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The process structure characteristics and the quality demand of the battery covering of mobile telephone were analyzed, the structure and working process of the injection mold were introduced, the key points in designing the inner side delitescent sprue and designing the mechanism of the three orientation inner side core-pulling with the assembled slider were stated in detail.

分析了手机电池盖塑胶件的工艺结构特点及品质要求,介绍了其注射模的结构组成和工作过程,重点阐述了内侧潜伏式浇口及组合滑块三面内侧抽芯机构的设计要点。

This paper briefly introduced the key technique in the construction process of big-diameter and super-depth Cast-in-Situ pile for the 8000T block slipway of Tanggu basement.

简要介绍在塘沽基地8000T级组块滑道工程大直径超深灌注桩施工过程中的关键技术。