Process for creation of metallurgically bonded inserts cast-in-p

Metal founding – Process – Shaping liquid metal against a forming surface

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164102, 164103, 164108, B22D 1908

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active

053336682

ABSTRACT:
Processes for coating a ferrous or aluminum article, such as an engine cylinder liner insert, to provide a metallurgical bond with aluminum alloy material cast around the article. The article surface to be bonded is treated to remove impurities, oxides, and foreign materials, and the article is preheated. A molten metallic bonding material, such as zinc or a zinc alloy, is provided and the treated and preheated article is immersed in the bonding material to provide a metallurgically bonded coating on the surface of the article being treated. The coated article, either shortly after coating or, alternatively, after having been cooled to ambient temperature and stored, can then be placed in a mold and molten aluminum alloy poured around it to metallurgically bond the aluminum to the coating on the article. The resulting structure provides a metallurgical bond that has improved heat transfer characteristics and improved structural integrity. The invention also provides improved assemblies having metallurgically bonded components, such as an engine block having metallurgically bonded cylinder liners.

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Metals Handbook, vol. 2, 8th Edition, pp. 498-501, 1964.

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