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automatic pencil hardness tester

Keywords :
hardness tester / pencil hardness tester / automatic pencil hardness tester

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Five Advantages Of Products

  • Automatic pencil hardness tester is dedicated to the hardness test of various finished product spraying, such as: mobile phone shell, MP3/MP4 shell, laptop computer shell and other kinds of home appliances and digital products shell spraying hardness test.

  • The automatic pencil hardness tester machine is controlled by electric (semi-automatic). The automatic pencil hardness tester machine is actuated by a stepper motor Back and forth. 3. Automatic pencil hardness tester is low noise and stable! Test stroke can be adjusted according to specific requirements!

  • Automatic pencil hardness tester is low noise and stable! Test stroke can be adjusted according to specific requirements!

  • Automatic pencil hardness tester is easy to operate and after-sale guarantee.

  • The automatic pencil durometer tests the surface hardness of the coating layer by scratching the surface of the coating layer with a hardness pencil. The hardness pencil is fixed at a 45° Angle so that the front end of the pen is in contact with the surface of the coating layer. The softest pencil grade in which the coating will not cause damage (scratch) is considered as the hardness of the coating.

Product Details

Introduction of automatic pencil hardness tester:

     Specially used for hardness test of various finished products, such as: mobile phone shell, MP3/MP4 shell, laptop computer shell and other kinds of home appliances digital product shell coating hardness test. The machine is electric (semi-automatic) control, the machine through a stepper motor motion drive, to achieve

Forward and backward action, low noise, stable! Test stroke can be adjusted according to specific requirements!

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Product parameters of automatic pencil hardness tester:

Test Angle: 45 degrees

Load: Adjustable, 500g 250g 250g

Test platform moving speed: 5mm/ s, adjustable

Travel distance: 40mm

Platform: about 12x17cm, fixed sample

Power supply: 220V /50Hz

Accessories: Standard pencil 6B~6H 1 each, a total of 13 weights

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The test principle of automatic pencil hardness tester:

The hardness of the surface of the coating layer is tested by scratching the surface of the coating layer with a hardness pencil. The hardness pencil is fixed at a 45° Angle so that the front end of the pen is in contact with the surface of the coating layer, and the test platform is moved with appropriate load at a certain speed (JIS specification 0.5mm/ SEC) so that the surface of the coating layer moves through the pen center. The softest pencil grade in which the coating will not cause damage (scratch) is considered as the hardness of the coating.

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The use of automatic pencil hardness tester:

1. The pencil should be well planed, with graphite protruding about 5 mm. Special pencil planers included in the scope of supply can be used to achieve this requirement. Hold the pencil vertically, graphite side down against the sandpaper (400 particle fine) to smooth the graphite core and sharpen the edge.

2, clamp the pencil in the instrument, the pencil protruding 5mm, and then put the instrument on the surface of the template. The tachometer displays the motor speed in real time. The platform moves 1.75mm for each turn of the motor. Clamp the sample to be tested on the test platform.

3, choose the appropriate hardness of the pencil depends on the test. It is recommended to start with a medium soft pencil or a medium hard pencil and work your way up to finding the right pencil.

4. During the test, be careful not to confuse the pencil's word marks and penetration marks. If necessary, use a wet sponge or a soft eraser to remove excess line marks.

5. The numbers of both pencils are marked by pencil hardness. Pencil hardness such as 2H... 3H, meaning that the 2H pencil can leave a word mark on the surface while the 3H pencil can scratch the film slightly. The hardness of the film is 2H.

6. Paint with high pigment content or paint containing flake pigment is not recommended to use this test method for testing.


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