厚壁盲孔深水管道连接器锻件材料均质化工艺开发  

Homogenization Technology Development for Heavy Wall and Blind Hole Deep Water Pipeline Connector Forging Material

作　　者：戚蒿 葛辉 周勇 魏行超 杨阳 QI Hao;GE Hui;ZHOU Yong;WEI Xing-chao;YANG Yang(CNOOC China Ltd.Hainan Branch,Haikou 570311,China;LYGM Subsea Oil Equipment Tech Co.Ltd.,Suzhou 215600,China;CNOOC(Tianjin)Pipeline Engineering Technology Co.Ltd.,Tianjin 300452,China)

机构地区：[1]中海石油(中国)有限公司海南分公司,海南海口570311 [2]苏州雷格姆海洋石油设备科技有限公司,江苏苏州215600 [3]中海油(天津)管道工程技术有限公司,天津300452

出　　处：《石油化工设备》2021年第6期59-63,共5页Petro-Chemical Equipment

摘　　要：国内某深水气田管道连接器受复杂工作载荷和极端环境载荷的耦合作用,对连接器锻件材料的力学性能及其稳定性要求极高。对于深水管道连接器长期压力帽采用的壁厚较大且内部流道复杂或盲孔设计的ASTM A694 F65 SFC3级锻件材料,采用常规工艺热处理后,测试发现材料的低温冲击韧性较好,但屈服强度低于相关标准要求。优化了ASTM A694 F65 SFC3级锻件材料各合金元素化学成分配比和热处理工艺参数,研制并应用新型淬火冷却工装对材料进行热处理。测试结果表明,工艺优化后ASTM A694 F65 SFC3级锻件最大壁厚处的全截面试样的屈服强度和低温冲击韧性稳定,且满足相关标准规范的性能要求。Pipeline connectors of a deepwater gas field in China are coupling affected by complex working loads and extreme environmental loads,which require high mechanical properties and stability of connector forging materials.For ASTM A694 F65 SFC3 forgings with heavy wall and complex internal flow passage or blind hole design,through the conventional heat treatment process,it was found that the low-temperature impact toughness of the materials was satisfied,but for yield strength,it was difficult to reach the standard minimum requirement.Aimed at the yield strength problem of heavy wall and blind hole forgings used for long-term pressure caps of deepwater pipelines,the chemical composition of the alloying element and heat treatment process parameters were optimized and one set of quenching and cooling tooling was developed and applied.The result of the experiment showed that the yield strength and low-temperature impact toughness of the full-section specimens at the maximum wall thickness section of the forging after the process optimization were stable and able to meet the requirements of the standard.

关 键 词：管道连接器 压力帽 锻件 热处理 工艺 开发 

分 类 号：TQ055.8[化学工程]