The weaknesses have been pointed out of former die structure for upsetting and extruding dumb iron. A de-sign of new type of combination die has been presented, resulting in markedly reduced die cost.
针对原弹簧座镦挤模具结构的缺陷，设计了新型镶块式模具结构，使模具成本显著降低。
The weaknesses have been pointed out of former die structure for upsetting and extruding dumb iron. A de-sign of new type of combination die has been presented, resulting in markedly reduced die cost.
针对原弹簧座镦挤模具结构的缺陷，设计了新型镶块式模具结构，使模具成本显著降低。
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