Blade fabricating process

Details Blade fabricating process Blade fabricating process

1979-05-14

1982-03-23

Dean, R.

Metal treatment

Compositions

Heat treating

148150, C21D 714

Patent

active

043210970

ABSTRACT:
A process and apparatus for cleanly and efficiently fabricating winged lawn mower blades from unfinished milled blade blanks. The unfinished blades are positioned in a magazine and fed one after the other to a heating station where they are inductively heated from one side only to increase the effective thickness of material available to support the flux. When a preselected temperature above the curie temperature of the blade metal is reached the blade is automatically moved to a press and hot-formed therein. The blade then is delivered edgewise into an agitated non-polluting quench solution containing polyalkylene glycol and vigorously sprayed to assure a consistent Rockwell C hardness. A conveyor delivers the blades from the quench tank to a tempering furnace for further heat-treatment.

REFERENCES:
patent: 2902572 (1959-09-01), Lackner et al.
patent: 3378412 (1968-04-01), Mansfield et al.
patent: 3616807 (1971-11-01), Collins et al.
patent: 3756870 (1973-09-01), Kasper et al.
patent: 4090698 (1978-05-01), Mucha et al.
patent: 4122321 (1978-10-01), Cachat

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