Process for producing hollow cast article

Details Process for producing hollow cast article Process for producing hollow cast article

1987-01-12

1987-12-15

Lin, Kuang Y.

Metal founding

Process

Shaping a forming surface

164 34, 164 35, 164 45, 164 46, 164 95, 164 98, B22C 904, B22D 1916

Patent

active

047126051

ABSTRACT:
A process for producing a hollow metal cast product having a desired interior contour is provided. The process comprises the steps of preparing a first lost model having an outer contour substantially corresponding to a desired interior contour of the finished product, depositing a metallic or ceramic material or a mixture thereof over the surface of said first lost model by spraying to form a layer defining a hollow core block, placing said hollow core block in a first mold, pouring or injecting a material for forming a second lost mold into said first mold to form a second lost model, coating a refractory material over said second lost model to form a second mold for casting, removing second lost mold to form a cavity, casting a molten metal or alloy into said cavity, and staving said second mold to take out a finished product.

REFERENCES:
patent: 3244852 (1966-04-01), Herterick et al.

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