Apparatus for improving surface quality of rotary machine parts

Details Apparatus for improving surface quality of rotary machine parts Apparatus for improving surface quality of rotary machine parts

1985-06-21

1987-08-11

Albritton, C. L.

Electric heating

Metal heating

By arc

219121LE, 219121LA, 219121LP, B23K 2600

Patent

active

046863494

ABSTRACT:
An apparatus for improving the surface quality of a rotary machine part in which a high density beam such as laser beam or electron beam is condensed with collimation to a parallelepiped spatial intensity distribution, the intensity being controllable. The beam is directed to a predetermined surface area of the rotary machine part rotating at a constant angular velocity. A solidified layer formed by rapid solidification of a surface portion of the rotary machine part, which is melted by irradiation by the condensed beam, and a transformation-hardened layer formed below the solidified layer are uniform in thickness, and the transformation-hardened layer is uniformly formed throughout the periphery of the rotary machine part, and thus no cracking and/or pitting occurs.

REFERENCES:
patent: 3118050 (1964-01-01), Hetherington
patent: 3472998 (1969-10-01), Popick et al.
patent: 3541973 (1976-03-01), Luck, Jr. et al.
patent: 3597579 (1971-08-01), Lumley
patent: 3663795 (1972-05-01), Myer
patent: 4250372 (1981-02-01), Tani
M. A. Grimm, IBM Technical Disclosure Bulletin, "Optical System for Laser Machining of Narrow Slots", vol. 14, No. 9, pp. 2641, 2642, Feb. 1972.
R. N. Anisimova, et al., A Version of the Projection Method for Laser Machining of Thin Films", Instrum. & Exp. Tech., vol. 19, No. 1, pp. 277-278 Pub 8/1976.

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