公开(公告)号：US07591914B2

公开(公告)日：2009-09-22

申请号：US10258982

申请日：2001-06-14

申请人： Takaaki Toyooka ,  Yoshikazu Kawabata ,  Akira Yorifuji ,  Masanori Nishimori ,  Motoaki Itadani ,  Takatoshi Okabe ,  Masatoshi Aratani

发明人： Takaaki Toyooka ,  Yoshikazu Kawabata ,  Akira Yorifuji ,  Masanori Nishimori ,  Motoaki Itadani ,  Takatoshi Okabe ,  Masatoshi Aratani

IPC分类号： C21D9/08 ,  C22C38/00

CPC分类号： B21C37/08 ,  B21B17/14 ,  B21C37/06 ,  C21D8/10 ,  C21D9/08 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

摘要： A steel pipe is produced by a method including performing diameter-reducing rolling on a steel pipe in a temperature range of from 600° C. to Ac3 with a reduction in diameter of not less than 30%, preferably after heating the steel pipe to temperatures of not lower than Ac1, the steel pipe being produced by seam-welding strip steel, or a method further including the step of performing heat treatment of holding the rolled steel pipe in a temperature range of from 600° C. to 900° C. for a time of 1 second or longer during cooling subsequent to the diameter-reducing rolling or by reheating the rolled steel pipe after the cooling.

摘要翻译： 钢管通过以下方法制造，该方法包括在600℃至300℃的温度范围内对钢管进行直径减小轧制，直径减小至少30％，优选在将钢管加热至温度 不低于Ac1的钢管，通过缝焊带钢生产的钢管，或者还包括在600℃〜900℃的温度范围内进行热轧处理的方法。 在直径减小轧制之后的冷却期间或通过在冷却之后再加热轧制钢管，持续1秒或更长时间。

公开(公告)号：US06331216B1

公开(公告)日：2001-12-18

申请号：US09214226

申请日：1998-12-30

申请人： Takaaki Toyooka ,  Akira Yorifuji ,  Masanori Nishimori ,  Motoaki Itadani ,  Yuji Hashimoto ,  Takatoshi Okabe ,  Nobuki Tanaka ,  Taro Kanayama ,  Osamu Furukimi ,  Masahiko Morita ,  Takaaki Hira ,  Saiji Matsuoka

发明人： Takaaki Toyooka ,  Akira Yorifuji ,  Masanori Nishimori ,  Motoaki Itadani ,  Yuji Hashimoto ,  Takatoshi Okabe ,  Nobuki Tanaka ,  Taro Kanayama ,  Osamu Furukimi ,  Masahiko Morita ,  Takaaki Hira ,  Saiji Matsuoka

IPC分类号： C21D713

CPC分类号： C21D8/10 ,  C21D2201/00 ,  C21D2211/005

摘要： The steel pipe has a structure composed mainly of ferrite or ferrite plus pearlite or ferrite plus cementite. The steel pipe is characterized by grain size not greater than 3 &mgr;m, preferably not greater than 1 &mgr;m, elongation greater than 20%, tensile strength (TS:MPa) and elongation (E1:%) whose product is greater than 10000, and percent ductile fracture greater than 95%, preferably 100%, measured by Charpy impact test on an actual pipe at −100° C. The structure is characterized by C: 0.005-0.03%, Si: 0.01-3.0%, Mn: 0.01-2.0%, and Al: 0.001-0.10% on a weight basis, and is composed of ferrite or ferrite and a secondary phase, with ferrite grains being not greater than 3 &mgr;m and the secondary phase having an areal ratio not more than 30%. A steel pipe stock having the above-mentioned composition is heated at a temperature of (Ac1+50° C.) to 400° C. and subsequently reduced at a rolling temperature of (Ac1+50° C.) to 400° C. such that the cumulative reduction of diameter is greater than 20%. The reducing is preferably performed such that at least one of rolling passes reduces the diameter by more than 6% per pass. The steel pipe will have high ductility and high strength and will be superior in toughness and stress corrosion cracking resistance, if the content of C, Si, Mn, and other alloying elements is limited low and reducing is performed at the temperature specified above. The resulting steel pipe has good fatigue resistance and is suitable for use as line pipe.

摘要翻译： 钢管具有主要由铁素体或铁素体加珠光体或铁素体和渗碳体组成的结构。 钢管的特征在于，其粒径不大于3μm，优选不大于1μm，伸长率大于20％，拉伸强度（TS：MPa）和伸长率（E1：％）大于10000， 延性断裂大于95％，优选100％，通过夏比冲击试验在-100℃的实际管上测量。该结构的特征在于C：0.005-0.03％，Si：0.01-3.0％，Mn：0.01-2.0 ％，Al：0.001-0.10％，由铁素体或铁素体和二次相组成，铁素体晶粒不大于3μm，第二相的面积比不大于30％。 将具有上述组成的钢管坯料在（Ac1 + 50℃）的温度下加热至400℃，随后在（Ac1 + 50℃）的轧制温度下降低至400℃。 使得直径的累积减小大于20％。 优选地进行还原，使得至少一个轧制通道将直径每次通过减少6％以上。 如果C，Si，Mn和其他合金元素的含量低，并且在上述规定的温度下进行还原，则钢管将具有高延展性和高强度，并且在韧性和耐应力腐蚀开裂性方面优异。 所得钢管具有良好的抗疲劳性能，适用于管线管。

公开(公告)号：US06290789B1

公开(公告)日：2001-09-18

申请号：US09254024

申请日：1999-02-26

申请人： Takaaki Toyooka ,  Akira Yorifuji ,  Masanori Nishimori ,  Motoaki Itadani ,  Yuji Hashimoto ,  Takatoshi Okabe ,  Taro Kanayama ,  Masahiko Morita ,  Saiji Matsuoka ,  Nobuki Tanaka ,  Osamu Furukimi ,  Takaaki Hira

发明人： Takaaki Toyooka ,  Akira Yorifuji ,  Masanori Nishimori ,  Motoaki Itadani ,  Yuji Hashimoto ,  Takatoshi Okabe ,  Taro Kanayama ,  Masahiko Morita ,  Saiji Matsuoka ,  Nobuki Tanaka ,  Osamu Furukimi ,  Takaaki Hira

IPC分类号： C21D908

CPC分类号： C21D8/10 ,  C21D2201/00

摘要： A steel pipe containing fine ferrite crystal grains, which has excellent toughness and ductility and good ductility-strength balance as well as superior collision impact resistance, and a method for producing the same are provided. A steel pipe containing super-fine crystal grains can be produced by heating a base steel pipe having ferrite grains with an average crystal diameter of di (&mgr;m), in which C, Si, Mn and Al are limited within proper ranges, and if necessary, Cu, Ni, Cr and Mo, or Nb, Ti, V, B, etc. are further added, at not higher than the Ac3 transformation point, and applying reducing at an average rolling temperature of &thgr;m (°C.) and a total reduction ration Tred (%) within s temperature range of from 400 to Ac3 transformation point, with di, &thgr;m and Tred being in a relation satisfying a prescribed equation.

摘要翻译： 提供了具有优异的韧性和延展性以及良好的延展性 - 强度平衡以及优异的抗冲击冲击性的细铁素体晶粒的钢管及其制造方法。 含有超细晶粒的钢管可以通过加热具有平均晶体直径为二（母）的铁素体晶粒的基础钢管，其中C，Si，Mn和Al被限制在适当的范围内，如果需要 进一步添加Cu，Ni，Cr和Mo，或Nb，Ti，V，B等，不高于Ac 3相变点，并以平均轧制温度（℃）和 总还原率Tred（％）在400至Ac3相变点的s温度范围内，di，tt和tred处于满足规定方程的关系。

公开(公告)号：US08768321B2

公开(公告)日：2014-07-01

申请号：US12162321

申请日：2007-01-24

申请人： Masanori Nishimori

发明人： Masanori Nishimori

IPC分类号： H04M3/42

CPC分类号： H04L65/4061 ,  H04M3/42042 ,  H04M3/42093 ,  H04M3/436 ,  H04W76/45

摘要： A SIP server generates a second call request for calling out group talk members corresponding to a first call request on the basis of the received first call request. Prior to transmitting the generated second call request to the group talk members, the SIP server transmits call request receiving information indicating that the first call request has been received. An SMS server transmits a start-up message to the group talk members on the basis of the received call request receiving information. The start-up message is used to start up an application which executes a group talk, and includes the member identification information of the group talk.

摘要翻译： SIP服务器基于接收到的第一呼叫请求生成用于呼叫对应于第一呼叫请求的群话通话成员的第二呼叫请求。 在将所生成的第二呼叫请求发送给组通话成员之前，SIP服务器发送表示已接收到第一呼叫请求的呼叫请求接收信息。 SMS服务器根据收到的呼叫请求接收信息，向组通话成员发送启动消息。 启动消息用于启动执行组通话的应用，并且包括组通话的成员标识信息。

公开(公告)号：US06216511B1

公开(公告)日：2001-04-17

申请号：US09049193

申请日：1998-03-27

申请人： Toshio Ohnishi ,  Masahiro Kagawa ,  Yoshnori Sugie ,  Koji Sugano ,  Nobuki Tanaka ,  Kingo Sawada ,  Masao Shoji ,  Takaaki Toyooka ,  Yuji Hashimoto ,  Motoaki Itadani ,  Akira Yorifuji ,  Masanori Nishimori

发明人： Toshio Ohnishi ,  Masahiro Kagawa ,  Yoshnori Sugie ,  Koji Sugano ,  Nobuki Tanaka ,  Kingo Sawada ,  Masao Shoji ,  Takaaki Toyooka ,  Yuji Hashimoto ,  Motoaki Itadani ,  Akira Yorifuji ,  Masanori Nishimori

IPC分类号： B21D5128

CPC分类号： B21C37/0811

摘要： A method and apparatus for smoothing a thick walled portion of a steel pipe produced by pressure-welding two opposite longitudinal edges of an open pipe with a squeeze roll after being subjected to induction heating. Outer and inner reduction rollers pressure sandwiches the thick walled portion from the outer and inner surfaces of the pipe, a support supports the inner reduction roller to be rotatable and containing a water passage for cooling water, a connecting rod connects the support device to a coupler and contains a further water passage for feeding cooling water to the water passage, and an anchor holds the connecting rod. In the a method of producing steel pipes two opposite longitudinal edges of the open pipe are preformed before being subjected to the induction heating and thereafter a thick walled portion is smoothed by the above-described apparatus.

摘要翻译： 在进行感应加热之后，通过挤压辊对开口管的两个相对的纵向边缘进行压焊而制造的钢管的厚壁部分的平滑方法和装置。 外压缩辊和内减压辊压力从管的外表面和内表面夹住厚壁部分，支撑件支撑内部还原辊以可旋转并且容纳用于冷却水的水通道，连杆将支撑装置连接到联接器 并且包含用于将冷却水供给到水通道的另外的水通道，并且锚固住连接杆。 在制造钢管的方法中，开口管的两个相对的纵向边缘在进行感应加热之前预先形成，然后通过上述装置使厚壁部分平滑。

公开(公告)号：US07018488B2

公开(公告)日：2006-03-28

申请号：US10049510

申请日：2001-06-14

申请人： Takaaki Toyooka ,  Masanori Nishimori ,  Yoshikazu Kawabata ,  Akira Yorifuji ,  Motoaki Itadani ,  Takatoshi Okabe ,  Masatoshi Aratani

发明人： Takaaki Toyooka ,  Masanori Nishimori ,  Yoshikazu Kawabata ,  Akira Yorifuji ,  Motoaki Itadani ,  Takatoshi Okabe ,  Masatoshi Aratani

IPC分类号： C22C38/02 ,  C22C38/06 ,  C21D8/06

CPC分类号： C22C38/38 ,  C21D8/10 ,  C21D8/105 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/002 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14

摘要： A steel tube having a composition which contains: 0.05 to 0.30% of C; 1.8 to 4.0% of Mn; Si; and Al is subjected to a diameter-reducing rolling process in which the total diameter-reduction rate is no less than 20% and the temperature at which the diameter-reducing rolling process is finished is no higher than 800° C., whereby a structure constituted of martensite and/or bainite or further of ferrite is obtained as a transformation product from the deformed γ. As a result, a steel tube having tensile strength of 1000 MPa or more and excellent three-point-bending property can be obtained. The composition of the steel tube of the present invention may further include at least one type of element selected from the group consisting of Cu, Ni, Cr and Mo, or at least one type of element selected from the group consisting of Nb, V, Ti and B, or at least of one type selected from the group consisting of REM and Ca.

摘要翻译： 一种钢管，其组成为：0.05〜0.30％的C; 1.8〜4.0％的Mn; 硅; 对Al进行直径缩径率为20％以上，直径缩径轧制加工结束温度为800℃以下的直径缩径轧制加工， 由马氏体和/或贝氏体构成的铁素体或其它铁素体由变形的γ得到。 结果，可以得到拉伸强度为1000MPa以上且具有优异的三点弯曲性的钢管。 本发明的钢管的组成还可以包括选自由Cu，Ni，Cr和Mo组成的组中的至少一种元素，或者选自Nb，V， Ti和B，或至少一种选自REM和Ca.

公开(公告)号：US06375059B2

公开(公告)日：2002-04-23

申请号：US09759465

申请日：2001-01-16

申请人： Toshio Ohnishi ,  Masahiro Kagawa ,  Yoshnori Sugie ,  Koji Sugano ,  Nobuki Tanaka ,  Kingo Sawada ,  Masao Shoji ,  Takaaki Toyooka ,  Yuji Hashimoto ,  Motoaki Itadani ,  Akira Yorifuji ,  Masanori Nishimori

发明人： Toshio Ohnishi ,  Masahiro Kagawa ,  Yoshnori Sugie ,  Koji Sugano ,  Nobuki Tanaka ,  Kingo Sawada ,  Masao Shoji ,  Takaaki Toyooka ,  Yuji Hashimoto ,  Motoaki Itadani ,  Akira Yorifuji ,  Masanori Nishimori

IPC分类号： B23K3100

CPC分类号： B21C37/0811

摘要： A method and apparatus for smoothing a thick walled portion of a steel pipe produced by pressure-welding two opposite longitudinal edges of an open pipe with a squeeze roll after being subjected to induction heating. Outer and inner reduction rollers pressure sandwiches the thick walled portion from the outer and inner surfaces of the pipe, a support supports the inner reduction roller to be rotatable and containing a water passage for cooling water, a connecting rod connects the support device to a coupler and contains a further water passage for feeding cooling water to the water passage, and an anchor holds the connecting rod. In the method of producing steel pipes two opposite longitudinal edges of the open pipe are preformed before being subjected to the induction heating and thereafter a thick walled portion is smoothed by the above-described.

摘要翻译： 在进行感应加热之后，通过挤压辊对开口管的两个相对的纵向边缘进行压焊而制造的钢管的厚壁部分的平滑方法和装置。 外压缩辊和内减压辊压力从管的外表面和内表面夹住厚壁部分，支撑件支撑内部还原辊以可旋转并且容纳用于冷却水的水通道，连杆将支撑装置连接到联接器 并且包含用于将冷却水供给到水通道的另外的水通道，并且锚固住连接杆。 在制造钢管的方法中，开口管的两个相对的纵向边缘在进行感应加热之前预先形成，然后通过上述方法使厚壁部分平滑。

公开(公告)号：US20100203875A1

公开(公告)日：2010-08-12

申请号：US12162321

申请日：2007-01-24

申请人： Masanori Nishimori

发明人： Masanori Nishimori

IPC分类号： H04M3/42

CPC分类号： H04L65/4061 ,  H04M3/42042 ,  H04M3/42093 ,  H04M3/436 ,  H04W76/45

摘要： A SIP server generates a second call request for calling out group talk members corresponding to a first call request on the basis of the received first call request. Prior to transmitting the generated second call request to the group talk members, the SIP server transmits call request receiving information indicating that the first call request has been received. An SMS server transmits a start-up message to the group talk members on the basis of the received call request receiving information. The start-up message is used to start up an application which executes a group talk, and includes the member identification information of the group talk.

摘要翻译： SIP服务器基于接收到的第一呼叫请求生成用于呼叫对应于第一呼叫请求的群话通话成员的第二呼叫请求。 在将所生成的第二呼叫请求发送给组通话成员之前，SIP服务器发送表示已接收到第一呼叫请求的呼叫请求接收信息。 SMS服务器根据收到的呼叫请求接收信息，向组通话成员发送启动消息。 启动消息用于启动执行组通话的应用，并且包括组通话的成员标识信息。

公开(公告)号：US06736910B2

公开(公告)日：2004-05-18

申请号：US10048322

申请日：2002-01-29

申请人： Takaaki Toyooka ,  Yoshikazu Kawabata ,  Akira Yorifuji ,  Masanori Nishimori ,  Motoaki Itadani ,  Takatoshi Okabe ,  Masatoshi Aratani ,  Yasue Koyama

发明人： Takaaki Toyooka ,  Yoshikazu Kawabata ,  Akira Yorifuji ,  Masanori Nishimori ,  Motoaki Itadani ,  Takatoshi Okabe ,  Masatoshi Aratani ,  Yasue Koyama

IPC分类号： C22C3802

CPC分类号： B21C37/30 ,  B21B17/14 ,  B21C37/06 ,  B21C37/08 ,  B21C37/16 ,  C21D8/10 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  Y10S148/909

摘要： The invention provides a high-carbon steel pipe having superior cold workability and induction hardenability, and a method of producing the steel pipe. The method comprises the steps of heating or soaking a base steel pipe having a composition containing C: 0.3 to 0.8%, Si: not more than 2%, and Mn: not more than 3%, and then carrying out reducing rolling on the base steel pipe at least in the temperature range of (Ac1, transformation point −50° C.) to Ac1, transformation point with an accumulated reduction in diameter of not less than 30%. A structure in which the grain size of cementite is not greater than 1.0 &mgr;m is obtained, thus resulting in improved cold workability and induction hardenability.

摘要翻译： 本发明提供一种具有优异的冷加工性和感应淬透性的高碳钢管，以及钢管的制造方法。 该方法包括以下步骤：加热或浸泡含有C：0.3〜0.8％，Si：2％以下，Mn：3％以下的组成的基础钢管，然后在基材上进行还原轧制 钢管至少在（Ac1，相变点-50℃）至Ac1的温度范围内，相变点的直径累积减小不小于30％。 获得了渗碳体的粒径不大于1.0μm的结构，从而提高了冷加工性和感应淬透性。