GB5310 high-pressure boiler seamless pipes
are commonly used in superheated steam pipes, heat exchangers and pipes for high-pressure equipment of high-pressure or ultra-high pressure boilers, and have high requirements for welding. Common process, if the welding quality is not good, it will affect the use effect of the pipe. Therefore, when welding the GB5310 high-pressure boiler seamless steel pipe with stable performance, it is necessary to do a good job in the group name inspection of the pipe, and also choose and GB5310. The high-pressure boiler seamless steel tube requires the same electrode for welding, so as to ensure that the GB5310 high-pressure boiler tube has a satisfactory welding quality.
1. Do a good job of quality inspection before welding
In order to ensure the welding quality of GB5310 high-pressure boiler seamless steel pipe, it should be checked before welding to ensure that the surface of GB5310 high-pressure boiler seamless steel pipe has no defects such as local scars and grooves. The welding end surface should also be polished flat, and there should be no cracks and heavy skins. The burrs, bumps, locks, slag, oxide skin, and other surface iron filings that affect the quality of the joint should be removed from the surface of the port.
2. Select the welding rod that meets the conditions
It is also an effective measure to ensure the welding quality of GB5310 high-pressure boiler seamless steel pipe, and the welding rod must be kept dry during use. During assembly, the weldment should be firmly pad, and reasonable measures should be taken to prevent additional stress and deformation during the welding process.
3. Don’t be casual ignition arc
When welding GB5310 high-pressure boiler seamless steel pipe, the arc should be placed in the groove or joint, and the arc should not be arbitrarily fired at the non-welded surface of the GB5310 high-pressure boiler seamless steel pipe. Moreover, the quality of arc initiation and arc termination should be guaranteed during the welding process, and the arc crater should be filled during arc termination. If the temperature during welding is lower than zero degrees Celsius, the GB5310 high-pressure boiler seamless steel pipe should be treated within a certain range at the beginning of the welding. Do preheat treatment first, and correctly control the shape and size of the weld pool.