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Mig settings when material thickness doesn't match?

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发表于 2021-9-1 00:01:57 | 显示全部楼层 |阅读模式
Hi guys,If welding a T joint where one piece is 1/8" thick, and the other is 1/4", what MIG settings would you refer to from the manufacturer's charts? Would you select the settings they recommend for the 1/8" material, or the 1/4", or something in between?
Reply:You always must provide enough heat to weld the thickest part.  Thus, start with the setting for 1/4".  Bring your puddle to the 1/8" material.
Reply:Originally Posted by tapwelderYou always must provide enough heat to weld the thickest part.  Thus, start with the setting for 1/4".  Bring your puddle to the 1/8" material.
Reply:You only need the correct setting to make a stronger weld than the 1/8" material. If you need a weld that is stronger than the 1/4" then the part has been engineered poorly. --Gol'
Reply:I out of habit always start with my wire pointing at the center of the joint.How is your joint designed.  Are you welding the edge of the 1/8 or 1/4 part or are both edges coming together.  Edges usually take less heat. Depending on orientation 1/8 setting might work.While the 1/8" part is the weak link.  I don't think you get a minimally strong weld without enough heat to weld the largest part.  Try welding 1/16 to 1/4 on the setting for 1/16.Just control the puddle.  1/8 to 1/4 won't be difficult.
Reply:My machines didn't come with charts, but for that particular description I would be running about 180 -200 amps. Keep your heat in the heavy side and just let the puddle flow into the 1/8th. You may not be able to run that hot.The difference between art and craft is the quality of the workmanship. I am an artist.
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