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A kind of preparation method of wear-resistant and corrosion-resistant nickel-based alloy coating

A nickel-based alloy, corrosion-resistant technology, applied in metal material coating process, coating, melt spraying and other directions, can solve the problems of low efficiency, high cost, unfavorable mass production, etc., to achieve cost reduction, good bonding strength, Beneficial for mass production

Active Publication Date: 2017-03-29
XIAN SUPERCRYSYAL SCI TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the coating obtained by flame spraying, arc spraying and other methods can only meet the general wear resistance or corrosion resistance, while the cost of laser spraying is high and the efficiency is low, which is not conducive to mass production
For the product requirements of aviation, aerospace, precision machining and other industries, these methods can no longer meet their needs

Method used

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  • A kind of preparation method of wear-resistant and corrosion-resistant nickel-based alloy coating
  • A kind of preparation method of wear-resistant and corrosion-resistant nickel-based alloy coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Surface cleaning of the workpiece: use sandpaper to polish the surface of the workpiece to be sprayed, so that the surface reveals a metallic luster;

[0026] 2) Sandblasting roughening: use white corundum as the spraying material, and perform sandblasting roughening on the surface of the workpiece cleaned in step 1), wherein the white corundum sand particle size is 60-100 mesh, and the sandblasting distance is 100-150mm;

[0027] 3) Surface cleaning of the workpiece: use acetone to clean the surface of the workpiece after sandblasting and roughening;

[0028] 4) Clamping: place the workpiece on the rotating fixture;

[0029] 5) Thermal spraying: HEP-Jet supersonic plasma spraying system and SG-100 plasma spray gun are used to spray a layer of nickel alloy coating with a thickness of 50 μm on the cleaned surface of the workpiece. The spraying process parameters are: power 40KW, The powder feeding rate is 30g·min -1 , the main steam flow rate is 90L·min -1 , The sp...

Embodiment 2

[0032] 1) Surface cleaning of the workpiece: use sandpaper to polish the surface of the workpiece to be sprayed, so that the surface reveals a metallic luster;

[0033] 2) Sandblasting coarsening: using white corundum as the spraying material, carry out sandblasting roughening on the surface of the workpiece to be sprayed after cleaning in step 1), wherein the white corundum sand particle size is 60-100 mesh, and the sandblasting distance is 100-150mm;

[0034] 3) Surface cleaning of the workpiece: use acetone to clean the surface of the workpiece to be sprayed after sandblasting and roughening;

[0035] 4) Clamping: place the workpiece on the rotating fixture;

[0036] 5) Thermal spraying: HEP-Jet supersonic plasma spraying system and SG-100 plasma spray gun are used to spray a layer of nickel alloy coating with a thickness of 50 μm on the surface of the workpiece after cleaning. The spraying process parameters are: power 35KW, The powder feeding rate is 25g·min -1 , the ma...

Embodiment 3

[0039] 1) Surface cleaning of the workpiece: use mechanical processing to clean the surface of the workpiece to be sprayed, so that the surface reveals a metallic luster;

[0040] 2) Sand blasting coarsening: use white corundum as the spraying material, and perform sand blasting roughening on the surface of the workpiece to be sprayed after cleaning in step 1), wherein the white corundum sand particle size is 60-100 mesh, and the sand blasting distance is 100-150mm;

[0041] 3) Surface cleaning of the workpiece: use acetone to clean the surface of the workpiece to be sprayed after sandblasting and roughening;

[0042] 4) Clamping: place the workpiece on the rotating fixture;

[0043] 5) Thermal spraying: HEP-Jet type supersonic plasma spraying system and SG-100 type plasma spray gun are used to spray a layer of nickel alloy coating with a thickness of 50 μm on the surface of the workpiece after cleaning. The spraying process parameters are as follows: power 30KW, The powder f...

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Abstract

The invention discloses a method for preparing a wear-resisting corrosion-resisting nickel-based alloy coating. The method comprises the following steps: cleaning the surface of a workpiece to be sprayed, subsequently performing abrasive blasting to coarsen, further washing, spraying a nickel alloy coating of which the thickness is 40-60mu m onto the washed surface by using a supersonic speed plasma spraying system and a plasma spray gun, after the spraying, naturally cooling in air so as to obtain the nickel-based alloy coating, wherein the spraying process parameters are as follows: the power is 30-40KW, the powder supply velocity is 20-30g.min<-1>, the main gas flow is 90-110L.min<-1>, and the spraying distance is 90-110mm. Due to adoption of the method that the wear-resisting corrosion-resisting nickel-based alloy coating is prepared by using a supersonic speed plasma spraying technique, the obtained nickel-based alloy coating is compact, the surface of the coating is uniform, the coating is good in adhesion strength with the workpiece, the hardness of the coating can meet the requirement, and the technique requirements of wear-resistance and corrosion-resistance at high temperature (300 DEG C) can be well met.

Description

technical field [0001] The invention relates to a nickel-based alloy coating, in particular to a preparation method for a wear-resistant and corrosion-resistant nickel-based alloy coating. Background technique [0002] In the scope of today's technology, except for a few precious metals, metal materials will undergo chemical or electrochemical reactions with the surrounding medium and suffer from corrosion. In addition, the wear of metal surfaces caused by various mechanical actions is extremely serious, and a large number of metal components fail due to corrosion and wear. According to statistics, the annual loss of steel due to corrosion and wear accounts for about 10% of the output of steel. Therefore, the development of metal surface protection and strengthening technology is a common concern of all countries. With the development of cutting-edge science and modern industry, more and more industrial sectors require that mechanical equipment can operate under high param...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/134C23C4/08C23C4/06
Inventor 朱鹏超张利军薛祥义李金山
Owner XIAN SUPERCRYSYAL SCI TECH DEV CO LTD
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