西气东输管道工程用高强度感应加热弯管的选材研究
Study on Material Selection for High Strength Induction Heating Bend Pipe Used in West to East Gas Pipeline Project
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- DOI:
- 作者:
- 刘迎来, 李平全
LIU Ying-lai, LI Ping-quan
- 作者单位:
- 中国石油天然气管材研究所, 陕西西安 710065
Pipe Goods Research Institute, CNPC, Xi'an 710065, China
- 关键词:
- 长输管道;X70钢;感应加热弯管;选材;淬透性;强度;韧性;配合
long distance pipeline;steel X70;induction heating bend pipe;material selection;quenching degree;strength;ductility;match
- 摘要:
- 结合西气东输工程用弯管国产化研究项目,选用不同成分的X70微合金控轧钢进行试验室热模拟和工厂弯管热煨制试验,对X70控轧钢二次加热后强韧性的影响因素进行了研究。提出了在碳当量一定的条件下,调整钢中C、Mn、Mo等强淬透性合金元素的比例,以利于弯管的成型;制定出了油气输送管道工程用X70感应加热弯管选材技术条件。按照此条件选用与干线管化学成分相近的含Nb低碳微合金控轧钢,研制生产出了可焊性和综合力学性能与干线管强度和韧性相匹配的X70大口径弯管,该研究成果在西气东输工程和陕京二线工程中得到直接应用。
Associated with the research subject of nationalization of bend pipe used in West to East Gas Pipeline Project the thermal simulation experiment in laboratory and heating bend pipe experiment in factory are carried out using the control rolled micro-alloy steel X70 of different ingredients. The high ductility influence factors of steel X70 after the secondary heating is studied. It is pointed out that adjusting the proportions of high quenching degree alloy elements in the steel such as CMnMo with a certain amount of carbon equivalent the material selection for mother pipe can be widen. The material selection technical terms of induction heating bend pipe are established. According to these technical terms selecting low carbon micro-alloy control rolled steel containing Nb which chemical composition is similar to the trunk pipe the steel X70 large diameter bend pipes have been fabricated which weldability and synthetic mechanical performances match with the strength and ductility of the trunk pipe. The achievements are applied to West to East Gas Pipeline Project and the Second Shan-Jing Gas Pipeline Project and satisfy the engineering demands.2005,2(2): 52-55 收稿日期：2004-8-5分类号：TE973.3基金项目：中国石油天然气集团公司(2001411-5)作者简介：刘迎来(1964-),男,陕西歧山人,高级工程师,1989年毕业于兰州大学物理系金属材料专业,主要从事石油天然气输送管道工程用高强度管件材料研究、新产品工艺开发及技术监督工作.参考文献：
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