Method and apparatus for induction heating gears and similar wor

Details Method and apparatus for induction heating gears and similar wor Method and apparatus for induction heating gears and similar wor

1987-01-08

1988-07-12

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1059, 219 1071, 266125, 266129, 148147, H05B 614

Patent

active

047571705

ABSTRACT:
A method and apparatus for progressively hardening an elongated workpiece having an outer generally cylindrical surface concentric with the central axis including the concept of providing closely spaced first and second induction heating coils each having workpiece receiving openings generally concentric with the axis of the workpiece; energizing the first coil with a low frequency such as a frequency less than about 50 KHz; energizing the second coil with a high radio frequency, such as the frequency exceeding 100 KHz; causing relatively axial and progessive motion between the workpiece and the first and second closely spaced coils in a direction entering the first coil and exiting the second coil whereby the cylindrical surface is progressively first preheated by the first coil and then immediately final heated by the second coil; and, then immediately quenching the cylindrical surface as it passes from the second coil whereby the cylindrical surface is progressively preheated, heated and quench hardened as the workpiece is moved through the induction heating coil.

REFERENCES:
patent: 2167798 (1939-08-01), Denneen et al.
patent: 2444259 (1948-06-01), Jordan
patent: 2590546 (1952-03-01), Kincaid et al.
patent: 2689900 (1954-09-01), Redmond et al.
patent: 3446495 (1969-05-01), Pfaffman et al.
patent: 3502312 (1970-03-01), Douglass
patent: 4251704 (1981-02-01), Masie et al.
patent: 4363946 (1982-12-01), Busemann
patent: 4675488 (1987-06-01), Mucha et al.

Affiliated with

Also associated with

Rating

Method and apparatus for induction heating gears and similar wor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for induction heating gears and similar wor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for induction heating gears and similar wor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-665380