Temperature impact test of steel pipe
Temperature impact test of steel pipe
The purpose of temperature impact test of steel pipe is to determine whether the performance of steel pipe fails when it is subjected to a series of impacts at normal and ultimate temperatures.
Temperature impact test, also known as cold and hot impact test or high and low temperature impact test, is used to test the adaptability of steel tube products to the rapid changes of ambient temperature. In some cases, it can also be used for environmental stress screening test.
Temperature impact test
The normal temperature impact test is conducted at room temperature, usually within 23 + 5 degrees.
Low temperature impact test; Store in low temperature medium for a certain period of time, make the temperature meet the requirements of rapid removal to complete the impact test.
1. use medium can be ice water mixture (0 degrees Celsius)
2. Other temperatures can be kept in a cryogenic tank. Alcohol or liquid nitrogen can be used to keep the sample warm at different temperatures.
The general standard of temperature impact test does not mention or stipulate the initial temperature of temperature impact test, but this is a problem that must be considered when the test is carried out, because it involves whether the test is finished at low or high temperature, thus deciding whether it is necessary to dry the steel pipe, resulting in prolonging the test time.
If the standard product is removed from the cold and hot impact test chamber at the end of the test, it should be restored under normal atmospheric conditions until the steel pipe sample reaches a stable temperature. This operation will inevitably lead to condensation introduction temperature on the surface of the test steel pipe sample. Thus changing the nature of the test.