Coil retainer for engine valve and preparation of the same

Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal

Patent

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Details

148697, 148700, 148439, 420534, F01L 310, C22F 104

Patent

active

056161921

ABSTRACT:
There is provided a coil retainer for an engine valve to be mounted therewithin, said retainer prepared by forging of an aluminum-based alloy of the following composition; followed by special combined heat treatments to convert into an alloy material having a dendrite arm spacing value less than 15 micrometer; and the composition being composed of

REFERENCES:
patent: 4786340 (1988-11-01), Ogawa et al.

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