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Why glass stress testing

  • Source: Unknown
  • Date: June 24, 2020
  • Number of views:
Glass Stress detector It is named after the application of polarized light interference principle to check the internal stress of glass. It is specially used to detect the stress index of glass bottles, which can be used to detect the stress index of glass containers such as ampoules, vials, infusion bottles, wine bottles, jars, cosmetics bottles, and to control the quality of glass bottles. Why should glass stress test be done? Shenzhen Dongyi Precision Equipment Co., Ltd. shares with you:
 
The stress of glass directly affects the strength of glass. The thermal cracking of glass is caused by excessive thermal stress; The broken glass is caused by excessive mechanical stress caused by mechanical impact force or impact force; The self explosion of glass is caused by the excessive stress inside the glass. In addition, the increase in the strength of the glass due to thermal or chemical tempering is caused by the increase in the compressive stress on the surface of the glass. Therefore, the stress and strength of glass are closely related. Most of the stresses that can be detected by polarizing stress meter are thermal stresses. Thermal stress is caused by temperature gradient. This is because glass is a kind of amorphous product solidified by high temperature melting and rapid cooling. Therefore, during the production process, the temperature change of all parts on the glass plate surface cannot be uniform, so thermal stress will be generated. Because of this, the glass bottle needs to go through the annealing process, but there will still be residues. With the help of the glass stress detector of Shenzhen Dongyi Precision Equipment Co., Ltd., it is possible to determine whether the residual stress of glass bottles meets the requirements of relevant standards.
 
usage method
1. Tool: glass stress detector.
 
2. Operation steps
 
(1) Turn on the power supply, turn on the switch, and the light will be on.
(2) Place the tested glass between the polarizer and polarizer of the instrument.
(3) The inspector can observe the stress around the lens in the lens ring from the up direction of the polarizer.
(4) According to the observed stress, judge whether the stress around the lens is uniform or needs to be corrected.
 
The above is the sharing of Shenzhen Dongyi Precision Equipment Co., Ltd. on "Why should we do glass stress testing?". Glass stress detection is very important in glass quality detection. Shenzhen Dongyi Seiko Equipment Co., Ltd. specializes in the supply of stress testers, glass stress testers, Japanese original stress testers, fsm-6000le surface stress testers and other stress detection equipment, and provides professional laboratory solutions and equipment support services. Consulting hotline: 400-992-8117
 

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