共查询到19条相似文献,搜索用时 93 毫秒
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主要对本钢薄板坯连铸摆剪变频系统的构成及工作原理进行了介绍,对生产过程中出现的问题,进行了详细的分析,针对这些问题提出了摆剪变频系统优化方案并进行了实施。 相似文献
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《锻压装备与制造技术》2020,(3)
介绍了自动化落料线的基本组成和原理,并对摆剪模结构做了详细介绍。带摆剪模具的自动化落料生产线,不仅可以实现落料线中落料压膜,更可以将不同的板材按设定的角度切成菱形、平行四边形、梯形等。 相似文献
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苏联发明的这种剪用来横切运动着的金属坯,例如连铸坯。现有的摆式剪结构是:框架悬挂在固定轴上,并有两个相互作用的剪刃。然而,这种飞剪剪切质量不好。框架自由悬挂在轴上,下剪刃固定在框架上,液压缸也装在其中,缸的活塞杆与沿框架导轨滑动的刀架相联,上剪刃就固定在该刀架上。这种结构的摆式剪在技术性能方面最接近本刊将介绍的液压摆式剪。其缺点是:切口不垂直,以及剪刃承受剪刀相对待切坯料的偏转而引起的附加载荷。此外,在剪切过程中,坯料切断部分向运输面下方移动,这就要求在剪切机后面设有专门的摆动辊道。与一般运输辊道相比,其结构更为复杂。本发明目的在于:改善剪切质量,并通过减少剪刀相对于待切坯料的偏转而提高剪刃的使用受命。为此,剪切机上要增设与悬挂轴绞接的摆杆和摆杆的缓冲档块。图1中示出了所推荐的液压摆式剪始切状态;图2示出了剪切机的终切状态。 相似文献
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对摆式剪的运动和受力进行了详细分析,阐明了摆式剪运动和受力之间的关系,确定了摆式剪曲轴正确的旋转方向,有助于提高设备运行的稳定性和延长使用寿命。 相似文献
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H.P. Yang Y.H. ShaF. Zhang L. Zuo 《Journal of Materials Processing Technology》2010,210(12):1545-1550
Through-thickness shear strain distribution in cold rolled non-oriented silicon steel under different roll gap geometries and friction coefficients was analyzed by finite element method (FEM). Cold rolling textures were also investigated quantitatively to validate the calculated shear strain distribution. The results showed that both direction and magnitude of shear strain through thickness depend sensitively on the two rolling parameters. The coupling effect of roll gap geometry and friction was satisfactorily explained based on their contributions to shear strain and the involved mechanisms. A shear strain distribution diagram (SSDD), which can clearly characterize the shear strain state with roll gap geometry, friction and through-thickness position as variables, was proposed to serve as a convenient tool for through-thickness shear strain control. 相似文献
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以目前国内外已公开的薄带连铸专利为基础,综述了生产低碳钢薄带产品时微裂纹形成的主要影响因素.采用对钢液的碳、硅、锰、硫的含量进行严格控制;通过真空处理减少钢液中的气体含量;形成足够数量的低熔点夹杂物;采用合适的结晶辊形貌等措施,对于改善结晶辊和铸带之间的传热、减少和控制薄带连铸低碳钢产品的微裂纹缺陷有效果. 相似文献
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Longitudinal and shear strain development in cold roll forming 总被引:3,自引:0,他引:3
S. M. Panton J. L. Duncan S. D. Zhu 《Journal of Materials Processing Technology》1996,60(1-4):219-224
In this paper we examine strain development during the roll forming process and particularly the relationship between longitudinal and shear strain. It can be shown that theoretically it is possible for there to be no longitudinal strain during roll forming (in which case there would be shear strain) or no shear strain (in which case there would be longitudinal strain). In actual practice the strain will lie between these two extremes and will comprise both shear and longitudinal strain. This is seen to be consistent with experimental results. 相似文献