Amada UB25, Руководство по эксплуатации

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APPENDIX C: THE BASICS OF RESISTANCE WELDING
UB25 LINEAR DC RESISTANCE WELDING CONTROL
C-4 990-665
MATERIAL
ELECT
RWMA
TYPE
MATERIAL
ELECT
RWMA
TYPE
NiSpan C -2 Stainless Steel -2
Niobium -2 Niobium -2
Platinum -2 Platinum -2
Paliney 7 -2 Paliney 7 -2
Silver -11, -14 Silver -11, -14
Silver -11, -14 Cadmium -13
Silver -11, -14 Cold Rolled Steel -2
Silver -11, -14 Stainless Steel -2
Cold Rolled Steel -2 Cold Rolled Steel -2
MATERIAL
ELECT
RWMA
TYPE
MATERIAL
ELECT
RWMA
TYPE
Cold Rolled Steel -2 Stainless Steel -2
Cold Rolled Steel -2 Tantalum -2
Stainless Steel -2 Stainless Steel -2
Stainless Steel -2 Tungsten -2
Tantalum -2 Tantalum -2
Titanium -2 Titanium -2
Tungsten -2 Tungsten -2
Tungsten -2 Henium -2
Zinc -14 Zinc -14
Electrode Maintenance
Depending on use, periodic tip resurfacing is required to remove oxides and welding debris from
electrodes. Cleaning of electrodes on production line should be limited to use of # 400-600 grit electrode
polishing disks. For less critical applications, a file can be used to clean a badly damaged tip. However,
after filing, polishing disks should then be used to ensure that the electrode faces are smooth. If this is not
done, the rough surface of the electrode face will have a tendency to stick to the work piece.
Weld Schedule Development
Developing a weld schedule is a methodical procedure, which consists of making sample welds and
evaluating the results. The first weld should be made at low energy settings. Adjustments are then made
to each of the welding parameters
one at a time until a successful weld is made.
1 Install the correct electrodes in the electrode holders on the Weld Head. See the preceding Table
for electrode material recommendations.
2 Use a flat electrode face for most applications. Use a "domed" face if surface oxides are a
problem. If either of the parts is a wire, the diameter of the electrode face should be equal to or
greater than the diameter of the wire. If both parts are flat, the face should be at least one-half
the diameter of the electrodes. Pencil point electrodes cause severe electrode sticking to the parts,
unexplained explosions, and increase the weld heat substantially because of the reduced
electrode-to-part contact area.
3 Use the Force Adjustment Knob on the Weld Head to set the Firing Force and adjust an Air
Actuated Weld Head
.