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1. 发明授权

EP2039441B1 APPARATUS FOR MANUFACTURING SEAM-WELDED PIPE EXCELLING IN WELDED PORTION CHARACTERISTIC 有权
公开(公告)号：EP2039441B1
公开(公告)日：2020-09-09
申请号：EP06823443.4
申请日：2006-11-09
申请人： JFE Steel Corporation
发明人： KENMOCHI, Kazuhito , OKABE, Takatoshi , YOKOYAMA, Hiroyasu , SHIROSAWA, Hiroyuki , SAWAKI, Tetsuro , SUGIMOTO, Yuji , INOUE, Tomohiro , KOIDE, Tatsuo
IPC分类号： B21C37/083 , B23K13/00

2. 发明公开

EP2039441A1 APPARATUS FOR MANUFACTURING SEAM-WELDED PIPE EXCELLING IN WELDED PORTION CHARACTERISTIC 有权
标题翻译：设备用于生产NAHTGESCHWEISSTEN管采用焊接部的优异性能
公开(公告)号：EP2039441A1
公开(公告)日：2009-03-25
申请号：EP06823443.4
申请日：2006-11-09
申请人： JFE Steel Corporation
发明人： KENMOCHI, Kazuhito , OKABE, Takatoshi , YOKOYAMA, Hiroyasu , SHIROSAWA, Hiroyuki , SAWAKI, Tetsuro , SUGIMOTO, Yuji , INOUE, Tomohiro , KOIDE, Tatsuo
IPC分类号： B21C37/083 , B23K13/00
CPC分类号： B23K33/006 , B21C37/083 , B23K11/062 , B23K2101/10 , Y10T29/49968 , Y10T29/53
摘要： Manufacturing equipment of electric resistance welding pipes is provided, in which lateral edges of a strip for an electric resistance welding pipe is shaped with appropriate tapering immediately before electric resistance welding so that welding quality is kept excellent. (1) Cutting or shaving means 3 is provided after a leveler 2. (2) At least one finpass forming stand 4 is provided, which includes a fin having tapering having at least 2 stages. The manufacturing equipment of electric resistance welding pipes satisfies at least one of the above (1) and (2).
摘要翻译：电阻焊接管的制造设备被提供，其中，用于管的电阻焊接条带的侧边缘被成形为具有适当的电阻焊接之前所以没焊接质量保持优良立即逐渐变细。（1）切割或剃须装置3整平剂2。（2）至少一个finpass成形站提供4，其包括鳍具有逐渐变细的具有至少2个阶段后提供。电阻焊管SATIS外资企业的制造设备在上述的至少一种（1）和（2）。

3. 发明授权

EP2050833B1 HIGH-TENSION WELDED STEEL PIPE FOR AUTOMOTIVE STRUCTURAL MEMBER AND PROCESS FOR PRODUCING THE SAME 有权
标题翻译：高负荷的自动COMPONENT及工艺焊接钢管用于生产
公开(公告)号：EP2050833B1
公开(公告)日：2017-04-19
申请号：EP07767459.6
申请日：2007-06-19
申请人： JFE Steel Corporation
发明人： TOYODA, Shunsuke , ARATANI, Masatoshi , KAWABATA, Yoshikazu , HASHIMOTO, Yuji , SUZUKI, Koji , SAKATA, Kei , GUNJI, Makio , SATO, Akio , SAWAKI, Tetsuro
IPC分类号： C22C38/00 , C22C38/14 , C22C38/58 , B21C37/08 , C21D8/02 , C21D8/10
CPC分类号： B21C37/08 , C21D1/26 , C21D8/02 , C21D8/0226 , C21D8/0263 , C21D9/08 , C21D2211/005 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/14

4. 发明公开

EP2050833A1 HIGH-TENSION WELDED STEEL PIPE FOR AUTOMOTIVE STRUCTURAL MEMBER AND PROCESS FOR PRODUCING THE SAME 有权
标题翻译： HOCHGESPANNTES GESCHWEISSTES STAHLROHRFÜRAUTOBAUTEIL UND HERSTELLUNGSVERFAHRENDAFÜR
公开(公告)号：EP2050833A1
公开(公告)日：2009-04-22
申请号：EP07767459.6
申请日：2007-06-19
申请人： JFE Steel Corporation
发明人： TOYODA, Shunsuke , ARATANI, Masatoshi , KAWABATA, Yoshikazu , HASHIMOTO, Yuji , SUZUKI, Koji , SAKATA, Kei , GUNJI, Makio , SATO, Akio , SAWAKI, Tetsuro
IPC分类号： C22C38/00 , C22C38/14 , C22C38/58 , B21C37/08 , C21D8/02 , C21D8/10
CPC分类号： B21C37/08 , C21D1/26 , C21D8/02 , C21D8/0226 , C21D8/0263 , C21D9/08 , C21D2211/005 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/14
摘要： The following tube and method are provided: a high-tensile strength welded steel tube having excellent formability and torsional fatigue endurance after being formed into cross-sectional shape and then stress-relief annealed and a method of producing the tube. A steel material used has a composition which contains C, Si, Al, 1.01% to 1.99% Mn, 0.041% to 0.150% Ti, 0.017% to 0.150% Nb, P, S, N, and O such that the sum of the content of Ti and that of Nb is 0.08% or more, the content of each of C, Si, and Al being within an appropriate range, the content of each of P, S, N, and O being adjusted to a predetermined value or less. The steel material is subjected to a hot-rolling step in which the heating temperature and finish-rolling final temperature of the steel material are each within an appropriate range, is annealed at a temperature of 650°C to 750°C for 2 s or more, and is then coiled at a temperature of 510°C to 660°C, whereby a hot-rolled steel strip is obtained. The hot-rolled steel strip has a microstructure containing 60 volume percent or more of a ferrite phase which has an average grain size of 2 µm to 8 µm and which contains a precipitate of a (Nb, Ti) composite carbide having an average grain size of 2 nm to 40 nm. The hot-rolled steel strip is subjected to an electrically welded tube-making step in which the width reduction of the strip is 10% or less, whereby a welded steel tube is obtained. This allows the high-tensile strength welded steel tube to have a large yield strength of greater than 660 MPa, excellent low-temperature toughness, excellent formability, and excellent torsional fatigue endurance after being stress-relief annealed.
摘要翻译：提供以下管和方法：在形成截面形状并且然后进行应力消除退火之后具有优异的成形性和抗扭疲劳耐久性的高抗拉强度焊接钢管和制造该管的方法。使用的钢材具有含有C，Si，Al，1.01〜1.99％的Mn，0.041〜0.150％的Ti，0.017〜0.150％的Nb，P，S，N，和O的组成， Ti和Nb的含量为0.08％以上，C，Si，Al各自的含量在适当的范围内，P，S，N，O中的每一个的含量被调整为规定值，减。对钢材进行热轧工序，其中钢材的加热温度和精轧最终温度均在适当的范围内，在650℃至750℃的温度下退火2秒或然后在510℃至660℃的温度下卷取，从而获得热轧钢带。热轧钢带具有平均粒径为2μm〜8μm的含有60体积％以上的铁素体相的显微组织，其含有平均粒径（Nb，Ti）复合碳化物的析出物为2nm〜40nm。对该热轧带钢进行电镀钢管制造工序，其中钢带的宽度减小为10％以下，得到焊接钢管。这使得高抗拉强度焊接钢管具有大于660MPa的大屈服强度，优异的低温韧性，优异的成形性，以及在应力消除退火之后的优异的抗扭疲劳耐久性。

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