The thermal shock tester is used to test the material structure or composite material, and to test the chemical changes caused by thermal expansion and contraction in the shortest time in a transient environment under extreme high temperature and low temperature. Or physical damage; thus confirming the quality and durability of the product. The test method of the thermal shock tester is as follows:
1. Sampling and judgment rules for thermal shock test machine:
1. The hot and cold impact testing machine for mass production, when there are more than 20 sets in batches, 2 units are sampled; when there are less than 20 units, 1 unit is sampled.
2. The type inspection items of the sample to be inspected shall be all qualified; otherwise, the inspection shall be doubled for the unqualified items;
If the second inspection is qualified, only the first inspection unqualified items will be repaired, and the sampling will be allowed to leave the factory after the sampling inspection; if there is still one unqualified sample in the second inspection, the batch of products will be rejected, such as the second. If all the samples are qualified, the batch is qualified.
Second, the type of inspection of the thermal shock test machine:
1. New product trial-type identification
2. The products officially produced have great changes in structure, materials, processes, production equipment and management, which may affect product performance.
3. When the product is mass-produced, check it regularly at least once every two years.
4. When the national quality supervision agency conducts quality supervision and inspection.
5. When the factory test result is significantly different from the previous type test result.
Christmas Makeup Brush,Christmas Makeup Brush Set,Makeup Brushes Christmas Set,Makeup Brush Set Christmas
Guangzhou Yafei Makeup Toiletry Co.,Ltd , https://www.yfmakeupbrush.com