多向加载旋转挤压新技术

IF 4.2 2区 工程技术 Q1 Engineering Chinese Journal of Mechanical Engineering Pub Date : 2023-10-19 DOI:10.1186/s10033-023-00942-1
Zhimin Zhang, Yong Xue, Xing Zhang, Beibei Dong, Mei Cheng, Zhe Chen
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引用次数: 0

摘要

摘要为满足大型高性能轻型内环增强件精密成形的要求,开发了一种新的多向加载旋转挤压成形技术,将直线运动与旋转运动相匹配,主动增加强剪切力。其原理是当毛坯轴向挤压和加载时,径向力和旋转扭矩增大。通过轴向运动、径向运动和旋转运动的协同作用,控制金属有序流动,产生“扬铲”微区累积严重塑性变形(SPD)。因此,材料被均匀强化和增韧。同时,通过冲头“椭圆-圆”的连续变形,在筒壁上生长出高配筋构件,实现圆柱件或内圈配筋构件的高质量成形。有效应变随转速增加而增大,基面上最大强度随转数增加而减小。冲头结构对轴向挤压载荷和等效塑性应变也有影响。从而丰富了塑性成形理论,拓宽了塑性成形的应用领域。成形的大型高性能内圈加筋镁合金构件在航空航天设备上得到了成功验证,从而解决了整体成形和剧烈变形强化增韧问题。所开发的技术具有良好的批量生产和应用前景。
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New Technology of Multidirectional Loading Rotary Extrusion
Abstract To satisfy the requirements for the precise formation of large-scale high-performance lightweight components with inner ring reinforcement, a new multidirectional loading rotary extrusion forming technology is developed to match the linear motion with the rotary motion and actively increases the strong shear force. Its principle is that the radial force and rotating torque increase when the blank is axially extruded and loaded. Through the synergistic action of axial, radial, and rotating motions, the orderly flow of metal is controlled, and the cumulative severe plastic deformation (SPD) of an “uplift-trowel” micro-area is generated. Consequently, materials are uniformly strengthened and toughened. Simultaneously, through the continuous deformation of a punch “ellipse-circle,” a high reinforcement component is grown on the cylinder wall to achieve the high-quality formation of cylindrical parts or the inner-ring-reinforcement components. Additionally, the effective strain increases with rotation speed, and the maximum intensity on the basal plane decreases as the number of revolutions increase. The punch structure also affects the axial extrusion loading and equivalent plastic strain. Thus, the proposed technology enriches the plastic forming theory and widens the application field of plastic forming. Furthermore, the formed large-scale high-performance inner-ring-stiffened magnesium components have been successfully verified in aerospace equipment, thereby solving the problems of integral forming and severe deformation strengthening and toughening. The developed technology has good prospects for mass production and application.
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来源期刊
CiteScore
5.60
自引率
4.80%
发文量
3097
审稿时长
8 months
期刊介绍: Chinese Journal of Mechanical Engineering (CJME) was launched in 1988. It is a peer-reviewed journal under the govern of China Association for Science and Technology (CAST) and sponsored by Chinese Mechanical Engineering Society (CMES). The publishing scopes of CJME follow with: Mechanism and Robotics, including but not limited to -- Innovative Mechanism Design -- Mechanical Transmission -- Robot Structure Design and Control -- Applications for Robotics (e.g., Industrial Robot, Medical Robot, Service Robot…) -- Tri-Co Robotics Intelligent Manufacturing Technology, including but not limited to -- Innovative Industrial Design -- Intelligent Machining Process -- Artificial Intelligence -- Micro- and Nano-manufacturing -- Material Increasing Manufacturing -- Intelligent Monitoring Technology -- Machine Fault Diagnostics and Prognostics Advanced Transportation Equipment, including but not limited to -- New Energy Vehicle Technology -- Unmanned Vehicle -- Advanced Rail Transportation -- Intelligent Transport System Ocean Engineering Equipment, including but not limited to --Equipment for Deep-sea Exploration -- Autonomous Underwater Vehicle Smart Material, including but not limited to --Special Metal Functional Materials --Advanced Composite Materials --Material Forming Technology.
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