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

1987-04-27

1988-04-19

Albritton, C. L.

Electric heating

Metal heating

By arc

219121LR, B23K 2600

Patent

active

047391480

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: 3941973 (1976-03-01), Luck, Jr. et al.
patent: 4304978 (1981-12-01), Saunders
patent: 4475027 (1984-10-01), Pressley

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