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A kind of preparation method of nickel alloy 200um coating

A nickel alloy and alloy layer technology, which is applied in the field of nickel alloy 200um coating preparation, can solve problems such as cracking, and achieve the effects of low melting point, excellent spray weldability and high hardness

Active Publication Date: 2018-11-02
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Insufficient plasma spraying is that when the sprayed layer is thick, cracking can occur

Method used

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  • A kind of preparation method of nickel alloy 200um coating
  • A kind of preparation method of nickel alloy 200um coating
  • A kind of preparation method of nickel alloy 200um coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of preparation method of nickel alloy 200um coating, concrete steps are as follows:

[0034] 1. Use 200 on the surface of the automobile gear shaft (alloy steel 20CrMnTi) ## Sandpaper grinding, and then sandblasting;

[0035] 2. Take metal nickel powder, metal cobalt powder, metal molybdenum powder and metal chromium powder and mix uniformly in proportion to configure alloy powder, wherein each component is calculated by mass percentage: metal chromium powder 6%, metal cobalt powder 15%, metal molybdenum powder 12% and metal nickel powder 67%; metal nickel powder 150-320 mesh, metal cobalt powder 150-320 mesh, metal molybdenum powder 150-320 mesh and metal chromium powder 150-320 mesh;

[0036] 3. The prepared alloy powder is sprayed with a layer of alloy layer on the surface of the treated workpiece by plasma spraying method. The process parameters of plasma spraying are: working voltage 50V, working current 550A, main gas (Ar) 48 / L min -1 , secondary gas (H ...

Embodiment 2

[0038] A kind of preparation method of nickel alloy 200um coating, concrete steps are as follows:

[0039] 1. Use 200 on the surface of the automobile gear shaft (carburized steel 20CrMnTi) # Sanding and then sandblasting;

[0040]2. Take metallic nickel powder, metallic cobalt powder, and metallic molybdenum powder and mix uniformly in proportion to configure alloy powder, wherein each component is calculated by mass percentage: metallic cobalt powder 9%, metallic molybdenum powder 3%, and the rest is metallic nickel powder; alloy The powder size is: metal nickel powder 150-320 mesh, metal cobalt powder 150-320 mesh, metal molybdenum powder 150-320 mesh;

[0041] 3. Spray a layer of alloy layer on the surface of the treated workpiece with the prepared alloy powder by plasma spraying. The process parameters of plasma spraying are: working voltage 50V, working current 550A, main gas (Ar) 48 / L min -1 , secondary gas (H 2 )4.5 / L·min -1 , powder feeding rate 25 / g·min -1 , sp...

Embodiment 3

[0043] A kind of preparation method of nickel alloy 200um coating, concrete steps are as follows:

[0044] 1. Use 200 on the surface of the automobile gear shaft (alloy steel 20CrMnTi) # sanding, followed by sandblasting;

[0045] 2. Take metal nickel powder, metal cobalt powder, metal molybdenum powder and metal chromium powder and mix uniformly in proportion to configure alloy powder, wherein each component is calculated by mass percentage: metal chromium powder 6%, metal cobalt powder 15%, metal molybdenum powder 12%, the rest is metal nickel powder; the particle size of alloy powder is: metal nickel powder 150-320 mesh, metal cobalt powder 150-320 mesh, metal molybdenum powder 150-320 mesh and metal chromium powder 150-320 mesh;

[0046] 3. Spray a layer of alloy layer on the surface of the treated workpiece with the prepared alloy powder by plasma spraying. The process parameters of plasma spraying are: working voltage 50V, working current 550A, main gas (Ar) 48 / L min -...

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Abstract

The invention discloses a preparation method of a nickel alloy 200-micrometer coating. The method comprises the steps that firstly, heat treatment is carried out on the surface of a workpiece; then, various kinds of metal powder are taken out, are used for preparing alloy powder according to the proportion and are evenly stirred; and finally, a plasma spraying method is adopted to spray an alloy layer on the surface of the workpiece. The method has the advantages that the method is simple, raw materials are easy to obtain, the comprehensive performance is good, and the application is wide.

Description

technical field [0001] The invention relates to the technical field of protection, in particular to a method for preparing a nickel alloy 200um coating. Background technique [0002] Plasma spraying occupies the most important position in thermal spraying technology. The coating is flat and smooth, and the thickness can be precisely controlled. Plasma coating has low porosity, high bonding degree and high bonding strength. The coating is thicker, harder and more corrosion-resistant. Since the thermal influence of the spraying process on the substrate is small, the substrate structure will not change. Plasma spraying is an extremely important technology in the field of thermal spraying technology. Most of the contemporary thermal spraying materials can be prepared into good performance coatings by plasma spraying technology. Plasma spraying is carried out by using plasma arc, which is a compression arc. Compared with free arc, its arc column is thinner, its current densit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/134C23C4/08
Inventor 陈卓君司行朱巍巍黄志伟
Owner SHENYANG LIGONG UNIV
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