羊角锤楔横轧制坯模具设计

叙述了羊角锤模锻前的毛坯生产所存在的问题，提出了合理的楔横轧制坯工艺，为随后的模锻工艺（充填型槽）创造极为有利的金属流动条件。通过实例介绍，阐述了楔横轧模具设计的工艺尺寸参数及计算公式。列出了新旧制坯工艺的技术、经济分析与比较。

汽车轴类零件成型新工艺—楔横轧制

许多机器、汽车、电机等等,都需要变断面轴类零件,传统的生产方法是铸造或锻造毛坯,然后切削加工而成。其生产效率低,材料消耗量大和生产连续性差。为了克服这些缺点,各企业都非常重视寻求新的成型工艺。楔横轧成型工艺具有多种优点,受到人们的重视,并且得到迅速发展。 与常用的成型工艺——铸造、锻造及切削相比较,楔横轧技术有以下优点: (1)金属利用率高,比传统加工法提高20％～30％。 (2)生产率高,每分钟轧制6～12件,比铸、锻加工法生产效率提高3～7倍。 (3)节材率20％～40％,节能30％以上,

轧制技术在汽车工业中的应用

介绍了各种轧制技术在汽车工业中的应用状况,并论述了其在汽车制造技术中的优势。

制造采矿工具的新工艺

1概述 采矿工具是用来装备采矿机的工作机构的.联合采矿机的生产率和产品成本将取决于刀具的耐用度.提高采矿工具的耐用度问题甚为迫切,因为采矿机的切削速度和进给量呈逐渐上升趋势.

居“高”声自远──一个镇办“弹丸”小厂依靠高科技腾飞的调查

居“高”声自远──一个镇办“弹丸”小厂依靠高科技腾飞的调查顺义县委研究室市委研究室经济处本刊三编室一北京钢顺联营楔横轧厂，位于京郊顺义县杨镇，是一家镇办的、仅有３００名职工的“弹丸”小厂。但它却拥有当今世界上最先进、现代化水平最高的楔横轧技术，成为我...

Evolution of microstructure of aluminum alloy hollow shaft in cross wedge rolling without mandrel

During the process of cross wedge rolling of aluminum alloy hollow shaft, the evolution of its microstructure has an important influence on the mechanical properties of the rolled piece. In order to obtain the microstructure evolution law of aluminum alloy hollow shaft in cross wedge rolling without mandrel, a finite element model is constructed through the finite element software Deform-3D. The influences of rolling temperature, sectional shrinkage,spreading angle and forming angle on the average grain size of rolled piece are studied by numerical simulation of microstructure evolution. The cellular automata method reveals the inherent relationship between the process parameters and the evolution of the microstructure, and provides a reference for optimizing the rolling process parameters of aluminum alloy hollow shafts and improving the forming quality. The results show that the average grain size of the rolled piece increases with the increase of the rolling temperature, decreases with the increase of the sectional shrinkage,and decreases first and then increases with the increase of the spreading angle, and changes little with the increase of the forming angle.