Supplementary non-destructive testing based upon types of joint, rather than specific critical joints, is then specified. Work angle Work angle is the gun position relative to the angle of the welding joint, and it varies with each welding position and joint configuration see below. Also for this reason, weave beads should not be too wide. Here's a general summary of which size welders match up best with a given application. The joint design to be welded also is a factor. Drawn arc stud welding, process
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Weld Fusion vs. Weld Penetration
Operative submerged arc welding Image courtesy of Mabey Bridge Ltd. Set the power source according to the manufacturer's instructions for wire polarity. Completed tests are submitted to the independent examiner for visual examination and non-destructive testing in accordance with Table 1 of the Standard. The benefits of the process include its high deposition rate, efficient use of filler metal, elimination of slag and flux removal, and reduction of smoke and fumes. Specialist technicians with recognised training and qualifications in accordance with BS EN ISO  are required for all non-destructive testing methods. There is no universal welding power supply. The table also assigns a joint designation to each weld for each process.
Index of main articles. Butt welds are full or partial penetration welds made between bevelled or chamfered materials. The application code will specify the quality levels which must be achieved for the various joints. The positions of these butt welds are allowed for in the design , although material availability constraints or the erection scheme may require agreement of different or additional welds. All fields are required. S-1 to S Filler Material: Its function is to facilitate complete joint penetration.
Note that travel speed — the rate at which you move the gun along the joint — influences the shape and quality of a weld bead to a significant degree. Learn proper electrode angles. The CO 2 arc welding robot and its apparatus used in experiments. The travel angle is the angle of the wire as it travels along the weld path. Hopefully this page will shed some light on the subject. This can happen between the weld metal and the base metal or between passes in a multiple-pass weld. Or in the case of square edges, not as much base plate on the second side would need to be removed by back gouging before sound weld metal was reached.