Process for the continuous hardening of pump casings

Details Process for the continuous hardening of pump casings Process for the continuous hardening of pump casings

1978-06-12

1981-03-24

Rutledge, L. Dewayne

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148146, 148151, 148152, C21D 108, C21D 908

Patent

active

042578310

ABSTRACT:
The invention relates to an economic process and apparatus for the continuous hardening of pump casings by means of flame hardening, with or without modifications to the core characteristics. As a result the life of the thus treated pump casing is considerably increased, even if it is exposed to a high degree of wear. This is achieved in that the horizontally positioned pump casing is moved past the flame hardening apparatus about a vertical axis and is simultaneously moved out of the horizontal position in such a way that the cooling water is removed over the already hardened inner wall surface.

REFERENCES:
patent: 2318145 (1943-05-01), Emery et al.
patent: 3385583 (1968-05-01), Jablonski
patent: 3887328 (1975-06-01), Maddock
patent: 4030711 (1977-06-01), Siller

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