Methods of making a chain saw guide bar with high wear resistanc

Details Methods of making a chain saw guide bar with high wear resistanc Methods of making a chain saw guide bar with high wear resistanc

1998-12-07

2000-04-25

Ryan, Patrick

Electric heating

Metal heating

By arc

21912163, 21912161, 2191216, 21912168, 21912167, 21912169, 76112, B23D 6300

Patent

active

060546719

ABSTRACT:
To increase the wear resistance of the nose of a chain saw guide bar, a U-shaped strip of wear-resistant alloy is welded to the edge surface of each side rail of the guide bar at the nose. Each strip has a greater width at the crest of the strip than at the ends thereof. The strips are formed by making identical curved cuts through a plate formed of the alloy, whereby each cut forms a wave-shaped element comprising at least two U-shaped strips that are joined end-to-end. The individual strips of the element are severed from one another before being welded to the respective side rails. The strips could be formed of cobalt-chrome-tungsten alloy, and thermally age-hardened, prior to being welded onto the side rail.

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