70℃低温用09MnNiD钢Φ219 mm×20 mm无缝管生产实践

按照20 t EAF→LF+VD→模铸3t钢锭→轧制Φ270 mm圆钢→斜轧穿孔→CPE轧管→在线常化工艺流程,生产 Φ219 mm×20 mm 09MnNiD钢无缝管(/％:0.07～0.10C,0.25～0.35Si,1.35～1.40Mn,0.49～0.51Ni,0.020～0.035Al,≤0.02Nb,≤0.015P,≤0.006S).通过控制EAF终点C≤0.04％和P≤0.008％,LF精炼S≤0.005％,VD≤67Pa,≥15 min,模铸过热度≤45℃,热轧后荒管冷却速度30～70℃/min,钢管常化温度910℃,开发了Φ219 mm×20 mm钢管.测试结果表明:生产的钢...

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Published in特殊钢 Vol. 43; no. 4; pp. 66 - 69
Main Authors 张银桥, 黎福华, 孔繁革, 潘先明, 朱志宝, 李勇, 李海松
Format Journal Article
LanguageChinese
Published 高品质特殊钢湖北省重点实验室,黄石435001 2022
大冶特殊钢有限公司钢管产品研究所,黄石435001
Subjects
09MnNiD钢
70
晶粒细化
Φ219 mm × 20 mm无缝管在线常化
Online AccessGet full text
ISSN1003-8620
DOI10.3969/j.issn.1003-8620.2022.04.016

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Abstract 按照20 t EAF→LF+VD→模铸3t钢锭→轧制Φ270 mm圆钢→斜轧穿孔→CPE轧管→在线常化工艺流程,生产 Φ219 mm×20 mm 09MnNiD钢无缝管(/％:0.07～0.10C,0.25～0.35Si,1.35～1.40Mn,0.49～0.51Ni,0.020～0.035Al,≤0.02Nb,≤0.015P,≤0.006S).通过控制EAF终点C≤0.04％和P≤0.008％,LF精炼S≤0.005％,VD≤67Pa,≥15 min,模铸过热度≤45℃,热轧后荒管冷却速度30～70℃/min,钢管常化温度910℃,开发了Φ219 mm×20 mm钢管.测试结果表明:生产的钢管显微组织为F+P,晶粒度10级,-70℃冲击功KV2≥275 J,抗拉强度503～508 MPa,屈服强度354～356 MPa,以及其化学成分、非金属夹杂物、无损检测均满足GB 150.2-2011标准要求.
AbstractList 按照20 t EAF→LF+VD→模铸3t钢锭→轧制Φ270 mm圆钢→斜轧穿孔→CPE轧管→在线常化工艺流程,生产 Φ219 mm×20 mm 09MnNiD钢无缝管(/％:0.07～0.10C,0.25～0.35Si,1.35～1.40Mn,0.49～0.51Ni,0.020～0.035Al,≤0.02Nb,≤0.015P,≤0.006S).通过控制EAF终点C≤0.04％和P≤0.008％,LF精炼S≤0.005％,VD≤67Pa,≥15 min,模铸过热度≤45℃,热轧后荒管冷却速度30～70℃/min,钢管常化温度910℃,开发了Φ219 mm×20 mm钢管.测试结果表明:生产的钢管显微组织为F+P,晶粒度10级,-70℃冲击功KV2≥275 J,抗拉强度503～508 MPa,屈服强度354～356 MPa,以及其化学成分、非金属夹杂物、无损检测均满足GB 150.2-2011标准要求.
Author 潘先明
李海松
李勇
张银桥
朱志宝
孔繁革
黎福华
AuthorAffiliation 大冶特殊钢有限公司钢管产品研究所,黄石435001;高品质特殊钢湖北省重点实验室,黄石435001
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Author_FL ZHANG Yinqiao
KONG Fange
ZHU Zhibao
PAN Xianming
LI Haisong
LI Yong
LI Fuhua
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DocumentTitle_FL Production Practice of 09 MnNiD Steel Φ219 mm × 20 mm Seamless Tube for -70 ℃ Low Temperature and Cryogenic Service
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Keywords 09MnNiD钢
70
晶粒细化
Φ219 mm × 20 mm无缝管在线常化
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PublicationTitle 特殊钢
PublicationTitle_FL Special Steel
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Publisher 高品质特殊钢湖北省重点实验室,黄石435001
大冶特殊钢有限公司钢管产品研究所,黄石435001
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Title 70℃低温用09MnNiD钢Φ219 mm×20 mm无缝管生产实践
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