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November 19, 2014
Q: I’m building a horse trailer and I need to join some aluminum parts to the steel frame. Can I use arc welding to do this? A: Surprisingly, yours is a very common question that I feel should be addressed. While solid-state joining processes like friction stud welding and flash butt welding can...
June 18, 2014
Q: We are welding several fabricated parts made from A514 (T1) steel using an AWS A5.29, 3/32-in-dia. E110 FCAW electrode. On one particular part we are experiencing longitudinal weld cracking. The structure is a 4-in. plate with a square cut out of the center and a 1.5-in. plate welded back in its...
April 30, 2014
Q: I'm working with a company whose welders are certified on A36 plate with 0.045 solid wire. They have taken the test in a vertical-down progression using GMAW in globular transfer mode. They took it on 1-in. plate, single V-groove with backing. The company they want to do work for wants them...
November 14, 2012
For a project involving structural columns made of 4-in. plate, Owen Steel Co. Inc., Columbia, S.C., had two choices when it came to cutting difficult transition bevels. First, it could use a manually guided track torch system and bevel one side of the plate at a time, which would open the door to distortion. Or second, it could find a mechanized cutting system that would allow both sides of the plate to be beveled simultaneously.
November 5, 2012
Shielding gases do more than just protect the weld from atmospheric contamination. The gas and gas blends you use also influence the weld profile and the weld bead shape. Also, for an arc to occur in gas metal arc welding (GMAW), an ionized gas must be present to carry the charge.