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。
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。
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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