锻压技术

航天用超大规格GH4169高温合金螺栓热镦工艺

英文标题：Hot upsetting process of supersized superalloy GH4169 bolts for aerospace

作者：金宏殷银银刘乐刘丹

单位：1.河南省紧固连接技术重点实验室 2.河南航天精工制造有限公司 3.郑州机械研究所有限公司

分类号：TG314.3

出版年,卷(期):页码：2022,47(6):55-60

摘要：

为研究一种航天用超大规格GH4169高温合金螺栓热镦工艺，利用热模拟试验机对材料进行了高温压缩实验，分析了不同变形温度和应变速率对材料变形抗力的影响，并对GH4169高温合金螺栓的热镦成形过程进行了数值模拟，分析了成形过程中等效应力场分布、损伤值分布、金属流线分布、摩擦因数对成形载荷的影响，最后进行了工艺实验。研究结果表明：应变速率一定时，随着变形温度的升高，材料的变形抗力逐渐降低；变形温度一定时，随应变速率的增大，材料的变形抗力逐渐增大；摩擦因数μ=0.3时成形过程中的最大载荷为3.56×106 N，摩擦因数μ=0.5时成形过程中的最大载荷为4.11×106 N。工艺实验得到的GH4169高温合金螺栓锻件充填饱满，尺寸符合要求，未发现锻造缺陷，符合航天领域使用需求。

In order to study the hot upsetting process of super\|sized GH4169 superalloy bolts for aerospace, the high\|temperature compression experiment of material was carried out by the thermal simulation testing machine, and the influences of different deformation temperatures and strain rates on the deformation resistance of material were analyzed. Then, the hot upsetting process of superalloy GH4169 bolts was numerically simulated, and the influences of the distributions of equivalent stress field, damage value and metal streamline, and friction factor on forming load during the forming process were analyzed. Finally, the process experiment was carried out. The results show that when the strain rate is constant, the deformation resistance of material decreases gradually with the increaseing of deformation temperature. When the deformation temperature is constant, the deformation resistance of material increases gradually with the increaseing of strain rate. When the friction factor μ=0.3, the maximum load in the forming process is 3.56×106 N，and when the friction factor μ=0.5, the maximum load in the forming process is 4.11×106 N. The superalloy GH4169 bolt forgings obtained by the process experiment are fully filled, the sizes meet the requirements, and no forging defects are found, which meets the using needs of aerospace field.

基金项目：

国家科技重大专项资助项目（2013ZX04002081）

金宏（1989-），男，学士，工程师 Email：jin_hong@casic694.com

参考文献：

[1]王迎，潘清林，张宇玮，等.GH4169镍基高温合金热压缩变形行为和加工图[J].中南大学学报: 自然科学版，2014,45（11）:3752-3761.

Wang Y，Pan Q L，Zhang Y W，et al. Hot deformation behavior and processing map of GH4169 super alloy[J].Journal of Central South University: Science and Technology，2014,45（11）:3752-3761.

[2]李爱兰, 曾燮榕, 曹腊梅, 等. 航空发动机高温材料的研究现状[J]. 材料导报, 2003, 17(2): 26-28.

Li A L, Zeng X R, Cao L M, et al. Current status of research on high temperature materials for advances aircraft engines[J]. Materials Review, 2003, 17(2): 26-28.

[3]师昌绪, 仲增墉. 中国高温合金 40 年[J]. 金属学报, 1997,33(1): 1-8.

Shi C X, Zhong Z Y. Forty years of super alloy R & D in China [J]. Acta Metallurgica Sinica, 1997, 33(1): 1-8.

[4]谢锡善. 我国高温材料的应用与发展[J]. 机械工程材料, 2004,28(1): 2-8.

Xie X S. The development and application of high temperature materials in China[J]. Materials for Mechanical Engineering, 2004, 28(1): 2-8.

[5]李晨, 李淼泉, 王柯. 固溶处理 GH4169 合金的高温变形行为[J]. 航空学报, 2010, 31(2): 360-375.

Li C, Li M Q, Wang K. Deformation behavior of nickel based super alloy GH4169 through solution treatment[J].Acta Aeronautica et Astronautica Sinica, 2010, 31(2): 360-375.

[6]刘乐, 殷银银, 金宏，等. 超大规格GH4169高温合金螺栓成形工艺及模具结构优化[J]. 制造技术与机床, 2022, 27(4): 110-115.

Liu L, Yin Y Y, Jin H, et al. Forming process and die structure optimization of super large size GH4169 super alloy bolt [J]. Manufacturing Technology & Machine Tool, 2022, 27(4): 110-115.

[7]王蓬书，李琴敏，韦贤毅，等. 固溶对 GH4169 合金晶粒尺寸与力学性能的影响 [J]. 热加工工艺，2018，47(4)：245-249.

Wang P S，Li Q M，Wei X Y, et al. Effect of solid solution on grain size and mechanical properties of GH4169 alloy[J].Hot Working Technology, 2018,47(4)：245-249.

[8]张海燕，张士宏，程明. δ 相对 GH4169 合金高温拉伸变形行为的影响 [J]. 金属学报，2013,49(4)：483-488

Zhang H Y，Zhang S H，Cheng M. Effect of δ phase on the tensile deformation behavior of GH4169 alloy at high temperature[J] Acta Metallurgica Sinica, 2013,49(4)：483-488.

[9]时伟，王岩，邵文柱，等.GH4169 合金高温塑性变形的热加工图[J].粉末冶金材料科学与工程，2012，17(3): 281-289.

Shi W，Wang Y，Shao W Z，et al.Processing map of GH4169 alloy during hot plastic deformation[J].Materials Science and Engineering of Powder Metallurgy，2012，17(3): 281-289.

[10]罗俊鹏，杨成斌,丁凯，等.GH4169 合金细长轴锻件局部锻造成形工艺研究[J].热加工工艺，2018,47（13）:160-163

Luo J P，Yang C B，Ding K, et al. Study on local forging process of GH4169 alloy slender shaft forgings[J]. Hot Working Technology, 2018,47(13)：160-163.

[11]李钊，王彦菊，耿长建，等. 镦制温度对 GH4169 合金紧固件组织的影响[J].材料热处理学报，2020，41(5):79-86.

Li Z，Wang Y J，Geng C J，et al.Effect of heading temperature on microstructure of GH4169 alloy fasteners[J].Transactions ofMaterials and Heat Treatment，2020，41(5):79-86.

[12]吕旭东，邓群，杜金辉，等.GH4169 合金盘件热模锻工艺优化[J].钢铁研究学报，2011,(S2):158-161.

Lyu X D，Deng Q，Du J H，et al.Technics optimization of hot die forging for GH4169 disk[J].Journal of Iron and Steel Research，2011,(S2):158-161.

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