基本解释：预锻
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After perfecting the structure and function of the system the preforging process and die structure are systemically and widely studied.本论文在完善系统结构和功能的基础上,对齿轮坯闭式模锻中的预锻工艺及模具结构设计做了系统深入的研究。
Relationship between preform shape and filling ratio was established and optimum was achieved by using PSO optimization method.针对二次多项式响应曲面在解决非线性问题时的局限性,提出了以神经网络为基础构建响应曲面的方法,建立了预锻模具形状与填充度之间的映射关系,并结合离子群优化算法(PSO)求得最优解,以两工步二维轴对称锻造问题为例,验证了其效果良好。
The structural dimension of piston tail forging part and the key technology of die forging were analyzed in detail,then a three-step die forging process was determined which included blocker forging,finish forging and trimming.详细分析活塞尾锻件结构尺寸和模锻成型的关键技术,制定了三步模锻成型工艺:预锻成型、终锻成型和切边,设计了模具结构。
Study on preform design for typical die forging;典型模锻件的预锻设计方法研究
