Title: Method for the manufacture of a compound casting

Abstract: A composite casting is produced by electrodepositing a wear resistance material onto a core, immersing the core in an aluminium melt and then casting an aluminium alloy around the core, before detaching the latter. The wear resistant layer may be given a roughened surface before immersing in the aluminium melt, by increasing the current density in the later stages of the depositing. The method may be used for casting light metal cylinders for internal combustion engines.

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Inventors: Hannig, Christoph (Stuttgart, DT)

Application Number: 503134
Filing Date: 1974-09-04
Publication_date: 1976-03-23
Assignee: Mahle GmbH (Stuttgart, DT)
Primary Class(es): 164/75 164/91, 164/94, 164/98, 164/100, 164/111
Other Classes:
US Patent Ref:

2453772	Nov, 1948	Whitfield et al.	164/75.
2544671	Mar, 1951	Grange et al.	164/75.
2634469	Apr, 1953	Pershing et al.	164/75.
2672666	Mar, 1954	Enfer et al.	164/75.
2800707	Jul, 1957	Whitfield et al.	204/38.
2974380	Mar, 1961	Jominy	164/102.
3064112	Nov, 1962	Hanzel	164/98.
3225400	Dec, 1965	Buschow	164/102.
3730758	May, 1973	Laidman	204/38.

Other Refs: 1,282,243203,188

Nov, 1968	DT
Jul, 1965	SW

Primary Examiner: Shore, Ronald J.
Assistant Examiner:
Attorney: Drucker; William Anthony