专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2003220411A LINE AND METHOD FOR MANUFACTURING STEEL MEMBER 审中-公开
公开(公告)号：JP2003220411A
公开(公告)日：2003-08-05
申请号：JP2002014378
申请日：2002-01-23
申请人： NIPPON STEEL CORP
发明人： SAKAMOTO SHINYA , TERADA YOSHIO , ISHIBASHI HIROO , OSAWA TAKASHI
IPC分类号： B21C37/08 , B21C37/30 , B21D26/033 , B21D26/02
摘要： PROBLEM TO BE SOLVED: To provide a line and a method for manufacturing a steel member with a steel tube as a stock. SOLUTION: In a steel tube manufacturing line wherein a steel tube is manufactured by cutting, forming and welding a steel sheet, and further the steel tube is processed, there are provided a cutting machine for cutting the steel sheet to a given size, a forming machine for forming the cut steel sheet into an open tube by sheet rolling, a laser beam welder for manufacturing a steel tube by welding the butting portions of the formed open tube, a lubricant coating machine for coating the welded steel tube with a lubricant for processing, and a processing machine for bending the lubricant-coated steel tube or performing other process such as pressing, or a hydroforming processing machine for transforming the steel tube by giving a liquid pressure to the inside of the steel tube. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2004330242A Steel pipe with superior stiffness, and its manufacturing method 审中-公开
公开(公告)号：JP2004330242A
公开(公告)日：2004-11-25
申请号：JP2003129132
申请日：2003-05-07
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SAKAMOTO SHINYA , TERADA YOSHIO , OSAWA TAKASHI , SAWADA SHINYA
IPC分类号： B21C37/083 , B21C37/08 , B21D5/01 , B21D5/14
摘要： PROBLEM TO BE SOLVED: To provide a steel pipe used for a member with a superior shock-resistant property.
SOLUTION: The Young's modulus of a rolled steel plate has an anisotropic characteristic. A direction for maximizing the Young's modulus is different from a rolling direction. The Young's modulus is possible to be 215 GPa or more in the vicinity of the direction maximizing the Young's modulus. The steel plate 12 is obliquely cut at an arbitrary angle toward a rolling direction 18 of the rolled steel plate 11. The steel pipe formed in a pipe shape by roll-bending or press-forming in such a manner that the cutting direction 14 of the steel plate 12 coincides with a pipe-axis direction 4 of a steel pipe 1 can be made as a steel pipe used for an axial collapse-resistant member with the Young's modulus of 215 GPa or more at the pipe-axis direction 4. The steel pipe has the Young's modulus of 215 GPa or more at the circumferential direction 5 and can be used as a member capable of receiving shock-bending load from a lateral direction of the steel pipe.
COPYRIGHT: (C)2005,JPO&NCIPI

3. 发明专利

JP2004298961A Method for manufacturing electric resistance welded steel tube excellent in quality of weld zone 有权
公开(公告)号：JP2004298961A
公开(公告)日：2004-10-28
申请号：JP2004049729
申请日：2004-02-25
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： HAMAYA HIDEKI , FUKAMI SHUNSUKE , MIZUHASHI NOBUO , ISHIZUKA TETSUO , ASAHI HITOSHI , TOKUNAMI YOSHIFUMI , NAKAJI TOMOHIRO , TANIMOTO MICHITOSHI , TAKASHIMA FUTOSHI , OSAWA TAKASHI
IPC分类号： B21C37/08 , B23K13/00
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing an electric resistance welded steel tube which can stably and securely decrease defective welding caused by the production of oxides on a weld zone without deteriorating productivity so that the manufactured electric resistance welded steel tube is excellent in the characteristics of the weld zone such as low temperature toughness, corrosion resistance and cold workability.
SOLUTION: In the method for manufacturing the electric resistance welded steel tube, a steel plate is formed into a tubular shape and the end faces to be butted are subjected to electric resistance welding. At the time of the electric resistance welding, high-temperature reducing combustion flame or high-temperature non-oxidizing plasma is blown against the end faces to be butted throughout an area at least from the point of welding to a position 1/5 of the power supplying distance off toward the upstream of welding. The blow velocity is 200 m/s or higher for the high-temperature reducing combustion flame or 30-230 m/s for the high-temperature non-oxidizing plasma.
COPYRIGHT: (C)2005,JPO&NCIPI

4. 发明专利

JP2004195504A Apparatus and method for forming steel pipe and manufacturing equipment train 审中-公开
公开(公告)号：JP2004195504A
公开(公告)日：2004-07-15
申请号：JP2002366649
申请日：2002-12-18
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： OSAWA TAKASHI , SAWADA SHINYA , SAKAMOTO SHINYA , NIWA TOSHIYUKI , NOMURA SHIGEHIKO
IPC分类号： B21C37/08 , B21D5/01
摘要： PROBLEM TO BE SOLVED: To provide a welded steel pipe the dimensional accuracy of which is improved by suppressing an angular shape generated at the press reducing point of a press.
SOLUTION: This forming apparatus of the steel pipe is constituted so as to manufacture an open pipe by forming the steel sheet of a base stock with a press. This forming apparatus is provided with a punch having a projecting part for pressing the steel sheet from above and a die having a concave part for receiving the steel sheet pressed with the punch. This forming apparatus has a counter punch for pressing the steel sheet to the side of the punch by being projected from the side of the die when the steel sheet is pressed with the punch. This forming apparatus has a controller for controlling the pressing pressure to the steel sheet of the counter punch at not less than a specified value.
COPYRIGHT: (C)2004,JPO&NCIPI

5. 发明专利

JPH0894348A METHOD AND DEVICE FOR MEASURING BENDING OF TUBE-ROD-SHAPED BODY 失效
公开(公告)号：JPH0894348A
公开(公告)日：1996-04-12
申请号：JP23500494
申请日：1994-09-29
申请人： NIPPON STEEL CORP
发明人： OSAWA TAKASHI
IPC分类号： G01B11/24 , G01B11/245 , G01B21/20
摘要： PURPOSE: To measure bending on-line in a tube-creating process by supporting a part with an arbitrary length of a material to be measured in cantilever shape, measuring the distance in first direction for crossing a reference line and the distance in second direction for crossing the first direction and the reference line from the reference line to a section center, and compensating deflection due to dead weight. CONSTITUTION: A tube 2 to be measured is retained in Z direction so that it can travel freely by a pair of pinch rollers 1x opposing X direction and pinch rollers 1y opposing Y direction and the pipe 2 is delivered. Then, the center line of the tube 2 when the tube 2 is extended properly in a straight line and there is no deflection due to dead weight is set to a reference line 2sCL and a point Cs of a distance Dsz from a pinch roller 1y on the reference line 2sCL is determined as an observation point. Then, an amount of position deviation αx in X direction and an amount of position deviation αy at the observation point Cs are picked up by CCD cameras 3x and 3y for detection. Then, when a load cell 5Ls detects the blocking of the tube 2, the picked-up image is processed 4a and the compensation of the deflection due to dead weight is compensated, thus outputting the bending of the tube 2.

6. 发明专利

JPH0732008A DEVICE AND METHOD FOR HEATING JOINT OF STEEL STRIP 失效
公开(公告)号：JPH0732008A
公开(公告)日：1995-02-03
申请号：JP17451793
申请日：1993-07-14
申请人： NIPPON STEEL CORP
发明人： OSAWA TAKASHI
IPC分类号： B21B15/00 , B21B45/00 , C21D1/52 , C21D9/50
摘要： PURPOSE:To effectively heat a steel strip in a short time by arranging a burner having plural tip nozzles in the width direction of the steel strip toward joint parts of the steel strip, and making this burner movable in the width direction and the advancing direction of the steel strip. CONSTITUTION:Joint parts joined with a steel strip 1 are heated in the processes continuously joining the steel strip 1. A burner having plural tip nozzles 3 in the width direction of the steel strip 1 is arranged toward the joint parts of the steel strip 1, and this burner is made movable in the width direction and the advancing direction of the steel strip 1. Further, the temperature of the steel strip 1 is measured from the opposite side of this heating device, at the time point to reach at a prescribed temperature, the heating is finished. Therefore, it can be effectively heated in a short time, further because the burner is reciprocated in the width direction of the steel strip 1, the heating irregularity is not generated, problems of the stop of tube production caused on the increase of heating time and the crack of the joint part caused by the heating irregularity can be solved.

7. 发明专利

JP2003286544A Thin-walled steel pipe showing excellent hydroforming property and its manufacturing process 审中-公开
标题翻译：薄壁钢管显示卓越的加氢性能及其制造工艺
公开(公告)号：JP2003286544A
公开(公告)日：2003-10-10
申请号：JP2002380116
申请日：2002-12-27
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SAKAMOTO SHINYA , TERADA YOSHIO , SHIODA KOSAKU , OSAWA TAKASHI , YOSHINAGA NAOKI
IPC分类号： B21B3/00 , B21C37/08 , B21D26/033 , B21D26/053 , B23K26/00 , B23K26/20 , B23K101/06 , C22C38/00 , C22C38/06 , C22C38/58 , B21D26/02
摘要： PROBLEM TO BE SOLVED: To provide a thin-walled steel pipe for hydroforming possessing high strength and excellent forming property and its manufacturing process. SOLUTION: The thin-walled steel pipe comprises, by mass, 0.08-0.25% C, 0.001-1.5% Si, 0.01-2.0% Mn, 0.001-0.06% P, ≤0.05% S, 0.008-0.2% Al, 0.001-0.007% N and the balance being Fe and unavoidable impurities and has a ratio t (wall thickness)/D (outer diameter) of ≤2.0%. The steel pipe has a Lankford value (value r*) of ≥1.2, an average grain size of crystal grains of ≥5 μm and an average aspect ratio of the crystal grains of ≥1.0 and COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供具有高强度和优异成型性能的液压成形用薄壁钢管及其制造方法。
解决方案：薄壁钢管质量分数为0.08-0.25％C，0.001-1.5％Si，0.01-2.0％Mn，0.001-0.06％P，≤0.05％S，0.008-0.2％Al ，0.001-0.007％N，余量为Fe和不可避免的杂质，并且比率t（壁厚）/ D（外径）≤2.0％。钢管的兰克福德值（值r *）≥1.2，晶粒的平均晶粒尺寸≥5μm，晶粒的平均纵横比≥1.0和<3.0。在制造薄壁钢管2的过程中，切割钢板1被压制成管状，并且对接部3通过激光焊接接合。这里，钢板已经经过冷轧压下25-70％的冷轧，随后进行箱式退火。版权所有（C）2004，JPO

8. 发明专利

JP2002120024A ELECTRIC RESISTANCE WELDED TUBE HAVING EXCELLENT HYDROFORM WORKABILITY 失效
公开(公告)号：JP2002120024A
公开(公告)日：2002-04-23
申请号：JP2000318495
申请日：2000-10-18
申请人： NIPPON STEEL CORP
发明人： SAKAMOTO SHINYA , TERADA YOSHIO , OSAWA TAKASHI
IPC分类号： F16L9/02 , B21D26/033 , B21D26/053 , B21D26/02
摘要： PROBLEM TO BE SOLVED: To provide an electric resistance welded tube having excellent hydroform workability in which no local wall thickness reduction or breakage occurs in hydroform working. SOLUTION: This electric resistance welded tube has, at each position in the circumference direction of a base material except an electric-resistance welded part 2, excellent hydroform workability including (1) Difference between maximum and minimum of hardness is

9. 发明专利

JP2000024826A HYDRAULIC REMOTE CONTROL METHOD OF CUTTER BODY FOR CUTTING ELECTRO-RESISTANCE-WELDED TUBE INNER FACE BEAD AND ITS DEVICE 失效
公开(公告)号：JP2000024826A
公开(公告)日：2000-01-25
申请号：JP21200998
申请日：1998-07-13
申请人： NIPPON STEEL CORP , DAIICHI GODO SHOJI KK , HOSAN MACHINERY KK
发明人： OSAWA TAKASHI , SEBAYASHI TAKAIKU , MURAKAMI SUSUMU , NISHIDA YUICHI , IGARASHI KIKO , TOYONAGA SHOICHI
IPC分类号： B23D1/24
摘要： PROBLEM TO BE SOLVED: To instantaneously retreat a cutting tool at the time of pressure relief by inserting a spring below a toll arranged on the opposite side to the cutting tool. SOLUTION: A hydraulic cylinder 9 is stored in a cutter body 8 in the longitudinal direction of a steel pipe, and a hydraulic unit 10 feeding pressure to the hydraulic cylinder 9 is connected by 71 piping 11. When hydraulic pressure is fed from the hydraulic unit 10, the hydraulic cylinder 9 is operated via the piping 11, then a roll 15 installed on the opposite side to a cutting tool 14 cutting a bead is driven via cams 12, 13. When the cutting tool 14 must be retreated in emergency from the bead to be cut due to a stop of continuous pipe manufacture, the retreat by the tare weight of a cutting device is difficult, therefore a retreating spring 7 is installed below a roll 16 arranged in the downstream of the cutting tool 14 to cope with emergency.

10. 发明专利

JPH11235616A STEEL PIPE CUTTER WITH ROTARY DISC CUTTER 失效
公开(公告)号：JPH11235616A
公开(公告)日：1999-08-31
申请号：JP3500998
申请日：1998-02-17
申请人： NIPPON STEEL CORP
发明人： MINAMI HIDEYASU , OSAWA TAKASHI
IPC分类号： B23D21/00
摘要： PROBLEM TO BE SOLVED: To cut a steel pipe to be cut by pushing without damaging a disc cutter by providing a cutter holder and a disc cutter with pivotal function in the traveling direction of a steel pipe to be cut with respect to lateral load in replacing and cutting a steel pipe to be cut. SOLUTION: A buffer material 19 such as a spring or the like is disposed in a connecting portion between a cutter holder 13 suspending part to a disc 16 and the disc 16 through a spacer 17, or in a space up to a frame. Even if a lateral load caused by a mismatch between the traveling speed of a steel pipe to be cut and the traveling speed of a travel type steel pipe cutter is applied, the cutter holder 13 is pivoted on a pin connecting part because the disc cutter 14 is not fixed to the cutter holder 13, and the pivotal distance, normally about 2-5 mm can be absorbed by the buffer material 19 such as a spring or the like. Accordingly, the steel pipe to be cut can be cut by pushing without an obstacle.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式