Car body adaptable to high-temperature and high-humidity areas and coating method thereof

A coating method and vehicle body technology, which are applied to the device for coating liquid on the surface, the coating, the pretreatment surface, etc., can solve the problems of coating peeling, inability to adapt to the high temperature and high humidity environment, etc., and improve the weather resistance. Effect

Inactive Publication Date: 2010-09-22
CRRC TANGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a car body coating method, which can solve the problem that t

Method used

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  • Car body adaptable to high-temperature and high-humidity areas and coating method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: Embodiment of the coating method of the side wall of the car body

[0027] In order to meet the operating requirements of vehicles in high-temperature and high-humidity environments, the coating system for the side wall of the car body includes primer, putty, anti-corrosion paint, primer, top coat and varnish. The specific coating method includes the coating of the side wall of the car body The surface is subjected to mechanical pretreatment by spraying river sand, primer coating, putty scraping, anti-corrosion paint spraying, mid-coat spraying, top coat spraying and overcoat varnish etc. The thickness indexes of varnish and varnish are 60μm, 3mm, 40μm, 40μm, 60μm and 40μm respectively, where:

[0028] The primer is epoxy antirust paint: the molecular skeleton of epoxy phenolic resin is mainly composed of carbon bonds and ether bonds, and its chemical properties are stable. After curing, it forms a dense cross-linked network structure. Low, so it has exce...

Embodiment 2

[0034] Embodiment 2: Embodiment of the coating method of the roof

[0035] The roof of the car is directly exposed to harsh weather conditions such as strong ultraviolet light and rain, so a coating system with excellent comprehensive performance is required. For this reason, this preferred embodiment uses fluorocarbon paint as the middle coat, top coat and varnish. Ultraviolet performance, weather resistance durability, acid and alkali resistance, high temperature medium resistance and excellent wear resistance; coupled with the low surface tension of the paint film, rainwater is not easy to stay on the paint film, and it is not easy to stick dust and easy to clean. The coating system of the embodiment of the vehicle roof coating method includes: epoxy antirust paint, fluorocarbon intermediate coating, fluorocarbon topcoat and fluorocarbon varnish.

[0036] The specific coating method of the roof includes mechanical pretreatment of the roof surface by spraying river sand, co...

Embodiment 3

[0037] Embodiment 3: Embodiment of the coating method of the underframe and the bogie

[0038] In high-temperature and high-humidity areas, the underframe and bogie of the vehicle are in a high-temperature and high-humidity state for a long time, and the operating environment is harsh. Referring to the ship coating process, epoxy anti-rust primer, epoxy high-build paint, high-solid polypropylene micro The heavy-duty anti-corrosion coating process of the elastic topcoat, the paint film is tough, water-resistant, wear-resistant, and collision-resistant, suitable for high-speed train underbody coating.

[0039] The specific coating methods of the chassis and bogies include mechanical pretreatment of the surface of the chassis and bogies by spraying river sand, coating epoxy anti-rust primer, spraying epoxy thick build paint and spraying high solid content Steps such as polypropylene microelastic topcoat, the thickness indicators of epoxy antirust primer, epoxy high build paint an...

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Abstract

The invention provides a car body adaptable to high-temperature and high-humidity areas and a coating method thereof. The car body comprises an end side wall, a car roof, a chassis and a bogie. The car body coating method comprises the following steps of: carrying out mechanical treatment, wall primer coating, puttying, wall anti-corrosion paint spraying, wall floating coat spraying, wall finish spraying and wall varnish spraying on the substrate of the end side wall; carrying out mechanical treatment, top primer coating, top floating coat spraying, top finish spraying and top varnish spraying on the substrate of the car roof; and carrying out mechanical treatment, chassis/bogie primer coating, chassis/bogie floating coat spraying and chassis/bogie finish spraying on the substrates of the chassis and the bogie. In the invention, mechanical pretreatment is used for replacing chemical pretreatment, which increases the adhesive force of coatings, and the problem that paint of various parts of the car body falls off from bottom layers is thoroughly solved; and the coating scheme of the car roof can solve the problem of car roof bleeding brought by strong ultraviolet irradiation, and the coating scheme of the end side wall improves the weather resistance of the whole coatings, thus the whole car body can meet the service requirements on high temperature and high humidity environment.

Description

technical field [0001] The invention relates to the technical field of car body protection, in particular to a car body coating method, and a car body that can adapt to the environment in high-temperature and high-humidity areas. Background technique [0002] High-temperature and high-humidity areas are generally tropical marine climates, with more rainy seasons, strong ultraviolet radiation, high temperature and high humidity, and a certain amount of salt in the air, which requires that the coating system of the vehicle not only has excellent corrosion resistance and UV resistance Radiant capability, good resistance to bending shrinkage, can also withstand years of erosion in salty humid air, and can maintain its luster without fading during the warranty period. [0003] Next, take the existing carbon steel rail vehicles exported to high-temperature and high-humidity areas as an example to illustrate the coating method of existing vehicles: [0004] Car body end and side w...

Claims

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Application Information

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IPC IPC(8): B05D1/36B05D3/12B05D7/24
Inventor 张宝祥
Owner CRRC TANGSHAN CO LTD
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