Solutions to Slag Inclusion Defects

To improve the welding quality of spiral steel pipes and effectively address slag inclusion defects, it is crucial to properly handle the bevel dimensions. Determining the bevel dimensions based on practical experience can effectively prevent the occurrence of slag inclusion defects. Moreover, attention should also be paid to adjusting the welding current and controlling the welding speed, which ensures uniform heating of the steel plate and thereby avoids oxide residue under either excessively cold or hot conditions. Close attention should also be given to the swing position of the welding electrode to ensure that its trajectory does not deviate significantly, 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 material 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 incorrectly positioned cores should be sorted out, which can effectively prevent the occurrence of slag inclusion defects.