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Bi-Metal Blades
1. Heat the blade slowly by jogging the annealing
switch button until the weld just beginsto emit
light (dull red color). The desired color may
not always be visible in normal room light -
always shade the weld area.
2. Cool the weld quickly by releasing the annealing
button.
3.
Follow this procedure before and after grinding
bi-metal blades.
Blade Grinding
LIS: WARNING
Keep hands away from rotating grinding wheel!
Failure to comply may cause serious injury!
Always heed the indicator light
- when glowing,
it warns that the grinder motor is running.
After annealing, the blade must be ground to
remove excess metal or flash from the weld. With
the teeth facing out, grind the weld carefully. Do not
hitthe teeth, grind deeper than the weld, burn, or
overheat the weld area. Be sure to remove flash
from the back edge of the blade. Any flash or "stub"
teeth which project beyond the normal set or height
of the other teeth must be ground off.
Secondary Annealing
Anneal the weld 2-3 times again after grinding.
Welder Clean-Up
It is important that the welder jaws be kept clean at
all times. The jaws and inserts must be wiped or
scraped clean after every weld. Doing this will
ensure betterwelds by:
1. Holding proper alignment.
2. Preventing flash from becoming embedded in
the blade.
3. Preventing shorts or poor electrical contact.
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