What are plug welds used for?

Plug welds are circular welds used to fasten two surfaces together through a small hole in one of the surfaces. In automotive applications, plug welds are commonly used in place of spot welds when there is insufficient space to accommodate spot welding equipment. The resulting weld is often stronger than a spot weld.

Is plug welding strong?

A Plug Weld, also known as the Rosette Weld, is when two metals are fused through welds placed in small circular holes. Plus, if done properly the plug weld can end up being stronger than a spot weld.

What does a plug weld look like?

Plug welds are a round weld that is made inside of an existing hole most commonly in one piece of metal, welding that piece to another member. The plug weld symbol is a rectangle with a diameter symbol placed to the left of the symbol as well as the number associated with that diameter.

How big should a plug weld be?

regards. The minimum diameter of the hole for the plug shall be no less than the thickness of the part containing it plus 5/16(8mm) preferably rounded to the next greater odd 1/16″. The maximum width shall equal the minimum width plus 1/8″(3mm) or 2-1/4 times the thickness of the member,which ever is greater.

What size hole do you drill for a plug weld?

I do 5/16 or 3/8 inch holes. I find it is easier for me to get a good weld using the larger holes. I tried ¼ inch and found that the hole would fill and make a good looking patch but sometimes I wouldn’t get good penetration into the lower sheet of steel resulting in failure.

How far apart should plug welds be?

The minimum center to center spacing for plug welds shall be 4 times the diameter of the hole. The minimum center to center of slot welds (traverse direction (this way II) shall be 4 times the width of the slot. Longitudinal direction (–) shall be 2 times the length of the slot.

What is Edge weld?

A weld applied in a preformed opening or groove between two metal parts. Groove welds defined in the Edge Weld PropertyManager can represent all edge-to-edge weld types (square butt, V, J, & U conditions).

Why am I blowing holes in my welds?

A long arc length means the wire isn’t under as much tension, so it takes less welding current to make it blow. A shorter wire sticking out of your contact tip by being closer to the workpiece means that it now takes a little more current to make it blow.