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Furukawa Review No.32

Development of Manufacturing Technology for Precision Compressor Wheel Castings for Turbochargers

Furukawa-Sky Aluminum
Takayuki Sotome and Shoichi Sakoda

Abstract

Recently, the demand for turbo chargers for automobiles is increasing worldwide because of the emission regulations in Europe and the expansion of the Asian car market. The compressor wheel is the main unit of a turbo charger, and not only high durability, but also high dimensional accuracy, is required of it by customers. The most important prop-erty required is the initial balance (i.e., coaxiality). We have developed a new manufacturing technology at our casting plant to improve the initial balance.

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