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1)  pre-forging
预锻
1.
The pre-forging of connecting rod of automob ile engine was simulated by the FEM and its pre-forging billet was optimized,so the utilization ratio of material was improved.
利用有限元方法模拟了汽车发动机连杆的预锻过程,对连杆的预锻毛坯进行了优化,从而有效地提高了预锻毛坯的利用率;在此基础上,对优化后的毛坯,根据4种不同锻造设备的加载方式进行了预锻过程的有限元模拟。
2)  blocker forging
预锻成型
1.
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。
3)  preform design
预锻设计
1.
Study on preform design for typical die forging;
典型模锻件的预锻设计方法研究
4)  closed die performing
闭塞预锻
5)  blocking die
预锻模
6)  advance forging
预锻成形
1.
A streamline advance forging cavity based on the flow curve and the theory of equal section is constructed,and the cold extrusion process is simulated using a rigid-plastic finite element analysis software.
建立了基于流曲线和等截面理论的流线型预锻成形腔,通过刚塑性有限元软件对挤压过程进行了数值模拟。
补充资料:预成型料
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性质:为改进塑料的某些力学性能,或改善制品质量,提高加工效率,或为精确称量,将粉料、粒料预先压制成一定形状的坯料;或在制备玻璃纤维增强的热固性材料时,在闭模前,将预先裁制的玻纤织物或片状模塑料放置在模具中,然后再进行注射或压制。这些物料亦称作预成型料。

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