There are two main aspects of fasteners in the testing process:
The first one is the pull test. This test is mainly used to detect the bearing capacity of the fastener. It is divided into two steps to complete:
1, instant pull test, mainly used for buckle, D buckle, day buckle, when the test suddenly encountered a strong pull, the strength of the fastener.
2, the lasting pull test, its main principle in determining the load of a certain weight, the time value of the fastener.
The second one is the temperature test. This is mainly to test the endurance of fasteners at unconventional temperatures. It is divided into two kinds of tests: high temperature and low temperature.
1, high temperature is usually set at 70 degrees Celsius
2, low temperature is usually set at minus 30 degrees. The time is 24 hours and then test the change in intensity.
Third, it is salt spray test. This test is mainly to monitor the anti-salinity of fasteners. Some products can only be transported by sea, and long-term offshore operations will affect the quality of the product. This test is divided into four steps.
1, the fastener is placed in seawater soak 72 hours
2, the soaked fasteners exposed to sunlight for 5-7 days
3, after the completion of the test intensity has not changed too much.
4, there are some such as anti-acid test, etc., can be based on different needs and materials to carry out the corresponding value for testing, including the metal buckle but also on its anti-rust, anti-corrosion, resistance and other tests , Plastic fasteners If there is post-processing products, such as electroplating, water dyeing, grease and other processes, but also to further test these additional procedures are qualified standards.
The above is a brief description of the fasteners. With the continuous development of the products, the varieties are increasingly diversified, and the detection in this area is becoming more and more strict.
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