Low-relaxation high-strength prestressed steel and production method thereof
The invention discloses low-relaxation high-strength prestressed steel which comprises the following components in percentage by weight: 0.29 to 0.36 percent of C, 0.80 to 1.20 percent of Si, 0.60 to 0.80 percent of Mn, 0.10 to 0.15 percent of Cr, 0.010 to 0.020 percent of V, less than or equal to 0...
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| creator | ZHANG XIANZHONG LU XIUYU LIAO YANGBIAO ZHENG CHUANYU XU ZHIDONG XIA YANHUA ZHANG FAN |
| description | The invention discloses low-relaxation high-strength prestressed steel which comprises the following components in percentage by weight: 0.29 to 0.36 percent of C, 0.80 to 1.20 percent of Si, 0.60 to 0.80 percent of Mn, 0.10 to 0.15 percent of Cr, 0.010 to 0.020 percent of V, less than or equal to 0.020 percent of P, less than or equal to 0.015 percent of S and the balance of iron and inevitable impurities. The production method comprises the following steps: pre-desulfurizing blast furnace molten iron by adopting a magnesium spraying desulfurization method, smelting in a top-bottom combined blown converter, and deoxidizing and alloying in a tapping process after smelting is completed; refining in an LF furnace, wherein the LF furnace adopts a whole-course argon bottom blowing mode; active lime and fluorite are added in the refining process to prepare refining slag; the LF refining time is not less than 40 minutes; carrying out soft argon blowing on the molten steel after LF; argon sealing protection pouring |
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The production method comprises the following steps: pre-desulfurizing blast furnace molten iron by adopting a magnesium spraying desulfurization method, smelting in a top-bottom combined blown converter, and deoxidizing and alloying in a tapping process after smelting is completed; refining in an LF furnace, wherein the LF furnace adopts a whole-course argon bottom blowing mode; active lime and fluorite are added in the refining process to prepare refining slag; the LF refining time is not less than 40 minutes; carrying out soft argon blowing on the molten steel after LF; argon sealing protection pouring</description><language>chi ; eng</language><subject>ALLOYS ; CASTING ; CASTING OF METALS ; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES ; CHEMISTRY ; FERROUS OR NON-FERROUS ALLOYS ; METALLURGY ; METALLURGY OF IRON ; PERFORMING OPERATIONS ; POWDER METALLURGY ; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL ; TRANSPORTING ; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>2023</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=20230530&DB=EPODOC&CC=CN&NR=116179963A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230530&DB=EPODOC&CC=CN&NR=116179963A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ZHANG XIANZHONG</creatorcontrib><creatorcontrib>LU XIUYU</creatorcontrib><creatorcontrib>LIAO YANGBIAO</creatorcontrib><creatorcontrib>ZHENG CHUANYU</creatorcontrib><creatorcontrib>XU ZHIDONG</creatorcontrib><creatorcontrib>XIA YANHUA</creatorcontrib><creatorcontrib>ZHANG FAN</creatorcontrib><title>Low-relaxation high-strength prestressed steel and production method thereof</title><description>The invention discloses low-relaxation high-strength prestressed steel which comprises the following components in percentage by weight: 0.29 to 0.36 percent of C, 0.80 to 1.20 percent of Si, 0.60 to 0.80 percent of Mn, 0.10 to 0.15 percent of Cr, 0.010 to 0.020 percent of V, less than or equal to 0.020 percent of P, less than or equal to 0.015 percent of S and the balance of iron and inevitable impurities. The production method comprises the following steps: pre-desulfurizing blast furnace molten iron by adopting a magnesium spraying desulfurization method, smelting in a top-bottom combined blown converter, and deoxidizing and alloying in a tapping process after smelting is completed; refining in an LF furnace, wherein the LF furnace adopts a whole-course argon bottom blowing mode; active lime and fluorite are added in the refining process to prepare refining slag; the LF refining time is not less than 40 minutes; carrying out soft argon blowing on the molten steel after LF; argon sealing protection pouring</description><subject>ALLOYS</subject><subject>CASTING</subject><subject>CASTING OF METALS</subject><subject>CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES</subject><subject>CHEMISTRY</subject><subject>FERROUS OR NON-FERROUS ALLOYS</subject><subject>METALLURGY</subject><subject>METALLURGY OF IRON</subject><subject>PERFORMING OPERATIONS</subject><subject>POWDER METALLURGY</subject><subject>PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL</subject><subject>TRANSPORTING</subject><subject>TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS</subject><subject>TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2023</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZPDxyS_XLUrNSaxILMnMz1PIyEzP0C0uKUrNSy_JUCgoSgWxi4tTUxSKS1JTcxQS81KAovkppclg5bmpJRn5KQolGalFqflpPAysaYk5xam8UJqbQdHNNcTZQze1ID8-tbggMTk1L7Uk3tnP0NDM0NzS0szY0ZgYNQAF7za0</recordid><startdate>20230530</startdate><enddate>20230530</enddate><creator>ZHANG XIANZHONG</creator><creator>LU XIUYU</creator><creator>LIAO YANGBIAO</creator><creator>ZHENG CHUANYU</creator><creator>XU ZHIDONG</creator><creator>XIA YANHUA</creator><creator>ZHANG FAN</creator><scope>EVB</scope></search><sort><creationdate>20230530</creationdate><title>Low-relaxation high-strength prestressed steel and production method thereof</title><author>ZHANG XIANZHONG ; LU XIUYU ; LIAO YANGBIAO ; ZHENG CHUANYU ; XU ZHIDONG ; XIA YANHUA ; ZHANG FAN</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN116179963A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2023</creationdate><topic>ALLOYS</topic><topic>CASTING</topic><topic>CASTING OF METALS</topic><topic>CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES</topic><topic>CHEMISTRY</topic><topic>FERROUS OR NON-FERROUS ALLOYS</topic><topic>METALLURGY</topic><topic>METALLURGY OF IRON</topic><topic>PERFORMING OPERATIONS</topic><topic>POWDER METALLURGY</topic><topic>PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL</topic><topic>TRANSPORTING</topic><topic>TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS</topic><topic>TREATMENT OF ALLOYS OR NON-FERROUS METALS</topic><toplevel>online_resources</toplevel><creatorcontrib>ZHANG XIANZHONG</creatorcontrib><creatorcontrib>LU XIUYU</creatorcontrib><creatorcontrib>LIAO YANGBIAO</creatorcontrib><creatorcontrib>ZHENG CHUANYU</creatorcontrib><creatorcontrib>XU ZHIDONG</creatorcontrib><creatorcontrib>XIA YANHUA</creatorcontrib><creatorcontrib>ZHANG FAN</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ZHANG XIANZHONG</au><au>LU XIUYU</au><au>LIAO YANGBIAO</au><au>ZHENG CHUANYU</au><au>XU ZHIDONG</au><au>XIA YANHUA</au><au>ZHANG FAN</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Low-relaxation high-strength prestressed steel and production method thereof</title><date>2023-05-30</date><risdate>2023</risdate><abstract>The invention discloses low-relaxation high-strength prestressed steel which comprises the following components in percentage by weight: 0.29 to 0.36 percent of C, 0.80 to 1.20 percent of Si, 0.60 to 0.80 percent of Mn, 0.10 to 0.15 percent of Cr, 0.010 to 0.020 percent of V, less than or equal to 0.020 percent of P, less than or equal to 0.015 percent of S and the balance of iron and inevitable impurities. The production method comprises the following steps: pre-desulfurizing blast furnace molten iron by adopting a magnesium spraying desulfurization method, smelting in a top-bottom combined blown converter, and deoxidizing and alloying in a tapping process after smelting is completed; refining in an LF furnace, wherein the LF furnace adopts a whole-course argon bottom blowing mode; active lime and fluorite are added in the refining process to prepare refining slag; the LF refining time is not less than 40 minutes; carrying out soft argon blowing on the molten steel after LF; argon sealing protection pouring</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
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| subjects | ALLOYS CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY METALLURGY OF IRON PERFORMING OPERATIONS POWDER METALLURGY PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TRANSPORTING TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | Low-relaxation high-strength prestressed steel and production method thereof |
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