Method of manufacturing multilayer material for plain bearing

Details Method of manufacturing multilayer material for plain bearing Method of manufacturing multilayer material for plain bearing

2006-06-27

2006-06-27

Wyszomierski, George (Department: 1742)

Metal treatment

Process of modifying or maintaining internal physical...

Treating loose metal powder, particle or flake

C148S525000, C075S336000, C419S008000

Reexamination Certificate

active

07067021

ABSTRACT:
A method of manufacturing a multilayer material including a back metal and a metal plate made from a metal differing from the back metal is disclosed. The method includes heating powder of the metal formed into the metal plate in a reducing atmosphere so that an oxide on a surface of the metal powder is deoxidized, and spreading the deoxidized metal powder onto the back metal and irradiating laser beam having an energy density of 10 to 100 kW/cm2onto the metal powder spread on the back metal so that the metal powder is partially heated to be melted, while the laser beam is moved relative to the spread metal powder, and quenching the melted part of the metal powder at an underside of the back metal so that the melted part is rapidly solidified, whereupon the multilayer material has a dendritic structure in which the metal plate extends substantially vertically from a surface of the back metal, and the dendritic structure has a crystal grain size equal to or smaller than 0.02 mm at a cut surface thereof parallel to a surface of the back metal and/or a dendritic arm spacing equal to or smaller than 0.02 mm at a cut surface thereof vertical to the surface of the back metal.

REFERENCES:
patent: 4758404 (1988-07-01), Muto
patent: 5837960 (1998-11-01), Lewis et al.
patent: 6843866 (2005-01-01), Brenner et al.

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