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    Φ140 mm浮動芯棒連軋管機(jī)組再認(rèn)識

    Further Discussion on Φ140 mm Floating Mandrel Mill Operation Line

    • 摘要: 簡述了寶山鋼鐵股份有限公司Φ140 mm浮動芯棒連軋管機(jī)組的工藝流程、生產(chǎn)效率及生產(chǎn)品種調(diào)整情況，介紹了包括浮動芯棒連軋管機(jī)“竹節(jié)”控制、張力減徑機(jī)CEC控制和多邊化孔型、穿孔機(jī)改造、穿孔管壁厚偏心率控制效果等在內(nèi)的重大工藝技術(shù)創(chuàng)新與發(fā)展。通過品種調(diào)整、工藝技術(shù)創(chuàng)新和長期數(shù)據(jù)積累，始終保持了該機(jī)組優(yōu)秀的生產(chǎn)業(yè)績。對于Φ180 mm以下規(guī)格連軋管機(jī)組，Φ140 mm浮動芯棒連軋管機(jī)組仍然是具有競爭力的機(jī)組。

       

      Abstract: Briefed in the paper are the main aspects of the Φ140 mm floating mandrel mill located at Baoshan Iron & Steel Co., Ltd., including the manufacturing process flow, production efficiency and adjustment of the product category, etc.Also described here are some important technological innovations and development related to the mill operation line, involving"bulging"control for the floating mandrel mill proper, the CEC control and the polygonization groove of the stretch reducing mill, modification of the piercing mill, and W.T.eccentricity ratio control of the pierced shell, etc.The mill operation line is always maintained with excellent production performance owing to proper product category adjustment, technological innovation and long-term acuminated data package.Up to now, among the domestic mandrel mill plants engaged in producing pipes under Φ180 mm, the said Φ140 mm floating mandrel mill line still remains rather competitive.

       

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