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Preparation method for composite plastic-steel matrix steel-bonded hard alloy

A technology of steel-bonded hard alloy and composite plastic, which is applied in the field of metal matrix composite material preparation, can solve problems such as difficult forming and sintering, and achieve the effects of improved wettability, reduced porosity, and good compatibility

Inactive Publication Date: 2019-03-01
徐州市华博工程塑钢制造厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is aimed at the difficulties in forming and sintering existing steel-bonded hard alloys, which are difficult to quickly and economically prepare parts with small grain size, high content, large size and complex shapes, etc., and provides a method for preparing Preparation method of composite plastic steel-based steel-bonded hard alloy with large size, complex shape, simple production process and low cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing a composite plastic steel-based steel-bonded hard alloy, comprising the steps of:

[0029] Weighing mass fraction is 40% composite cemented carbide powder (vanadium carbide powder: titanium carbide powder: titanium nitride powder: the mixing ratio of vanadium nitride powder is 1.4:1.5:0.7:2.4), 0.10% Ce, 0.2% FeSiMgRe, 0.4% graphite powder, 8% carbonyl iron powder, 6Cr4W3MoVNb plastic steel matrix raw material powder, put the above powder into a ball mill for mixing and crushing, add absolute ethanol as a process control agent, put the wet mixed powder into vacuum drying Dry it in the box, and use it after drying; measure the organic monomer hydroxyethyl acrylate and the solvent xylene to prepare the premix according to the volume ratio of 1:2, add 1.2g / 100ml of dibenzoyl peroxide to the premix and stir Uniformly; add the dry mixed powder into the premix, dropwise add 2% oleic acid and stir evenly to form a slurry; add 0.15% dimethylaniline to the...

Embodiment 2

[0031] A method for preparing a composite plastic steel-based steel-bonded hard alloy, comprising the steps of:

[0032] Weighing mass fraction is 45% composite cemented carbide powder (vanadium carbide powder: titanium carbide powder: titanium nitride powder: the mixing ratio of vanadium nitride powder is 2.3:1.6:1.2:3.0), 0.20%Nb, 0.6% FeSiMgRe, 0.6% graphite powder, 10% carbonyl iron powder, 6W6Mo5Cr4V plastic steel matrix raw material powder, put the above powder into a ball mill for mixing and crushing, add cyclohexane as a process control agent, put the wet mixed powder into vacuum drying Dry it in the box, and use it after drying; measure the organic monomer hydroxyethyl acrylate and the solvent xylene to prepare the premix according to the volume ratio of 1:1, add 1.2g / 100ml of dibenzoyl peroxide to the premix and stir Uniformly; add the dry mixed powder into the premix, dropwise add 2% oleic acid and stir evenly to form a slurry; add 0.15% dimethylaniline to the slurr...

Embodiment 3

[0034] A method for preparing a composite plastic steel-based steel-bonded hard alloy, comprising the steps of:

[0035] The composite cemented carbide powder (vanadium carbide powder: titanium carbide powder: titanium nitride powder: vanadium nitride powder mixing ratio of 3.2: 1.8: 1.7: 4), 0.30% Eu, 1.0% weighing mass fraction is 50% FeSiMgRe, 0.8% graphite powder, 12% carbonyl iron powder, 7Cr7Mo3V2Si plastic steel matrix raw material powder, put the above powder into a ball mill for mixing and crushing, add n-hexane as a process control agent, put the wet mixed powder into a vacuum drying oven Dry it in a dry place, and use it for later use; Measure the organic monomer hydroxyethyl acrylate and the solvent xylene to prepare a premixed solution according to the volume ratio of 2:1, add 1.2g / 100ml of dibenzoyl peroxide to the premixed solution and stir evenly Add the dry mixed powder to the premix, drop 2% oleic acid and stir evenly to form a slurry; add 0.15% dimethylanili...

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Abstract

The invention relates to a preparation method for a composite plastic-steel matrix steel-bonded hard alloy. The preparation method comprises the steps that hard alloy powder and plastic-steel matrix powder are weighed according to proportion; the alloy powder is put into a ball mill for mixing and crushing; absolute alcohol is added as a process control agent; after the ball milling, the wet mixedpowder is put into a vacuum drying box to be dried for use; a premix is prepared by adding an organic monomer and an initiator to the solvent; an additive that increases the fluidity and dispersibility of a slurry is added into the premix; a catalyst and a PH adjuster are added and stirred uniformly to obtain the slurry; the slurry is injected into an injection mold to vacuumize or vibrate the gas; after the slurry is solidified, the obtained blank is put into the vacuum drying box for drying; and the dried blank is integrally degummed and sintered in a vacuum sintering furnace to prepare thesteel-bonded hard alloy. The preparation method has the advantages of simple process, low cost and easy preparation of large-sized and complex-shaped parts on the basis of ensuring the macroscopic performance of the steel-bonded hard alloy.

Description

technical field [0001] The invention relates to the field of metal-based composite material preparation, in particular to a method for preparing composite plastic-based steel-bonded hard alloy. Background technique [0002] The new cemented carbide can replace traditional wear-resistant materials in industries such as automobiles, metallurgy, mining, building materials and molds, greatly improve the service life of parts, save resources, and have good social and economic benefits. In addition, with the large demand of industrial production and the inevitable human waste, the resources of W and Co in my country and even the world are already quite poor, and the price keeps rising. All countries are vigorously carrying out the research and development of substitute materials for W and Co. Therefore, the research and development of composite plastic-based steel-bonded cemented carbide is of great significance both in engineering applications and in technical and economic aspect...

Claims

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Application Information

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IPC IPC(8): B22F3/22B22F3/10C22C1/05C22C29/00C22C30/00C22C1/10
CPCB22F3/22B22F3/1021C22C1/051C22C29/005C22C30/00
Inventor 王建华
Owner 徐州市华博工程塑钢制造厂
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