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2022-06-15 0 Views

Germany byk PE-5780 Balanced Rod Attachment and scratch hardness tester

Germany byk PE-5780 Balanced Rod Attachment and scratch hardness tester

Release time: 2021-04-28 Hits: 950

One Introduction: kCITextile Testing Instruments, Testing Equipment Manufacturer

1. Hardness kCITextile Testing Instruments, Testing Equipment Manufacturer

The definition of hardness has some misunderstandings in the previous coating industry. Most coatings have sticky elasticity, so they cause sinking to some extent. Therefore, the DIN 55 945 is as follows: hardness is the resistance of coatings to stress, friction and scraping of mechanical forces such as mechanical forces. kCITextile Testing Instruments, Testing Equipment Manufacturer

2, the hardness of the string kCITextile Testing Instruments, Testing Equipment Manufacturer

This method evaluates the hardness by measuring the attenuation time of the swinging of the swing. The pole is supported by two stainless steel balls on the surface of the coating. There is a physical relationship between the oscillating time, amplitude and geometric size of the pole. The elasticity of coatings determines the hardness of the coating. kCITextile Testing Instruments, Testing Equipment Manufacturer

When the swing rod is placed on the surface, the ball rolls back and forth on the surface and puts pressure on the coating surface. According to the elasticity of the coating, the oscillating will be or weak. Without elasticity, the swing will vibrate ly. Highly elastic surfaces will cause attenuation to accelerate. kCITextile Testing Instruments, Testing Equipment Manufacturer

3, scratch hardness kCITextile Testing Instruments, Testing Equipment Manufacturer

This is an ideal method for quickly evaluating in painting products. The measurement result cannot be associated with any other hardness measurement method. The scratch test can be performed with a metal needle (DUR-O-TEST) or a pencil. Different hardness level pencils are scratched on the surface of coating to determine which pencil can cause indentation. This method is only suitable for smoother surfaces. kCITextile Testing Instruments, Testing Equipment Manufacturer

Testing two types of string is standard: kCITextile Testing Instruments, Testing Equipment Manufacturer

kCITextile Testing Instruments, Testing Equipment Manufacturer

Trace hardness instrument


kCITextile Testing Instruments, Testing Equipment Manufacturer

This method is suitable for coating to measure plastic deformation behavior. The coating with elastic deformation should not be evaluated in this method, because when the instrument is moved, the elastic coatings will display very small or no indentation.

kCITextile Testing Instruments, Testing Equipment Manufacturer

The instrument has a dual cone module, which placed it on the coating for 30 seconds. Use the precision microscope to observe the pressure marks, and then calculate the following formula

kCITextile Testing Instruments, Testing Equipment Manufacturer

Hardness: Pressure marks (British) 100mm/indentation length

kCITextile Testing Instruments, Testing Equipment Manufacturer