HIGH STRENGTH BAKE HARDENING COLD ROLLED STEEL SHEET HAVING EXCELLENT SURFACE QUALITY AND MANUFACTURING METHOD THEREOF
A high strength bake hardening cold rolled steel sheet having excellent surface quality and a manufacturing method thereof are provided to prevent surface defect from being generated by controlling dissolved organic carbon within grain with the distribution of the minute precipitate with properly co...
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| creator | KANG, DEOK GU YOON, JEONG BONG |
| description | A high strength bake hardening cold rolled steel sheet having excellent surface quality and a manufacturing method thereof are provided to prevent surface defect from being generated by controlling dissolved organic carbon within grain with the distribution of the minute precipitate with properly controlling the carbon content. A high strength bake hardening cold rolled steel sheet having excellent surface quality includes C: 0.0005-0.004 weight%, Si: 0.02-0.6 weight%, Mn: 0.2-0.8 weight%, P: 0.005-0.2 weight%, S: 0.003-0.02 weight%, Al: 0.01-0.08 weight%, N: 0.004 weight% or less, Cu: 0.005-0.2 weight%, and rest Fe and other impurity. The content of Mn, Cu, and S satisfies 5 |
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A high strength bake hardening cold rolled steel sheet having excellent surface quality includes C: 0.0005-0.004 weight%, Si: 0.02-0.6 weight%, Mn: 0.2-0.8 weight%, P: 0.005-0.2 weight%, S: 0.003-0.02 weight%, Al: 0.01-0.08 weight%, N: 0.004 weight% or less, Cu: 0.005-0.2 weight%, and rest Fe and other impurity. The content of Mn, Cu, and S satisfies 5<=0.27 *(Mn+Cu)/S<=25. The cold rolled steel comprises the precipitate selected one or more among the group consisting of MnS, CuS, and (Mn, Cu)S. The mean size of the precipitate is less than 0.2micron. The Mo 0.01-0.2% is additionally included in the steel sheet.</description><language>eng ; kor</language><subject>ALLOYS ; CHEMISTRY ; FERROUS OR NON-FERROUS ALLOYS ; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS ; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS ; METALLURGY ; METALLURGY OF IRON ; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>2009</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=20090702&DB=EPODOC&CC=KR&NR=20090072113A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20090702&DB=EPODOC&CC=KR&NR=20090072113A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KANG, DEOK GU</creatorcontrib><creatorcontrib>YOON, JEONG BONG</creatorcontrib><title>HIGH STRENGTH BAKE HARDENING COLD ROLLED STEEL SHEET HAVING EXCELLENT SURFACE QUALITY AND MANUFACTURING METHOD THEREOF</title><description>A high strength bake hardening cold rolled steel sheet having excellent surface quality and a manufacturing method thereof are provided to prevent surface defect from being generated by controlling dissolved organic carbon within grain with the distribution of the minute precipitate with properly controlling the carbon content. A high strength bake hardening cold rolled steel sheet having excellent surface quality includes C: 0.0005-0.004 weight%, Si: 0.02-0.6 weight%, Mn: 0.2-0.8 weight%, P: 0.005-0.2 weight%, S: 0.003-0.02 weight%, Al: 0.01-0.08 weight%, N: 0.004 weight% or less, Cu: 0.005-0.2 weight%, and rest Fe and other impurity. The content of Mn, Cu, and S satisfies 5<=0.27 *(Mn+Cu)/S<=25. The cold rolled steel comprises the precipitate selected one or more among the group consisting of MnS, CuS, and (Mn, Cu)S. The mean size of the precipitate is less than 0.2micron. The Mo 0.01-0.2% is additionally included in the steel sheet.</description><subject>ALLOYS</subject><subject>CHEMISTRY</subject><subject>FERROUS OR NON-FERROUS ALLOYS</subject><subject>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</subject><subject>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</subject><subject>METALLURGY</subject><subject>METALLURGY OF IRON</subject><subject>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</subject><subject>TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2009</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNyrEKwjAUheEuDqK-wwVnIW0HcYzJbW9pmmB6IzqVInESLVR8flvwAZwOnP9bJh-qSoKWPdqSCY6yRiDpNdrKlqCc0eCdMagng2igJUSexHnOeFE4NcvQBl9IhXAK0lR8BWk1NNKG6eTgZ9sgk9PAhB5dsU4W9_4xxs1vV8m2QFa0i8Ori-PQ3-IzvrvaZ0IchNhnaZrL_D_1BeesOh8</recordid><startdate>20090702</startdate><enddate>20090702</enddate><creator>KANG, DEOK GU</creator><creator>YOON, JEONG BONG</creator><scope>EVB</scope></search><sort><creationdate>20090702</creationdate><title>HIGH STRENGTH BAKE HARDENING COLD ROLLED STEEL SHEET HAVING EXCELLENT SURFACE QUALITY AND MANUFACTURING METHOD THEREOF</title><author>KANG, DEOK GU ; YOON, JEONG BONG</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_KR20090072113A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; kor</language><creationdate>2009</creationdate><topic>ALLOYS</topic><topic>CHEMISTRY</topic><topic>FERROUS OR NON-FERROUS ALLOYS</topic><topic>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</topic><topic>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</topic><topic>METALLURGY</topic><topic>METALLURGY OF IRON</topic><topic>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</topic><topic>TREATMENT OF ALLOYS OR NON-FERROUS METALS</topic><toplevel>online_resources</toplevel><creatorcontrib>KANG, DEOK GU</creatorcontrib><creatorcontrib>YOON, JEONG BONG</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KANG, DEOK GU</au><au>YOON, JEONG BONG</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>HIGH STRENGTH BAKE HARDENING COLD ROLLED STEEL SHEET HAVING EXCELLENT SURFACE QUALITY AND MANUFACTURING METHOD THEREOF</title><date>2009-07-02</date><risdate>2009</risdate><abstract>A high strength bake hardening cold rolled steel sheet having excellent surface quality and a manufacturing method thereof are provided to prevent surface defect from being generated by controlling dissolved organic carbon within grain with the distribution of the minute precipitate with properly controlling the carbon content. A high strength bake hardening cold rolled steel sheet having excellent surface quality includes C: 0.0005-0.004 weight%, Si: 0.02-0.6 weight%, Mn: 0.2-0.8 weight%, P: 0.005-0.2 weight%, S: 0.003-0.02 weight%, Al: 0.01-0.08 weight%, N: 0.004 weight% or less, Cu: 0.005-0.2 weight%, and rest Fe and other impurity. The content of Mn, Cu, and S satisfies 5<=0.27 *(Mn+Cu)/S<=25. The cold rolled steel comprises the precipitate selected one or more among the group consisting of MnS, CuS, and (Mn, Cu)S. The mean size of the precipitate is less than 0.2micron. The Mo 0.01-0.2% is additionally included in the steel sheet.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; kor |
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| subjects | ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | HIGH STRENGTH BAKE HARDENING COLD ROLLED STEEL SHEET HAVING EXCELLENT SURFACE QUALITY AND MANUFACTURING METHOD THEREOF |
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