MC-588195-23
Spot welding:
There are three methods of spot welding:
1. Burn-through method: In this method,
two overlapped metal pieces are welded
together by burning through the top
piece and into the bottom piece. The
wire suitable for this method is 0.035"
(0.9 mm) self-shielding, flux-core wire.
Always select the high heat setting for
this method and tune in the wire speed
prior to making a spot weld (fig. S).
2. Punch and fill method: This method
produces a weld with the most finished
appearance. In this method, a hole is
punched or drilled into the top piece of
metal and the arc is directed through the
hole to penetrate into the bottom piece.
The puddle is allowed to fill up the hole
leaving a spot weld that is smooth and
flush with the surface of the top piece
(fig. T).
3. Lap spot method: The welding arc is
directed to penetrate the bottom and top
pieces at the same time, and along each
side of the lap joint seam. Select the
wire diameter, heat setting, and tune-in
the wire speed in such a way suitable
for welding the material with a
continuous bead (fig. U).
1. Select the wire diameter and heat setting recommended above for the intended method of
spot welding.
2. Tune-in the wire speed as if a continuous weld is to be performed.
3. Hold the nozzle piece completely perpendicular to and about 1/4" (6 mm) off the workpiece.
4. Pull the trigger on the torch and release it when the desired penetration is achieved.
5. Make practice spot welds on scrap metal and vary the duration of time of holding the trigger
until a desired spot weld is made.
6. Make spot welds on the actual workpiece at desired locations.
Instructions to be followed for the spot welding methods:
model no. 058-1294-8 | contact us 1-800-689-9928model no. 058-1294-8 | contact us 1-800-689-9928model no. 058-1294-8 | contact us 1-800-689-9928
model no. 058-8195-2 | contact us 1-800-689-9928
WARNING!
Note: Do not use 0.030" (0.8 mm) self-shielding flux-core wire when using this method unless the
metal is very thin or excessive filler metal.
To Next Page
Loading...
Need help?
General
