... trimming and piercing die 修边冲孔模 ; 切边冲孔模 ; 修边冲孔 piercing and shaping die 冲孔成形 drawing and shaping die 拉延成形模 ...
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shaping and piercing die 成形冲孔模 ; 成形冲孔
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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。
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