Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1980-11-03
1982-10-26
Hampilos, Gus T.
Metal founding
Process
Shaping liquid metal against a forming surface
164488, 164421, 164439, B22D 1110, B22D 1100
Patent
active
043556809
ABSTRACT:
A method and apparatus (10) for the continuous casting of hollow articles (12) provides for the removal of liquid metal (49) from a mold (20) concurrently with the withdrawal of the solidified article (12). Undesirable reaction products, such as oxides, sulfides, and ceramic compositions, are commonly included in cast articles, reducing the mechanical and physical properties of the article and producing a product of inferior quality. The problem is solved by continuously casting molten metal (16) in a vertically oriented mold (20) and draining the contaminate enriched liquid (49) from an upper end (24) of the mold (20), thereby washing undesirable impurities from the freezing zone resulting in a clean, dense hollow article (12) having superior properties. Seamless mechanical tubing suitable for oil field and hydraulic cylinder applications can be produced by this process.
REFERENCES:
patent: 3863706 (1975-02-01), Chandley et al.
patent: 3872913 (1975-03-01), Lohikoski
patent: 4146079 (1979-03-01), Anisovich et al.
patent: 4185684 (1980-01-01), Zabara et al.
Hale H. Hursen, "Pressure Casting of Steel", Metal Progress, Apr. 1963, pp. 67-71.
Caterpillar Tractor Co.
Hampilos Gus T.
Lin K. Y.
McFall Robert A.
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