Migomag SIM 200 LCD - Page 29

Migomag SIM 200 LCD
Model No ASIM200LCD
26
1. The BURN-THROUGH METHOD welds two overlapped pieces of metal together by
burning through the top piece and into the boom piece. With the burn-through method,
larger wire diameters tend to work beer than smaller diameters. Wire diameters that
tend to work best, with the burn-through method are 0.035 inch self-shielding ux-core
wire. Do not use .030 inch self-shielding ux core wires when using the burn-through
method unless the metal is VERY thin or excessive ller metal build-up and minimal
penetraon is acceptable. Always select the HIGH heat seng with the burn-through
method and tune in the wire speed prior to making a spot weld.
2. The PUNCH AND FILL METHOD produces a weld with the most nished appearance
of the three spot weld methods. 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 boom
piece. The puddle is allowed to ll up the hole leaving a spot weld that is smooth and
ush with the surface of the top piece. Select the wire diameter, heat seng, and tune
in the wire speed as if you were welding the same thickness material with a connuous
bead.
3. The LAP SPOT METHOD directs the welding arc to penetrate the boom and top pieces,
at the same me, right along each side of the lap joint seam. Select the wire diameter,
heat seng, and tune in the wire speed as if you were welding the same thickness
material with a connuous bead.
7. Electrode
The welding electrode is a rod coated with a layer of ux. When welding, electrical
current ows between the electrode (rod) and the grounded metal work piece. The
intense heat of the arc between the rod and the grounded metal melts the electrode and
the ux. The most popular electrodes are:
• Kobe -6010 E6010 tensile strength deep penetrang applicaons.
• Kobe RB-26 E6013 tensile strength used for poor t up applicaons
• Kobe LB-52U E7016 tensile strength used for high deposion and fast travel speeds
with light penetraon
• Kobe LB-52-18 E7018 70,000 PSI tensile strength, Used for out of posion and tacking.
Used for out of posion and tacking.
8. Selecng the Proper Electrode
There is no golden rule that determines the exact rod or heat seng required for every
situaon. The type and thickness of metal and the posion of the work piece determine
the electrode type and the amount of heat needed in the welding process. Heavier and
thicker metals required more amperage. It is best to pracce your welds on scrap metal
which matches the metal you intend to work with to determine correct heat seng and
electrode choice. See following some helpful trouble shoong ps to determine if you are
using a correct electrode.