1950-01-01

INDUCTION-HARDENED GEARS 500170

INDUCTION heating, the authors show, has been successfully applied to the hardening of many types of gears. Over a million transmission gears have been produced with its aid and thousands of induction-hardened final-drive gears and pinions are giving satisfactory field service.
It has resulted in lower costs (due to the substitution of carbon for alloy steel, fewer machining operations, and lower heat-treating costs) and improved quality (due to a lack of distortion and better stress distribution).
The first part of this paper, by Mr. Kincaid, covers the equipment and methods used in handling various gear jobs. Then Mr. Knowlton covers the engineering tests and service performance of various types of induction-hardened gears.

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