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Passenger train spraying method

A railway passenger car and topcoat technology, which is applied to coatings, devices for coating liquid on the surface, special surfaces, etc., can solve problems such as rework, increase the spraying cycle, shrinkage cavity, etc., to improve smoothness, reduce spraying times, The effect of reducing material cost

Inactive Publication Date: 2017-02-22
CRRC TANGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But existing this method can occur paint slag, shrinkage cavity and other defects (as figure 1 shown), and cannot be removed by subsequent grinding, resulting in rework and increased spray cycle time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] This implementation provides a method for spraying a railway passenger car, which is used to spray the outer surface of a railway passenger car to obtain a specified color, including the following steps:

[0021] A ribbon topcoat with a viscosity of 19.5 seconds (Pa-4 viscometer) was formulated. Specifically, pre-stir the light yellow main agent (light yellow acrylic polyurethane enamel CSRH3643) for 1 minute, then continue to stir the light yellow main agent and add a curing agent (acrylic polyurethane curing agent CSRH3600), wherein the light yellow main agent and curing The weight ratio of the agent is 5:1. After all the curing agent is added, continue to add the thinner (acrylic polyurethane thinner T012) while stirring. Continue to stir for 3 minutes until the three are evenly mixed to obtain a ribbon topcoat with a viscosity of 19.5 seconds (paint-4 viscometer).

[0022] A main color topcoat with a viscosity of 18.9 seconds (Pa-4 viscometer) was prepared. Speci...

Embodiment 2

[0031] This implementation provides a method for spraying a railway passenger car, which is used to spray the outer surface of a railway passenger car to obtain a specified color, including the following steps:

[0032] A ribbon topcoat with a viscosity of 17 seconds (Pa-4 viscometer) was formulated. Specifically, pre-stir the light yellow main agent (polyurethane topcoat\Y06 light yellow\HJ500J) for 2 minutes, then continue to stir the light yellow main agent and add curing agent (polyurethane topcoat curing agent HJ500J), of which the light yellow The weight ratio of main agent and curing agent is 5:1. After all the curing agent has been added, continue to add the diluent (polyurethane diluent) while stirring. Continue stirring for 1 minute until the three are evenly mixed to obtain a ribbon topcoat with a viscosity of 17 seconds (paint-4 viscometer).

[0033] Prepare a main color topcoat with a viscosity of 25 seconds (Pa-4 viscometer). Specifically, pre-stir the olive g...

Embodiment 3

[0042] This implementation provides a method for spraying a railway passenger car, which is used to spray the outer surface of a railway passenger car to obtain a specified color, including the following steps:

[0043] A ribbon topcoat with a viscosity of 25 seconds (Pa-4 viscometer) was formulated. Specifically, pre-stir the light yellow main agent (polyurethane solid color topcoat\Y06 light yellow\JY002) for 3 minutes, then continue to stir the light yellow main agent and add curing agent (polyurethane solid color topcoat curing agent JY) , wherein the weight ratio of light yellow main agent and curing agent is 5:1. After all the curing agent is added, continue to add the thinner (polyurethane thinner JY) while stirring. Continue to stir for 5 minutes until the three are evenly mixed to obtain a ribbon topcoat with a viscosity of 17-25 seconds (paint-4 viscometer).

[0044] A main color topcoat with a viscosity of 17 seconds (Pa-4 viscometer) was prepared. Specifically, ...

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Abstract

The invention provides a passenger train spraying method. The passenger train spraying method comprises the following steps: colored tape finish paint with a viscosity of 17-25 s and main color finish paint with a viscosity of 17-25 s are prepared; the colored tape finish paint is sprayed on a middle coating layer of the outer surface of a passenger train; after the colored tape finish paint is dried, a shielding belt is bonded on the outer surface thereof; the main color finish paint is sprayed on the surface of the colored tape finish paint bonded with the shielding belt; and after the main color finish paint is dried, the shielding belt is removed. The passenger train spraying method shortens the spraying period.

Description

technical field [0001] The invention relates to a method for spraying railway passenger cars, which belongs to the technical field of rail vehicle manufacturing. Background technique [0002] The exterior surfaces of railway passenger cars all need to be sprayed with paint to achieve the purpose of anticorrosion and beauty. The outer surface of existing railway passenger cars generally uses olive green as the main color, and then uses light yellow spray-painted ribbons at specific positions. Specifically, when spraying, after the intermediate coating is completed, use the main color topcoat (olive green) to spray for the first time, then use the ribbon topcoat (light yellow) for spraying, and finally use the main color topcoat (olive green) to spray for the second time. all over. But existing this method can occur paint slag, shrinkage cavity and other defects (as figure 1 shown), and this defect cannot be eliminated by subsequent grinding, resulting in rework and increas...

Claims

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Application Information

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IPC IPC(8): B05D5/06B05D1/32
CPCB05D1/32B05D5/06
Inventor 高猛董双良宗建平王若钦王艳李研
Owner CRRC TANGSHAN CO LTD
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