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Li W.,Guangdong Hongteo Precision Technology Co. | Li S.,Guangdong Hongteo Precision Technology Co. | Luo J.,Guangdong Hongteo Precision Technology Co. | Cai G.,Guangdong Hongteo Precision Technology Co.
Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys | Year: 2011

There exist many isolated resonance signal columns in filter mould with deep cavity, resulting in the easy occurrence of cold shut, gas hole and shrinkage porosity in die casting process. Amounts of micro-hole occur in the surface layer of concave column after machining to affect the product function. Through adjusting mould design, die casting parameters and welding repair treatment for the filter cavity, micro-hole is greatly decreased in machined resonance signal column in the mould, increasing the qualified rate of product. Source

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