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

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