Scratch test method for automobile plastic parts

The scratch test is a routine test item for the surface quality control of automobile interior and exterior trims. It mainly checks the changes that occur when various automobile interior and exterior trim surfaces are scratched by hard objects and other environmental stresses, such as leaving scratches on the paint and plastic surface, causing discoloration, gloss changes, and fuzzing on the fabric surface. The scratch tester for automobile interior and exterior trims is an experimental instrument for the scratch test. In addition, Shanghai Qianshi R&D engineers make the following brief description of several methods for scratch testing of automobile interior and exterior trims, hoping to help every customer.

Shanghai Qianshi Precision Electromechanical Technology Co., Ltd. was established in 2012, focusing on the research and development, design, and production of textile testing instruments, providing textile testing instruments and services for academic research units and testing institutions. Shanghai Qianshi is currently one of the most competitive and R&D-capable textile testing instrument manufacturers in China. The R&D team is composed of a group of experienced engineers. We are committed to serving customers wholeheartedly and striving to promote technological innovation in textile testing instruments.

Test method:

1.Five-finger scratch test method:

• The equipment used is a five-finger scratch tester, the main movement mode is linear unidirectional, sample movement or scratch head movement.

• Suitable samples: plastic parts, painted parts, self-adhesive foils

• Meet 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-grid tester, the main movement mode is linear unidirectional multiple scratching, and the scratch head moves.

• Suitable samples: plastic parts, plastic painted parts

• Meet standards: PV 3952

3. Hardness test pen scratch method:

• The equipment used is a hardness test pen, and the main movement mode is linear unidirectional scratch head movement, manual.

• Suitable samples: coated parts, self-adhesive foils

• Compliant standards: GMW 14698, TL 226

4. Coating scratch hardness tester scratch method

• The equipment used is a coating scratch hardness tester, the main movement mode is linear motion and sample movement.

• Suitable samples: coated elastic parts, coated plastics, textiles, etc.

• Compliant standards: GME 60248

5. Paper clip scratch method

• The scratching head is a paper clip, linear unidirectional sample movement, manual.

• Suitable samples: coated plastics

• Compliant standards: GMW 14130

2024-11-22 11:09