GB/T 6151 Multifunctional Scratch Tester Shanghai Chengsi Analysis of basic parameters of the instrument

Multi-function scratch tester This instrument scratch tester is suitable for a variety of automotive interior materials, such as plastics, rubber, leather, fabrics, coated materials, uncoated materials and other composite materials scratch resistance testing
.
The wear resistance instrument for actively detecting smooth and grained plastic trims in automobile interior and exterior trims is composed of two parts of scratching device, the left half can do five-finger/plastic finger scratch test, and the right half can do 100-grid scratch test
.
Both share a reciprocating mobile platform
.
This instrument meets a variety of test standards, and can customize the motion stroke, motion speed and reciprocating motion cycle
of the test platform according to customer requirements.
Scratch principle: automotive interior multi-functional scratch resistance tester is suitable for all kinds of automotive interior materials scratch performance testing instrument, the instrument integrates three domestic test standards (five-finger scratching method, hundred grid method, plastic scraping finger scratching method).

This test method is used to test the ability of
surface materials to resist damage caused by scraping fingers.
According to the nails or other hard objects that may be contacted in the use of materials, scraping fingers of different materials, acting on the surface of the sample with a certain pressure according to the specified direction, stroke and speed, the scraping head and the sample do relative movement, resulting in unidirectional, non-reciprocating straight line scraping trajectory, and the scratches are kept parallel
.
The final assessment of the material is the sensory level of the scratch, the chromatic difference between the scratched and unscratched areas, or the small scratching force
of the sample surface when damaged.
The instrument is composed of
motor drive mechanism, scratch assembly, sample clamping fixture, etc.
Scratching components include scratch brackets, scraping fingers, positioning sleeves, pressurization devices (weights and weight support bars), etc
.
The instrument can freely install, replace and disassemble scraping fingers of different specifications, and can implement uniform speed one-way linear scraping motion
under different loads.
The instrument adopts embedded system, man-machine interface operation to automate the control of the test process, and adopts precision servo motor and ball screw drive, which plays a decisive role
in the accuracy of scratch speed control under relevant standards.
The use of tungsten carbide material as scraping finger to increase the service life of the instrument, the instrument is made of aluminum alloy and stainless steel material with simple and light appearance and corrosion
resistance.
Applicable standard: GB/T 2918 Standard environment for state adjustment and test of plastic specimens GB/T 6151 Color fastness test General rules for testing GB/T 8424.
3 Color fastness test Color difference calculation PV3952 Volkswagen scratch resistance test method GS97034 Surface test of automotive interior materials and other technical parameters: 1, stroke range: 10-200mm2, speed range: 10-200mm/s3, speed buffer: 10±1mm4, metal scratch head diameter: 0.
5mm, 0.
75mm, 1mm (Erichsen318), 3mm, 5mm, 7mm 1.
4mm5, metal scratch head material: Tungsten carbide uses tungsten carbide as a scratch finger to accurately detect surface wear damaged by unconventionally defined physical forms (such as scraping, grabbing, planing, etc
.
).
。 6.
Total weight of pressurized weights and scratch components: 2N, 3N, 5N, 7N, 8N, 10N, 12N, 15N, 20N (can be optionally selected) The quality error does not exceed 1% In addition, customized weights can be selected 7.
Plastic scraping finger: polymethyl methacrylate (PMMA) diameter 16mm thickness 1mm The radius of the scraped finger edge is 0.
5mm The hardness is shore D8528, overall dimensions: 770×550×500mm9, weight: 50Kg10, power AC220V±10% 50Hz