Method of producing open-celled metal structures

Details Method of producing open-celled metal structures Method of producing open-celled metal structures

1990-05-14

1991-08-27

Batten, Jr., J. Reed

Metal founding

Process

Shaping a forming surface

164 45, 264221, B22C 300, B22C 702, B22D 2300, B22D 2500

Patent

active

050425609

ABSTRACT:
A lost positive pattern comprising an open-pored plastics substrate containing pores with an average width of from one to three millimeters is used, in which, after a negative pattern has been made, the voids which it, as a core, contains are filled with metal by casting and the negative pattern is removed. The production of the negative pattern is preceded by the following method steps in which once the substrate of plastics material has been cleaned, it is wetted throughout with a keying resin film which partially dissolves the structure of its surface and in which at least one coat of an auto-crosslinking two-pack silicone is applied onto and into the whole of the substrate of plastics material to thicken the walls and/or the interlinking webs of the porous substrate of plastics material.

REFERENCES:
patent: 3845181 (1974-10-01), Ravault
patent: 3899556 (1975-08-01), Heide et al.
patent: 3946039 (1976-03-01), Walz
patent: 4600546 (1986-07-01), Grundei
patent: 4781721 (1988-11-01), Grundei
patent: 4812278 (1989-03-01), Natori et al.

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