How to check whether the stress-relief heat treatment has been carried out successfully
Thread Content
Besides graphs, what other methods are there to determine whether the stress-relief heat treatment has met the requirements?
This post was last edited by ylb913 on 2015-8-21 at 12:24. Generally, no inspections are carried out; the construction management unit should just check the records, while at the installation site we look for signs. But I’ve seen cases where hardness was measured in order to determine whether heat treatment was necessary.
Stress measurement can detect stress-relief heat treatment
Generally, it is to measure the hardness of the base material after heat treatment
Base material hardness? Whether to inspect the welds or not
I heard that there is a method using X-ray diffraction to detect stress
The problem is that these standards only provide a general direction. . And there are no specific rules for implementation. . For example, what materials to use, and at which locations the hardness after stress relief should be below what value. .
Base metal and joint hardness + post-weld stress tester
Regarding the testing of hardness and stress after heat treatment of equipment, what standards specify these requirements (including the hardness values, as well as how stress is measured and what values it should reach)? I recently came across a drawing that requires overall heat treatment after welding. Control the hardness of the welded joint to HB≤200 (single value). It is based on JB/T6050?
The metallographic structure analyzer can detect the crystal state
It’s just necessary to conduct a test.