Flash welders

Details Flash welders Flash welders

1980-10-22

1982-03-23

Shaw, C. C.

Electric heating

Metal heating

For bonding with pressure

219 97, 219101, 219104, B23K 1104

Patent

active

043214525

ABSTRACT:
Method and apparatus for detecting whether or not the gap in adjoining ends of a ring-like workpiece to be flash welded is of normal size, or is so much larger as to produce an unsatisfactory weld. The invention provides means whereby the amount the movable platen of a flash welder moves in a direction toward the stationary platen is compared with its position when the ends abut and flashing begins. If the ends are not materially beyond a predetermined normal gap, the welding action proceeds; however, if the ends are spaced beyond such normal gap, further action of the flash welding process is aborted, or a signal is activated; or both abortion and signal are provided. The invention is especially adapted for use in welding rings which are formed and welded in high production, such as rings that are further processed to make rims for tires of a vehicle.

REFERENCES:
patent: 2443965 (1948-06-01), Seeloff
patent: 3542994 (1970-11-01), Deffenbaugh et al.
patent: 3980857 (1976-09-01), Sclaky

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