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Non-magnetic hard alloy and preparation method thereof

A cemented carbide and mixture technology, applied in the field of alloy manufacturing, can solve the problems of high pressure resistance and poor corrosion resistance, and achieve the effects of good corrosion resistance, low strategic resource consumption, and improved hardness

Inactive Publication Date: 2016-01-27
匡永刚
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AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problems of the existing WC-Co cemented carbide in the alkaline environment such as high pressure resistance and poor corrosion resistance, so as to provide a kind of high pressure resistance and good corrosion resistance which can be used in the alkaline environment. A kind of cemented carbide with the advantages of corrosion resistance, low production cost and high cost performance and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 16

[0026] Example 16.090.210.210.2193.28

Embodiment 26

[0027] Example 26.10.20.20.293.3

Embodiment 36

[0028] Example 36.110.190.190.1993.32

[0029] According to the material ratio table of Examples 1-3, the components by weight percentage are taken: Ni powder 6.09%~6.11%, Cr3C2 powder 0.19%~0.21%, TaC powder 0.19%~0.21%, Mo powder 0.19%~0.21% %, the balance is WC powder. Add Ni powder, Cr3C2 powder, TaC powder, Mo powder and WC powder into the tilting ball mill. The ball mill speed is 240r / min. The material ratio is 3.5:1, the ball milling time is 42-44 hours, the solvent used for wet milling is absolute ethanol, and the mixed slurry is obtained by wet milling until the powder particle size is 1-2 μm.

[0030] Afterwards, filter and dry the above-mentioned mixed slurry, add SD rubber solution of 0.8-1.0% of the total mass of raw materials, mix evenly, vacuum-dry at 90-110°C for 15-25 minutes, and pass through a 80-mesh sieve to obtain the mixture. The mixture is put into a mold, pressed under a pressure of 25-63T, and then placed in a vacuum of 5-20Pa and kept at a temperat...

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Abstract

The invention relates to the technical field of alloy manufacturing, in particular to hard alloy and a preparation method thereof. The non-magnetic hard alloy and the preparation method thereof aim to solve the technical problem that existing WC-Co hard alloy is poor in high pressure resistance and corrosion resistance in an alkaline environment. The non-magnetic hard alloy includes, by weight, 6.09%-6.11% of Ni powder, 0.19%-0.21% of Cr3C2 powder, 0.19%-0.21% of TaC powder, 0.19%-0.21% of Mo powder and the balance WC powder.

Description

technical field [0001] The invention relates to the technical field of alloy manufacture, in particular to a tungsten carbide-based hard alloy with nickel as a binding phase and a preparation method thereof. Background technique [0002] The hard phase in cemented carbide usually refers to WC, TiC, VC, etc., and the binder phase usually refers to Co, Ni, Fe, etc. Cemented carbide begins with WC-Co cemented carbide, which is an alloy with the simplest composition and the widest range of applications. However, when used in an alkaline environment, the traditional conventional cemented carbide has poor high-pressure resistance and corrosion resistance, and cannot meet the stricter technical index requirements. However, replacing cobalt with nickel as the binder phase can largely solve the problem of WC- Co-based cemented carbide is not resistant to high pressure and corrosion in acid or alkaline environments. Contents of the invention [0003] The present invention aims to ...

Claims

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Application Information

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IPC IPC(8): C22C29/08
Inventor 匡永刚
Owner 匡永刚
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