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Detection device for hygroscopic property of vehicle coating welding seam sealant

A technology of moisture absorption performance and detection device, which is applied in the direction of measuring device, material inspection product, instrument, etc., can solve the problems of inability to produce and accurately reflect the moisture absorption performance of PVC weld sealant, so as to avoid foaming defects. The effect of risk, loss reduction, and improved sealing effect

Inactive Publication Date: 2019-02-19
SAIC MAXUS AUTOMOTIVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this testing scheme cannot accurately reflect the hygroscopic performance of PVC weld sealant because it cannot produce a weld sealant strip with the correct film thickness when making the strip.

Method used

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  • Detection device for hygroscopic property of vehicle coating welding seam sealant
  • Detection device for hygroscopic property of vehicle coating welding seam sealant
  • Detection device for hygroscopic property of vehicle coating welding seam sealant

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Please see attached figure 1 , attached image 3 and attached Figure 4 , a detection device for the hygroscopicity of a vehicle coating weld sealant, comprising a detection board 1 and a rubber strip production groove 2, the rubber strip production groove 2 is a wedge-shaped structure and is set at one side edge of the detection board 1, and the rubber strip The height range of the production groove 2 is 0-4mm, and the thickness of the rubber strip production groove 2 gradually increases, which can cover different thickness ranges of the rubber strips in the actual detection. The length of the rubber strip production groove 2 is 50-70mm, preferably 60mm; 1 Carry out scraping treatment at the glueing place, so that the weld sealant forms a wedge-shaped rubber strip 4 in the strip production groove 2.

[0021] Please see attached fig...

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Abstract

The invention discloses a detection device for hygroscopic property of vehicle coating welding seam sealant. The detection device comprises a detection plate (1) and a rubber strip manufacturing groove (2), the rubber strip manufacturing groove (2) is a wedge-shaped structure and is formed at one side edge of the detection plate (1); the detection plate (1) is subjected to glue scraping treatmentat the glue adhesive, so that the welding seam sealant forms a wedge-shaped rubber strip in the rubber strip manufacturing groove (2). The height range of the rubber strip manufacturing groove (2) is0-4mm, the length of the rubber strip manufacturing groove (2) is 50-70 mm, and the two ends of the detection plate (1) are bent to form a U-shaped part. According to the detection device for hygroscopic property of vehicle coating welding seam sealant, the thickness range of the rubber strip which can generate foaming defects can be detected, the risk of foaming defects can be avoided in automobile coating, and the sealing effect of the coating welding seam sealant is improved.

Description

technical field [0001] The invention relates to the field of automobile painting, in particular to a detection device for the hygroscopicity of a welding seam sealant for automobile painting. Background technique [0002] The PVC weld sealant used in automobile painting has the characteristic of absorbing water vapor in the air. After the glue is exposed to the air for three days, bubble defects will appear after baking. This phenomenon is called hygroscopic foaming defect. [0003] At present, the scheme for testing the hygroscopicity of PVC weld sealant is: use the glue gun on the construction site on the electrophoresis plate, simulate the state of manual glue on site to make a strip, then bake according to the requirements of the plan, and observe the surface of the strip after cooling Whether there are bubble defects; if there are bubble defects, use a film thickness meter to measure the film thickness at this place. However, this detection scheme cannot accurately ref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/44
CPCG01N33/445
Inventor 陆定凯冯晶马宁
Owner SAIC MAXUS AUTOMOTIVE CO LTD
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