JP2010053371A5 - - Google Patents

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JP2010053371A5
JP2010053371A5 JP2008216252A JP2008216252A JP2010053371A5 JP 2010053371 A5 JP2010053371 A5 JP 2010053371A5 JP 2008216252 A JP2008216252 A JP 2008216252A JP 2008216252 A JP2008216252 A JP 2008216252A JP 2010053371 A5 JP2010053371 A5 JP 2010053371A5
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mass
steel sheet
less
rolled steel
producing
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JP2008216252A
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JP2010053371A (en
JP5256936B2 (en
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C：0.01〜0.20mass%、Si：0.8〜2.0mass%、Mn:1.0〜3.0mass%、P：0.03mass%以下、S：0.005mass%以下を含有し、残部はFeおよび不可避不純物からなる冷延鋼板を焼鈍し、次いで、焼き入れ、焼き戻しを行い、その後電解酸洗処理することでTS≧590Mpaの強度を有する高強度冷延鋼板を製造するにあたり、前記焼鈍は、炉内雰囲気をN2-H2とし、H2Oの分圧（PH2O）とH2分圧（PH2）の比であるPH2O／PH2を1.0×10-3以下に保持し、前記電解酸洗は、電流密度が1A/dm2以上の交番電解とすることを特徴とする高強度冷延鋼板の製造方法。 C: 0.01 to 0.20 mass%, Si: 0.8 to 2.0 mass%, Mn: 1.0 to 3.0 mass%, P: 0.03 mass% or less, S: 0.005 mass% or less , with the balance being composed of Fe and inevitable impurities In producing a high-strength cold-rolled steel sheet having a strength of TS ≧ 590 MPa by annealing the rolled steel sheet, then quenching and tempering, followed by electrolytic pickling, 2 -H 2 , PH 2 O / PH 2 , which is a ratio of H 2 O partial pressure (PH 2 O) and H 2 partial pressure (PH 2 ), is maintained at 1.0 × 10 −3 or less, and the electrolytic acid Washing is an alternating electrolysis with a current density of 1 A / dm 2 or more. A method for producing a high-strength cold-rolled steel sheet.
JP2008216252A 2008-08-26 2008-08-26 Manufacturing method of high strength cold-rolled steel sheet Active JP5256936B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008216252A JP5256936B2 (en) 2008-08-26 2008-08-26 Manufacturing method of high strength cold-rolled steel sheet

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Application Number Priority Date Filing Date Title
JP2008216252A JP5256936B2 (en) 2008-08-26 2008-08-26 Manufacturing method of high strength cold-rolled steel sheet

Publications (3)

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JP2010053371A JP2010053371A (en) 2010-03-11
JP2010053371A5 true JP2010053371A5 (en) 2011-07-28
JP5256936B2 JP5256936B2 (en) 2013-08-07

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Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5760361B2 (en) * 2010-09-29 2015-08-12 Ｊｆｅスチール株式会社 High strength steel plate and manufacturing method thereof
JP5810499B2 (en) * 2010-09-29 2015-11-11 Ｊｆｅスチール株式会社 Manufacturing method of high-strength steel sheet
JP5609494B2 (en) 2010-09-29 2014-10-22 Ｊｆｅスチール株式会社 High strength steel plate and manufacturing method thereof
KR20130049821A (en) * 2010-09-30 2013-05-14 제이에프이 스틸 가부시키가이샤 High-strength steel sheet and method for producing same
CN103154297B (en) * 2010-09-30 2016-05-18 杰富意钢铁株式会社 High-strength steel sheet and manufacture method thereof
TWI609086B (en) * 2010-09-30 2017-12-21 杰富意鋼鐵股份有限公司 High strength steel sheet and method for manufacturing the same
JP5682366B2 (en) * 2011-02-21 2015-03-11 Ｊｆｅスチール株式会社 Method for producing Si-containing cold-rolled steel sheet
JP5834869B2 (en) * 2011-12-14 2015-12-24 Ｊｆｅスチール株式会社 High-strength steel sheet with excellent chemical conversion and process for producing the same
JP5834870B2 (en) * 2011-12-14 2015-12-24 Ｊｆｅスチール株式会社 High strength steel plate and manufacturing method thereof
JP5891845B2 (en) * 2012-02-24 2016-03-23 Ｊｆｅスチール株式会社 Manufacturing method of surface-treated steel sheet
WO2013187030A1 (en) * 2012-06-15 2013-12-19 Ｊｆｅスチール株式会社 High-strength steel sheet, high-strength hot-dip zinc-coated steel sheet, and methods for producing said steel sheets
JP6505415B2 (en) * 2014-11-04 2019-04-24 日本冶金工業株式会社 Surface treatment method of Fe-Cr-Ni alloy material excellent in workability and corrosion resistance
JP6528851B2 (en) 2015-09-25 2019-06-12 日本製鉄株式会社 steel sheet

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07316764A (en) * 1994-05-31 1995-12-05 Sumitomo Metal Ind Ltd Production of galvannealed steel sheet
JP2003286592A (en) * 2002-03-29 2003-10-10 Sumitomo Metal Ind Ltd Pickling process for stainless steel strip
JP4781836B2 (en) * 2006-02-08 2011-09-28 新日本製鐵株式会社 Ultra-high strength steel sheet excellent in hydrogen embrittlement resistance, its manufacturing method, manufacturing method of ultra-high strength hot-dip galvanized steel sheet, and manufacturing method of ultra-high-strength galvannealed steel sheet

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