Injection/Overmolding
Multishell process streamlines intake manifold
Mann + Hummel Automotive Inc. (Bloomfield Hills, Mich., U.S.A.) recently reengineered its production process for the air intake manifold on General Motors' four-cylinder, 2.2-liter Ecotec engine, replacing lost-core molding techniques with faster, less expensive "multishell" technology. Mann + Hummel now injection
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