Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Paint foaming test method

A test method and paint technology, applied in the field of automobile manufacturing, can solve problems such as undiscovered treatment methods, increased production costs, and troubles in vehicle manufacturing, and achieve the effect of avoiding large-area paint foaming and reducing the probability of paint foaming

Inactive Publication Date: 2018-11-13
SAIC VOLKSWAGEN AUTOMOTIVE CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Taking a certain car model as an example, mass-produced cars will have mass-produced paint blisters. The area of ​​the blister defect is large, which seriously affects the appearance of the vehicle and requires rework and re-spraying, which greatly affects the effectiveness of the vehicle and greatly affects the vehicle’s effectiveness. increased production costs
Moreover, there is a certain delay in the blistering defect, and there is also a risk that the defect will appear after sale and cause a greater impact
[0004] This kind of paint surface blistering defect is relatively rare. After consulting the data, no records of similar defects and corresponding treatment methods have been found. Therefore, this problem has brought great troubles to the production of vehicles.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Paint foaming test method
  • Paint foaming test method
  • Paint foaming test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Before introducing the paint bubbling test method of the present invention, the process of finding the cause of the paint surface bubbling defect is firstly introduced. Finding the cause of blistering defects on the paint surface is as important as proposing a test method for paint blistering.

[0026] In order to find the cause of the blistering defect on the paint surface, a large amount of data on the blistering defect on the paint surface was first collected. Through the analysis of the big data, it was obtained that the blistering defect on the paint surface has the following characteristics:

[0027] ●Looking from the appearance, the blisters on the paint surface are dense and raised, similar to pore groups. Blistered areas generally show the outline of handprints or have significant or polished wipe marks, indicating that there are obvious traces of human manipulation in defective areas.

[0028] ●Looking at the location, most of the blistering defects are locat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a paint foaming test method. The method includes the following steps: polishing an electrophoresed sample to form a polishing pattern on the sample; washing and drying the polished sample; preparing a foaming test solution and applying the foaming test solution to the sample, wherein the foaming test solution is artificial sweat; drying the sample to allow components of thefoaming test solution to be adhered to the polishing pattern; spraying and drying a floating coat, a colored paint and a varnish on the sample sequentially, wherein the floating coat, the colored paint and the varnish all cover the polishing pattern; baking the painted sample for first time; placing the baked sample in a constant temperature and humidity environment for second time; checking blistering of the paint on the sample. According to the test method, the salt tolerance of the paint is tested, and the probability of paint blistering is reduced by selecting the paint with high salt tolerance. Even if a small amount of salt is mixed in the production process, the paint with high salt tolerance can still avoid large area paint blistering.

Description

technical field [0001] The invention relates to the field of automobile manufacturing, more specifically, to the testing technology for paint spraying quality in the automobile manufacturing process. Background technique [0002] In the process of automobile manufacturing, unexpected and unpredictable defects are often encountered. For example, on a certain model, there is a group of defects of paint blistering at specific positions. [0003] Taking a certain car model as an example, mass-produced cars will have mass-produced paint blisters. The area of ​​the blister defect is large, which seriously affects the appearance of the vehicle and requires rework and re-spraying, which greatly affects the effectiveness of the vehicle and greatly affects the vehicle’s effectiveness. Increased production costs. Moreover, there is a certain delay in the blistering defect, and there is also a risk that the defect will appear after sale and cause a greater impact. [0004] This kind ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N33/32
CPCG01N33/32
Inventor 周杰邾立亮成亚君周世楠
Owner SAIC VOLKSWAGEN AUTOMOTIVE CO LTD
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More