Method for preparing cermet material

A cermet, raw material technology, applied in the direction of adhesive types, adhesives, aldehyde/ketone condensation polymer adhesives, etc., can solve the problems of poor hardness and bending strength of cermet materials, and improve the hardness and bending resistance. The effect of strength, good strength and flexural strength

Active Publication Date: 2009-05-06
靖江市华信科技创业园有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of poor hardness and bending strength of the obtained cermet material when preparing the cermet material with complex structure by the method of injection molding in the prior art, and to provide a cermet material that can be obtained Preparation method of cermet material with higher strength and bending strength

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0009] The invention provides a method for preparing a cermet material. The method comprises uniformly mixing a cermet raw material and a binder, then crushing and injection molding to obtain a blank, degreasing the obtained blank, and then degreasing the The final blank is sintered to obtain a cermet material, wherein the binder is composed of paraffin wax, ethylene-vinyl acetate copolymer, high-density polyethylene and organic acid, and the organic acid is oleic acid and / or stearin acid.

[0010] According to the present invention, in the binder, the content of paraffin wax, ethylene-vinyl acetate copolymer, high-density polyethylene and organic acid can be changed in a wide range, preferably, the total weight of the binder As a benchmark, the content of paraffin wax is 40-60% by weight, the content of ethylene-vinyl acetate copolymer is 10-30% by weight, the content of high-density polyethylene is 10-30% by weight, and the content of organic acid is 5-15% by weight %.

[...

Embodiment 1

[0026] This example illustrates the preparation method of the cermet material provided by the present invention.

[0027] (1) Put 100 parts by weight of cermet raw materials containing 35 parts by weight of TiC, 10 parts by weight of TiN, 6.5 parts by weight of WC, 16.5 parts by weight of Mo and 32 parts by weight of Ni with 11 parts by weight of binder Mix in a high-mixer (Zhangjiagang Light Industry Machinery Factory Co., Ltd., SHR-100A), the mixing temperature is 160 ° C, and the mixing time is 1 hour, and then the mixed cermet raw materials and binder The mixture was transferred to a twin-screw extruder (Zhangjiagang Light Industry Machinery Factory Co., Ltd., CET-35) for mixing, the mixing temperature was 160° C., and the mixing time was 1 hour.

[0028] The binder contains 60% by weight of paraffin, 10% by weight of ethylene-vinyl acetate copolymer (Wenzhou Huate Hot Melt Adhesive Co., Ltd., EVA), 20% by weight of high-density polyethylene (Lanzhou Petrochemical Company,...

Embodiment 2

[0035] This example illustrates the preparation method of the cermet material provided by the present invention.

[0036] (1) Put 100 parts by weight of cermet raw materials containing 40 parts by weight of TiC, 11.5 parts by weight of TiN, 7.5 parts by weight of WC, 18.5 parts by weight of Mo and 22.5 parts by weight of Ni with 14 parts by weight of binder Mix in a high-mixer (Zhangjiagang Light Industry Machinery Factory Co., Ltd., SHR-100A), the temperature of the mixing is 145 ° C, and the mixing time is 2 hours, and then the mixed cermet raw materials and binder The mixture was transferred to a twin-screw extruder (Zhangjiagang Light Industry Machinery Factory Co., Ltd., CET-35) for mixing, the mixing temperature was 145° C., and the mixing time was 1 hour.

[0037] The binder contains 55% by weight of paraffin, 15% by weight of ethylene-vinyl acetate copolymer (Wenzhou Huate Hot Melt Adhesive Co., Ltd., EVA), 25% by weight of high-density polyethylene (Lanzhou Petrochemi...

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Abstract

The invention provides a method for preparing cermet materials. The method comprises the following steps of well mixing raw cermet materials with binder, performing crushing and injection molding so as to obtain blanks, degreasing the obtained blanks and sintering the degreased blanks in a vacuum environment, so as to obtain the cermet materials, wherein the binder consists of paraffin, ethylene-vinyl acetate copolymer, high-density polyethylene and organic acid, and the organic acid is oleic acid and/or stearic acid. By using the binder consisting of the paraffin, the ethylene-vinyl acetate copolymer, the high-density polyethylene and the organic acid selected from the oleic acid and/or the stearic acid, the method avoids the blistering, deformation, cracking and other defects of the blanks in a degreasing process, so as to ensure that the obtained cermet materials have better strength and bending-resistant strength.

Description

technical field [0001] The invention relates to a preparation method of a cermet material. Background technique [0002] Titanium carbonitride-based cermet materials have high hardness, wear resistance, red hardness and chemical stability, low friction coefficient against steel, and also have certain toughness and strength, which can be a good substitute for cemented carbide materials Make knives, measuring tools, molds and wear-resistant parts, etc. [0003] Titanium carbonitride-based cermet materials are usually prepared by molding. For example, CN1346816A discloses a composite cermet and a preparation method thereof. The preparation method of the composite cermet includes the following steps: (1) adding elemental elements Ti, C, Ni, Co powder mixed, the composition weight ratio is: 25≤Ti≤28, 6.5≤C≤7, 25≤Ni≤40, 12≤Mo≤20; prepared by mechanical alloying including nano-scale TiCx and NiCo The mixture of solid solution, and then mix it with TiN, WC, Cr 3 C 2 , C powder a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04B22F3/00C09J161/06C09J123/04
Inventor 郭冉向其军郭忠臣
Owner 靖江市华信科技创业园有限公司
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