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Abrasion-resistant erosion-resistant burning-stick preventing coating for aluminum alloy guide rail, and preparation method and application of abrasion-resistant erosion-resistant burning-stick preventing coating

An aluminum alloy, erosion-resistant technology, applied in the field of wear-resistant, erosion-resistant, anti-sticking coatings for aluminum alloy guide rails and its preparation and application, can solve problems such as spraying wear-resistant, corrosion-resistant, and anti-sticking coatings, and achieve high Combined strength, reasonable and scientific ratio, and the effect of reducing the difficulty of maintenance

Active Publication Date: 2019-04-16
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no invention patent for spraying wear-resistant, corrosion-resistant and anti-sticking coatings on the surface of aluminum alloy guide rail materials to solve the above problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Pretreatment and protection: visually inspect the surface to be sprayed on the aluminum alloy guide rail to ensure that there are no obvious defects such as bumps, pits, pores, burrs, etc., use acetone or alcohol to wipe the surface to be sprayed to remove oil stains, and fix it with protective tooling and protective tape And to protect the non-sprayed surface and screw holes of the guide rail from contamination;

[0042] (2) Sandblasting treatment: After the aluminum alloy guide rail is clamped and protected by tooling and protective tape, the mixed brown corundum grit of 40 mesh and 16 mesh with a mass ratio of 1:1 is used for sandblasting. The compressed air used for sandblasting must be dry, Oil-free, air pressure 0.5MPa, spray angle 90°, sand blasting distance 0.10m, sand blasting until the surface of the guide rail reveals a matt fresh metal surface; through sand blasting, the surface of the roughened substrate is purified to ensure the coating and substrate Good...

Embodiment 2

[0047] (1) Pretreatment and protection: visually inspect the surface to be sprayed on the aluminum alloy guide rail to ensure that there are no obvious defects such as bumps, pits, pores, burrs, etc., use acetone or alcohol to wipe the surface to be sprayed to remove oil stains, and fix it with protective tooling and protective tape And to protect the non-sprayed surface and screw holes of the guide rail from contamination;

[0048] (2) Sandblasting treatment: After the aluminum alloy guide rail is clamped and protected by tooling and protective tape, it is sandblasted with 40 mesh and 24 mesh mixed brown corundum grit with a mass ratio of 1:2. The compressed air used for sandblasting must be dry, Oil-free, air pressure 0.8MPa, spray angle 70°, sand blasting distance 0.2m, sand blasting until the surface of the guide rail reveals a matt-colored fresh metal surface; through sand blasting, the surface of the roughened substrate is purified to ensure the coating and substrate Good c...

Embodiment 3

[0053] (1) Pretreatment and protection: visually inspect the surface to be sprayed on the aluminum alloy guide rail to ensure that there are no obvious defects such as bumps, pits, pores, burrs, etc., use acetone or alcohol to wipe the surface to be sprayed to remove oil stains, and fix it with protective tooling and protective tape And to protect the non-sprayed surface and screw holes of the guide rail from contamination;

[0054] (2) Sandblasting treatment: After the aluminum alloy guide rail is clamped and protected by tooling and protective tape, it is sandblasted with 40 mesh and 24 mesh mixed brown corundum grit with a mass ratio of 2:1. The compressed air used for sandblasting must be dry, Oil-free, air pressure 0.55MPa, spray angle 90°, sand blasting distance 0.1m, sand blasting until the surface of the guide rail reveals a matte-colored fresh metal surface; through sand blasting, the surface of the roughened substrate is purified to ensure the coating and substrate Good...

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Abstract

The invention relates to the field of thermal spraying coatings, in particular to an abrasion-resistant erosion-resistant burning-stick preventing coating for an aluminum alloy guide rail, and a preparation method and application of the abrasion-resistant erosion-resistant burning-stick preventing coating. The abrasion-resistant erosion-resistant burning-stick preventing coating for the aluminum alloy guide rail contains a metal ceramic layer, wherein the metal ceramic layer is prepared from the following components in percentage by mass: 10-20% of Co, and 80-90% of tungsten carbide ceramic. Cobalt and tungsten carbide mixed powder is adopted as a raw material to be sprayed onto the surface of an aluminum alloy substrate through a supersonic flame to form the metal ceramic layer, thus theabrasion-resistant erosion-resistant burning-stick preventing coating for the aluminum alloy guide rail is obtained, the coating is uniform and dense, erosion resistance, abrasion resistance and high-temperature high-speed flame flow burning-adhesive resistance of the guide rail can be improved, service performance of the guide rail is further improved, the maintenance and repair operation frequency of the guide rail is decreased, the maintenance and repair operation difficulty of the guide rail is lowered, and the comprehensive combat capability is improved.

Description

Technical field [0001] The invention relates to the field of thermal spray coatings, in particular to a wear-resistant, erosion-resistant and anti-sticking coating for aluminum alloy guide rails, and preparation and application thereof. Background technique [0002] A certain guide rail for aviation is made of aluminum alloy casting and machining. It needs to withstand complex working conditions such as vibration, friction, corrosion, and high temperature flame erosion during service. Under the combined effect of the vibration and friction of the projectile, the atmosphere, especially the marine atmosphere, and the emission of the tail flame erosion, the surface of the guide rail is prone to wear, corrosion, and burning, which leads to the reduction of the strength of the guide rail, the deterioration of the surface quality, and the significant decrease in service life. Under the circumstances, it even affects normal work and reduces combat effectiveness. Therefore, the guide r...

Claims

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Application Information

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IPC IPC(8): C23C4/06C23C4/129C23C4/02C22C29/08
CPCC22C29/08C23C4/02C23C4/06C23C4/129
Inventor 许康威魏大岭武笑宇
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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