锻压技术2025，Vol.50Issue(1) ：42-47.DOI:10.13330/j.issn.1000-3940.2025.01.006

GH4169合金螺栓镦制工艺及力学性能

Upsetting process and mechanical properties on alloy GH4169 bolt

刘光辉 孙红星 刘丹 孙晓军 秦单单 周玉辉 刘华
锻压技术2025，Vol.50Issue(1) ：42-47.DOI:10.13330/j.issn.1000-3940.2025.01.006
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GH4169合金螺栓镦制工艺及力学性能

Upsetting process and mechanical properties on alloy GH4169 bolt

刘光辉 1孙红星 2刘丹 1孙晓军 3秦单单 3周玉辉 4刘华1
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作者信息

  • 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. 中国机械总院集团郑州机械研究所有限公司,河南 郑州 450001;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
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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.

Abstract

In order to study the upsetting process and mechanical properties of a certain model of alloy GH4169 bolt,the upsetting process of alloy GH4169 bolt with M30 mm×130 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 form-ing process were analyzed.Then,based on the simulation results,corresponding mold structures were designed,and corresponding upsetting process experiments were conducted.Furthermore,the alloy GH4169 bolt forgings obtained from the experiment was performed subsequent process,and the influences of aging treatment and rolling wire process sequence on their microstructure and mechanical properties were ana-lyzed.The research results indicate that the developed alloy GH4169 bolt upsetting process is feasible,the mold structure design is reasona-ble,and the manufacturing process of aging treatment before rolling wire processing during processing can reduce the grain size of the materi-al 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

Key words

alloy GH4169/upsetting/die structure/microstructure/mechanical property

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出版年

2025
锻压技术
北京机电研究所 中国机械工程学会塑性工程学会

锻压技术

CSCD北大核心
影响因子：0.954
ISSN：1000-3940
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