钢管2026，Vol.55Issue(1)：44-48,5.DOI:10.19938/j.steelpipe.1001-2311.2026.1.44.48
新型节镍2304双相不锈钢无缝管的热穿孔工艺优化
Optimization of Hotpiercing Process for New Nickel-saving 2304 Duplex Stainless Steel Seamless Tube
邓新吉 1王婀娜 2田长君 1吴志伟 2李源1
作者信息
- 1. 攀钢集团长城特殊钢有限公司,四川 绵阳 621000
- 2. 成都先进金属材料产业技术研究院股份有限公司,四川 成都 610300||海洋装备用金属材料及其应用国家重点实验室,辽宁 鞍山 114009
- 折叠
摘要
Abstract
Studied here in the article is the hotpiercing process for the new nickel-saving 2304 duplex stainless steel by means of thermodynamic calculations,high temperature plasticity test,microstructural characterization,and industrial trial,etc.Resulting in optimized hotpiercing process parameters.The results demonstrate that a safe hot working range is 1 050℃and 1 150℃,within which the microstructure primarily consists of austenite and ferrite,thereby avoiding the precipitation of brittle phases such as M2(C,N)and M23C6.In the range of 1 050～1 100℃,austenite is the dominant phase,and dynamic re-crystallization leads to excellent hot plasticity.Between 1 120℃and 1 150℃,the ferrite fraction increases,and plasticity is governed by dynamic recovery mechanism.The addition of vanadium promotes the formation of V(C,N)precipitated phase,which refines the grain size,and suppresses nickel diffusion at high temperatures,thus stabilizing the phase ratio and achieving a refined grain size.The shell made via industrial trial production possesses exce-llent surface quality and homogeneous microstructure,meeting all the requirements for downstream processing.关键词
2304双相不锈钢/无缝钢管/热穿孔Key words
2304 duplex stainless steel/seamless steel pipe/hotpiercing process引用本文复制引用
邓新吉,王婀娜,田长君,吴志伟,李源..新型节镍2304双相不锈钢无缝管的热穿孔工艺优化[J].钢管,2026,55(1):44-48,5.
