Production equipment welding test plate problem
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Our company manufactures a coke tower. The material of the lower cylinder is 28, 30, and 32. The welding method is planned to use hand-held electrode arc welding and automatic submerged arc welding.； The upper section is 15CrMoR+0Cr13, and the welding method is planned to be hand-held arc welding and automatic submerged arc welding. How many types of welding test panels need to be made? Thanks!
First, make a 20-inch plate butt welding evaluation on the entire lower section. And when you do it, you have to do two things: One is electrode arc welding, and the other is submerged arc automatic welding. Pay attention to the groove form. You didn't write clearly about the material in the previous paragraph. What is it 15CrMoR+? Detailed analysis of specific issues? Is it composite board or something?
According to the regulations, consider the thickness of the cylinder, welding method, etc.
1. The materials, welding and heat treatment processes of the product welding test plate should be within the qualified range of the welding process qualification of the pressure component welding joint it represents. 2. When the welding process qualification coverage of different shell longitudinal welding joints on a pressure vessel is different, the test plates should be welded separately according to the corresponding welding processes corresponding to the different longitudinal welding joints. This equipment makes 2 sets of test plates according to different materials and another 2 sets according to different welding methods.
This first depends on the coverage of your welding procedure qualification. If you are within the same welding procedure qualification coverage, just make one piece. If multiple welding procedure qualifications are used, you will have to make multiple test plates. The conditions given by the poster are not complete enough. As for how many pieces to make, I believe no one can know!
The conditions given by the poster are not complete enough. As for how many pieces to make, I believe no one can know!
It's not clear. I think you should do two sets of process qualifications (each set must use two welding methods. Of course, if your company often uses similar equipment, you can also do separate assessments, but you have to do four sets). As for the thickness of the test plate for process qualification, just refer to the assessment range in JB4708. As for the break, refer to the welding break you plan to use.