ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2022, Vol. 43 ›› Issue (3): 30-34.

所属专题: 奥氏体不锈钢

• 工艺技术 • 上一篇    下一篇

核电用超纯316H奥氏体不锈钢锻件的质量控制

李青1,2, 崔利民1,2, 史咏鑫1,2, 胡英超1,2, 王敏1,2   

  1. 1中航上大高温合金材料股份有限公司,邢台054800;
    2河北省特种合金再生工程技术研究中心,邢台054800
  • 收稿日期:2021-09-06 出版日期:2022-06-01 发布日期:2022-06-16
  • 作者简介:李 青(1990-),女,硕士(2016年燕山大学),工程师,2013年燕山大学(本科)毕业,不锈钢的生产与研发。

Quality Control of Ultra-pure 316H Austenitic Stainless Steel Forgings for Nuclear Power

LI Qing1,2, CUI Limin1,2, SHI Yongxin1,2, HU Yingchao1,2, WANG Min1,2   

  1. 1 A vic Shangda Superalloys Company Limited, Xingtai 054800 ;
    2 Hebei Engineering Research Center for Special Alloy Regeneration, Xingtai 054800
  • Received:2021-09-06 Published:2022-06-01 Online:2022-06-16

摘要: 通过对成分计算、熔炼工艺和电渣渣系分析、均质化退火工艺试验等方法,对20 t EAF-AOD-LF-VD- Φ430 mm电极Φ 590 mm ESR锭-均质处理 Φ310 mm锻材流程生产的核电用钢超纯316H工艺进行研究。当成分 (/%)满足 0.042 - 0. 047C, ≤0. 55Si, 1.60-1. 80Mn,17.00 -17. 30Cr,12. 20 ~ 12. 40Ni,2. 50 ~ 2. 60Mo, ≤ 5 x 10-6 H,≤ 30 x 10-6 O, 0. 055 - 0. 070N 时,将 Φ430 mm 电极釆用 CaF2 : Al2O3: CaO = 60% : 30% : 10% 渣系电渣成 Φ590 mm锭,在1 200 ~ 1 250℃ 经过30 h均质化处理后,能够生产出符合标准的产品,实物夹杂物级别为A,C 0 级,B细 0.5级 B粗 0级,D1.0级,D0~0.5级,Ds (0-0.5)级;铁素体含量≤ 0.5%。

Abstract: The process of ultra - pure 316H steel for nuclear power produced by 20 t EAF-AOD-LF-VD-Φ430 mm elecrode-Φ590 mm ESR ingot-homogenizing treating-Φ310 mm forged bar flowsheet is studied by means of composition calculation ,smelting process and electroslag slag analysis, homogenization annealing process test and other methods. When the composition satisfies 0. 042% ~ 0. 047% C, ≤ 0. 55% Si, 1. 60% ~ 1. 80% Mn, 17. 00% ~ 17. 30% Cr, 12. 20% ~ 12. 40%Ni,2. 50% ~2. 60% Mo, ≤ 5 x10-6H, ≤ 30x 10-6 O,0. 055% ~0.070%N, the Φ430 mm electrode is remelted with CaF2: Al2O3: CaO =60%: 30%: 10% slag system electroslag into Φ590 mm ESR ingot, then homogenization treated at 1 200 ~ 1 250 °C for 30 h, it can produce products to meet the standards, that is inclusion rating units- A and C being 0, Bthin 0.5,Bthick being 0,Dthin 1. 0,Dthick 0 -0. 5 and Ds being (0 ~0.5) ;ferrite content ≤ 0. 5% .