Pressure vessel, English: pressure vessel, refers to the closed equipment containing gas or liquid and bearing a certain pressure.
1, pressure vessel manufacturing process can be generally divided into: raw material acceptance process, marking process, cutting process, rust removal process, mechanical processing (including trimming, etc. ) process, rolling process, assembly process, welding process (product welding test plate), nondestructive testing process, hole marking process, general inspection process, heat treatment process, pressure test process and anti-corrosion process.
2. Different welding methods have different welding processes. The welding process is mainly determined according to the material, brand, chemical composition, structural type and welding performance requirements of the welded parts. First of all, the welding methods should be determined, such as manual arc welding, submerged arc welding, argon tungsten arc welding and gas shielded welding. There are many welding methods, which can only be selected according to the specific situation. After the welding method is determined, the welding process parameters are determined. The types of welding process parameters are different. For example, manual arc welding mainly includes: covered electrode model (or brand), diameter, current, voltage, welding power supply type, polarity connection, number of welding layers, number of welding passes, inspection method, etc.