How to choose milling high-strength steel and ultra-high-strength steel, tool and geometric parameters?

High-strength steel and ultra-high-strength steel, high strength at room temperature tensile strength of 1470 MPa. After quenching the hardness of HRC35 or more, up to HRC58. Martensite, when the shear stress in the cutting of high strength, high temperature cutting, cutting disc,severe tool wear and and easily chipping or Unclamping. Milling should be selected high strength, impact resistance and heat resistance, good tool materials, such as high-performance high-speed steel and carbide, also can select a series of hot-pressing of Al2O2-TiC ceramic tool. High-speed steel cutter, optional high vanadium high-speed steel, high speed steel, cobalt-or aluminum-containing superhard for such W12Cr4V4Mo W2Mo9Cr4VCo8, W6Mo5Cr4V2Al. Selection of carbide tool materials should be selected high bending strength, hardness blade, such as SC30, YC40, SD15, YC35, YS25, 726,813, etc..

Select the tool geometry parameters, it is necessary to take full account of the characteristics of this steel cutting wheel the main angle should be reduced, increasing the nose radius, cutting deep anterior horn and feed should be less than 0 ° rake angle (high-speed steel cutter exception). Carbide and ceramic cutting edge of the tool should be chamfered to increase the strength of the cutting edge.