Method of hardening saw teeth

Details Method of hardening saw teeth Method of hardening saw teeth

1976-05-24

1977-06-21

Dean, R.

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148151, 148152, 148153, 148157, C21D 924

Patent

active

040309517

ABSTRACT:
This invention provides a method for hardening sawteeth which comprises contacting running water with the top ends of sawteeth in air, blowing flames to the top ends of the sawteeth in this state to thereby blow off the running water at parts enveloping the top ends of the sawteeth and heat only the top ends of the sawteeth at a hardening temperature, and then shifting the sawteeth to separate the heated sawteeth from a sphere of influence of the flames and simultaneously cool the sawteeth with the running water. According to this method, the top ends of respective sawteeth of a band saw can be uniformly hardened by a very simple operation without using a hardening apparatus having a complicate structure.

REFERENCES:
patent: 3923561 (1975-12-01), Ishizawa et al.

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