Compared with general die, to use curved die can reduce limit drawing coefficient, reduce procedures, raise efficiency and reduce costs.
曲面凹模拉深与普通平端面凹模拉深相比，能够降低极限拉深系数，减少工序，提高效率和降低成本。
The effect laws of process parameters on limit drawing coefficient which has been deduced in this paper provide a reliable theoretical basis for choice and design of the process in practice.
文中得出的工艺参数对极限拉深系数的影响规律为实际生产中工艺选择及制订提供了可靠的理论依据。
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