中北大学学报（自然科学版）2025，Vol.46Issue(2)：165-180,16.DOI:10.62756/jnuc.issn.1673-3193.2024.05.0006
高强耐热镁合金舱段旋转挤压成形技术研究
Research on Rotary Extrusion Forming Technology of High-Strength and Heat-Resistant Magnesium Alloy Cabin
摘要
Abstract
The cabin components,serving as primary load-bearing structures of spacecraft,still adhere to a product-specific manufacturing process,lagging behind the requirements of aerospace's"pulsatile"fabri-cation(characterized by fluctuations in axial and radial dimensions).This necessitates breakthroughs in flexible manufacturing key technologies.At the same time,it is difficult to prepare the cabin components due to the characteristics of the wall inclination angle and the large change of the wall thickness,and the traditional rotary extrusion method is difficult to prepare.On this basis,this paper took the common key technology of flexible manufacturing of multi-specification high-strength heat-resistant magnesium alloy cabins as a breakthrough,and proposed a radial loading multi-stage sequential rotary extrusion forming method(hereinafter referred to as rotary extrusion),by forming different parts step by step to realize the preparation of shaped cabin components.And combined with the analysis and calculation of plastic form-ing theory and finite element simulation,the stress field and strain field distribution of the metal in the forming process were analyzed,and the law of metal flow was revealed,that is,achieving coordinated deformation in both radial and axial directions is crucial for the extrusion process.The effects of different convex mold structure and process parameters on the forming load and metal deformation law were investi-gated,and the optimal forming process plan was finally determined as the height of the working belt of the convex mold h=70 mm,and the deformation speed was 1 mm/s,the deformation temperature was 480℃,and the friction coefficient was 0.3.关键词
稀土镁合金/旋转挤压/工艺参数/有限元仿真Key words
rare earth magnesium alloy/rotary extrusion/process parameter/finite element simulation分类
金属材料引用本文复制引用
王超,赵熹..高强耐热镁合金舱段旋转挤压成形技术研究[J].中北大学学报（自然科学版）,2025,46(2):165-180,16.基金项目
山西省科技合作交流专项(202104041101033) （202104041101033）
山西省科技创新团队专项资金资助项目山西省科技合作交流专项(202104041101033) （202104041101033）
山西省科技创新团队专项资金资助项目 （）
