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Heat-sintered tungsten carbide-other carbide solid solution alloy coating and preparation method thereof

An alloy coating, tungsten carbide technology, applied in the field of surface coating preparation, can solve the problems of low coating bonding strength, coating cracking, substrate deformation, etc., to achieve high hardness, high corrosion resistance, high wear resistance Effect

Active Publication Date: 2018-04-06
四川科力特硬质合金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This coating preparation technology can overcome other technical problems that cannot be solved by preparing coatings on the surface of various curved surface parts, such as substrate deformation, low coating bonding strength, coating cracking, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The formula that this embodiment is used for preparing WC-MC solid solution alloy coating by vacuum thermal fusion is: WC-MC solid solution alloy powder (wherein M is Ti; TiC content is 15%, WC content 85%) 72 parts, particle size is 50 μm; 23 parts of Co-based and Ni-based self-fluxing alloy mixed powder, with a particle size of 70 μm; 4 parts of molding agent: 1.5 parts of polyethylene glycol (PEG), 0.5 parts of methyl cellulose, 1 part of glycerin, and 1 part of paraffin ; 0.5 parts of adhesive: 0.5 parts of acrylate adhesive.

[0032]The above-mentioned Co-based and Ni-based self-fluxing alloy mixed powder contains 0.5% C, 20% Cr, 1% B, 3.5% Si, 10% Co, 42% Ni, and the balance is Fe.

[0033] Put WC-MC solid solution alloy powder and Co-based and Ni-based self-fluxing alloy mixed powder in a stainless steel ball mill tank, add alloy balls three times the total mass of the mixed alloy powder, and carry out mechanical alloying on a counter-roller to obtain uniform mix...

Embodiment 2

[0035] The present embodiment is used for vacuum thermal fusion to prepare the formula of WC-MC solid solution alloy coating: WC-MC solid solution alloy powder (wherein M is Ti and Ta; TiC content is 20%, TaC content is 5%, WC content 75% %) 75 parts, with a particle size of 80 μm; 15 parts of Co-based and Ni-based self-fluxing alloy mixed powder, with a particle size of 70 μm; 9 parts of forming agent: 5 parts of polyethylene glycol (PEG), 1 part of methyl cellulose , 1 part of glycerin, 2 parts of paraffin; 1 part of adhesive: 1 part of acrylate adhesive.

[0036] The content of the above-mentioned Co-based and Ni-based self-fluxing alloy mixed powder is: 0.3% C, 10% Cr, 3% B, 5% Si, 10% Co, 45% Ni, and the balance is Fe.

[0037] Put WC-MC solid solution alloy powder and Co-based and Ni-based self-fluxing alloy mixed powder in a stainless steel ball mill tank, add alloy balls 4 times the total mass of the mixed alloy powder, and perform mechanical alloying on a counter-roll...

Embodiment 3

[0039] This embodiment is used for shielding gas H 2 The formula for preparing WC-MC solid solution alloy coating by sintering under atmosphere is: WC-MC solid solution alloy powder (wherein M is V, Ta and Cr; TaC content is 2%, Cr 3 C 2 content of 1.0%, VC content of 0.5%, WC content of 96.5%) 80 parts, particle size 40μm; Co-based, Ni-based self-fluxing alloy mixed powder 13 parts, particle size 30μm; molding agent 6 parts: polyethylene 3 parts of glycol (PEG), 0.5 part of methyl cellulose, 0.5 part of glycerin, 2 parts of paraffin; 1 part of adhesive: 1 part of acrylate adhesive.

[0040] The content of the above-mentioned Co-based and Ni-based self-fluxing alloy mixed powder is: 1.5% C, 5% Cr, 3% B, 5% Si, 25% Co, 30% Ni, and the balance is Fe.

[0041] Put WC-MC solid solution alloy powder and Co-based and Ni-based self-fluxing alloy mixed powder in a stainless steel ball mill tank, add alloy balls 4 times the total mass of the mixed alloy powder, and perform mechanical...

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PUM

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Abstract

The invention discloses a hot-fritting tungsten carbide-other carbide solid solution alloy coating. The coating is prepared from, by weight, 71-89 parts of WC-MC solid solutions, 7-25 parts of Co-based and Ni-based self-fluxing alloy mixed powder, and 4-10 parts of forming agents and binders. A specific preparation method includes the steps that the first two kinds of alloy powder are mixed and finely ground on an opposite-rolling machine, added with the forming agents, stirred evenly through an electromagnetic stirring machine then rolled and formed, and a flexible powder plastic blank is obtained; and the flexible powder plastic blank is pasted to the surface of a part through the binders after being cut, and then is heated to 950-1180 DEG C under a vacuum or protection gas atmosphere and kept for 5-30 min, the coating is obtained on the surface of the part after cooling. The hot-fritting tungsten carbide-other carbide solid solution alloy coating has no crack, no air hole and no impurity on the surface, and is high in hardness, high in bonding strength with the part and adjustable in thickness. A device for preparing the coating is simple, operation is flexible, and the part can not be damaged.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of preparation of surface coatings, more specifically, embodiments of the present invention relate to a thermally sintered tungsten carbide-other carbide solid solution alloy coating and vacuum, or H 2 , N 2 A method for preparing the heat-sintered tungsten carbide-other carbide solid solution alloy coating by heat-sintering under protective atmospheres such as Ar and Ar. Background technique [0002] The rapid development of modern industry has higher and higher performance requirements for equipment and parts, especially in the fields of petroleum, mining, metallurgy, coal-fired power generation, garbage disposal and other fields. The environment is characterized by high speed and high load, particle wear, high temperature and corrosion , the failure of the component occurs concentratedly on the surface of the component. The failure of parts is an important reason for the reduction ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C29/08
Inventor 苏华万小虎李文鹏
Owner 四川科力特硬质合金股份有限公司