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公开(公告)号：US5900079A
公开(公告)日：1999-05-04
申请号：US637452
申请日：1996-04-25
申请人： Moriaki Ono , Tsuyoshi Shiozaki
发明人： Moriaki Ono , Tsuyoshi Shiozaki
CPC分类号： B23K13/046 , B23K13/025 , B23K26/262 , B23K2203/04
摘要： A method of producing a welded steel pipe which comprises: (a) forming a steel strip having two edges in a cylindrical form so that the two edges face each other; (b) preheating the two edges of the steel strip to a temperature of a melting point or less by applying a high frequency electric current to the two edges; (c) pressing the two edges of the steel strip towards each other by contact with squeeze rolls to form a joint portion including a joint line; (d) radiating a high density energy beam sufficient to fuse a full thickness of the steel strip to a portion adjacent to a squeeze point to weld the joint portion; and (e) controlling an upset by applying the squeeze rolls sufficiently to reduce weld defects.
摘要翻译： 一种焊接钢管的制造方法，其特征在于，包括：（a）形成具有圆筒状的两个边缘的钢带，使得所述两个边缘彼此面对; （b）通过向两个边缘施加高频电流将钢带的两个边缘预热到熔点以下的温度; （c）通过与挤压辊接触将钢带的两个边缘彼此挤压以形成包括接合线的接合部分; （d）辐射足够的高密度能量束以将钢带的整个厚度熔合到与挤压点相邻的部分以焊接接头部分; 和（e）通过充分施加挤压辊来控制镦粗以减少焊接缺陷。
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公开(公告)号：US5961748A
公开(公告)日：1999-10-05
申请号：US684401
申请日：1996-07-19
申请人： Moriaki Ono , Tsuyoshi Shiozaki , Masanori Ohmura , Yutaka Nagahama , Akio Sato , Kenichi Iwazaki , Yukio Sekine
发明人： Moriaki Ono , Tsuyoshi Shiozaki , Masanori Ohmura , Yutaka Nagahama , Akio Sato , Kenichi Iwazaki , Yukio Sekine
CPC分类号： B21C37/08 , B23K26/262 , B23K26/32 , B23K2201/06 , B23K2203/04 , B23K2203/05 , B23K2203/50 , Y10S148/909
摘要： A laser-welded steel pipe includes: a steel pipe consisting essentially of C in an amount of 0.01 to 0.5 wt. %, Si in an amount of 1 wt. % or less, Mn in an amount of 0.05 to 2 wt. % and Cr in an amount of 6 wt. % or less; and a weld zone having a melted and solidified metal structure containing carbon and oxygen. The carbon content, �C wt. %!, and the oxygen content, �O wt. %!, in the melted and solidified metal structure satisfies the following equations:�C wt. %!.times.�O wt. %!.ltoreq.0.006, for the steel pipe containing C in an amount of less than 0.2 wt. %,�O wt. %!.ltoreq.0.03, for the steel pipe containing C in an amount of 0.2 wt. % or more.
摘要翻译： 激光焊接钢管包括：基本上由C组成的钢管，其量为0.01〜0.5重量％ ％，Si为1重量％ ％以下，Mn为0.05〜2重量％。 ％和Cr的量为6wt。 ％ 或更少; 以及具有熔融和固化的含有碳和氧的金属结构的焊接区。 碳含量[C wt。 ％]，氧含量[O wt。 ％]，在熔融和固化的金属结构中满足以下等式：[C wt。 ％] x [O wt。 ％]
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公开(公告)号：US6140601A
公开(公告)日：2000-10-31
申请号：US340355
申请日：1999-06-28
申请人： Moriaki Ono , Tsuyoshi Shiozaki , Masanori Ohmura , Yutaka Nagahama , Akio Sato , Kenichi Iwazaki , Yukio Sekine
发明人： Moriaki Ono , Tsuyoshi Shiozaki , Masanori Ohmura , Yutaka Nagahama , Akio Sato , Kenichi Iwazaki , Yukio Sekine
CPC分类号： B21C37/08 , B23K26/262 , B23K26/32 , B23K2201/06 , B23K2203/04 , B23K2203/05 , B23K2203/50 , Y10S148/909
摘要： A laser welded steel pipe having a weld zone containing a steel pipe containing 0.01 to 0.2 weight % C, 1 weight % or less S, 0.05 to 2 weight % Mn and 6 weight % or less Mn. The weld zone has a melted and solidified metal structure containing carbon and oxygen which satisfy the following equations:(carbon weight %)(oxygen weight %).ltoreq.0.006for a steel pipe containing carbon in an amount of less than 0.2 weight %, and(oxygen weight %).gtoreq.0.02.A method for manufacturing a laser-welded steel pipe including producing an open pipe made from a hot-rolled steel strip with opposing edge portions facing each other by employing a formal roll, preheating the two edge portions, pressing the two edge portions to butt against each other by using squeeze rolls and welding the butted edge portions by irradiation with a laser beam to heat and melt the two edge portions.
摘要翻译： 一种具有含有钢管的焊接区域的激光焊接钢管，其含有0.01〜0.2重量％的C，1重量％以下的S，0.05〜2重量％的Mn和6重量％以下的Mn。 焊接区域具有含碳和氧的熔融和固化的金属结构，其满足以下等式：对于含有小于0.2重量％的碳的钢管，（碳重量％）（氧重量％）<0.00 = 和（氧重量％）> / = 0.02。一种激光焊接钢管的制造方法，其特征在于，包括：制造由热轧钢带制成的开口管，所述开口管具有相对的边缘部分，通过使用正式辊彼此面对，预热所述两个 边缘部分，通过使用挤压辊挤压两个边缘部分彼此对接并且通过用激光束照射焊接对接边缘部分以加热和熔化两个边缘部分。
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公开(公告)号：US06666932B2
公开(公告)日：2003-12-23
申请号：US10108691
申请日：2002-03-28
申请人： Yoshimasa Funakawa , Tsuyoshi Shiozaki , Kunikazu Tomita , Takanobu Saito , Hiroshi Nakata , Kaoru Sato , Minoru Suwa , Tetsuo Yamamoto , Yasuhiro Murao , Eiji Maeda
发明人： Yoshimasa Funakawa , Tsuyoshi Shiozaki , Kunikazu Tomita , Takanobu Saito , Hiroshi Nakata , Kaoru Sato , Minoru Suwa , Tetsuo Yamamoto , Yasuhiro Murao , Eiji Maeda
IPC分类号： C22C3814
CPC分类号： C23C2/40 , B32B15/013 , C21D8/0226 , C21D2211/004 , C21D2211/005 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/14 , Y10T428/12799
摘要： The present invention relates to a high strength hot rolled steel sheet containing 0.15% or less C, 0.02 to 0.35% Ti, and 0.05 to 0.7% Mo by weight percentage and consisting essentially of a matrix of ferrite structure single phase and fine precipitates with a grain size of smaller than 10 nm dispersed in the matrix, for example, a high strength hot rolled steel sheet which consists essentially of 0.06% or less C, 0.5% or less Si, 0.5 to 2.0% Mn, 0.06% or less P, 0.005% or less S, 0.1% or less Al, 0.006% or less N, 0.02 to 0.10% Ti, 0.05 to 0.6% Mo by weight percentage, and the balance being Fe, wherein fine precipitates with a grain size of smaller than 10 nm are dispersed in a matrix of ferrite structure single phase at a number per unit volume of 5×104/&mgr;m3 or higher. This steel sheet, which has tensile strength of not lower than 550 MPa, high elongation and excellent stretch flangeability, is suitable for intricately shaped automotive chassis parts such as a suspension arm.
摘要翻译： 本发明涉及含有0.15％以下的C，0.02〜0.35％Ti和0.05〜0.7％Mo的高强度热轧钢板，主要由铁素体结构单相和微细析出物组成， 分散在基体中的小于10nm的晶粒尺寸，例如基本上由0.06％以下的C，0.5％以下的Si，0.5〜2.0％的Mn，0.06％以下的P组成的高强度热轧钢板， 0.005％以下的S，0.1％以下的Al，0.006％以下的N，0.02〜0.10％的Ti，0.05〜0.6％的Mo，余量为Fe，其中微细析出的晶粒尺寸小于10 nm以5×10 4 / m 3以上的单位体积数分散在铁素体结构单相的基体中。 该拉伸强度不低于550MPa，伸长率高，拉伸凸缘性优异的钢板适用于悬挂臂等复杂形状的汽车底盘部件。
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