共查询到19条相似文献,搜索用时 78 毫秒
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电磁成形技术在粉末成形中的应用 总被引:1,自引:0,他引:1
介绍了电磁成形技术、粉末挤压成形方法以及电磁成形技术在粉末成形中的应用.用电磁成形技术压制粉末材料是获得高密度、高性能粉末冶金制品的一种有效方法,是低成本制造高密度陶瓷零件的新途径. 相似文献
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在LF3防儿中合金板超塑性变形特性研究的基础上,对该材料的超塑气压成形进行了研究。结果表明,LF3防锈铝合金板材在成形温度为500℃,吹气压力由低到高,逐步升到1.4MPa压力,单件吹塑时间约30min。采用Ti-3及蜂蜡作润滑剂,效果良好。经过小批量生产实践证明,工艺稳定,产品性能,经济效益显著。 相似文献
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塑性有限元模拟技术在金属板料成形中的应用 总被引:3,自引:0,他引:3
板料塑性有限元模拟技术是冲压工程中的一项新技术,在我国还较落后。本文论述了板料塑性有限元模拟技术的优点及其力学特点,归纳总结了此项技术在国外的发展历史。本文旨在使国内同行了解国外的研究状况,以尽快缩短与国外的差距。 相似文献
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电磁成形技术的研究与应用 总被引:5,自引:0,他引:5
电磁成形技术作为高能、高效率技术有着传统成形方法不能比拟的优越性,在工业生产中应用十分广泛。主要介绍了电磁成形在管材成形、平板件成形、冲裁、铆接、焊接、电磁粉末压制等方面的应用。 相似文献
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Electromagnetic (EM) forming is a high-speed forming process that uses the forces induced on a conductive workpiece by a transient high frequency magnetic field to form the workpiece into a desired shape. This paper describes the results of a work undertaken to study the reduction of a 20 mm radius to 5 mm in 1 mm AA 5754 sheet by conventional metal forming process and by electromagnetic forming. The combination of conventional and EM forming will be referred to as “hybrid forming”. The 20 mm radius was pre-formed from flat sheet using a conventional die, punch and binder that allowed the material to draw in. The radius was then reduced to 5 mm, with no draw-in allowed for either process. Sheets were studied in the as-received condition and were also pre-strained to 5%, 10% and 15% to simulate strain path effects in a multiple stage forming operation. The process was modelled numerically to gain insight into the stress, strain and strain rate histories. The research indicates that features that are not achievable using traditional stamping techniques can be obtained with the aid of EM forming. 相似文献
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半固态金属成形技术具有高效、节能、近净成形及成形件性能高等许多优点.本文从半固态成形技术的背景、半固态的制备新技术、半固态模拟技术、半固态应用实例等方面论述了半固态成形技术的最新进展,并叙述了半固态技术的发展方向以及在我国的应用展望. 相似文献