GH4169合金螺栓镦制工艺及力学性能  

Upsetting process and mechanical propertties on alloy GH4169 bolt

作　　者：刘光辉 孙红星 刘丹[1] 孙晓军 秦单单 周玉辉 刘华 Liu Guanghui;Sun Hongxing;Liu Dan;Sun Xiaojun;Qin Dandan;Zhou Yuhui;Liu Hua(China Academy of Machinery Zhengzhou Research Institute of Mechanical Engineering Co.,Ltd.,Zhengzhou 450001,China;School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an 710049,China;Henan Aerospace Precision Manufacturing Co.,Ltd.,Xinyang 464000,China;School of Materials and Chemistry,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]中国机械总院集团郑州机械研究所有限公司,河南郑州450001 [2]西安交通大学机械工程学院,陕西西安710049 [3]河南航天精工制造有限公司,河南信阳464000 [4]上海理工大学材料与化学学院,上海200093

出　　处：《锻压技术》2025年第1期42-47,共6页Forging & Stamping Technology

基　　金：科研院所双创基金资助项目(203SC2023001-07);河南省重点研发专项基金资助项目(231111221800)。

摘　　要：为了研究某型号GH4169合金螺栓的镦制工艺及力学性能,利用Deform-3D有限元模拟软件对M30 mm×130 mm规格的GH4169合金螺栓的镦制成形过程进行了数值模拟,分析了不同摩擦因数对成形载荷的影响、成形过程中工件的等效应力和模具应力分布等,根据模拟结果设计、制造相应模具结构并完成了镦制工艺试验。将试验得到的GH4169合金螺栓锻件进行后续加工,分析时效处理与滚丝工艺的顺序对其显微组织及其力学性能的影响。研究结果表明,制定的GH4169合金螺栓镦制成形工艺是可行的,模具结构设计合理,加工时采用先时效处理后滚丝加工的制造工艺可降低材料的晶粒尺寸且具有良好的螺纹形态,其疲劳寿命高于先滚丝加工后时效处理的螺栓。研究结果对GH4169合金螺栓镦制工艺及后续加工方法具有较实用的指导价值。In order to study the upsetting process and mechanical properties of a certain model of alloy GH4169 bolt,the upseting process of alloy GH4169 bolt with M30 mmx130 mm was numerically simulated by finite element simulation software Deform-3D,and the influences of different friction coefficients on forming loads,equivalent stress distribution of workpieces and stress distribution in the molds during forming process were analyzed.Then,based on the simulation results,corresponding mold structures were designed,and corresponding upsetting process experiments were conducted.Furthermore,the ally GH4169 bolt forgings obtained from the experiment was performed subsequent process,and the influences of aging treatment and roling wire process sequence on their microstructure and mechanical properties were analyzed.The research results indicate that the developed alloy GH4169 bolt upsetting process is feasible,the mold structure design is reasonable,and the manufacturing process of aging treatment before rolling wire processing during processing can reduce the grain size of the material and have good thread morphology.Its fatigue life is higher than that of bolts processed by rolling wire processing before aging treatment.Thus,the research results have practical guidance value for the upsetting process and subsequent processing methods of alloy GH4169 bolts.

关 键 词：GH4169合金 镦制 模具结构 显微组织 力学性能 

分 类 号：TG316.3[金属学及工艺—金属压力加工]