The extrusion process for hole is a simple and reliable method fors mall sized and exact holes in batches.
孔的挤压加工是成批加工较小尺寸精密孔的一种简单和可靠的方法。
The extrusion and piercing die was developed based on the technical analysis on the shaping characteristics of deep taper pipe with hole.
针对带孔深锥形管件的成形特点进行了工艺分析，确定了成形方案，设计了锥形管挤压模和冲孔模。
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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