Castings with cast-in reinforcement

Details Castings with cast-in reinforcement Castings with cast-in reinforcement

1991-11-14

1994-04-26

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

Coating or impregnating workpiece before molding or shaping...

264235, 264265, 2642711, 264275, 2642791, 264346, B29C 4514, B29C 3910

Patent

active

053064542

ABSTRACT:
A casting is formed by inserting a metal reinforcement coil into a mold cavity and injecting a plastic casting material into the cavity such that the coil becomes embedded within the plastic casting material. Prior to being placed in the cavity, the coil is heat treated to relieve stresses therein, and a layer of plastic is sintered to the outer surface of the coil. Plastic is injected into the mold at a temperature lower than the heat-treating temperature, but hot enough to melt an outer portion of the layer and become joined therewith. An inner portion of the layer remains sintered to the coil.

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patent: 4877469 (1989-10-01), Szyms et al.
Patent Abstracts of Japan, vol. 14, No. 164, Mar. 30, 1990, JP-A 2,024,118, Sekisui Chem. Col. Ltd.
Patent Abstracts of Japan, vol. 6, No. 208, Oct. 20, 1982, JP-A 57 116 728, Koushiyuuha Netsuren.

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