The five-finger scratch tester is widely used in the automobile industry. It mainly tests the wear resistance of smooth and corrugated plastic trim in interior and exterior trim. In addition to material and product development, it also applies to quality control. The five-finger scratch/scratch tester is designed to test plastic material evaluation, hard material wear resistance, paint, ink, soft metal, linting carpet, accessories and other materials. The instrument meets a variety of testing standards, and can customize the motion travel, speed and reciprocating motion cycle of the test platform according to customer requirements. Five-finger scraping tester test: the sample on the test platform contacts five scraping fingers or one plastic scraping finger and the weight applied above it. During the test, the test platform moves and scratches are left on the surface of the sample. According to the depth of scratch to judge the scratch resistance of the sample. The samples may be plastic plates, test plates coated with paint and varnish, etc.

1.1 test principle

Five-finger scraping tester test: the sample on the test platform contacts five scraping fingers or one plastic scraping finger and the weight applied above it. During the test, the test platform moves and scratches are left on the surface of the sample. According to the depth of scratch to judge the scratch resistance of the sample. The samples may be plastic plates, test plates coated with paint and varnish, etc.

Technical parameters:

1. Travel range: 10-200mm

2. Speed range: 10-200mm/s

3. Speed buffer: 10±1mm

4. Diameter of metal scraping head: 0.5mm, 0.75mm, 1mm(Erichsen318), 3mm, 5mm, 7mm

5. Material of metal scratch head: tungsten carbide USES tungsten carbide as scratch finger to reasonably detect the surface wear damaged by unconventional defined physical forms (such as scratch, scratch, plane, etc.).

6. Total weight of pressurized weight and scraping component: 2N, 3N, 5N, 7N, 8N, 10N, 12N, 15N, 20N (optional) the mass error is no more than 1%

7. Plastic finger scraping: polymethyl methacrylate (PMMA) diameter 16mm thickness 1mm finger scraping edge radius 0.5mm hardness shore D852

1.2 test standards

This paragraph meets the following criteria:

FORD FLTM BN 108-13

GMW 14698 (B)

Mr BO - 162-01

GMN 3943

Nissan NES M0159

GB/T 2918, GB/T 6151, GB/T 8424.3, PV3952, BMW gs97034-2, BMW gs97034-9, GMN 3943-2003, FLTM BN 108-13, std1024-3113, GMW 14698-a, GMW 14688