塑性と加工
Online ISSN : 1882-0166
Print ISSN : 0038-1586
ISSN-L : 0038-1586
論文
強変形せん断接合法の熱間エンドレス圧延への適用
— 熱間エンドレス圧延用バー接合への
固相接合方式の適用に関する研究 第5報 —
堀井 健治舟本 孝雄芳村 泰嗣宇杉 敏裕古元 秀昭李 鍾燮
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2010 年 51 巻 588 号 p. 33-37

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The endless hot rolling concept was introduced to meet the demand for diverse hot-rolled steel sheet products produced by a process that is cost-effective compared with the conventional batch-type process. Endless rolling involves joining the head and tail ends of two bars after rough rolling. A new solid-state joining technology was proposed to instantaneously obtain a joint with high integrity using relatively simple equipment. In this report, we present the mechanism of super deformation joining (hereinafter referred to as “SDJ”) and discuss results of our evaluation of the characteristics of joints to rolling. Super deformation by shearing creates new uncontaminated joint surfaces, and a large upsetting force at the completion of joining promotes metal bonding. SDJ was applied to the joining machine of POSCO POHANG #2HOT, and the use of endless hot rolling in commercial production was started in Jan. 2007. #2HOT is now producing approximately a hundred thousand tons of coils every month by endless hot rolling owing to the stabilization of operation.

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© 2010 一般社団法人 日本塑性加工学会
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