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Hard alloy with good machinability at high temperature

A technology of cemented carbide and cutting performance, applied in the field of cemented carbide, can solve the problems of difficult to form integral cutting tools, high brittleness of cemented carbide, inability to perform cutting, etc., to achieve the effect of improving bending strength and impact toughness

Inactive Publication Date: 2020-04-17
江苏聚鑫电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that cemented carbide is brittle and cannot be cut, and it is difficult to make a complex-shaped integral tool; provide a cemented carbide that still has good cutting performance and mechanical properties at high temperatures

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A cemented carbide with good cutting performance at high temperatures, comprising a cemented carbide matrix composed of metal carbide powder and metal binder, the metal carbide powder is composed of tungsten carbide, chromium carbide, titanium carbide and Composition of tantalum carbide; calculated in parts by weight: 45 parts of tungsten carbide, 40 parts of chromium carbide, 15 parts of titanium carbide and 10 parts of tantalum carbide; The number of servings is 6.

[0012] Preferably, the hard alloy material is characterized in that: the grain size of the metal carbide powder is 0.3-0.6 μm.

[0013] Preferably, the hard alloy is characterized in that the holding time after reaching the sintering temperature is 70 minutes.

Embodiment 2

[0015] A cemented carbide with good cutting performance at high temperatures, comprising a cemented carbide matrix composed of metal carbide powder and metal binder, the metal carbide powder is composed of tungsten carbide, chromium carbide, titanium carbide and Composition of tantalum carbide; calculated in parts by weight: 55 parts of tungsten carbide, 35 parts of chromium carbide, 16 parts of titanium carbide and 9 parts of tantalum carbide; the metal binder is an alloy of cobalt, molybdenum or a combination of nickel and molybdenum. The number of servings is 6.

[0016] Preferably, the hard alloy material is characterized in that: the grain size of the metal carbide powder is 0.3-0.6 μm.

[0017] The hard alloy is characterized in that: the holding time after reaching the sintering temperature is 80 minutes.

Embodiment 3

[0019] A cemented carbide with good cutting performance at high temperatures, comprising a cemented carbide matrix composed of metal carbide powder and metal binder, the metal carbide powder is composed of tungsten carbide, chromium carbide, titanium carbide and Composition of tantalum carbide; calculated in parts by weight: 48 parts of tungsten carbide, 50 parts of chromium carbide, 10 parts of titanium carbide and 11 parts of tantalum carbide; the metal binder is an alloy of cobalt, molybdenum or a combination of nickel and molybdenum. The number of servings is 7.

[0020] Preferably, the hard alloy material is characterized in that: the grain size of the metal carbide powder is 0.3-0.6 μm.

[0021] The hard alloy is characterized in that: the holding time after reaching the sintering temperature is 65 minutes.

[0022] This kind of cemented carbide that still has good cutting performance at high temperature effectively improves the hardness of cemented carbide, and can red...

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PUM

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Abstract

The invention provides a hard alloy with good machinability at high temperature. According to the technical scheme, the hard alloy with the good machinability at the high temperature comprises a cemented carbide matrix composed of metal carbide powder and a metal binder, wherein the metal carbide powder comprises the following materials in parts by weight: 40-55 parts of tungsten carbide, 35-55 parts of chromium carbide, 10-20 parts of titanium carbide and 5-15 parts of tantalum carbide; and the metal binder is 4-8 parts of alloy of combination of cobalt and molybdenum or combination of nickeland molybdenum in parts by weight. Compared with the prior art, the hard alloy with the good machinability at the high temperature effectively improves the hardness of the hard alloy; and the metal binder is the alloy of the combination of the cobalt and the molybdenum or the combination of the nickel and the molybdenum, so that the bending strength and impact toughness of a material can be remarkably improved.

Description

technical field [0001] The invention relates to a cemented carbide which still has good cutting performance at high temperature. Background technique [0002] Cemented carbide has high hardness, strength, wear resistance and corrosion resistance, and is known as "industrial teeth". The market demand for cemented carbide continues to increase. Alloy products have also raised the urgent demand of China. Contents of the invention [0003] The technical problem to be solved by the present invention is that cemented carbide is brittle and cannot be cut, and it is difficult to make an integral tool with complex shape; a cemented carbide that still has good cutting performance and mechanical properties at high temperature is provided. [0004] In order to solve the problems of the technologies described above, the technical solution proposed by the present invention is: [0005] A cemented carbide with good cutting performance at high temperatures, comprising a cemented carbide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/06
CPCC22C29/067
Inventor 陈思思刘亚萍
Owner 江苏聚鑫电气有限公司