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Study on the Composition and Properties of Salt Cores for Zinc Alloy Die Casting

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Abstract

Soluble salt cores have been successfully used for the die casting of aluminum and magnesium alloys. However, it has not been reported that the soluble salt cores were used for zinc alloy die casting. In this paper, a soluble salt core system of low melting salt A–potassium chloride-reinforcing particles was put forward for zinc alloy die casting in the sanitary industry. Reinforcing particles included layered material B, acicular material C and alpha-Al2O3 (α-Al2O3). The salt core system and the mixtures of salts and reinforcing particles were analyzed by scanning electron microscopy, differential thermal analysis, thermogravimetric analysis and X-ray diffraction. In addition, the “triplet” salt cores prepared by high pressure core-making were used for zinc alloy high pressure die casting (HPDC). “Triplet” articles were washed, dried, pretreated, electroplated and detected according to the die casting industry standards. The salt core system could be recycled and had no corrosion to casting articles. It was observed that the zinc alloy articles basically met the technical requirements of zinc alloy castings. In conclusion, the salt core system was suitable for a certain shape of zinc alloy castings by HPDC.

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Authors and Affiliations

  1. Shandong University of Science and Technology, Qingdao City, Shandong, China

    Renhe Huang & Baoping Zhang

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  1. Renhe Huang
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  2. Baoping Zhang
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Correspondence to Renhe Huang.

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Huang, R., Zhang, B. Study on the Composition and Properties of Salt Cores for Zinc Alloy Die Casting. Inter Metalcast 11, 440–447 (2017). https://doi.org/10.1007/s40962-016-0086-7

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  • DOI: https://doi.org/10.1007/s40962-016-0086-7

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