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    軋管用空心鋼錠生產(chǎn)工藝的研究與實踐

    Research on and Application of Newly-developed Manufacturing Process for Hollow Ingot for Pipe-rolling Purpose

    • 摘要: 介紹了軋管用空心鋼錠生產(chǎn)的難點與關(guān)鍵技術(shù),空心鋼錠澆鑄模芯的材質(zhì)、結(jié)構(gòu),模芯定位裝置以及空心鋼錠的澆鑄工藝。生產(chǎn)的空心鋼錠質(zhì)量滿足軋管用空心管坯的高質(zhì)量要求;其高合金鋼空心鋼錠直接軋管新工藝,特別適用于軋制多品種、多規(guī)格、高品質(zhì)的高合金無縫鋼管,可減少用實心鋼錠(鍛坯)軋管的鏜孔工序,提高產(chǎn)品金屬收得率,降低生產(chǎn)成本。

       

      Abstract: Elaborated here in the article are the difficulties and critical technical issues as encountered with in manufacturing of the hollow ingot for pipe-rolling purpose, involving the material and structure of the mould core, the positioning device for the mould core, and the casting process for the hollow ingot. The quality of hollow ingots as produced with the new process is satisfactory to the stringent quality requirements for hollow stocks for rolled pipes. The new pipe rolling process that resulted from the said ingot manufacturing process, and involves direct use of hi-alloy steel hollow ingots is particularly suitable for producing hi-alloy steel seamless pipes with high quality, a wide size range, and a great variety of types. Thanks to the hollow ingot process, metal yield will be enhanced, and thus the operation costs reduced due to the fact that the boring process which is a must for solid ingot(or forged bloom)prior to pipe rolling is eliminated.

       

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