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Method for mfg. W-Co-Ti hard alloy

A cemented carbide and tungsten-cobalt technology, which is applied in the field of preparation of tungsten-cobalt-titanium cemented carbide, can solve the problems of excessive wear, reduction, and easy burning of alloy blades.

Inactive Publication Date: 2007-06-13
ZHUZHOU HARD ALLOY GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a preparation method of tungsten-cobalt-titanium cemented carbide, improve its hardness without reducing the toughness of cemented carbide, and solve the problems of excessive wear and easy burning of alloy blades during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] The specific implementation method of the preparation method of the tungsten-cobalt-titanium cemented carbide of the present invention includes firstly making the compound carbide, cobalt powder and tungsten carbide powder into a mixture according to certain requirements, unloading after 70-73 hours of wet grinding in a ball mill, and re-precipitating After 24 hours, drying and 100-mesh vibrating sieve, mixing molding agent, pressing, releasing molding agent and sintering at (1470-1480) ° C for 50 minutes.

[0007] Table 1 provides 5 specific examples of the chemical composition of the aforementioned mixture and related batching methods. Table 2 provides the Rockwell hardness and flexural strength values ​​of the tungsten-cobalt-titanium cemented carbide prepared according to the five specific examples in Table 1.

[0008] Table 1

[0009] make up

No

co

(wt%)

Ti

(wt%)

C

(wt%)

W

(wt%)

Duplex...

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PUM

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Abstract

A hard W-Co-Ti alloy is prepared from WC-TiC, WC powder and Co powder through proportioning, ball grinding, drying, adding formagen, die pressing and sintering. Its advantages are high hardness and high toughness.

Description

technical field [0001] The invention relates to a preparation method of tungsten-cobalt-titanium hard alloy. Background technique [0002] At present, in the rough machining of carbon steel or alloy steel, blades made of P30 cemented carbide that belong to the ISO standard are generally used. The preparation method of the widely used one in this type of cemented carbide (such as the YT5 cemented carbide produced by Zhuzhou Cemented Carbide Factory) generally includes mixing WC-TiC composite carbide with WC powder and Co powder through batching, ball milling, Steps such as drying, compounding agent, press molding and sintering, wherein the weight ratio of TiC to WC in the complex carbide is 30:70~40:60, the content of bonding metal Co is controlled at (8.9~9.4)wt%, Ti The content is (4.8-5.3) wt%, and the particle size range of the WC powder is selected to be (6.0-8.0) μm. The tungsten-cobalt-titanium cemented carbide produced in this way has good toughness, and its bending...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/08C22C1/04
Inventor 杨星桃屈广林唐受捷
Owner ZHUZHOU HARD ALLOY GRP CO LTD