非调质抽油杆钢ＦＴ9780要求含 0 .0 1 2 %～0 0 1 8%Ｎ ,钢材使用强度大于 60ＭＰａ。为防止白点等缺陷 ,又要求 [Ｈ]尽可能低 ,所以生产该钢有一定难度。本文介绍生产该钢的工艺实践。1　主要设备工艺该钢种由 70ｔＤＣ ＥＡＦ与 70ｔ单臂钢包炉生产 ,连铸由 4机 4流 ,断面 Non-quenched and sucker rod steel FT9780 requirements containing 0. 0 1 2% ~ 0 0 1 8% N, steel strength greater than 60MPa. In order to prevent defects such as white spots, but also [H] as low as possible, so the production of the steel has a certain degree of difficulty. This article describes the process of producing steel. 1 The main equipment technology The steel by the 70tDC EAF and 70t single-arm ladle furnace production, continuous casting 4 4 flow, section