A novel constrained ring rolling process of deep-groove rings by coordinate controlling the roller motion

IF 2.6 3区 材料科学 Q2 ENGINEERING, MANUFACTURING
Jiadong Deng, Liang Di, Tian Yuan, Dongsheng Qian, Feng Wang, Yanhua Zhang, Jian Lan
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引用次数: 0

Abstract

Deep-groove rings are typical profiled rings which are widely used in connect flanges, casing, etc. In traditional ring rolling, the metal is easy to flow circumferentially to expand ring diameter, but it is difficult to flow axially and radially to form the irregular section contour, making it difficult to achieve near-net forming of the deep-groove ring. In this work, a novel constrained ring rolling of the deep groove ring is proposed, which can make the ring into a multi-point constrained deformation state by changing the control mode of guide roll and conical roll, limiting the circumferential metal flow ability and promoting the axial and radial metal flow ability, thus realizing the coordinated forming of the ring diameter and section profile. The evolution law of the ring geometry, metal flow deformation behavior, and the mechanical states between the roll and ring under the traditional ring rolling and constrained ring rolling were compared and analyzed by FE simulation. The influence of guide roll and conical roll motion control parameters was further studied and found that guide roll motion and conical roll speed have great influence on ring forming. Finally, a typical deep groove ring rolling experiment is carried out and the near-net rolling of deep groove ring can be realized by using the constrained ring rolling.

提出了一种坐标控制轧辊运动的深槽环件约束轧制新工艺
深槽环是一种典型的异形环,广泛应用于连接法兰、套管等场合。在传统的环件轧制中,金属易于沿周向流动以扩大环直径,但难以沿轴向和径向流动形成不规则的截面轮廓,难以实现深槽环件的近净成形。本文提出了一种新型的深槽环件约束环件轧制方法,通过改变导辊和圆锥辊的控制方式,限制金属的周向流动能力,提高金属的轴向和径向流动能力,使环件进入多点约束变形状态,从而实现环件直径和截面轮廓的协调成形。通过有限元仿真,对比分析了传统环件轧制和约束环件轧制条件下环件几何形态的演化规律、金属流动变形行为以及轧辊与环件之间的力学状态。进一步研究了导辊和锥辊运动控制参数对环件成形的影响,发现导辊运动和锥辊速度对环件成形有较大影响。最后,进行了典型的深槽环件轧制试验,利用约束环件轧制可以实现深槽环件的近净轧制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
International Journal of Material Forming
International Journal of Material Forming ENGINEERING, MANUFACTURING-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
5.10
自引率
4.20%
发文量
76
审稿时长
>12 weeks
期刊介绍: The Journal publishes and disseminates original research in the field of material forming. The research should constitute major achievements in the understanding, modeling or simulation of material forming processes. In this respect ‘forming’ implies a deliberate deformation of material. The journal establishes a platform of communication between engineers and scientists, covering all forming processes, including sheet forming, bulk forming, powder forming, forming in near-melt conditions (injection moulding, thixoforming, film blowing etc.), micro-forming, hydro-forming, thermo-forming, incremental forming etc. Other manufacturing technologies like machining and cutting can be included if the focus of the work is on plastic deformations. All materials (metals, ceramics, polymers, composites, glass, wood, fibre reinforced materials, materials in food processing, biomaterials, nano-materials, shape memory alloys etc.) and approaches (micro-macro modelling, thermo-mechanical modelling, numerical simulation including new and advanced numerical strategies, experimental analysis, inverse analysis, model identification, optimization, design and control of forming tools and machines, wear and friction, mechanical behavior and formability of materials etc.) are concerned.
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