intensity of the lowest point of a sword cutting so badly worn. Therefore, the hole machining accuracy is low. The whole cutting edge of the drill cutting edges participants, each point on the cutting edge not equal, the chip is easy to form a spiral, chip difficult.
  Therefore, chips and the hole wall  GUSHI diamond discs friction extrusion often scratch the cell walls, a low surface roughness after processing.

Select abrasive wet cutting method and cutting pieces

Wet abrasive grinding wheel cutting method commonly used for cutting, according to the material to be cut , it may need to use a grinding wheel with different ingredients. Grinding wheel will be affected by the choice of material hardness and toughness .
Wet Wet abrasive cutting method abrasive grinding wheel cutting method commonly used for cutting, grinding wheel abrasive and adhesive. When cutting , the grinding wheel with coolant flushing to prevent damage to the specimen due to frictional heat . The cooling fluid also remove chips cut area. Select the grinding wheel wheels
According to the material  concrete saws to be cut , you may need to use a grinding wheel with different ingredients. Grinding wheel will be affected by the choice of material hardness and toughness . Split carbide ceramic or diamond bonded materials should be chosen from the phenolic binder made ​​of metal or cutting disc . Using phenolic adhesive bonding of aluminum oxide (Al2O3) grinding wheel is a typical choice of black metal material cutting . Cubic boron nitride (CBN) are increasingly used in higher hardness cutting ferrous materials . Non-ferrous metal cutting should be selected by the phenolic adhesive bonding of silicon carbide (SIC) grinding wheel . Cutting wheel design
Grinding wheel designs should be considered in addition to grains , we must also consider the difference between diamond / CBN cutting disc cutting discs and SiC/Al2O3 between . Due to high hardness and abrasive with a durable adhesive fixed abrasive , diamond cutting wheel CBN / performance is very durable . Metal disc perimeter ( continuous rim ) just stick a thin layer of abrasive. These are long-term consumable cutting wheel cutting disc . SiC and Al2O3, and other abrasive wear relatively fast , relatively inexpensive . Thus, the entire body from abrasive grinding wheel and a binder . This cutting wheel cutting disc is called self- consumption . Characteristics cut pieces
Long-term consumption of cut pieces ceramic tile saw from the cutting long pieces generally consumable diamond cutting discs , diamond cutting discs there are two to choose from , they use different abrasive binders - A cutting pieces of metal adhesives, other kinds of phenolic adhesive is applied . Both can be used for cutting sheet cutting extremely hard materials. Higher metal adhesive applied to the brittle materials such as ceramics. Phenolic binder is capable CBN cutting materials like carbide cutting wheel just Bakelite adhesive types available , suitable for cutting extremely hard white cast iron and other ferrous materials . Consumable consumable cutting disc grinding wheel cutting disc generally , this cutting sheet cutting characteristics  concrete saws with different adhesive properties vary . According adhesive " hardness" or abrasive capacity retention or discarding divided into different categories . Abrasive ability to maintain " rigid " grinding wheel is better than " soft " grinding wheel . " Soft " grinding wheel for cutting hard , brittle materials , because this grinding wheel will break down with the lower hardness binders , continue to add new , sharp abrasive . When cutting soft and ductile materials , adhesives should choose a higher hardness grinding wheel . Further , the higher the hardness of the adhesive wear of the cutting wheel is slower , and therefore more economical. Select the correct cut for the particular sheet material is very important. Only the correct cutting disc to ensure that small amount of deformation , smooth surface . After cutting the higher surface quality , the speed required for the preparation of the results obtained faster .

Electroplated diamond grinding wheel defects exist

Electroplated diamond grinding wheel defects exist :
1 , using a large positive rake angle machining, tool wear serious , cutting vibration is large, and the substrate and  diamomd core drill bits the coating metal surfaces are not kept firmly binding the abrasive chemical metallurgical bonding , actually only be mechanically entrapped abrasive coating metal mosaic , thus dominated force is small ;
2, the diamond particles heavier load efficiency, for processing efficiency, processing quality , processing costs, and a great influence on the grinding tool life easy to fall off ( or plating flaking ) and lead to an overall failure ;
3 , to increase the holding force Edge 2000 Pads  must be increased coating thickness , and the results highly abrasive bare chip space is reduced, wheel prone to clogging , the cooling effect is poor, prone to burn the workpiece surface ;
4 , the current domestic electroplated grinding wheel manufacturing has not been achieved by optimized processing conditions required to design the best grinding wheel topography, in the domestic diamond coating technology is still in its infancy , as well as the cost of  diamond cbn wheel inputs are big , so in the near future diamond coating there is not much development ;
5, the tool angle change on the tool wear, cutting force and cutting vibration is rake angle , clearance angle and helix angle integrated generated , so the choice we must pay more attention to single-layer electroplated diamond grinding wheel will be significantly restricted these inherent drawbacks its efficient grinding applications .

With what blade cutting plywood

As users have become increasingly demanding and industrial , but also in the field of homeopathy cutting plywood born professional plywood blades. It is generally used plywood blade outer diameter grinding cup wheels  of the saw blade specifications are 250,300 , usually teeth in 80T, 100T, 120T. That in the end Plywood Saw What difference does ?
Traditional plywood blade for general use around the tooth , so cutting efficiency and speed, but only applied to less demanding cutting plywood processing . So professional plywood blade adjustments according to market demand toothed blade and cutting efficiency .
 First, the choice of the cutting blade should choose chrome or nitrided HSS film , some saw after deposition , the diamond blade saws  steel plate heated and deformed or even beat way through the steel sheet flatten again after cutting Poetry time will again deformed steel , chrome HSS film is specifically designed for stainless steel characteristics for stainless steel cutting .
Second, the cutting machine 300 or more should be selected models, the power can not be too small , the choice of  core bits for concrete the cutting speed , the workpiece to be cut should be based on the type of cross-section and toughness to be. Higher cutting speed , cutting the temperature will be higher. Toughness of the material , the speed slowly ; workpiece cross-section is relatively large, then the speed should be slow . Finally, the cutting temperature will have a great time , cutting fluids, cooling, lubrication and cleaning of the choice of cutting results also play a significant role. The cutting fluid used are mineral oils, vegetable oils , emulsions , etc. , depending on the selected parts for cutting fluid.

[ Alloy saw brand ] diamond saw cutting knowledge

1 , idle : in particular, the first use of a new base , the need to idle for about 30 minutes , the summer hot season needs to bring water idling , which aims to further eliminate welding head when matrix effects and enhanced blade rotating at high speed state to maintain the intrinsic quality of memory.
2 , blocks of not less than 0.5m3, and  carbide tipped saw blade placed securely , the bottom should be well- wood pad , plug SUCOOT prison , blocks should be located in symmetrical positions workbench , workbench cars and blocks to ensure the stability , without shaking , shaking phenomenon .
3 , according to the blocks of length, width, height adjusting limit switch, the blade lift and skip the trip in a reliable and effective range. Saw blade should leave before sawing blocks up to 10 ~ 20mm. After sawing , saw cut should be left away from the blocks at the bottom of 20-40mm, knife blade to go about running , you should exit all blocks Jukou  the blade from not less than 150-200mm, to prevent the blade hit Shortage material .
4 , the blade idling stable only after a trial cut  turbo diamond blade blocks are not allowed contact with the blade starts cutting edge blade , cutting blade rotation are not allowed to stop , to withdraw Jukou before stalling .
5 , cutting blocks are shaking if found should immediately stop cutting the blocks to be firmly fixed before it can continue working , cutting , are not allowed to move in any blocks.
6 , the cutting blade and  hole saw blades found a significant slowdown or even clip knife phenomenon , it may be belt slippage , compression nut loose or too large depth of cut , the cutting speed is too fast and other reasons, should be timely adjusted .
7 , the line speed should be processed stone hardness and wear resistance to adapt, line speed table are recommended cutting different types of stone .

diamonds expensive reason

At present, the reason why diamonds are expensive, and their characteristics are inseparable.First, the diamond hardness, high density. Diamond is the hardest natural substance known, Mohs hardness of 10. The density of 3.52 over its most natural stones, and very stable. The tile saw blade  nature of gravity separation and identification are very important.In addition, the diamond will not only have a high refractive index, but also has a higher dispersion. These two factors, making the diamond cutting and grinding after the show dazzling bright light.
There is a high thermal conductivity of diamond, and its thermal conductivity of copper five times. Designed for the application of this tct saw blades  principle can be used to identify the thermal conductivity meter diamond imitation. Some natural blueDiamond, boron element because, further comprising electrically conductive properties.Diamonds are very stable, temperature changes with minimal impact on its size, it does not react with the acid and alkali.Diamond has the lipophilicity of this nature commonly used in diamond sorting; surface of the water droplets in the diamond shape cutting tools  and will not spread, this property can be used for the identification of diamonds and imitation.High hardness and stable chemical properties make the beauty of the diamond and the environment will not change over time, which is able to increase the value of the diamond foundation. Diamond formed under harsh conditions so scarce reserves, and is non-renewable resources. Into the global market each year are affected by De beers diamond company strictly controlled. The so-called rare

With an innovative way of producing blade

New era, woodworking equipment are no longer simple tasks such as drilling, open cutting operations such simple processes a single device , the traditional diamond saw only some of the standard process  sds plus drill bits stages , reaching effort, time effect , " If you look at appliances, electronics, communications equipment manufacturing plant category , you will find their manufacturing equipment, automation and intelligence to be much more advanced than the furniture , especially in the field of automobile manufacturing , machinery automation can be said to represent the top level, it is also affected by these industries , we have stepped up the development of new processing equipment, woodworking efforts, through numerical control , industrial as well as a more advanced network automation and control , making carving, drilling, cutting and other processes more precise , to achieve a more much shaped timber processing, manufacturing companies to better meet the individual needs of production . "
 Although there are still some manufacturers tend to choose the import of foreign equipment, domestic equipment is also true in the machining accuracy slightly inferior to foreign countries, and  4 inch circular saw blade some high-end machinery automation technology abroad China strictly technical monopolies still exist , but the current woodworking machinery and equipment undoubtedly constantly upgraded. Compared to the imported equipment , HE Pei Liu said that the domestic than foreign equipment has several advantages : first, in terms of price , Chinese equipment in the freight and manufacturing costs, etc. is better than abroad , more likely to be a wider range of manufacturing enterprises to accept ; Secondly, in the repair and maintenance areas , post- basic domestic repairs are free , and can respond quickly to the factory to save valuable production time ; addition , more and more need to rely on post- automation equipment and other technical support to upgrade the overall , single in this regard , foreign upgrade cost is quite high . "Because of geography, and other different manufacturing environments , resulting in the use of foreign equipment in the factory various inconveniences , does not tamping rammer  necessarily apply to all domestic manufacturers, domestic equipment suppliers closer to the market , a better understanding of plant usage and real needs better able to provide equipment and related services . "
We believe that it is diamond saw blade production level with the world 's advanced level there are still gaps, to promote the healthy development of the industry , companies must be honest self-discipline, strengthen brand building.

monocrystalline tool design and application

 Carbon atoms, a single diamond crystal, the crystal structure of the highest density of metal atom such as axial face-centered cubic crystal. Diamond crystal connected between the carbon atoms bond to sp3 hybridized covalent bond, with a strong binding force, stability and  sds plus drill bits direction. The unique crystal structure of diamond in nature it has the highest hardness, stiffness, refractive index and thermal conductivity, and high wear resistance, corrosion resistance and chemical stability.
Excellent characteristics of single crystal diamond meet the precision and ultra-precision cutting tool material for most of the requirements and is ideal for precision cutting tool materials. Diamond without internal grain boundaries uniform crystal structure so that the tool cutting edge can theoretically reach the atomic level flatness and sharpness, cut thin cutting ability, high precision, cutting force is small; their high hardness and good wear resistance resistance, corrosion resistance and chemical stability can ensure that the tool has a long life, so that it can continue for a long time of cutting, the tool wear can be reduced because of the  diamond discs precision of the parts; its high thermal conductivity can be reduced and the cutting temperature parts thermal deformation.
Single crystal diamond tool in the machining field has an important position, is widely used as a mirror, missiles and rockets navigation gyro, computer hard disk substrate accelerator electron gun, such as ultra precision mirror of parts. Can also be used in the manufacture of single crystal diamond eye, brain surgeon's scalpel, thin slicing knives and other bio-medical tools. In addition, single-crystal diamond tool in civilian products processing applications are becoming increasingly widespread, from watch parts, aluminum  wet saw blades pistons, jewelry and other processing to pens, high-gloss mirror decorative signs and non-ferrous metal parts processing, its application has entered the machining a variety of areas.

selection of ceramic tile eight note

Glazed glaze should be smooth and delicate; shiny surface should be crystal clear glossy, matte should be soft and comfortable. A few pieces of ceramic tile color will fight together, look carefully at the light, a good product color is very small, consistent color between products; rather bad products larger color, color shades between the products.
Specifications available bandsaw blades  caliper measurements. Good product specification deviation is small, after paving the product uniform, cracks between the blocks straight, good decorative effect. Poor product specifications large deviation between products of varying sizes. Deformation can be visually observed directly. Requirements products side face flat, so that the product of small deformation, convenient construction, after paving brick flat appearance.
Pattern color patterns to detailed, realistic, there is no obvious lack of color, disconnection, dislocation and other defects.
Hue hue outside the wall should be concrete cutting blade  in harmony with the surrounding environment, high-rise buildings generally should not use a white or light-colored wall decorative bricks too, in order to avoid the building lacks texture; in interior, floor tiles and wall tiles tones To support each other. To sanitary ware bathroom complete the main floor tiles and a variety of accessories, including hardware and other supporting materials, quality, grade should be its coherence.
Durability of ceramic tiles paving after a long time without cracking, no distortion, no smoke pollution. You can use the following simple method to determine: ink drops in the back of the product to see whether the ink automatically spread. In general, the slower the ink spread, the water absorption of the smaller, more excellent  turbo diamond blade intrinsic quality, durable products the better; otherwise perishable products the worse.
Anti-skid ceramic tiles skid resistance is very important. Generally in the bathroom and kitchen bathing place should be selected with anti-skid ceramic tiles.

must make sure the saw table properties

1. Please alloy blades vertically hanging drying rack, be sure to avoid the damp places, do not place alloy blade flat on the floor or on a shelf, flat will lead alloy blade deformation.
2. When used, do not exceed the specified maximum speed.
3. When used, it must take protective mask, gloves, helmets, safety shoes, safety glasses.
4. The installation diamond blade circular saw  Alloy saw, must make sure the saw table properties, uses, it is best to read the manual saw table. In order to avoid loading the wrong, causing an accident.
5. The installation Alloy saw, must first check whether there is a split alloy saw blade, distort, fill level, lost teeth and other phenomena, and then install it.
6. Superhard alloy sharp serrated blade, prohibit the collision, fall to the ground, you must gently.
7. Zhuangwan alloy saw blade, you must confirm whether the center hole of the blade firmly fixed on the saw table flange, a gasket must be good washer; Then, gently turn the hand to promote the saw blade, confirmed Whether the eccentric shaking.
8. Must alloy saw cutting direction carbide tipped saw blade  indicated by the arrow direction of rotation aligned with the saw table. Do not install the opposite direction, the direction will lead out the wrong tooth installed.
9. Preroll time: Change alloy saw before use preroll one minute, let saw table into the working state, can be cut.
10. Before cutting, you must confirm whether the use of alloy saw the material being cut and consistent.
11. Cutting material must be gently cut into the normal operation of the blade material is prohibited Forced straining hard to push.
12. Ban reversed, inverted transfer lead out tooth, dangerous.
13. Use abnormal sound heard and saw abnormal shaking, cut not usually, immediately stop operation, find reason for the exception. Replacement blades.
14. Cutting, the prevention of sudden stop of the blade material is cut intermediate. Cutting was stopped at  concrete cutting blade the middle can cause jagged off, blade deformation.
15. After cutting please wipe the rust oil. Prevent blade rust.
16. When not sharp serrated teeth grinding again, you must get the manufacturers specify abrasive grinding technology, shop or store to grind. Otherwise it will damage the original zigzag angles to cutting accuracy and shorten the life of the blade.

How to choose a small toothed saw blade

⒈ most widely used around the teeth, fast cutting, grinding is relatively simple. For open crosscut various  diamond wire saw materials and soft and hard wood profiles and MDF, plywood, particle board, etc. Equipped with anti-rebound protection around the tooth tooth tooth is dovetail for longitudinal cutting of various sections of the plate with trees; around with a negative rake angle blade as sharp serrated teeth, sawing, good quality, usually used stickers panel sawing.
⒉ flat tooth saw cut is rough, the cutting speed is slow, grinding is the simplest. Mainly used for diamond hole saw  general cutting of wood, lower cost, and more for the smaller diameter aluminum blade to keep cutting reduce adhesion, or to keep the bottom blade for slotted flat.
⒊ ladder flat trapezoidal tooth peace teeth tooth is a combination of more complex grinding, sawing can be reduced veneer chipping, for a variety of single and double veneer plywood, fire board sawing. Aluminum blade to prevent adhesions also multi-purpose ladder flat tooth saw blade teeth more.
⒋ inverted ladder commonly used in the  tile cutter panel saw tooth bottom slot blade, in the double sawing plywood veneer, the groove bottom saw adjust the thickness to complete grooving, and then completed by the master saw sawing sheet to prevent Jukou appear chipping phenomenon.

determines the hardness of diamond diamond grinding disc status

 In recent years, with the rise of abrasives, more and more manufacturers began producing diamond grinding disc such cutting discs  products. Abrasives industry truly entered the domestic market should have some years, and diamond grinding disc is more prominent in the abrasives industry products, why would so love to get it, first of all we know that diamond is the hardest natural substance known to the material, the hardness of diamond hardness than the material of more than a Mohs hardness of 10, the tamping rammer  Vickers hardness up to 98GPa or more, the diamond is not just beyond the hardness, but also high compared to quartz, it has been great to 1000 times higher than corundum too high to 150 times. Especially the hardness of diamond also has real direction, from the top of these terms, it has been decided in the future development of diamond grinding disc importance of a good product must be subject to more and more people like it, especially the diamond grinding disc has such features, and let the abrasives industry can do better, of course, because the  cutoff wheel characteristics of the product, resulting in no cost to the price of the diamond grinding

diamond wheel advantages

1, with high cutting speed can be achieved with a high cutting speed can reach 100 100 - 300m / s 300m / s, and long service life.
2, using sintered diamond and boron nitride grinding wheel binder, binder for the multi-layer resin, metal and polishing pads for granite  ceramic, using sintered diamond and boron nitride grinding wheel binder, binder for the multi-layer resin, metal, and ceramics, the maximum diameter of up to the maximum diameter of up to 600mm600mm; electroplated diamond and CBN grinding wheel method, the maximum diameter; electroplated diamond and CBN grinding wheel method, the maximum diameter of up to 1300mm.
3, the wheel of the mechanical strength of the substrate can withstand the high speed grinding cutting forces. High-speed grinding, safe and grinding the substrate can withstand the Plate Compactor  high mechanical strength of the high cutting force during grinding. High-speed grinding, safety and reliability is extremely high.
4, the appearance of sharp, abrasive bump height, and that can accommodate a large number of long chips. Look sharp, abrasive bump height, and that can accommodate a large number of long chips.
5, high precision grinding, wear a long time, often without trimming, its accuracy can meet the  wet tile saw requirements of precision plus high precision grinding, wear a long time, often without trimming, its accuracy can meet the requirements of precision machining needs, can be avoided taper workpiece machining process, excellent wear resistance characteristics can enable enterprises to work needs to avoid processing the workpiece taper, excellent wear resistance characteristics of the enterprise can greatly reduce production costs.
6, multiple binding agent has a high wear resistance, minimal wheel wear.

Granite radioactive higher household interior decoration

 should be used with cautionDecoration Safety
Painted ventilation after release formaldehyde toxicity of coatings and paints mainly formaldehyde, benzene and  diamond cup wheels other carcinogens, as well as lead, mercury,Cadmium and other harmful substances. Especially formaldehyde would cause serious damage to the respiratory system, primarily released from fine wood panels, paintedMaterials and paints are also present in small amounts. In addition, the interior paint of waterborne coatings and solvent-based paints are two pollutantsMainly solvent-based coatings, environmentally friendly water-based paint can be assured.
Done with caution granite interior
Stone hard, colorful, decorative effect, is used in flooring, windows and other places. Experts, ordinary peopleConcern over radioactive stone, in fact, do not "scared", no stone is radioactive, and some on the human body did notThere are hazards can be avoided as long as selected species.
Meanwhile, experts also remind, is mainly used for decorative stone marble, granite, from the national technical  cutting tools supervision departmentsSampling results from around the stone, marble basically qualified radiological examination results, and peace of mind; but put graniteShot higher, exceeding more categories.
It is understood that after the granite of radium radon gas produced --- If the body has long been attracted to accumulate, it will raiseHigh incidence of lung cancer.
Note ceiling flame flammable materials
A public consultation stage to say, home ceiling dark tank electrical short circuit, kindled a fire, the ceiling is difficult to extinguishFire, wood trim board is also flammable, almost led to disaster. Decoration Precautions
1. Coatings and paints toxicity is mainly formaldehyde, benzene and other carcinogens, as well as lead, mercury, cadmium and other harmful substances. Therefore, Brushing paint must be ventilated after release.
2. Any stone has radioactive, and some 9 inch saw blade  did not harm the human body, as long as you can avoid selecting species.
3. Try not flammable, combustible materials, decoration; if it is to use, fire-retardant treatment must be done.
Household Fire Knowledge
Find the home gas leak, do not immediately call house phone, turn lights, etc., but should immediately turn off the main gas valveOpen the doors and windows ventilation.

binding site of the substrate

Cause: The cut material is very resistant, cutting debris mixed in the cut seam can not be discharged.
Workaround: Use the special metal grinding wheel  position of the substrate to protect the teeth, use a larger flow of cooling water pressure can enhance chip evacuation.
2 heads uneven wear on both sides
Cause: The blade tilt cutting; water is not the same on both sides, one side water shortage.
Solution: Check the blade tilt situation; Check the cooling water system.
3 out of round blade
Cause: The shaft wear cause the blade to a larger center hole and spindle clearance or not installed correctly.
Solution: replace or repair worn shaft center hole.
4 blade deflection
Cause: The material to be cut debris mixed in the crevices cut discontinuity caused by the body evenly; flange diameter is too small or both sides of the flange diameter is inconsistent; blade with flange mixed between a foreign body; not installed correctly.
Solution: clean up debris, and enhance chip evacuation; adjust or replace flange; follow the instructions to install correctly.
5 blade breakage
Cause: The head binders too hard; blade feeding speed is too fast.
Solution: According to the choice of materials to be cut with the blade softer binders; reduce the feed rate of the blade.
6 heads excessive wear and tear
Cause: The blade is too soft binder (for cut material); cooling water shortage; Since the drive belt loose or low voltage caused or inappropriate speed is insufficient power; saw blade is not perpendicular to the material being cut.
Workaround: Depending on choice of materials to be cut using a hard binder blade; Check the  wet saw blades cooling water system to ensure the normal operation of the pump; ensure that the supply voltage; checking the spindle flange, saw blades and equipment to ensure verticality; checking the speed of the blade .
7 heads being lost
Reason: In the process of cutting material to be cut off by sliding head twisted; make heads been hit; flange wear can not be fixed blade, causing the blade twist; spindle wear and tear caused by the blade circular saw blade failure compared big impact; overheating; blade under severe attacks.
Workaround: firmly fixed to be cut when cutting materials; replace both sides of the flange; replace worn spindle; Check the cooling water; mobile devices Avoid bumping or cutting blade materials.
8 blunt, not cutting
Reason: Saw binders too hard; underpowered does not enable normal cutting blade, the blade cut is not applied enough pressure; blade wire speed is too high.
Solution: choose to use  ring saw blades a softer binder blade; checking belts, voltage and motor; determine and but big enough and the cut-in pressure; according to instructions of the device used to match the diameter of the corresponding blade.

alloy saw maintenance guide

Carbide saw blades in the transport and storage process, should be carried out to maintain the original packaging to avoid damage. Since carbide saw blade is extremely sharp, so use or transport should be protected to avoid being scratched blade. When stored dry storage environment must be guaranteed, and should avoid other possible factors for blade damage.
Second, the operation using the
1, the operator should use the  ceramic tile saw  necessary safety shields, to avoid accidents.
2 before using circular saw blades for inspection, if found significant blade can not be clearly discernable or other, affect the safe use should immediately stop using, such as: Discover blade cracks, deformation or other security factors; pending Check that professionals can use to use. Please use clean sharp blades.
3, refer to the device manufacturer's manual, operating instructions must be strictly in accordance with the proper installation and use of the blade; must strictly respect through the blade and the safe use of equipment rules; before cutting blade must be securely mounted. Not be used during installation and impact the way beat locking blades.
4, the correct use of the locking harmonize the blade flange diameter, flanges should be less than one-third of the blade to avoid unbalanced blade during use.
5, in the non-mechanical feeding method using climb milling machining can not add, to avoid danger. Must be properly specified equipment in accordance with the direction of rotation blade and install.
6, carbide saw blades can be used to match the equipment used, carbide saw blade can not be used to cut cement sandy material, unless otherwise stated.
7, the blade is less than the normal speed of progress Do not be cut, the blade speed can not exceed the  diamond bandsaw blades maximum allowable value and must strictly respect through equipment equipment manufacturer's instructions.
8, requires the use of adjustable ring, adjustable ring must be firmly bonded to the saw body, and can not be higher than the adjustable ring side saw the body, to ensure that even after installing adjustable ring mounted blade secure clamping fastening; adjustable ring must have a diameter large enough to Yasumasa good cooperation with the blade, without changing the center of the blade.
9, running before the device must be clean out all extraneous items, non-related personnel should stay away from this area, can not touch the blade during operation of other tools, installation tools or equipment parts, should ensure that all unsafe factors have been ruled out.
10, equipment operation throughout the ring saw blades  process must be someone on duty.
11, the workpiece, carefully check all parts, ensure that the workpiece is no impurities.
Third, the maintenance
A saw blade use for some time should always check and grinding.
2, when the thickness is less than 1mm serrated, the blade should not continue to use.
3, grinding blades, must be trained professionals.
4, for the repair of the blade, the blade prohibit any design changes.
5, do not use should pay attention to maintenance.

economic milling tool life

The main purpose is to make the rough metal removal rate reaches the maximum: As a matter of fact whether increased axial or radial feed to 3D surface machining, HSC will be severely affected by the  polishing pads for granite  constraints of technology, in order to improve the processing rate, only by increasing the cutting it. However, there will be other practical and technical constraints.
While increasing the axial and radial cutting depth, as well as increasing the feed rate (vf improve the  cutoff wheel speed does not necessarily improve the HSC cutting speed), should be able to help improve processing efficiency.
On the one hand, these milling processes a result, the efficiency of conventional milling is almost the same. On the other hand, in a certain cutting speeds increase the feed rate can cause the tool to improve feed rate per tooth, so increases the mechanical load on the cutter. Regardless of the selected cutting edge geometry and tool material to, in the process of cutting forces will have a relatively high, which in turn will increase the machine work environment.If both cutting forces associated with the cutting tools  arithmetic mean of the tool set, can be determined through testing, a cutting force of the tool contour reduced 23.5%. To maximize the output power of this spindle, the design with a cutting edge contour appears HPC roughing tool is an excellent choice.In addition to high-speed metal cutting and optimizing the use of shaft output power requirements and, in the economics of milling, the tool life is also a key factor.HPC milling is described as to meet the requirements to improve milling metal removal, which is to determine the potential performance of a process value of the key technologies.

the hollow drill cutting analysis of the impact of

Hollow drill bit is a more appropriate tool to use portable hole machining tool. However, due to the manufacturing process of the hollow drill bit more complex, and the blind holes can not be processed, so in the metal cutting process is not widely used, usually only in the wood band saw blades  processing of a number of large-diameter through-hole of the workpiece or a noble metal or drilling equipment used only when the power is limited . Since there is no standard hollow drill styling products, so most of the processing for special materials developed hollow drill bit is required.
We worked to develop a user for processing difficult materials special hollow drill bit. Code of material to be processed U-Mn, the main chemical components include: carbon (0.56% to 0.68%), manganese (1.35% to 1.65%), silicon (0.2% to 0.35%), etc.; tensile strength ≥ 882N/mm2, hardness and wear resistance are high. The drill is used in a 17mm thick material processing? 30 +0.5 mm hole, portable drilling rig power <1000w, requires drill life> 30min, drill material W6Mo5Gr4V2. In the development process of the hollow drill bit, drill through repeated adjustment of the design parameters and drilling tests to finalize drill geometry parameters: rake angle g = 12 °, clearance angle a = 9 °, vice posterior horn a1 = 3 ° .
Here's the design of the cutting hollow drill bit to make a brief analysis of the impact.
1, drill cutting rake angle change on the  cutting wheels impact of
Rake angle on the cutting force of the impact
The changes will affect the anterior horn of the chip material deformation, so that the cutting force change. Chip deformation greater cutting forces greater; chip deformation is smaller, the smaller the cutting force. This angle is 0 ° ~ 15 ° range of changes, the cutting force correction coefficient ranges from 1.18 to 1.
Rake angle drill durability against impact
Increasing the rake angle drill, makes the tip strength and thermal volume decreases, while the tip will affect the force. This angle is positive, the tip tensile stress; current angle is negative, the tip compressive stress. Such as the selection of the rake angle is too large, although the increased drill sharpness, reduced cutting forces, but the tip tensile stress suffered greater tip strength decreased, easily broken. In many drill cutting tests are due to excessive damage to the anterior horn. However, since the material to be machined high hardness and strength, coupled with a portable drill spindle and machine rigidity is low, such as the selection of the rake angle is too small, the increase in drilling cutting force causes the spindle vibration, vibration apparent machined surface pattern, drill durability will be reduced.
2, the posterior horn of the impact of changes on the drill cutting
After increasing flank angle can reduce the friction between the cutting material, reducing the surface of the extrusion process. However, if after the angle is too large, it will reduce the edge strength and heat dissipation.
Directly affects the size of the posterior horn drill durability. In the drilling process, the drill main wear to mechanical abrasion and wear of the phase change. Consider mechanical abrasion wear when cutting life is constant, the posterior horn of the larger cutting longer available; consider phase transition wear, after the drill angle increases cooling capacity will decrease. Bit wear, with the flank wear with a gradual widening gradually increase cutting power, heat generated by friction will gradually increase, the bit temperature, when the temperature rises to the bit phase transition temperature, the bit will appear rapid wear.
3, drill sharpening process on the impact of design
Hollow drill bit less dosage, processing small quantities, so the design should consider the drill process issues, as far as common machining equipment and tools used to achieve processing and grinding.
The rake chip out, so a direct impact on the shape of the rake face and chip performance chip shape. Used chips in the process of being squeezed and friction of the rake face, and further deformation. The 4 inch circular saw blade  maximum degree of deformation of the base metal chips and to slip along the rake face, the chips bottom length is longer, thereby forming a variety of crimp shape. When using a hollow drill bit and hope the chips into crumbs or ribbon cuttings, in order to facilitate chip removal. For ease of machining and grinding, must be designed for flat rake face, without chip breaking groove. Rake in use does not require re-grinding.
Hollow drill flank is most likely to re-grinding of the face, but also the fastest surface wear, so hollow drill flank grinding sharpening is achieved.
Deputy Vice flank divided into inner and outer flank minor flank. Heavy grinding perspective, re-grinding inner and outer flanks not easy to achieve, so minor flank shall be designed for a throwaway form.
Based on the above analysis, the hollow drill blade is designed in the form shown in Figure 1. Processing Practice has proved that the design can meet the requirements and tool regrinding requirements.
4, the cutting fluid used and the impact on the drill cutting
The main characteristics of the hollow drill processing hole of the core is not to be cut, thus cutting the hollow drill twist ratio was significantly reduced, the power required for drilling and cutting the heat generated is small.
High-speed steel drill with a hollow drill, because of the hardness of the bit processing area a great influence on the temperature, thus the drilling process must be cooled using a cooling fluid (eg without coolant, the start bit will wear the phase change and rapid wear of the main wear and tear). We started using an external spray cooling, but bit-position horizontal axis machining, the coolant is not easy to enter the drill blade portion, a large consumption of cooling fluid, the cooling effect is not ideal. The redesigned drill spindle structure change, the external spray cooling becomes an internal spray cooling, the cooling fluid from the hollow drill core join, the coolant can reach the cutting part of the drill, thereby significantly reducing coolant consumption, improved cooling effect.
5, the hollow drill bit to use effects
A well-designed hollow drill bit should also meet the requirements of the following aspects: ① easy to manufacture, to use common tools and common tooling; ② easy re-sharpening, grinding machine can be used for general sharpening; ③ high efficiency, long life; ④ low prices.
We have developed a hollow drill basically reached the above requirements. In actual use, drill durability is stable up to 50 minutes, the diameter tolerance, surface roughness, all reached the design requirements. Because only regrinding flank, posterior horn drill easier to control, in an ordinary grinder can be easily implemented on sharpening.

the life of high speed steel circular saw blades

In order to maximize the reduction of the consumption of high-speed steel circular saw blades, each blade reduces cutting costs, increase plant productivity, the actual situation of the sds hammer drill bits  following applications for the proposal wants to follow:
1, the new blade test run:
To ensure long life, so that circular saws with a new blade (or replace the blade after each grinding) have a full running-in process, the cutting begins within 10 minutes, reducing the feed rate is very necessary The. The next 10 minutes before gradually speed up;
2, cutting and feed rate:
Cutting speed depends on the concrete ring saw  material being cut sections and toughness, this is difficult for cutting stainless steel, high toughness of the material, the slower the speed is very beneficial to increase blade life. When the material cross section is small, can be an appropriate increase in engine speed;
3, correct and timely grinding blade:
Blade during operation, due to the  dry cut blades role of external forces, the blade pitch and yaw rate, stress, etc. has changed, so there will be larger road saws; surface roughness, clip blade and other phenomena; timely grinding blade, serrated blade to re-raise the angle, pitch accuracy, high-speed steel circular saw blades will increase the use of results;
4, you can judge sawdust observe the current state of cutting blade;
a, very fine sawdust or powdered cutting pressure indicates the size;
b, of a soft cut sawdust that overload;
c, long spiral wire sawdust expressed in good condition;