摘要
针对一种小型套管采用棒料挤压成形时工序多、模具成本高的问题,拟采用管料挤压工艺进行替代,从而减少与孔成形相关的工序。首先,通过数值模拟软件Deform-3D对原工艺进行成形模拟,验证了材料模型等建模结果的可靠性。然后,对新工艺进行模拟分析,发现成形后套管头部存在折叠缺陷,与实际试验结果一致,分析缺陷产生的原因并提出了解决方案,改进了模具结构,结果显示:当下模浮动且合理设置顶环位置时,能避免折叠缺陷,并完成管料挤压成形,获得成形效果较好的套管零件。经实际生产验证,新工艺能满足生产要求,成形的套管零件的质量较好,无折叠等缺陷。与原工艺相比,虽然坯料价格更高,但模具成本更低,材料利用率更高,总体上实现了降本的目的。
For the problem of multiple processes and high die cost when forming a small casing by bar extrusion,it was proposed to use tube extrusion process to replace it,thereby reducing the process related to hole forming.Firstly,the forming simulation of the original process was conducted by using numerical simulation software Deform-3D to verify the reliability of the modeling results such as material model.Secondly,a simulation analysis of the new process was conducted,and it was found that there were folding defects in the casing head after forming,which was consistent with the actual test results.Then,the causes of defects were analyzed,and the solutions were proposed to improve the die structure.The results show that when the lower die is floating and the top ring position is set appropriately,folding defects can be avoided,and the tube extrusion forming can be completed to obtain the casing parts with better forming effects.Af-ter actual production verification,the new process can meet the production requirements,and the quality of the formed casing parts is good,without various defects such as folding.Compared with the original process,although the billet price is higher,the die cost is low-er,the material utilization rate is higher,and overall cost reduction is achieved.
作者
陈小梅
黄惠
Chen Xiaomei;Huang Hui(Mechanical and Electrical Engineering Department,Fuzhou Polytechnic,Fuzhou 350108,China;School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou 350108,China)
出处
《锻压技术》
CAS
CSCD
北大核心
2023年第10期116-122,共7页
Forging & Stamping Technology
基金
2022年福州职业技术学院产学合作开发项目(FZYKJJJCX202202)
国家自然科学基金(青年)资助项目(52105053)
2021年福州职业技术学院教学改革研究课题(2021jgkt016)。
