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Surface chiseling protective coating for hypersonic rocket sled slide rail and preparation method thereof

A hypersonic, protective coating technology, applied in the device, coating, surface pretreatment, etc. for applying liquid to the surface, can solve the problems of shoe rail chiseling, rocket ski slide rail failure, and damage to the rail structure, etc. To achieve the effect of improving the bonding strength

Inactive Publication Date: 2021-04-13
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the rocket sled runs at hypersonic speed, severe friction and wear occurs between the sliding shoe and the slide rail. At the same time, accompanied by high-frequency impact, the phenomenon of chiseling between the shoe and rail is easy to occur, which damages the structure of the slide rail and leads to premature failure of the slide rail of the rocket sled. fail

Method used

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  • Surface chiseling protective coating for hypersonic rocket sled slide rail and preparation method thereof
  • Surface chiseling protective coating for hypersonic rocket sled slide rail and preparation method thereof
  • Surface chiseling protective coating for hypersonic rocket sled slide rail and preparation method thereof

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preparation example Construction

[0035] A method for preparing a gouging protective coating on the surface of a hypersonic rocket sled slide rail, comprising the following steps:

[0036] 1. Metal substrate surface pretreatment

[0037] First, the surface of the U71 Mn steel substrate is polished step by step with 240#, 600#, and 1200# sandpaper to remove impurities and oxide films on the surface, and then cleaned with acetone to remove oil and clean the surface, and then KH550 silane coupling agent, deionized Mix water and ethanol evenly at a volume ratio of 1:1:4, hydrolyze the mixed solution at room temperature for 20 minutes, soak the surface of the substrate in the hydrolysis solution, take out the sample after 15 minutes and put it in a drying oven at 100°C for 1 hour. At this time, a uniform and dense silane film is attached to the surface of the metal substrate.

[0038] 2. Preparation of gouging protective coating on the surface of hypersonic rocket skid slide rail

[0039] To prepare epoxy resin c...

Embodiment 1

[0042] A method for preparing a gouging protective coating on the surface of a hypersonic rocket sled slide rail, comprising the following steps:

[0043] 1) Substrate surface pretreatment

[0044] First, the surface of the U71 Mn steel substrate is polished step by step with 240#, 600#, and 1200# sandpaper to remove impurities and oxide films on the surface, then wash with acetone to remove oil and clean the surface, and then KH550 silane coupling agent, deionized Water and ethanol are mixed evenly at a volume ratio of 1:1:4, and the mixed solution is hydrolyzed at room temperature for 20 minutes, and then the surface of the substrate is soaked in the hydrolysis solution. After 15 minutes, the sample is taken out and placed in a drying oven at 100°C for 1 hour. At this time, a uniform and dense silane film is attached to the surface of the metal substrate.

[0045] 2) Preparation of gouging protective coating on the surface of hypersonic rocket skid slide rail

[0046] To p...

Embodiment 2

[0051] A method for preparing a gouging protective coating on the surface of a hypersonic rocket sled slide rail, comprising the following steps:

[0052] 1) Substrate surface pretreatment

[0053] First, the surface of the U71 Mn steel substrate is polished step by step with 240#, 600#, and 1200# sandpaper to remove impurities and oxide films on the surface, then wash with acetone to remove oil and clean the surface, and then KH550 silane coupling agent, deionized Water and ethanol are mixed evenly at a volume ratio of 1:1:4, and the mixed solution is hydrolyzed at room temperature for 20 minutes, and then the surface of the substrate is soaked in the hydrolysis solution. After 15 minutes, the sample is taken out and placed in a drying oven at 100°C for 1 hour. At this time, a uniform and dense silane film is attached to the surface of the metal substrate.

[0054] 2) Preparation of gouging protective coating on the surface of hypersonic rocket skid slide rail

[0055] To p...

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Abstract

The invention discloses a surface chiseling protective coating for a hypersonic rocket sled slide rail and a preparation method thereof. The preparation method comprises the following steps: 1, pretreating the surface of a matrix; 2, preparing a PES / E51 / polyamide system in proportion; and 3, directionally and uniformly spraying the powder onto a metal matrix by adopting a directional spraying technology. The bonding strength of the coating and a metal matrix is high, the impact resistance is good, and the chiseling phenomenon on the sliding rail can be effectively relieved.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a protective coating for chipping on the surface of a slide rail of a hypersonic rocket skid and a preparation method thereof. Background technique [0002] The rocket sled test system is a large-scale ground dynamic simulation equipment, which is mainly used to study a series of technical problems encountered in the high-speed and high-acceleration operation of aviation, aerospace and other national defense weapons and equipment. When the rocket sled runs at hypersonic speed, severe friction and wear occurs between the sliding shoes and the sliding rails, and at the same time, accompanied by high-frequency impact, chiseling is easy to occur between the shoe and rails, which damages the structure of the sliding rails and leads to premature failure of the sliding rails of the rocket sled. invalid. Therefore, it is of great significance for the success ...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/65B05D7/14B05D3/10
CPCB05D3/102B05D7/14C09D163/00C09D7/65C08L81/06
Inventor 蔡洪能黄亚萍刘阳董晓雪孟令奇孙杰
Owner XI AN JIAOTONG UNIV
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