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1. 发明公开

EP4403659A1 FERRITIC STAINLESS STEEL SHEET, AND METHOD FOR PRODUCING FERRITIC STAINLESS STEEL SHEET 审中-公开
公开(公告)号：EP4403659A1
公开(公告)日：2024-07-24
申请号：EP22869621.7
申请日：2022-04-15
申请人： NIPPON STEEL Stainless Steel Corporation
发明人： SAMPEI Satoshi , HAMADA Jun-ichi , TERAOKA Shinichi , FUJIMURA Yoshitomo
IPC分类号： C22C38/00 , C21D9/46 , C22C38/34 , C22C38/60 , C25F1/06
CPC分类号： Y02A50/20 , Y02T10/12 , C22C38/00 , C22C38/34 , C25F1/06 , C21D9/46 , C22C38/60
摘要： This ferritic stainless steel sheet contains, as a chemical composition, by mass%, C: more than 0% and 0.008% or less, Si: 0.01% to 2.50%, Mn: 0.01% to 0.50%, P: 0.0001% to 0.040%, S: 0.001% to 0.010%, Al: 0.001% to 2.500%, Cr: 10.0% to 25.0%, Nb: more than 0% and 0.80% or less, Ti: 0.05% to 0.50%, V: 0.01% to 0.15%, N: more than 0% and 0.050% or less, Ni: 0% to 0.40%, Sn: 0% to 0.200%, Mo: 0% to 1.40%, Cu: 0% to 1.40%, B: 0% to 0.0020%, Sb: 0% to 0.5%, Zr: 0% to 0.5%, Co: 0% to 0.5%, W: 0% to 0.5%, Ta: 0% to 0.100%, Mg: 0% to 0.0050%, Ca: 0% to 0.0050%, Ga: 0% to 0.05%, and REM: 0% to 0.1% with a remainder containing Fe and an impurity, in which, regarding a passive film present on a steel sheet surface, a composition parameter PS represented by a formula (1) is 0.03 or more and 0.15 or less, and a surface coverage of an Al-containing oxide having a circle-equivalent diameter of 0.01 to 1.0 µm in the passive film is 15% to 40%. PS=Al/Ti+Mn+Si+Cr
Here, an element symbol in the formula (1) is a content (mass%) of each element at a depth position at which an A1 amount is maximized in a depth direction of the passive film.

2. 发明公开

EP4332251A1 STEEL WELDED MEMBER 审中-实审
公开(公告)号：EP4332251A1
公开(公告)日：2024-03-06
申请号：EP21939232.1
申请日：2021-04-27
申请人： NIPPON STEEL CORPORATION
发明人： MITSUNOBU, Takuya , MATSUDA, Keitaro , MAKI, Jun , TAKAHASHI, Takehiro , TAKEBAYASHI, Hiroshi
IPC分类号： C21D9/46 , C22C18/00 , C22C21/10 , C25F1/06 , C22C38/00 , C22C38/58 , B23K11/11 , B23K11/16 , C23C2/02
摘要： A steel welded member comprising a plurality of Zn-based plated steel materials, each having a Zn-based plating layer on a surface of a steel material, joined together through at least one spot weld, wherein the steel material contains, by mass%, C: 0.05 to 0.40%, Si: 0.2 to 3.0%, and Mn: 0.1 to 5.0%, the steel welded member includes, by area ratio, 20 to 80% of a Γ phase (Fe 3 Zn 1 0 ) and at least one oxide with a long axis of 0.5 µm or more in a region up to 0.5 mm from an end part of a pressure weld of the spot weld.

3. 发明公开

EP4281605A1 SYSTEM AND METHOD FOR PROVIDING SURFACE CLEANING OF STEEL WIRE ON APPARATUS USED FOR EFFICIENT CLEANING BEFORE GALVANIZED COATING 审中-实审
公开(公告)号：EP4281605A1
公开(公告)日：2023-11-29
申请号：EP21921532.4
申请日：2021-06-09
申请人： Guney Celik Hasir ve Demir Mam. San. Tic. A. S. , Akgungor, Ahmet Ferhat
发明人： AKGUNGOR, Ahmet Ferhat , YILMAZ, Emre , CETIN, Regaip
IPC分类号： C25F1/00 , C25F1/06 , C25F7/00

5. 发明公开

EP3336222A1 PRODUCTION OF A PROTECTIVE COATING OF DETAILS AND CONTAINERS FOR LOGISTICS AND INTERNAL TRANSPORT 无效
公开(公告)号：EP3336222A1
公开(公告)日：2018-06-20
申请号：EP17000883.3
申请日：2017-05-25
申请人： Leann Stañozyk Spólka Akcyjna
发明人： STANCZYK, Lukasz , JÓZWIAK, Krzysztof , LABEDZ, Janusz , GULBINSKI, Boguslaw , TRZCINSKI, Piotr , MAJCHRZYK, Damian
IPC分类号： C25D3/56 , C25D5/36 , C25D5/48 , C25D7/00 , C25F1/06 , C25F3/06 , C23F1/28 , B32B15/01
CPC分类号： C25D5/36 , B32B15/015 , C23F1/28 , C25D3/565 , C25D5/48 , C25D7/00 , C25F1/00 , C25F3/06
摘要： The invention solves the problem of production of the protective coating on a steel surface of details and containers for logistics and internal transport characterized by the fact that before coating, details and/or containers undergo the preparatory process which comprises the preliminary decreasing and acid etching, electrochemical degreasing and so prepared containers and/or details are coated with zinc- nickel coating by means of electrolysis with the nickel condensation in the electrolysis to the level of 13-20% Ni and current density from 2,5 to 3,5 A/dm 2 at the temp. 30-40° for 60-80 min., and after coating is done, passivation without chromium is performed and the process of drying.

6. 发明授权

EP2978879B1 METHOD FOR TREATING IN CONTINUOUS THE SURFACE OF A LAMINATE MADE OF STAINLESS STEEL IN A SOLUTION BASED ON SULFURIC ACID 有权
标题翻译：在基于硫酸的溶液中处理连续处理由不锈钢制成的层压材料的表面的方法
公开(公告)号：EP2978879B1
公开(公告)日：2017-11-08
申请号：EP14722742.5
申请日：2014-03-27
申请人： Tenova S.p.A.
发明人： MARTINES, Stefano , ASTENGO, Giovanni , LUPERI, Stefano , LATTANZI, Luca
IPC分类号： C25F1/06 , C25F7/00
CPC分类号： C25F1/06 , C25F7/00

7. 发明公开

EP3072982A1 HIGH-STRENGTH STEEL SHEET AND METHOD FOR MANUFACTURING SAME 有权
标题翻译： VERFAHREN ZUR HERSTELLUNG DAVON的HOCHFESTES STAHLBLECH
公开(公告)号：EP3072982A1
公开(公告)日：2016-09-28
申请号：EP14864101.2
申请日：2014-11-13
申请人： JFE Steel Corporation
发明人： FUSHIWAKI, Yusuke , KAWASAKI, Yoshiyasu
IPC分类号： C21D9/46 , C21D1/74 , C21D9/56 , C22C38/00 , C22C38/06 , C22C38/60 , C25F1/06
CPC分类号： C21D1/74 , C21D1/76 , C21D8/0447 , C21D9/46 , C21D9/56 , C21D2211/008 , C22C38/00 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/60 , C25F1/06
摘要： An object is to provide a high-strength steel sheet having excellent phosphatability and excellent corrosion resistance after electrodeposition coating has been performed, even in the case where the contents of Si and Mn are high and to provide a method for manufacturing the steel sheet.
A method for manufacturing a high-strength steel sheet, the method including, when a steel sheet having a chemical composition containing, by mass%, C: 0.03% or more and 0.35% or less, Si: 0.01% or more and 0.50% or less, Mn: 3.6% or more and 8.0% or less, Al: 0.01% or more and 1.0% or less, P: 0.10% or less, S: 0.010% or less, and the balance being Fe and inevitable impurities is annealed by using a continuous annealing method, performing a heating process at a heating rate of 7°C/sec. or more in a temperature range in the annealing furnace of 450°C or higher and A°C or lower, controlling the maximum end-point temperature of a steel sheet in the annealing furnace to be 600°C or higher and 700°C or lower, controlling the traveling time of the steel sheet in a steel sheet temperature range of 600°C or higher and 700°C or lower to be 30 seconds or more and 10 minutes or less, and controlling the dew point of the atmosphere in a steel sheet temperature range of 600°C or higher and 700°C or lower to be -40°C or lower, where A: 500 ≤ A ≤ 600.
摘要翻译：本发明的目的是提供一种即使在Si和Mn的含量高的情况下，也可以提供一种钢板的制造方法，而且在进行了电沉积涂覆后，具有优异的磷酸化性和优异的耐腐蚀性的高强度钢板。一种高强度钢板的制造方法，其特征在于，具有以质量％计含有C：0.03％以上且0.35％以下，Si：0.01％以上且0.50％以下的化学组成的钢板，以下，Mn：3.6％以上且8.0％以下，Al：0.01％以上且1.0％以下，P：0.10％以下，S：0.010％以下，余量为Fe和不可避免的杂质通过使用连续退火法进行退火，以7℃/秒的加热速度进行加热处理。以上，在退火炉的450℃以上且A℃以下的温度范围内，将退火炉中的钢板的最终终点温度控制在600℃以上且700℃以上，将钢板在600℃以上且700℃以下的钢板温度范围内的行驶时间控制在30秒以上且10分钟以下的情况下，将气氛的露点控制在钢板温度范围为600℃以上，700℃以下为-40℃以下，A：500‰¤A‰¤600。

8. 发明授权

EP2761063B1 STAINLESS STEEL PICKLING IN AN OXIDIZING, ELECTROLYTIC ACID BATH 有权
标题翻译：在氧化性酸浴和电解的不锈钢酸洗
公开(公告)号：EP2761063B1
公开(公告)日：2016-09-14
申请号：EP12775373.9
申请日：2012-09-26
申请人： Ak Steel Properties, Inc.
发明人： GLASS, Amanda, R. , RODABAUGH, Ronald, D. , PRICE, David, M.
IPC分类号： C25F1/06
CPC分类号： C25F1/06 , B08B3/00 , B08B3/04 , C23G1/081 , C23G1/085 , C23G1/086

9. 发明公开

EP2660364A4 ECO-FRIENDLY HIGH-SPEED PICKLING PROCESS FOR PRODUCING A LOW-CHROME FERRITE-BASED COLD-ROLLED STAINLESS STEEL SHEET HAVING SUPERIOR SURFACE QUALITY 有权
标题翻译：冷的生产环保HOCHGESCHWINDIGKEITSBEIZVERFAHREN轧制CHORMARMEN不锈钢板材的优良的表面质量的铁素体
公开(公告)号：EP2660364A4
公开(公告)日：2014-08-13
申请号：EP11852757
申请日：2011-12-27
申请人： POSCO
发明人： KIM JI-HUN , KIM DONG-HOON , KIM JIN-SUK , CHOI SANG-KYO , LEE YONG-HEON
IPC分类号： C25F1/06 , C23G1/08
CPC分类号： C25F1/06 , C23G1/086

10. 发明授权

EP2102376B1 ANNEALING AND PICKLING PROCESS 有权
标题翻译： GLÜH-UND BEIZVERFAHREN
公开(公告)号：EP2102376B1
公开(公告)日：2012-01-11
申请号：EP07847161.2
申请日：2007-11-14
申请人： DANIELI & C. OFFICINE MECCANICHE S.p.A.
发明人： DULCETTI, Alessandro , PAVLICEVIC, Milorad , ZACCHETTI, Nicoletta , PRIMAVERA, Alessandra , LUPERI, Stefano , LATTANZI, Luca , GUANIN, Simone
IPC分类号： C21D9/56 , C21D9/52 , C25F1/06
CPC分类号： C21D9/561 , C21D9/52 , C23G1/00 , C23G1/085 , C23G1/086 , C25F1/06
摘要： A continuous annealing and pickling process of flat cold-rolled products, such as stainless steel strips, to obtain a high surface quality product at high production rates and with a low environmental impact. It comprises the following steps: heating, up to a temperature comprised in the range 650-1050°C, in an atmosphere with an oxygen content comprised in the range from 0,5 to 12%; heating for a time comprised from 10 to 200 sec up to a temperature comprised in the range from 650 to 1200°C in presence of oxidizing agents and/or inert agents; cooling down to temperatures comprised in the range from 650° C to ambient temperature in presence of oxidizing agents and/or inert agents; thermochemical or electrolytic descaling and finally possible pickling and/or passivation, by means of the use of pickling baths consisting of mineral acid solutions.
摘要翻译：平板冷轧产品如不锈钢带的连续退火和酸洗工艺，以高生产率和低环境影响获得高表面质量的产品。它包括以下步骤：在氧含量为0.5至12％的气氛中加热至达650-1050℃范围内的温度; 在氧化剂和/或惰性剂的存在下加热10至200秒直至温度为650-1200℃的温度; 在氧化剂和/或惰性剂存在下，冷却至650℃至环境温度范围内的温度; 通过使用由无机酸溶液组成的酸洗浴，进行热化学或电解除垢以及最终可能的酸洗和/或钝化。

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