Are you planning to do weld auto body sheet metal or any thin metal welding with mig welder or tig welder you should keep in mind some critical things to avoid creating any unwanted situations and we have decided to incorporate them in right here.
How to tig weld thin sheet metal.
Technique for thin metal the way around this is to weld in short pulses allowing a second or less between pulses for the steel to cool down.
For instance when producing a 3 ft.
With back stepping the welder breaks up the seam in sections.
Cut out the rust the first thing you ll need to do is cut out the rust from the body panel.
These days i ll normally leave less than half a second.
On larger thin gauge material spread out several smaller welds over the joint.
Auto body sheet metal welding with different welders.
This means that 1 amp should be used per 1 thousandth 0 001 inch of thickness.
Don t attempt to weld thin materials like sheet metal with flux cored wires which put more heat into the base metal.
Sheet metal tig welding tips 1 for 1 rule.
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The best way to estimate the heat input needed for welding is by applying the 1 for 1 rule.
A plasma cutter is my favorite tool for cutting metal.
The standard practice when tig welding involves pushing the weld puddle in one continuous direction for the entire length of the weld.
And then stop to allow the weld to cool down before restarting again.
To weld sheet metal with solid wires use electrode positive ep or reverse polarity.
In the video i ve left about a second between pulses.
This is especially useful for carbon steel.
Welding in a sequence that limits the amount of heat can help minimize distortion in thin material.
Weld in the vertical down position weld 6 in.