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油井管用特殊ねじ高生産性製造技術の開発

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川崎製鉄技報

KAWASAKI STEEL GIHO Vol.29 (1997) No.2

油井管用特殊ねじ高生産性製造技術の開発

Development of Highly Efficient Manufacturing Technology of Premium Joint for Oil Country Tubular Goods

島本 健(Ken Shimamoto) 高野 順(Jun Takano) 高橋 一成(Kazunari Takahashi) 要旨 : 近年の油井用 13%Cr シームレス鋼管の使用量増加に伴い,耐ゴーリング性,耐リーク性 に優れた特殊ねじ『FOX ィ』の需要が増加している。そのため,FOX の生産能力増強を目 的として,川崎製鉄知多製造所に高生産性および高品質を有する新ねじ切りラインを建設 し,1994 年 10 月に営業生産を開始した。この建設において,機械剛性および切粉排出性 を大幅に改善した工具回転型ねじ切機および全自動の光学式非接触型ねじ寸法測定システ ムを開発し,世界初の実用化に成功した。 Synopsis :

Demand for the premium joint, "FOX(R)", which is superior in antigalling and antileak performance, has increased with the increase of 13%Cr steel seamless pipe for oil country tubular goods. Therefore, in order to expand manufacturing capacity of FOX, a new threading line of high productivity with superior product quality was built and commenced commercial production in October 1994. Along with this construction, developments of tool-rotating type threading machines with remarkable improvements in machine rigidity and chip disposability and fully automated optical-gauging systems were achieved, and resulted in use for actual manufacturing for the first time in the world.

(c)JFE Steel Corporation, 2003

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