HIGH-SPEED WELDING
The principle of high-speed welding incorporates the
basic methods utilized in hand welding with specially
designed and patented tools. Here too, the requirements
for constant heat and pressure must be fulfilled. The
accelerated rate of speed in high-speed welding is
possible because both the rod and the base material are
preheated before they reach the fusion point. A round
or triangular rod is preheated in a tube, while the base
material is preheated by the hot air stream from a vent
in the underside of the welding tip.
The necessary pressure is no longer provided by holding
the rod in the hand. Instead, a shoe on the end of the
tool furnishes the necessary pressure and, at the same
time, smooths out the rod for uniform appearance and
higher tensile strength. Gentle pressure on the rod
results in better control of the weld.
The conventional hand welding method now becomes a
faster and more uniform operation. Once started, the rod is
fed automatically into the preheating tube by the motion of
the welder being pulled along the joint. The Kamweld high-
speed tools automatically give constant balance of heat and
pressure.
Welding Positions:
1.
Start of Weld
2.
Actual Welding
3.
End of Weld
Figure 5. High-Speed Welding with round or
triangular rod.
1. Select and install the proper size high-speed tip for the ap-
propriate size welding rod. Allow for warm-up time.
2. Grasp the welder firmly and hold it in an upright posi-
tion, with the point of the high-speed tip approximately
½” above base material, directly over the starting point of
the weld. Insert the rod into the welding tube and hold it
there until the base
material turns shiny and starts to soften.
3. Push the rod down until it sticks to the base material.
4. Continue exerting downward pressure on the rod, which
will then bend and lower the shoe to the rod. The shoe of
the tip will rest on top of the exposed part of the rod (see
Figure 5, illustration 1).
1
2
3
Welding Positions:
1.
Start of Weld
2.
Actual Welding
3.
End of Weld
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