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5 common car interior and exterior parts scratch test

2021/11/26

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Scratch test is a routine inspection item for the surface quality control of automotive interior and exterior parts. It is mainly used to check the changes that occur when various automotive interior and exterior trim surfaces are scratched by hard objects and other environmental stresses, such as scratches on paint and plastic surfaces. Marks, cause discoloration, gloss change, and cause fluffing on the surface of the fabric.
 

1. Five-finger scratch test method:

 
The equipment used is a five-finger scratch tester, the main movement mode is linear and one-way, sample movement or scratching head movement.
 
Suitable samples: plastic parts, painted parts, self-adhesive foil
 
Meet the standards: FLTM BO 162-01, FLTM BN 108-13, GMW 14698, GMN 3943

2. Grid scratch test method:

 
The equipment used is an electric cross-hatch tester, the main movement method is straight one-way multiple scraping, and the scraping head moves.
 
Suitable for samples: plastic parts, plastic painted parts
 
Meet the standard: PV 3952
 

3. Scraping method of hardness test pen:

 
The equipment used is a hardness test pen, and the main movement method is linear one-way scratching head movement, manual.
 
Suitable samples: coated parts, self-adhesive foil
 
Meet the standards: GMW 14698, TL 226
 

4. Scratch method of coating scratch hardness tester

 
The equipment used is a coating scratch hardness tester, the main movement mode is linear movement, and the sample moves.
 
Suitable samples: coated elastic parts, coated plastics, textiles, etc.
 
Meet the standard: GME 60248
 

5. Paper clip scraping method

 
The scraping head is a paper clip, linear and unidirectional sample movement, manual.
 
Suitable sample: coated plastic
 
Meet the standard: GMW 14130
 
 
The scratch tester for automotive interior and exterior parts is an experimental instrument for scratch testing. Standard Group (Hong Kong) Co., Ltd. is the manufacturer. Customers in need are welcome to inquire. In addition, the R&D engineers of Standard Group give a brief description of several methods for the scratch test of automotive interior and exterior trim as follows, hoping to help each customer.

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