高压气瓶翻板旋压收口成形机理的数值模拟研究

发布时间：2018-01-18 04:08

本文关键词：高压气瓶翻板旋压收口成形机理的数值模拟研究　出处：《锻压技术》2015年12期 　论文类型：期刊论文

【摘要】：为深入研究高压气瓶翻板旋压收口成形机理,借助有限元分析软件Deform-3D,对翻板旋压收口成形过程进行了数值模拟研究。模拟分析结果表明:翻板与管坯接触区的金属受三向压应力作用,其塑性良好,在整个成形过程中,等效应力和等效应变速率变化基本一致,其规律是先增大后减小;等效应变基本沿轴向分层分布,且同一层圆周方向上的等效应变大小基本相等。3个旋压分力中,径向分力最大,切向分力稍大于轴向分力。气瓶增厚效果非常明显,最大壁厚值出现在瓶颈过渡处(此处内部易产生褶皱)。采用自行设计制造的610热旋压机进行了气瓶旋压收口试验,试验结果与模拟结果相吻合。
[Abstract]:In order to deeply study the forming mechanism of high pressure cylinder turning plate, the finite element analysis software Deform-3D is used. The numerical simulation results show that the metal in the contact zone between the rolling plate and the tube billet has good plasticity and good plasticity during the whole forming process. The change of equivalent stress and equivalent strain rate is basically the same, and the law is that it increases first and then decreases. The equivalent strain is distributed along the axial delamination, and the equivalent strain is equal in the same circumferential direction. The radial component is the largest of the three spinning fractions. The tangential force is slightly larger than the axial component force, and the thickening effect of the cylinder is very obvious. The maximum wall thickness appears at the transition point of the bottleneck (where the fold is easily produced inside). The air cylinder spinning test is carried out with 610 hot spinning machine designed by ourselves, and the experimental results are in good agreement with the simulation results.
【作者单位】：四川大学制造科学与工程学院;成都格瑞特高压容器有限责任公司;
【分类号】：TG306
【正文快照】： 高压气瓶属Ⅲ类压力容器,已广泛用于石油化工、机械、冶金、轻工、国防、环保、海洋、空间、生命等工业部门和科研领域[1]。旋压技术作为高压气瓶的主要生产方法,从根本上解决了传统气瓶焊接生产中焊缝的不连续、强度低、脆裂和应力集中等问题,同时旋压技术可以使具有金属变形

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