Phenolic resin adhesive pastes, assemblies prepared therefrom, a

Details Phenolic resin adhesive pastes, assemblies prepared therefrom, a Phenolic resin adhesive pastes, assemblies prepared therefrom, a

1988-02-24

1989-09-05

Seidel, Richard K.

Metal founding

Process

Shaping a forming surface

164137, 164520, 164349, 164364, 523145, 523147, 524596, 525480, 525508, B22C 122

Patent

active

048629480

ABSTRACT:
An adhesive paste for adhering two or more objects, a composite assembly comprising two or more elements bonded by such paste, and a process for preparing cast metal articles using such paste are provided. The adhesive paste comprises an aqueous solution of a specific alkali phenol-formaldehyde resin and a hardener for that resin, wherein the paste prepared by mixing the resin and hardener has a viscosity, as mixed, in the range of about 1,000 cps to about 15,000 cps. The composite assembly comprises at least two separate elements bonded by the adhesive paste of the invention. The process uses a mold or core assembly having at least two separate elements. The elements are bonded by applying a coating of the paste of the invention to a surface which is to be bonded to a surface of a different element; placing the surfaces in confronting, engaging relationship and allowing an adhesive bond to form; introducing molten metal into the mold assembly or around the core assembly; allowing the molten metal to harden; and removing the bonded mold or core assembly.

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