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Method for preparing tungsten carbide wear-resistant coating needed for swing head of swing forging machine through induction heating

A technology of induction heating and wear-resistant coating, which is applied in the field of wear-resistant coating preparation in material processing engineering, can solve the problems such as the decrease of the hardness of the brazing substrate, and achieve a large coating thickness, easy realization, and improved wear resistance. Effect

Active Publication Date: 2016-12-07
NANCHANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Due to the use of induction local heating, this technology brazes to prepare 0.5-3.0mm thick tungsten carbide composite coating, which solves the shortcoming of the overall heating and brazing matrix hardness in the furnace, and can obtain a good metallurgical bonding interface, and the coating and the matrix are combined. Good, can meet the use requirements of the hemisphere, the key component of the swing rolling machine

Method used

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  • Method for preparing tungsten carbide wear-resistant coating needed for swing head of swing forging machine through induction heating
  • Method for preparing tungsten carbide wear-resistant coating needed for swing head of swing forging machine through induction heating

Examples

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Comparison scheme
Effect test

Embodiment 1

[0047] The method for preparing the tungsten carbide wear-resistant coating required for the swing head of the pendulum mill according to the argon protection induction heating described in this embodiment includes the following steps:

[0048] (1) Stick the paste prefabricated layer containing tungsten carbide WC or tungsten carbide-cobalt WC-Co, self-fluxing alloy powder on the metal substrate with epoxy resin adhesive; the paste prefabricated layer can be two layers Above, the content of tungsten carbide WC or tungsten carbide-cobalt WC-Co in different layers is different, from the surface layer to the paste precoat close to the steel substrate, the content of tungsten carbide WC or tungsten carbide-cobalt WC-Co gradually Reduced to form a tungsten carbide-cobalt content gradient to reduce welding stress;

[0049] The formula of described pasty prefabricated layer is:

[0050] (A) Tungsten carbide WC or tungsten carbide-cobalt WC-Co, and mechanically alloyed self-fluxing a...

Embodiment 2

[0062] The method for preparing the tungsten carbide wear-resistant coating required for the swing head of the pendulum mill according to the argon protection induction heating described in this embodiment includes the following steps:

[0063] (1) Stick the paste prefabricated layer containing tungsten carbide WC or tungsten carbide-cobalt WC-Co, self-fluxing alloy powder on the metal substrate with epoxy resin adhesive; the paste prefabricated layer can be two layers Above, the content of tungsten carbide WC or tungsten carbide-cobalt WC-Co in different layers is different, from the surface layer to the paste precoat close to the steel substrate, the content of tungsten carbide WC or tungsten carbide-cobalt WC-Co gradually Reduced to form a tungsten carbide-cobalt content gradient to reduce welding stress;

[0064] The formula of described pasty prefabricated layer is:

[0065] (A) Tungsten carbide WC or tungsten carbide-cobalt WC-Co, and mechanically alloyed self-fluxing a...

Embodiment 3

[0077] The method for preparing the tungsten carbide wear-resistant coating required for the swing head of the pendulum mill according to the argon protection induction heating described in this embodiment includes the following steps:

[0078] (1) Stick the paste prefabricated layer containing tungsten carbide WC or tungsten carbide-cobalt WC-Co, self-fluxing alloy powder on the metal substrate with epoxy resin adhesive; the paste prefabricated layer can be two layers Above, the content of tungsten carbide WC or tungsten carbide-cobalt WC-Co in different layers is different, from the surface layer to the paste precoat close to the steel substrate, the content of tungsten carbide WC or tungsten carbide-cobalt WC-Co gradually Reduced to form a tungsten carbide-cobalt content gradient to reduce welding stress;

[0079] The formula of described pasty prefabricated layer is:

[0080] (A) Tungsten carbide WC or tungsten carbide-cobalt WC-Co, and mechanically alloyed self-fluxing all...

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Abstract

A method for preparing a tungsten carbide wear-resistant coating needed for a swing head of a swing forging machine through induction heating includes the steps that a composite powder pasty prefabricated layer which is blended with epoxy resin and contains tungsten carbide powder and self-fluxing alloy powder is pasted on a metal matrix; then BNi2 solder is pasted on the upper surface of the tungsten carbide composite powder pasty prefabricated layer in the same way; and the metal fabricated part is placed in an argon gas protection induction device to be subjected to induction heating. According to the method, the adopted experiment measures are simple and feasible, the prepared tungsten carbide wear-resistant coating is low in cost, simple and feasible, the strength of the matrix is high, and because holes are formed for storing oil, the wear resistance of the coating is remarkably improved.

Description

technical field [0001] The invention relates to a method for preparing a tungsten carbide wear-resistant coating required for the swing head of a swing mill by an argon-protected induction heating infiltration brazing method, which belongs to the field of wear-resistant coating preparation in material processing engineering. Background technique [0002] Oscillating rolling is a forging technology, which is a rotary forming process that realizes integral forming of the workpiece through successive and continuous partial forming. Oscillating rolling can realize net-shape or near-net-shape processing, which has the advantages of labor saving, small impact, small vibration, low noise, easy filling of metal cavity, low investment, long mold life, high product precision, etc., and saves energy, materials, and Investment has expanded the scope of plastic processing and has been widely used in many industrial sectors such as machinery, automobiles, electrical appliances, instrument...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/002B23K1/20B23K3/04B23K3/08
CPCB23K1/002B23K1/20B23K3/04B23K3/08
Inventor 晏建武祝志芳
Owner NANCHANG INST OF TECH
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