How to solve the problem of difficult to cut high temperature alloys?

23 November 2021

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

cut high temperature alloys


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.

cut high temperature alloys

The main parameters of a high-speed tool steel turning tool are as follows
①Front angle: 3°~12° when cutting deformed high-temperature alloy, 0°~5° when cutting cast high-temperature alloy
②After angle: 13 ° ~ 16 °
③Spiral angle: cylindrical iron cutter 45 °, alloy milling cutter 28 ° ~ 35 °
Tool dulling specifications can be cutting general stainless steel plate tool 1/3-1/2
Measures: cutting the amount of use of the selection
① Selection criteria are the same as cutting stainless steel plate, and the most important thing is the cutting rate.
② When we cut high-temperature alloy, if the cutting rate is too high or too low, we should avoid the rapid tool damage.
③ The use of carbide tools cutting rate is generally 20 to fifty meters/min; cutting speed should be slowed down, generally take the piece 0.1 to 0.5 mm / r., and rough turning had better take the maximum value, while fine turning to take a small value; back eating tool is unsuitable for small cutting, so rough turning had better take 2 to 4mm, while fine turning to take 0.2-05mm.  high-speed tool steel alloy milling cutter production processing high-temperature alloy common cutting use for vc=5-10m/min,f=0.05-0.12mm/r,ap=1-3mm, carbide face turning tool is vc=20~45m/min,f=0.05-0.1mm/r.ap=1-4mm.
④ Iron-based high-temperature alloy with reasonable heat treatment process can be annealed, and nickel-based high-temperature alloy can be treated by aging.
---EDITOR: Jackie Wang
---POST: Jackie Wang

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