To ensure the weld cools downs a hold time of 20 to 30 cycles is required.
How to weld a nut to sheet metal.
Tig welding sheet metal.
It on my key board hear to which i will apply 2 small mig welds 180 degrees apart.
The most common thing that happens to me is that i overheat the nut and then the threads have melted just enough where you can t get the bolt in easily.
Forget the larger 1 8 inch tungsten electrode and use a smaller one.
Here is a simple method for determining the right mix of parameters for weld nut resistance welding.
Today we show the verycoolgang 3 different ways to attach two pieces of m.
Sometimes it is wise to use washers as well to avoid damaging the metals.
Don t attempt to weld thin materials like sheet metal with flux cored wires which put more heat into the base metal.
That will a help keep the nut from twisting up on one side and b act as a heat sink for the small threads on the inside of the nut.
Nut welding using marc 1 nut welding system.
Once you have the holes you just stick the bolt through the hole and screw on the nut on the other end.
Like with riveting you just need two pieces of metal with proper size holes in it.
If you ve ever tried to tap an m6 thread into a 1 5mm sheet metal part in real life you will find that the threads strip very easily due to the fact that you will not even get 2 full threads in the material.
Sand the area to be joined with fine sandpaper steel wool or emery paper to remove any surface oxidation or corrosion.
Having said all of that for a small qty you could just bolt them in place.
You can start by applying pressure in the upper range.
It can be accomplished with a regular drill.
To weld sheet metal with solid wires use electrode positive ep or reverse polarity.
Run a bolt through it and tighten it down lightly.
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Make sure to use low heat and relatively short weld cycle times.
Wipe away the dust.