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How to test the hardness of pearl cotton

Number of hits: Updated: 20 / 08 / 21 14:27:08 source: jsjias.com close Sharing:
Pearl cotton is very suitable for packaging materials, especially for those electronic equipment, glass bottles and other important equipment as well as fragile products. Sometimes we will judge the quality performance according to the hardness, so as to decide what to pack. How to test its hardness? Different categories have different testing methods.
1. Brinell hardness
A certain size of hardened steel ball is pressed in with a certain load Pearl cotton The ratio of the load to the indentation area on the surface of the material after unloading is the Brinell hardness value, in kgf / mm2.
2. Rockwell hardness
When HB > 450 or the sample is too small, Brinell hardness test can not be used, but Rockwell hardness measurement is used. It is a diamond cone with a top angle of 120 ° or a steel ball with a diameter of 1.59 and 3.18 mm, which is pressed into the test under a certain load Pearl cotton On the surface of the material, the hardness of the material is calculated by the depth of the indentation.
3. Vickers hardness
A diamond square cone impactor with a load of less than 120kg and a top angle of 136 ° was pressed into the surface of the material Pearl cotton The surface product of indentation pits divided by the load value is the Vickers hardness HV value.
According to the above several methods can easily test the hardness of pearl cotton, after knowing their hardness, we can choose different packaging methods according to different hardness. When choosing it, it will also be analyzed from the hardness.
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Zibo Economic Development Zone, Shandong Province

Contact person: manager Liu mobile phone: 13589525395
Tel: 0533-6502959 Fax: 0533-6502959

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