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T he use of thin-wall AlSi10MnMg high pressure die casting (HPDC) parts has grown considerably in past years and is still continuously rising in the automotive industry [1]. Due to lightweight necessity, the number of thin-wall AlSi10MnMg HPDC aluminum parts, such as suspension components, supporting parts and wheels, is rising with a lot of advantages due to good mechanical properties [2-3]. High pressure die casting is a kind of near net shape manufacturing method of complex geometry parts in the automotive industry at relatively low production costs [4]. It is a very suitable way to produce thin-wall AlSi10MnMg supporting parts [5]. However, defects like air entrapment formed at the fi lling stage have infl uenced the quality and the application of thin-wall HPDC AlSi10MnMg parts due to the fact that the gas has not enough time to escape from the casting because of the irrationality of the gating system design. Therefore, a reasonable design for a gating system is one of the key factors to assure product quality during the production of

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