Method for producing car extra-deep drawing steel through thin-slab continuous casting machine
The invention provides a method for producing car extra-deep drawing steel through a thin-slab continuous casting machine. The method comprises following steps of molten iron pretreatment, converter steel making, LF refining, RH furnace vacuum refining and thin-slab continuous casting; the converter...
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| creator | LI ZHIJIAN MIAO ZHONGYI ZHANG WENYING YANG JIE BIAN RULIN |
| description | The invention provides a method for producing car extra-deep drawing steel through a thin-slab continuous casting machine. The method comprises following steps of molten iron pretreatment, converter steel making, LF refining, RH furnace vacuum refining and thin-slab continuous casting; the converter end slag basicity is controlled to 3.5 to 4, the weight percent of FeO + MnO in the LF steel slag is controlled to be smaller than 3%, the molten steel temperature is controlled not to be lower than 1680 DEG C before LF furnace outputting, a calcium ferrite line is fed into molten steel in the RH furnace, argon blowing weak stirring is carried out, the weak stirring time is not less than 8 min, finally, a continuous casting machine with the section specification being 135 mm*1500 mm is adoptedto continuously cast the thin slab, during continuous casting, the slab pulling speed ranges from 0.8 m/min to 1.3 m/min. Protection pouring is adopted, and the problem that in the existing thin-slabcontinuous casting process |
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The method comprises following steps of molten iron pretreatment, converter steel making, LF refining, RH furnace vacuum refining and thin-slab continuous casting; the converter end slag basicity is controlled to 3.5 to 4, the weight percent of FeO + MnO in the LF steel slag is controlled to be smaller than 3%, the molten steel temperature is controlled not to be lower than 1680 DEG C before LF furnace outputting, a calcium ferrite line is fed into molten steel in the RH furnace, argon blowing weak stirring is carried out, the weak stirring time is not less than 8 min, finally, a continuous casting machine with the section specification being 135 mm*1500 mm is adoptedto continuously cast the thin slab, during continuous casting, the slab pulling speed ranges from 0.8 m/min to 1.3 m/min. Protection pouring is adopted, and the problem that in the existing thin-slabcontinuous casting process</description><language>chi ; eng</language><subject>CASTING ; CASTING OF METALS ; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES ; CHEMISTRY ; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC ; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS ; METALLURGY ; METALLURGY OF IRON ; PERFORMING OPERATIONS ; POWDER METALLURGY ; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL ; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE ; TRANSPORTING ; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS</subject><creationdate>2018</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180511&DB=EPODOC&CC=CN&NR=108018403A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180511&DB=EPODOC&CC=CN&NR=108018403A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>LI ZHIJIAN</creatorcontrib><creatorcontrib>MIAO ZHONGYI</creatorcontrib><creatorcontrib>ZHANG WENYING</creatorcontrib><creatorcontrib>YANG JIE</creatorcontrib><creatorcontrib>BIAN RULIN</creatorcontrib><title>Method for producing car extra-deep drawing steel through thin-slab continuous casting machine</title><description>The invention provides a method for producing car extra-deep drawing steel through a thin-slab continuous casting machine. The method comprises following steps of molten iron pretreatment, converter steel making, LF refining, RH furnace vacuum refining and thin-slab continuous casting; the converter end slag basicity is controlled to 3.5 to 4, the weight percent of FeO + MnO in the LF steel slag is controlled to be smaller than 3%, the molten steel temperature is controlled not to be lower than 1680 DEG C before LF furnace outputting, a calcium ferrite line is fed into molten steel in the RH furnace, argon blowing weak stirring is carried out, the weak stirring time is not less than 8 min, finally, a continuous casting machine with the section specification being 135 mm*1500 mm is adoptedto continuously cast the thin slab, during continuous casting, the slab pulling speed ranges from 0.8 m/min to 1.3 m/min. 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The method comprises following steps of molten iron pretreatment, converter steel making, LF refining, RH furnace vacuum refining and thin-slab continuous casting; the converter end slag basicity is controlled to 3.5 to 4, the weight percent of FeO + MnO in the LF steel slag is controlled to be smaller than 3%, the molten steel temperature is controlled not to be lower than 1680 DEG C before LF furnace outputting, a calcium ferrite line is fed into molten steel in the RH furnace, argon blowing weak stirring is carried out, the weak stirring time is not less than 8 min, finally, a continuous casting machine with the section specification being 135 mm*1500 mm is adoptedto continuously cast the thin slab, during continuous casting, the slab pulling speed ranges from 0.8 m/min to 1.3 m/min. Protection pouring is adopted, and the problem that in the existing thin-slabcontinuous casting process</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
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| subjects | CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY METALLURGY OF IRON PERFORMING OPERATIONS POWDER METALLURGY PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS |
| title | Method for producing car extra-deep drawing steel through thin-slab continuous casting machine |
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