What Are The Effects Of Low Temperature Tests On Products?

What are the effects of low temperature tests on products?
The impact of the low temperature test on the product is mainly reflected in the hardening and brittleness of the material, the damage and cracking, the decrease in strength, the increase in the viscosity of the lubricant, the decrease in the lubrication effect, and the change in the performance of electronic components. Low temperature tests generally do not cause permanent damage to the sample, so they are often scheduled early in the test sequence. The low-temperature test will greatly change the performance of the seal during the low-pressure test. The impact of the high-temperature test on the product is mainly manifested in the change of the physical properties and dimensions of the material, the reduction of the viscosity of the lubricant, the outflow of the lubricant and the loss of lubrication at the connection, and the overheating of the transformer and electromechanical components. Different Inconsistency in material expansion causes bonding of parts, changes in stability of electronic circuits, etc.
High temperature tests are generally scheduled early in the test period, following the initial power transport tests. High temperature testing will greatly help to enhance the effect of low pressure testing of seals. If it is desired to take advantage of the superposition effect between the various test effects as much as possible, the high and low temperature tests should be carried out after the mechanical tests such as vibration and impact, and before the low air pressure test, so as to obtain the best combined exposure effect.