In this paper, the cold extrusion process of 7a04 aluminum alloy was developed for the production of a double-cup workpiece with a deep hole.

针对一种具有深孔的双杯形零件，对7a04铝合金复合冷挤压工艺进行了研究。

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A powerful drawing-thickening technology was prompted for double-cup-shaped workpieces, it combined the characteristics of cold extrusion with drawing process.

结合冷挤压与拉深工艺的特点，以双杯形工件为对象，开展了冲锻成形过程的强力拉深增厚工艺研究。

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Liverpool narrowly failed to secure a cup double earlier this month, losing 2-1 in the FA Cup final at Wembley by Chelsea, and then lost the final game of the season at Swansea.

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They include twice winning the Premiership and FA Cup double, in 1998 and 2002.

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Thompson netted 44 times last season to help Linfield claim a third successive league and cup double.

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