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A kind of high-strength and high-hardness surface protection spray powder and its application method

A technology of spraying powder and application method, applied in the direction of coating, melting spraying, metal material coating process, etc., can solve the problems of pollution of the environment by the discharge of electroplating chrome waste liquid, great harm to human body, poor high temperature performance, etc. performance, reducing contamination issues, enhancing bond strength

Active Publication Date: 2022-06-28
ANHUI UNIVERSITY OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of the existing electrochrome plating technology that the obtained coating is hard and brittle, easy to crack, poor in high temperature performance, and the discharge of electrochrome waste liquid pollutes the environment and is extremely harmful to the human body, and provides a high-strength and high-hardness Spray powder and method of application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A high-strength and high-hardness surface protection spray powder of this embodiment includes the following components by weight: 60% of chromium, 30% of nickel, 10% of tungsten, and the sum of the weight percentages of each component is 100%, and also contains Cobalt tungsten carbide powder, the addition amount of cobalt tungsten carbide powder is 1% of the total weight of chromium, nickel and tungsten. Among them, the particle size of chromium powder, nickel powder and tungsten powder is 135-150 μm, the particle size of cobalt tungsten carbide powder is 30-45 μm, and the composition of cobalt tungsten carbide is 88WC-12Co.

[0031] The spraying powder of this embodiment is sprayed on the surface of the base material for surface protection of the metal base material, which specifically includes the following steps:

[0032] Step 1: Preparation of sprayed powder: firstly, the sprayed powder is dried at 100° C. with each raw material, and the drying time is 24 hours, and...

Embodiment 2

[0037] A high-strength and high-hardness surface protection spray powder of this embodiment includes the following components by weight: 65% chromium, 20% nickel, 15% tungsten, the sum of the weight percentages of each component is 100%, and also contains Cobalt tungsten carbide powder, the addition amount of cobalt tungsten carbide powder is 2% of the total weight of chromium, nickel and tungsten. Among them, the particle size of the chromium powder, nickel powder, and tungsten powder is 100-115 μm, the particle size of the cobalt tungsten carbide powder is 15-25 μm, and the composition of the cobalt tungsten carbide is 88WC-12Co.

[0038] The spraying powder of this embodiment is sprayed on the surface of the base material for surface protection of the metal base material, which specifically includes the following steps:

[0039]Step 1: Preparation of sprayed powder: firstly, the sprayed powder is dried at 150° C. with each raw material, and the drying time is 24 hours, and ...

Embodiment 3

[0044] A high-strength and high-hardness surface protection spray powder of this embodiment includes the following components by weight: 63% chromium, 29% nickel, 8% tungsten, the sum of the weight percentages of each component is 100%, and also contains Cobalt tungsten carbide powder, the addition amount of cobalt tungsten carbide powder is 5% of the total weight of chromium, nickel and tungsten. The particle size of the chromium powder, nickel powder, and tungsten powder is 110-125 μm, the particle size of the cobalt tungsten carbide powder is 20-35 μm, and the composition of the cobalt tungsten carbide is 88WC-12Co.

[0045] The spraying powder of this embodiment is sprayed on the surface of the base material for surface protection of the metal base material, which specifically includes the following steps:

[0046] Step 1: Preparation of spraying powder: first, drying the spraying powder with each raw material at 120° C. for 24 hours, and then performing mixing ball millin...

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Abstract

The invention discloses a high-strength and high-hardness surface protection spray powder and an application method thereof, belonging to the field of metal materials and powder metallurgy. The high-strength and high-hardness surface protection spray powder of the present invention comprises the following components by weight percentage: chromium 60-65%, nickel 20-30%, tungsten 8-15%, and the weight percentage sum of each composition is 100%, At the same time, it also contains cobalt tungsten carbide powder, and the addition amount of cobalt tungsten carbide powder is 0-5% of the total weight of chromium, nickel and tungsten. Using the spraying powder of the present invention to protect the material surface can avoid the harm caused by hard, brittle and easy cracking of the coating without reducing the protection performance, and at the same time greatly reduce the pollution caused by electroplating, and its application process is simple. Low cost and easy to promote.

Description

technical field [0001] The invention belongs to the technical field of metal materials and powder metallurgy, and more particularly relates to a high-strength and high-hardness surface protection spray powder and an application method thereof. Background technique [0002] As an important traditional process for material surface protection, chrome plating is widely used in aerospace, iron and steel industry, packaging and printing, and papermaking. An important technique for failure, and is often used to repair broken parts. [0003] However, the hardness of the chrome plating layer will decrease when the temperature increases, so its working temperature is low, and it is difficult to adapt to some parts that work at higher temperatures; and when a relatively thick plating layer is required, the deposition rate of chrome plating is slow, and the process cycle At the same time, the micro-cracks in the chrome plating layer will cause it to crack and fall off, and then corrode...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/06C23C4/08C23C4/129C22C27/06C22C32/00B22F9/04
CPCC23C4/06C23C4/08C23C4/129C22C27/06C22C32/0052B22F9/04B22F2009/043
Inventor 吴朝阳赵乾方钊方长春黄华钦孔辉刘昊
Owner ANHUI UNIVERSITY OF TECHNOLOGY