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High-strength and high-hardness spraying powder for surface protection and application method thereof

A technology of spraying powder and application method, which is applied in the direction of coating, fusion spraying, metal material coating process, etc., can solve the problems of electrochrome plating waste liquid discharge polluting the environment, poor high-temperature performance, and great harm to human body, etc., and achieve the improvement of mechanical properties performance, enhanced bond strength, and reduced contamination problems

Active Publication Date: 2021-11-23
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 comprises the following components by weight percentage: chromium 60%, nickel 30%, tungsten 10%, and the weight percentage sum of each composition 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 substrate for the surface protection of the metal substrate, which specifically includes the following steps:

[0032] Step 1. Preparation of spraying powder: Firstly, the spraying powder is dried with various raw materials at 100° C. for 24 hours, and then mixed and ball ...

Embodiment 2

[0037] A high-strength and high-hardness surface protection spray powder of this embodiment comprises the following components by weight percentage: chromium 65%, nickel 20%, tungsten 15%, the weight percentage sum of each composition 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 chromium powder, nickel powder and tungsten powder is 100-115 μm, the particle size of cobalt tungsten carbide powder is 15-25 μm, and the composition of cobalt tungsten carbide is 88WC-12Co.

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

[0039]Step 1. Preparation of spraying powder: first place the raw materials for the spraying powder at 150° C. for drying for 24 hours, and then carry out mixing and...

Embodiment 3

[0044] A high-strength and high-hardness surface protection spray powder of this embodiment comprises the following components by weight percentage: chromium 63%, nickel 29%, tungsten 8%, the sum of the weight percentages of each composition 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. Among them, the particle size of chromium powder, nickel powder and tungsten powder is 110-125 μm, the particle size of cobalt tungsten carbide powder is 20-35 μm, and the composition of cobalt tungsten carbide is 88WC-12Co.

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

[0046] Step 1. Preparation of the spray powder: firstly put the raw materials for the spray powder at 120° C. for drying for 24 hours, and then carry out mixi...

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Abstract

The invention discloses high-strength and high-hardness spraying powder for surface protection and an application method thereof, and belongs to the field of metal materials and powder metallurgy. The high-strength and high-hardness spraying powder for surface protection comprises, by weight, 60%-65% of chromium, 20%-30% of nickel and 8%-15% of tungsten, the sum of the weight percentages of all the components is 100%. Moreover, the spraying powder further comprises cobalt tungsten carbide powder, and the adding amount of the cobalt tungsten carbide powder is 0-5% of the total weight of the chromium, the nickel and the tungsten. The spraying powder is adopted for material surface protection, under the condition that the protection performance is not reduced, harm caused by hard, brittle and easy cracking of a plating layer is avoided, meanwhile, the pollution problem caused by electroplating is greatly reduced, and the spraying powder is simple in application process, low in cost and easy to popularize.

Description

technical field [0001] The invention belongs to the technical field of metal materials and powder metallurgy, and more specifically relates to a spraying powder for high-strength and high-hardness surface protection and an application method thereof. Background technique [0002] As an important traditional process for material surface protection, chrome plating is widely used in aerospace, steel industry, packaging and printing, and papermaking. The chrome plating layer has high hardness, wear resistance, corrosion resistance and can maintain a bright surface for a long time. Important technologies that have failed are also often used to repair broken parts. [0003] However, the hardness of the chromium plating layer will decrease when the temperature rises, 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 coating is required, the chromium plating deposition speed is slow and the pro...

Claims

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Application Information

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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
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