“熱擠壓+冷軋”制造022Cr25Ni7Mo4N無縫鋼管的工藝技術研究

Study on "Hot Extrusion + Cold Pilgering" Manufacturing Process for 022Cr25Ni7Mo4N Seamless Steel Pipe

摘要: 超級雙相不銹鋼022Cr25Ni7Mo4N無縫鋼管長期依賴進口,為實現(xiàn)此類鋼管國產(chǎn)化的目標,浙江久立特材科技股份有限公司開發(fā)出“熱擠壓+冷軋”工藝技術,并對該產(chǎn)品的熱加工、冷加工、固溶熱處理工藝進行了研究。經(jīng)過多年努力,生產(chǎn)出各項性能均符合相關技術要求的022Cr25Ni7Mo4N無縫鋼管,在國產(chǎn)化方面邁出了成功的一步。

Abstract: Supply of the 022Cr25Ni7Mo4N super duplex stainless steel seamless pipes has depended on import for so long a time. For localization of production of such pipes,the “Hot extrusion + Cold pilgering” manufacturing process is developed by Zhejiang JIULI Hi-tech Metals Co.,Ltd. Moreover,certain techniques for further processing the pipes are also studied,including hot working,cold working and solid solution treatment,etc. Owing to years-long efforts,the company has been capable of producing 022Cr25Ni7Mo4N pipes with all the properties in conformity with applicable technical specification,and made contribution to the localization of production of the pipes.