Clad sheets

Details Clad sheets Clad sheets

1986-06-12

1989-05-02

Andrews, Melvyn J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Porous

148903, 148 115Q, C21D 802

Patent

active

048267368

ABSTRACT:
A clad sheet comprising a metal substrate and a metal cladding layer laminated on at least one surface of said substrate, wherein said cladding layer-laminated surface of said substrate includes a hardened layer portion formed by melting and rapid solidification through laser beam irradiation. In intermediate layer may be interposed between the substrate and the cladding layer through like hardened layer portion. Lamination is made by cold-cladding layer elements after irradiating any one of layer elements with laser beam to produce strong bonding through uniform microcrack formed in the hardened layer portion of several micrometer thick. The clad sheets are useful for making IC lead frames, for which the substrate is conductor metal and the cladding layer is solder applied to partial area of the substrate. The irradiation and cladding process is carried out continuously with a reduced draft.

REFERENCES:
patent: 2691815 (1951-01-01), Boessenkool et al.
patent: 2753623 (1951-01-01), Boessenkool et al.
patent: 3684464 (1972-08-01), Happ et al.
patent: 4122240 (1978-10-01), Banas et al.
patent: 4348263 (1982-09-01), Draper et al.

Affiliated with

Also associated with

Rating

Clad sheets does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Clad sheets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clad sheets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-584371