10.After the welding operation is complete, rotate the lock levers down to release the welding clamps, then rotate the clamping pressure dial to "0".
11.Inspect the weld. The welded joint should be even across the width of the blade with no gaps (see Figure 32).
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Figure 32. Blade welded joint examples.
—If the weld is satisfactory, continue to Step 12.
—If the weld is NOT satisfactory, begin again at Step 2.
12.Set the clamping pressure dial to 4 or greater to bring the welding clamps close together.
13.Place the blade in the welding clamps with the weld centered between the clamps and re-tighten the lock levers.
Note: The welding operation has left the blade joint brittle. Annealing will allow the material to cool in gradual manner, giving the weld strength and flexibility.
14.Rapidly press and release—DO NOT hold— the annealing button two or three times until the weld zone turns dull red.
15.Repeat Step 14 three to four more times, allowing the weld to cool for about 30 sec- onds between each repetition.
16.Allow the blade to fully cool, then re-inspect the weld.
17.Grind away the weld flash on either side of the joint and the back of the blade until the weld is flat and the blade will run smoothly on the wheels.
Note: Make sure not to grind the teeth or blade body, or overheat the blade during
18.Re-clamp the blade in the welding clamps with the joint centered, then repeat Step 14 twice more.
19.Test the strength and flexibility of the weld by bending the blade in an arc similar to that of the bandsaw wheels. The blade should bend smoothly without any angles (see Figure 33).
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Figure 33. Correct blade weld bend for strength
and flexibility.
NOTICE
For good