Method for preparing high-melting-point solid continuous film through electric arc spraying

An arc spraying, continuous film technology, applied in the direction of coating, fusion spraying, metal material coating process, etc., can solve the metal solid state continuous film shrinkage, thermal stress and porosity, large difference in thermal expansion coefficient, high The melting point metal is difficult to melt and other problems, so as to avoid the large difference in thermal expansion coefficient, the surface is dense, and the operation is simple and convenient.

Inactive Publication Date: 2019-04-26
王磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the arc spraying process is used to directly spray the high-melting point metal solid continuous film on the surface of the substrate material, due to the large difference in thermal expansion coefficient between the two, and the high melting point metal is difficult to melt, it is difficult to control the working parameters. The shrinkage rate, thermal stress and porosity of the solid continuous film are relatively large, and the solid continuous film is easily deformed, and defects such as warping, cracking and peeling occur on the surface of the substrate material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Surface treatment of the base material: use stainless steel as the base material, and use corundum with a particle size of 100 μm to carry out sandblasting and polishing on its surface. The sandblasting process is: sandblasting pressure 0.4MPa, sandblasting distance 10mm, Sandblast at an angle of 90°, then place them in an ultrasonic oscillator filled with ether and water for 10 minutes and 5 minutes, respectively, and take them out and dry them for later use;

[0017] (2) Acetylene-oxygen flame spraying intermediate layer: use linear polyethylene plastic with a diameter of 5 mm as the spraying material, and use the acetylene-oxygen spraying process to spray a layer of polyethylene intermediate layer on the stainless steel surface after the above treatment at 150 °C;

[0018] (3) Grinding treatment of the surface of the intermediate layer: After the above-mentioned polyethylene intermediate layer is cured at room temperature for 6-12 hours, the surface is polished wi...

Embodiment 2

[0021] (1) Surface treatment of the base material: take cast iron as the base material, and use corundum with a particle size of 80 μm to carry out sandblasting and polishing on its surface. The sandblasting process is: sandblasting pressure 0.45MPa, sandblasting distance 10mm, Sandblast at an angle of 90°, then place them in an ultrasonic oscillator filled with ether and water for 10 minutes and 5 minutes, respectively, and take them out and dry them for later use;

[0022] (2) Acetylene-oxygen flame spraying intermediate layer: use linear polypropylene plastic with a diameter of 10-15mm as the spraying material, and use the acetylene-oxygen spraying process to spray a layer of polymer on the cast iron surface after the above treatment at 160-180°C. Propylene middle layer;

[0023] (3) Grinding treatment of the surface of the intermediate layer: after the above-mentioned polyethylene intermediate layer is cured at room temperature for 6-12 hours, the surface is polished with ...

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Abstract

The invention discloses a method for preparing a high-melting-point solid continuous film through electric arc spraying. The high-melting-point solid continuous film comprises a substrate layer, a middle layer and a metal layer; the preparing method comprises the following steps of firstly, surface treatment of the substrate material; secondly, middle layer acetylene-oxygen flame spraying; thirdly, middle layer surface grinding treatment; and fourthly, high-melting-point metal solid continuous film electric arc spraying. Through the above manner, the prepared solid continuous film has the thickness of 2 to 5 mm; the method for preparing the high-melting-point solid continuous film through electric arc spraying is reasonable in preparing procedure, easy and convenient to operate and capableof effectively avoiding large differences of heat expansion coefficients between high-melting-point metal and the base material, the prepared high-melting-point metal solid continuous film is compactin surface, combination between the middle layer and the substrate is firm, defects of warping, cracking and the like are overcome, the thickness is large, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of metal solid continuous films, in particular to a method for preparing high melting point solid continuous films by arc spraying. Background technique [0002] The solid continuous film materials used in the high melting point metal solid continuous film are rare metals, which have the advantages of high hardness, good heat resistance, corrosion resistance, etc., and are widely used in industry. The preparation of metal solid continuous film by arc spraying has the advantages of simplicity, convenience and high forming efficiency, and is a widely used preparation method in the technical field of metal solid continuous film preparation. However, when the arc spraying process is used to directly spray the high-melting point metal solid continuous film on the surface of the substrate material, due to the large difference in thermal expansion coefficient between the two, and the high melting point metal is dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/131C23C4/06C23C4/129C23C4/04C23C4/02
CPCC23C4/131C23C4/02C23C4/04C23C4/06C23C4/129
Inventor 王磊
Owner 王磊
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