熱軋超級雙相不銹鋼管S32750的工藝實踐

Process Practice of S32750 Hot-rolled Super Duplex Stainless Steel Pipe

摘要: 介紹了在試驗軋管機上研究熱軋生產(chǎn)S32750超級雙相不銹鋼管的工藝參數(shù)，工藝參數(shù)優(yōu)化后在大型熱連軋軋管機組上進行試生產(chǎn)。實踐證明：利用現(xiàn)有的熱連軋軋管機組可以生產(chǎn)雙相不銹鋼管，前提是要優(yōu)化管坯的加熱溫度，合理分配變形量。用熱軋方法生產(chǎn)雙相不銹鋼管，不僅可以提高成材率，還可以彌補擠壓機生產(chǎn)大直徑超長鋼管的不足。

Abstract: Elaborated in the paper are the study of the process parameters as made with the experimental pipe mill for hot-rolling of the S32750 super duplex stainless steel pipe,and the trial production activities as carried out with the large-sized hot-rolling mandrel mill with the optimized process parameters. It is proved by the practice that the existing hot-rolling mandrel mill is capable of producing the duplex stainless steel pipe,provided that the temperature for heating the billet is optimized,and the deformation amount is properly distributed. Employment of the said hot-rolling process to make the duplex stainless steel pipe will not only bring about high yield,but also cover the shortage of the extrusion process for making large-sized,extra-long steel pipe.