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    建筑用耐火無縫鋼管的研制與開發(fā)

    R ＆ D of Fire-resistant Seamless Steel Pipe for Building Service

    • 摘要: 目前國內(nèi)對建筑用耐火無縫鋼管的研發(fā)處于空白狀態(tài)。介紹了攀鋼集團成都鋼釩有限公司對建筑用耐火無縫鋼管的研發(fā)情況:在低合金碳錳鋼的基礎(chǔ)上添加微合金元素,通過微合金元素在高溫下的固溶強化和析出,控制終軋溫度,得到鐵素體+珠光體+粒狀貝氏體的耐高溫組織,從而試制出性能優(yōu)良的建筑用耐火無縫鋼管。

       

      Abstract: At present R & D of the fire-resistant seamless steel pipe is almost a gap to be filled.Elaborated in the article is the efforts in R & D of such pipe as made by Pangang Group Chengdu Steel and Vanadium Co.,Ltd.The research involves such an approach that relevant micro-alloy elements are added into the low carbon-manganese steel,and then solid solution strengthened and segregated under high temperature and well-controlled finalrolling temperature to form the ferrite+pearlite+granular bainite hi-temperature resistant structure.As a result,the fire-resistant seamless steel pipe for building service with satisfactory properties is successfully trial-produced.

       

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