This article focuses on cutting high-temperature alloy improvement measures for a full-length introduction, I hope it will be useful to you.
Cutting high-temperature alloy improvement measures
Countermeasures: selection of raw materials for cutting tools
① It is common to use cemented carbide tools, and high speed tool steel is used only for simplex surface production machining where the cutting rate is very low.
②When cutting with carbide tools, it is best to use the new model with the best characteristics, and the suitable CVD coatings are TiCN, TiCN+Al2O3+HfN, etc.
③When using high-speed tool steel tools, W10Mo4Cr4V2Al, W18Cr4siAlNb, W12Cr4V3Mo3Co5Si and other models can be used.
④In addition, silicon nitride ceramics are also suitable for semi-deep machining and deep machining of high-temperature alloys because of their higher anti-bonding force and temperature resistance and strength than cemented carbide.
⑤ PCBN tools are more suitable for continuous cutting production machining of high-temperature alloys because of their characteristics such as high toughness and high burnability.
Countermeasures: Selection of the main parameters of the geometric style of the tool
The main parameters of carbide lathe turning tool geometry type are adopted as follows
①Front angle: 5°~-15° when rough turning, 0°~5° when fine turning, 3°~5° when milling cast high temperature alloy
② Rear angle: 10°~14° when rough turning, 14°~18° when finishing, 10°~15° when milling cast high-temperature alloys
③On the main inclination angle: 45°~75° is generally used to reduce the radial cutting force. In the CNC lathe driving force and processing process system steel performance is accepted under the standard as far as possible using a smaller value
④Edge inclination angle rough turning -10 °, fine turning, in order to better manipulate the cutting flow into the surface to be produced processing, available 0 ° ~ 3 °
⑤ sharp knife arc half warp: for deformation high temperature alloy rough turning take 0.5 ~ 0.8 mm, when finishing 0.3 ~ 0.5 mm, for casting high temperature alloy to take 1 mm.