李周波,芦琳,毕宗岳,张峰,黄晓江,刘亚明

• 1:国家石油天然气管材工程技术研究中心
• 2:宝鸡石油钢管有限责任公司

摘要(Abstract)：

通过中碳低合金的思路设计了Q125钢级SEW石油套管用钢,同时研究了调质热处理工艺对其组织和力学性能的影响。结果表明:采用880℃淬火+540℃回火调质处理后,SEW Q125石油套管具有更好的强韧性配合,屈服强度975 MPa,抗拉强度1030 MPa,伸长率23%,0℃母材纵向冲击功不低于150 J,母材横向冲击功不低于120 J,焊缝冲击功不低于100 J,抗外压挤毁值高于标准要求30%,沟槽腐蚀性能不敏感,具有良好综合力学性能和耐蚀性。据此提出的推荐热处理工艺制度,在工业试制中应用,各项性能指标均达到API 5CT的要求。

关键词(KeyWords)： Q125石油套管;力学性能;微观组织;残余应力;沟槽腐蚀

Abstract:

Keywords:

基金项目(Foundation): 国家科技支撑计划(2011BAE25B04)

作者(Author): 李周波,芦琳,毕宗岳,张峰,黄晓江,刘亚明

DOI: 10.13289/j.issn.1009-6264.2016.05.027

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