Method of making clad materials using lead alloys and composite

Details Method of making clad materials using lead alloys and composite Method of making clad materials using lead alloys and composite

1998-08-31

2000-08-01

Wyszomierski, George

Metal treatment

Process of modifying or maintaining internal physical...

Producing or treating layered, bonded, welded, or...

148530, 148535, 148536, 148706, 2282352, B23K 3100, B23K 3102, B23K 3112

Patent

active

060961457

ABSTRACT:
Lead alloy strip material (4, 6, 8) is roll bonded on one or both opposite face surfaces of a core strip material (2). The core material can be commercially pure titanium, austenitic stainless steel, low carbon steel, copper, aluminum, alloys thereof or other suitable metal that has sufficient ductility and that can provide desired attributes of stiffness and corrosion resistance to the composite. The lead alloy material is strengthened by the addition of less than approximately 1% of calcium or antimony and the core material is softened by fully annealing it prior to bonding. The several strips are reduced in thickness, preferably in approximately the same proportion, by at least 40% in the bonding pass to create a solid phase bond among the strips. The bonded composite is then rolled to final gauge and, for selected applications, is corrugated and cut to form panels (20, 22, 24) and etched to form pockets (8b) for pasting of active materials such as lead oxide for battery plates.

REFERENCES:
patent: 3882648 (1975-05-01), Buchinski et al.
patent: 4467954 (1984-08-01), Brenneman
patent: 4753688 (1988-06-01), Myers
patent: 4939051 (1990-07-01), Yasuda et al.
patent: 5339873 (1994-08-01), Feldstein
Published paper in Sheet Metal Industries in Jan. 1974 by G. Pickard and P.F. Rimmer.
Published paper in Journal of the Institute of Metals (1970, vol. 98) by J.E. Bowers and C.J. Goodwin.

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