超级双相不锈钢S32750板材的研制及在煤调湿干燥机中的应用  

Developing of S32750 Duplex Stainless Steel Plate and Application in Coking Coal Moisture (CMC) Drier

作　　者：孙晓刚[1] 李国平[1,2] 

机构地区：[1]太原钢铁(集团)有限公司,山西太原030003 [2]先进不锈钢材料国家重点实验室,山西太原030003

出　　处：《压力容器》2013年第6期75-79,共5页Pressure Vessel Technology

基　　金：国家科技支撑计划(2012BAE04B01)

摘　　要：超级双相不锈钢S32750由于高Cr、高Mo和高N(0.24%～0.32%)的成分设计,使其较2205具有更高的强度、更好的耐点蚀、耐应力腐蚀和焊接性能。通过对冶炼过程氮气合金化控N、热加工塑性变形、热处理防止σ相析出等关键工艺技术的研究,最终研制成功具有优良使用性能的不锈钢板材,满足了炼焦行业煤调湿(CMC)干燥机的制作需求。Super-duplex stainless steel S32750 has the characteristics of composition,high Cr,Mo and high N（0.24% ～ 0.32%）.Comparing with 2205,it has higher strength,better pitting and stress corrosion resistance,and super weldability.The key technologies,such as controlling alloy element nitrogen in smelting,learning hot deformation behaviour and preventing σ phase precipitation in heat treatment process were investigated,so the stainless steel plate was successfully developed.The plate has super usability and can satisfy the manufacture requirements of coking coal moisture（CMC） drier.

关 键 词：超级双相不锈钢 工艺研究 煤调湿 应用 

分 类 号：TH142.2[一般工业技术—材料科学与工程] TG156.94[机械工程—机械制造及自动化]