Volume of Material Required to Avoid Burn Through (Welding)
Volume of Material Required to Avoid Burn Through (Welding)
(OP)
Hi,
Is there a formula or rule of thumb that I can use for MIG welding to determing the minimum amount of material required to weld, to avoid burn through?
For example, I want to weld a T-joint. The material thickness is 2mm and the height of the tab to be welded to the base is 6mm. The weld has a 3mm throat and is 10mm long. Will it burn through? What height do I need to have to avoid burn through?
| } 6mm tall
| }
--------
Thanks,
Jeff
Is there a formula or rule of thumb that I can use for MIG welding to determing the minimum amount of material required to weld, to avoid burn through?
For example, I want to weld a T-joint. The material thickness is 2mm and the height of the tab to be welded to the base is 6mm. The weld has a 3mm throat and is 10mm long. Will it burn through? What height do I need to have to avoid burn through?
| } 6mm tall
| }
--------
Thanks,
Jeff





RE: Volume of Material Required to Avoid Burn Through (Welding)
The problem is not with the height of the tab, it is a question of heat input. Welder technique is essential with this thickness of material. Adjust the heat input to a lower amperage and you should get the results that you are looking for. Hope this helps
RE: Volume of Material Required to Avoid Burn Through (Welding)
My problem is that I am designing for robotic welding of an assembly and I am being told by the process engineer that I need a certain height. I was thinking that if I need to change the thickness then I could have a shorter height (if I maintain the same volume - 'heat sink'- for a given heat input). There are many other welds in the area and they probably want to use the same input for all of the welds so they don't lose time in the process by stepping down.
Thanks,
Jeff
RE: Volume of Material Required to Avoid Burn Through (Welding)
Beware of lack of fusion with this welding process; do a test piece and put it in a vice and destroy it with a hammer.
John www.gowelding.com
RE: Volume of Material Required to Avoid Burn Through (Welding)