CMT Weldeing Defect: Slag Inclusions Visualized #CMT

A very interesting re-share of a welding defect captured using our CAVILUX laser illumination and a high-speed camera. We have circled the defect in this footage which is also slowed down a bit so you can easily identify it. TWI Global describes slags as “the residue of the flux coating in MMA welding, it is principally a deoxidation product from the reaction between the flux, air and surface oxide. The slag becomes trapped in the weld when two adjacent weld beads are deposited with inadequate overlap and a void is formed. When the next layer is deposited, the entrapped slag is not melted out. Slag may also become entrapped in cavities in multi-pass welds through excessive undercut in the weld toe or the uneven surface profile of the preceding weld runs”. While there could be a variety of reasons behind slag inclusions, in this case the defect was caused by too much silicone in the process, and to avoid this defect, a filler wire with less silicone should be used. Let us know in the comments which welding defect you would like to see. We might be able to make your wish come true. . . . . . . #welding #weldingsmostwanted #weldinglife #metal3Dprinting #weldingschool #weldporn #additivemanufacturing #weldingtraining #weldingcareer #weldingcamera #weldingaddicts #weldcamera#weldingtipsandtricks #weldingnation #SuperSloMo #welder #CMT #laserillumination #seewhatyouhavemissed #CavitarLasers #3Dprinting #WeldingView #fronius #CAVILUX