Solutions to Slag Inclusion Defects

To improve the welding quality of spiral steel pipes and effectively address slag inclusion defects, it is essential to properly handle the bevel dimensions. Based on practical experience, the bevel dimensions should be determined accurately to effectively prevent the occurrence of slag inclusion defects. Moreover, attention should be paid to adjusting the welding current and controlling the welding speed, ensuring uniform heating of the steel plate and thereby avoiding oxide residue from excessive cooling or heating. Close attention should also be given to the swing position of the welding electrode to prevent significant deviations in its movement path, which could compromise welding quality. Excessive welding slag can also lead to slag inclusion, so it is important to promptly clean up welding slag during welding operations. The quality of the welding electrode itself also has a significant impact on slag inclusion defects. If eccentric electrodes or unevenly distributed welding materials are used, a large amount of slag inclusion will be generated. Therefore, during the selection process of welding electrodes, irregularly shaped electrodes or those with improperly positioned cores should be sorted out, which can effectively avoid the occurrence of slag inclusion defects.