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A kind of preparation method of cemented carbide round bar

A cemented carbide and round rod technology, applied in the field of cemented carbide, can solve the problems of low qualification rate and difficult quality assurance of cemented carbide round rods

Inactive Publication Date: 2017-06-20
DONGGUAN UNIV OF TECH
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Problems solved by technology

[0003] For cemented carbide tools, it is generally processed by cemented carbide round rods, and the quality of cemented carbide round rods directly affects the quality of cemented carbide tools; As far as the method is concerned, in the actual production and preparation process, it generally has the defects of low qualified rate of cemented carbide round rods and difficult quality assurance.

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  • A kind of preparation method of cemented carbide round bar
  • A kind of preparation method of cemented carbide round bar
  • A kind of preparation method of cemented carbide round bar

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Embodiment Construction

[0035] The present invention will be described below in conjunction with specific embodiments.

[0036] A method for preparing a cemented carbide round bar, comprising the following process steps, specifically:

[0037] a. Preparation of cemented carbide powder: put WC powder, cobalt powder and chromium carbide powder in a ball mill and mix for 10 hours to obtain cemented carbide powder. There are three types of cemented carbide powder: WC powder, cobalt powder and chromium carbide powder The parts by weight of the material are 89.7%, 10%, 0.3% successively;

[0038] B, preparation molding agent: first dissolve 1.5 kilograms of buna rubber and 0.5 kilogram of paraffin in 30 liters of gasoline and rapeseed oil mixed solution, the volume parts of gasoline and rapeseed oil in the gasoline and rapeseed oil mixed solution are successively 75%, 25%, then the mixed solution of gasoline and rapeseed oil dissolved in Buna rubber and paraffin was placed in a viscous mixer and stirred f...

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Abstract

The invention discloses a preparation method of a hard alloy round bar, which comprises the following process steps: a. preparing a hard alloy powder; b. preparing a forming agent; c. preparing a hard alloy forming material; d. preparing a hard alloy Round bar pressing and forming; e, debinding; f, primary sintering; g, secondary sintering. Through the design of the above-mentioned process steps, the present invention can effectively complete the production and preparation of the cemented carbide round rod, and the prepared cemented carbide round rod has a high qualification rate and stable quality.

Description

technical field [0001] The invention relates to the technical field of hard alloys, in particular to a method for preparing hard alloy round rods. Background technique [0002] Cemented carbide is an alloy material made of hard compounds of refractory metals and bonding metals through powder metallurgy; cemented carbide has high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance, etc. A series of excellent properties, especially its high hardness and wear resistance, remain basically unchanged even at a temperature of 500 ° C, and still have high hardness at 1000 ° C. With the above excellent properties, cemented carbide is widely used in tool materials, such as turning tools, milling cutters, planers, drills, boring tools, etc. [0003] For cemented carbide tools, it is generally processed by cemented carbide round rods, and the quality of cemented carbide round rods directly affects the quality of cemented carbide tools; As far ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/08C22C1/05B22F1/00B22F3/03B22F3/04B22F3/10
CPCC22C1/051C22C29/08B22F3/03B22F3/04B22F3/1017B22F2998/10B22F1/10
Inventor 钟守炎陈勇志叶静何伟锋
Owner DONGGUAN UNIV OF TECH
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