Saw Carbide development

1 Improved tool shape, improve cutting efficiency
  Improved tool shape from the point of view to consider, first tool rigidity of the material should be increased in order to increase the discharge amount per tooth chips.
(2) develop ultra-fine grain products, to achieve stable machining
Related to high-speed milling technology point of view, high-speed milling requires tools used must have high abrasion resistance, heat resistance and good toughness. Based on this, carbide end concrete cutting blade  mills new products continue to emerge, such ultra-fine grain carbide end mills used as matrix materials and conduct composite coating processing, the cutting performance is greatly improved.
Ultra-fine grain carbide is raw material for further miniaturization of the particles, the average particle size of 1μm or less, and some even as small as several nm, which can improve the flexural strength, so that it has a very excellent toughness. In turning, when the diameter of the material to be processed is small, or very small diameter end mills, because speed is limited, it is difficult for high-speed cutting. Using conventional carbide tools, easy to produce chipping, while the use of ultra-fine grain carbide cutting tools, because toughness is high, and on the cutting edge of the tool can be made large rake angle, so get a good surface finish roughness.
3 emphasis coating technology
  Coating is an effective means to  12 inch saw blade improve cutting performance, companies have attached great importance to this. In coating technology, currently has a single layer to multilayer development, combining different coating materials for overlapping multilayer coating, which can effectively improve the tool cutting performance. For example, the outermost layer coated with TiN, can reduce friction with the chip; second layer is coated Al2O3, can improve the tool in front of anti-adhesion and anti-wear properties; third layer is coated TiCN, to improve the anti-wear and anti-back front wear performance.
Tool surface coating multilayer coating, the hardness of up to 2500 ~ 3000HV, heat resistance has also been greatly improved, even if cutting temperature reaches 850 ~ 900 ℃ high temperature, tool material will still not be oxidized, and maintain good hardness. Multilayer coating can improve the toughness, the surface of the tool difficult to flap wheels  extend to the internal crack, therefore, can effectively prevent the generation of chipping.
The coating materials, TiC and TiN coating for high-speed cutting of steel, diamond and CBN coating has reached a practical level. The most notable is the diamond coating, in the cutting process, as the temperature rises, diamond easily decomposed into graphite, therefore, can not be used with carbon steel machining, diamond coated tool is mainly used for aluminum light alloy high-speed high-precision machining of materials.