成人在线免费观看视频_国产欧美色一区二区三区_国产精品久久久久久久一区探花_日本成人免费_国产亚洲精aa在线看_亚洲a免费_久久久婷婷五月亚洲97号色_国产一精品一av一免费_亚洲精品女_亚洲精品成a人在线观看_欧美精品在线一区二区_91影音

MITECH MLX-A、C、D Shore Rubber Durometer is simple, compact and portable, the reading is intuitive, and it is easy to use. It can be measured by hand or placed on the supporting load frame. It is widely used in the hardness measurement of rubber and plastic.

•  A type is suitable for hardness testing of low and medium hardness materials, general rubber, synthetic rubber, soft rubber, polyester, leather, wax, etc .
• D type is suitable for hardness testing of high hardness materials, general hard rubber, hard resin, acrylic, glass, thermoplastic, printing plate, fiber, etc
• C type is suitable for the hardness test of microporous materials for shoes made of rubber and plastic combined with foaming agent when the compression rate is 50% and the stress is above 0.049Mpa.

A steel press with a certain shape is pressed vertically into the sample surface under the action of the test force. When the surface of the pressure foot is completely attached to the surface of the sample, the tip surface of the pressure needle has a certain extension length L relative to the surface of the pressure foot. The value is used to characterize the Shore hardness. The L value is larger, the Shore hardness is lower, and vice versa.

The calculation formula is: HA = 100-L / 0.025; HD = 100-L / 0.025; HC = 100-L / 0.025. In the formula, HA is Shore A hardness. According to the formula, Shore A hardness is related to the displacement of the pressure pin. By measuring the displacement of the pressure pin, the Shore A hardness value can be calculated.

• Pointer indication, convenient, accurate and high reading;
• Hand-held design, easy to carry, can be handheld measurement, can also be installed on the supporting test rack for testing.

• Place the sample on a sturdy surface, hold the instrument so that the pressure pin is at least 12mm away from the edge of the sample, and press the pressure foot on the sample steadily until the pressure foot and the sample are completely released within 1s;
• Measure the hardness value 5 times at different positions at least 6mm away from the measuring point, and take the average value (the distance between the measuring points of the microporous material is at least 15mm);
• In order to stabilize the measurement conditions and improve the measurement accuracy, the hardness tester device should be measured on the same type of measurement rack.

• After the durometer is used, it should be wiped clean and placed in the instrument box, and placed in a dry place to prevent moisture;
• The measurement rack should be wiped frequently, and a small amount of anti-rust oil should be applied to prevent rust, and the No. 20 motor oil should be added to the moving parts;
• The durometer should be submitted to the inspection regularly according to JJG304-89.