Multi Finger Scratch/Mar Tester uses tungsten carbide as a scratch to accurately detect surface damage caused by unconventional physical forms (such as scraping, grasping, planning etc). It can be used to detect the wear resistance of plastic parts in automobile interior and exterior trim, and can also be used for the testing of hard material wear, paint, ink, soft metal, oil carpet and other materials.
The instrument includes a pneumatically driven, moveable sledge to which the test sample is mounted. The sledge moves in a linear fashion, and is operated by a control knob for one or multiple pass testing. An electronic timer displays the rate of speed, which can be controlled by reducing or increasing air pressure.
A gantry supports five independent splined-fingers, which provide a constant, vertical load on interchangeable scratch pins (1.0mm or 7.0mm diameter hemisphere). The gantry system includes a handle to raise and lower the arms. In addition, five support rests are incorporated to allow one or more arms to be moved to an upright, rest position such that the arm does not contact the specimen during testing.
Standards：
Ford BN 108-13 Resistance to scratching
General Motors DMN3943、Danmler-Chrysler LP-463DD-18-01
Accessories：
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Pneumatic, mobile platform;
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Regulator operation control
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With the weights of the five shaft scraping fingers
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Nine weight settings (2N, 3N, 4.5N, 5N, 6N, 7N, 10N, 15N, 20n)
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Interchangeable scratches and scratches tool
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A solid spring sample holder
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Detachable inspection table protection board
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Precise to 1/100 second electronic timer
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Lubricant air conditioning controller with internal lubrication
Technical Parameters
Standard configuration
Scraper components (5 pieces)
Scraping fingertips: diameter 1.0mm spherical scraping fingertips (5PCS)
Scratch fingertips: diameter 7.0mm spherical scraper tip (5PCS)
Weights set
Digital electronic timer
Adjustable sample holder (2PCS / set)
Optional accessories
1.0mm tungsten carbide scratch fingertips
7.0mm tungsten carbide scratch fingertips
But also in accordance with customer requirements special production
Weight optional accessories
Weight set: including 8N, 13N, 18N
Weight 25N
