Method and apparatus for producing iron article and product

Details Method and apparatus for producing iron article and product Method and apparatus for producing iron article and product

2005-07-05

2005-07-05

Koehler, Robert R. (Department: 1775)

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

C428S686000, C428S687000, C428S908800, C428S926000, C428S937000, C118S715000, C118S726000, C118S300000, C222S590000, C222S591000, C222S593000, C222S603000, C222S566000, C427S250000, C427S255230, C427S422000, C427S426000, C427S427100

Reexamination Certificate

active

06913841

ABSTRACT:
Liquid aluminum is sprayed onto an iron article to produce a thin tenacious non-corrodible layer. In one embodiment, an iron article is heated to at least 400° F. or preferably until cherry red. It is sprayed with a fine aluminum mist generated by heating aluminum in a container and then passing a gas under pressure through the container and out through a heat resistant ceramic nozzle. In another embodiment, aluminum is heated to at least 2000° F. in a container to produce a pool of liquid aluminum. Pressure is applied to the container to project the liquid aluminum in the form of a fine mist through a ceramic nozzle onto the iron article. The aluminum mist produces a tenacious aluminum layer on the iron article that is workable, weldable and non-corrodible. The aluminum layer is a permanent part of the iron article and cannot be removed by conventional means, such as buffing with a wire wheel driven by a electric motor.

REFERENCES:
patent: 1165338 (1915-12-01), Moench
patent: 3400010 (1968-09-01), Keating
patent: 3954512 (1976-05-01), Kanter
patent: 3959030 (1976-05-01), Satake et al.
patent: 4036670 (1977-07-01), De Walt
patent: 4202709 (1980-05-01), Shibamori et al.
patent: 4546051 (1985-10-01), Uchida et al.
patent: 4655852 (1987-04-01), Rallis
patent: 5960835 (1999-10-01), Izaki et al.

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