锻压技术

深海系统连接毂的锻造及热处理工艺

英文标题：Forging and heat treatment process on connection hub for deep-sea system

单位：1. 中海石油（中国）有限公司海南分公司 2. 中国海洋石油集团有限公司 3. 张家港海锅新能源装备股份有限公司

分类号：TG115

出版年,卷(期):页码：2024,49(1):54-58

摘要：

基于我国南海某深海油气田开发经验，立足于现场低温、高压等工况要求，对深海连接系统锻件的锻造和热处理工艺进行合理设计，以确保该连接毂锻件能够满足深海油气井的开发生产需求。结合化学成分控制对连接系统大壁厚锻件进行试生产，同时开展锻件试样的化学成分、力学性能、冲击功和显微组织的相关分析。结果表明：锻件的化学成分和力学性能优异，满足深海生产工况实际要求；经过生产工艺优化后，锻件的力学性能良好，具备良好的冲击断裂韧性；热处理后的显微组织为粒状贝氏体+铁素体，晶粒度为9级，不同位置的晶粒度较为均匀，且非金属夹杂物未见明显差异。

Based on the development experience of a deep-sea oil and gas field in the South China Sea, and based on the working condition requirements of on-site low-temperature and high-pressure, the forging and heat treatment process of the deep-sea connection system forgings were reasonably designed to ensure that the connection hub forgings met the development and production needs of deep-sea oil and gas wells. Then, combined with chemical composition control, the trial production of large-wall-thickness forgings of connection system was carried out, and the related analysis on the chemical composition, mechanical properties, impact energy and microstructure of the forgings samples were carried out. The results show that the chemical composition and mechanical properties of the forgings are excellent and meet the actual requirements of deep-sea production working conditions. After the optimization of production process, the mechanical properties and impact fracture toughness of the forgings are good. The microstructure after heat treatment is granular bainite + ferrite with with grain size of 9. The grain size at different positions is more uniform, and there is no obvious difference in non-metallic inclusions.

基金项目：

工业和信息化部高技术船舶与科研项目（MC-202030-H04）；国家发展和改革委员会项目（LSZX-2020-HN-05）；国家发展和改革委员会科技攻关项目（CCL2020HNFN0183）

作者简介：董晓雨（1982-），男，硕士，高级工程师 E-mail：dongxy10@cnooc.com.cn 通信作者：刘统亮（1997-），男，硕士，工程师 E-mail：liutl6@cnooc.com.cn

参考文献：

[1] 谢彬,曾恒一.我国海洋深水油气田开发工程技术研究进展[J].中国海上油气,2021,33(1):166-176.

Xie B，Zeng H Y. Research advancement in offshore deepwater oil and gas development engineering technologies in China[J]. China Offshore Oil and Gas,2021,33(1):166-176.

[2] 刘统亮,刘孔忠,杜宇成,等.深海安装工况下水下采油树鹅脖连接器安全性能分析[J].中国海上油气,2022,34(4):242-252.

Liu T L，Liu K Z，Du Y C，et al. Safety performance analysis of subsea christmas tree gooseneck connectors under installation conditions in deepwater[J]. China Offshore Oil and Gas,2022,34(4):242-252.

[3] 刘孔忠,刘统亮,何恩,等.深海多工况载荷作用下软管连接器结构强度分析[J].力学与实践,2022,44(5):1055-1065.

Liu K Z，Liu T L，He E，et al. Structural strength analysis of flexible flowline connector under multi-load in deepwater [J]. Mechanics in Engineering，2022，44(5): 1055-1065.

[4] 戚蒿,周声结,杨阳,等.化学成分对深水管道连接器A694 F65钢冲洗压力帽锻件力学性能的影响[J].理化检验-物理分册,2022,58(3):18-22.

Qi H，Zhou S J，Yang Y，et al. Effect of chemical composition on mechanical properties of A694 F65 steel flushing pressure cap forging of deep water pipeline connector[J]. Physical Testing and Chemical Analysis: Part A: Physical Testing，2022，58(3): 18-22.

[5] 蒋中华.厚壁低合金钢锻件冲击功波动机制及控制方法研究[D].合肥：中国科学技术大学,2019.

Jiang Z H. Investigation on Mechanism and Control Methods of Impact Energy Fluctuation of Low Alloy Steels Used for Heavy Wall Forgings[D]. Hefei: University of Science and Technology of China，2019.

[6] 黄鑫,吴君三,马苏,等.F22阀体锻件超声探伤不合格原因的分析[J].热加工工艺,2021,50(19):156-158.

Huang X，Wu J S，Ma S，et al. Analysis on causes of non-conformance of ultrasonic flaw detection for F22 valve body forgings [J]. Hot Working Technology，2021，50(19): 156-158.

[7] DNVGL-RP-0034-2015，Steel forgings for subsea applications [S].

[8] ASTM A788-10，Standard specification for steel forgings，general requirement [S].

[9] API RP 6HT-2013，Heat treatment and testing of carbon and low alloy steel large cross section and critical section components [S].

[10]方旭升,汪盼盼,奚涛涛,等.大锻件用25Cr2Ni4MoV钢镦粗与拔长工艺分析[J].塑性工程学报,2022,29(8):47-55.

Fang X S，Wang P P，Xi T T，et al. Analysis on upsetting and stretching process of 25Cr2Ni4MoV steel for heavy forgings[J]. Journal of Plasticity Engineering，2022，29(8): 47-55.

[11]戚蒿,葛辉,周勇,等.厚壁盲孔深水管道连接器锻件材料均质化工艺开发[J].石油化工设备,2021,50(6):59-63.

Qi H，Ge H，Zhou Y，et al. Homogenization technology development for heavy wall and blind hole deep water pipeline connector forging material [J]. Petro-Chemical Equipment，2021，50(6): 59-63.

[12]李靖南,董瑞峰,陈子帅,等.梯度加热工艺对自由锻GH4720Li高温合金成形性能的影响[J].稀有金属,2022,46(2):162-168.

Li J N，Dong R F，Chen Z S，et al. Formability of free forging GH4720Li superalloy with different grandient heating process [J]. Chinese Journal of Rare Metals，2022，46(2):162-168.

[13]万明珍,朱乾皓,吴剑,等.超大厚壁法兰锻件成形工艺的研发[J].热加工工艺,2020,49(5):123-125.

Wang M Z，Zhu Q H，Wu J，et al. Research and development of forming process for super heavy flange forgings with thick wall [J]. Hot Working Technology，2020，49(5): 123-125.

[14]ASTM A694-16，Standard specification for carbon and alloy steel forgings for pipe flanges，fittings，valves，and parts for high-pressure transmission service[S].

[15]ASTM A370-17，Standard test methods and definitions for mechanical testing of steel products [S].

[16]ASTM E45-13，Standard test methods for determining the inclusion content of steel [S].

[17]ASTM E407-07，Standard practice for microetching metals and alloys [S].

[18]ASTM E112-13，Standard test methods for determining average grain size [S].

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