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11. 发明专利

JP2004358546A Flash butt welding apparatus and its method 审中-公开
公开(公告)号：JP2004358546A
公开(公告)日：2004-12-24
申请号：JP2003162903
申请日：2003-06-06
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： ISHIKAWA HAJIME , UEMORI RYUJI , ICHIYAMA YASUTOMO , YOSHIDA YUZURU
IPC分类号： B23K11/04
摘要： PROBLEM TO BE SOLVED: To provide an apparatus and a method for flash butt welding, used for a building work and a civil work, etc.
SOLUTION: In the flash butt welding apparatus for welding steel materials with heat generated at butted part by butting both steel materials and supplying electric power into these steel materials, the flash butt welding apparatus is provided with electrodes for supplying the current by contacting the respective steel materials, an electrode attaching/detaching device for contacting or attaching/detaching the electrodes with the steel materials, a clamping member for holding the steel materials while positioning at the farther side (outside) from the butted part of the steel materials than a distance from the electrode and a pressing force control unit for controlling the butting force (pressing force) of the steel materials.
COPYRIGHT: (C)2005,JPO&NCIPI

12. 发明专利

JP2004238722A High-strength steel strip excellent in plasma weldability and formability 审中-公开
标题翻译：高强度钢条在等离子体焊接性和可塑性方面优秀
公开(公告)号：JP2004238722A
公开(公告)日：2004-08-26
申请号：JP2003031903
申请日：2003-02-10
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： HAJI JUNJI , ICHIYAMA YASUTOMO , KODAMA SHINJI , KAWASAKI KAORU , SAWAI TAKASHI
IPC分类号： B23K10/02 , B21D22/02 , C22C38/00 , C22C38/06 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To provide a high-strength steel strip which is used for automobiles, industrial machines, etc., can be stably welded by plasma welding without causing burn through or high-temperature cracking even at a high welding rate, and is excellent in formability, such as hole-enlarging property or ductility.
SOLUTION: The high-strength steel strip excellent in plasma weldability and formability contains 0.05-0.10 mass% C, 0.5-2.0 mass% Mn, at most 0.02 mass% P, 0.0015-0.004 mass% S, 0.005-0.1 mass% Al, at most 0.005 mass% N, X to (1.2-X) mass% Si [wherein X=1.75×(10,000×S amount)
-1/2 ], and the balance being iron and unavoidable impurities. The steel strip has a structure comprising at least 90% polygonal ferrite and the balance being a rigid phase such as pearlite or bainitic ferrite and has a hole-enlarging ratio of 80% or higher.
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：为了提供用于汽车，工业机械等的高强度钢带，可以通过等离子焊接稳定地焊接，而不会在高焊接速率下引起燃烧或高温裂纹，成型性优异，例如扩孔性，延展性。解决方案：等离子焊接性和成形性优异的高强度钢带含有0.05-0.10质量％的C，0.5-2.0质量％的Mn，至多0.02质量％的P，0.0015-0.004质量％的S，0.005-0.1质量％％Al，至多0.005质量％N，X至（1.2-X）质量％Si [其中X = 1.75×（10,000×S量） -1/2 ]，余量为铁和不可避免的杂质。钢带具有包括至少90％的多边形铁素体，余量为刚性相的结构，例如珠光体或贝氏体铁素体，并且具有80％以上的扩孔率。版权所有（C）2004，JPO＆NCIPI

13. 发明专利

JP2003290948A Process and equipment for yag laser induced arc filler wire complex welding 有权
标题翻译： YAG激光诱导电弧焊丝复合焊接的工艺和设备
公开(公告)号：JP2003290948A
公开(公告)日：2003-10-14
申请号：JP2002098406
申请日：2002-04-01
申请人： Honda Motor Co Ltd , Nippon Steel Corp , Nippon Steel Weld Prod & Eng Co Ltd , 新日本製鐵株式会社 , 日鐵溶接工業株式会社 , 本田技研工業株式会社
发明人： SONODA HIROFUMI , OKUYAMA KENJI , IFUKURO JUNICHI , YAHABA TAKANORI , TAKIGAWA MASATO , ICHIYAMA YASUTOMO , UKIANA TOSHIYASU
IPC分类号： B23K9/16 , B23K9/067 , B23K9/073 , B23K9/12 , B23K9/127 , B23K26/00 , B23K26/14 , B23K26/20
CPC分类号： B23K26/1429
摘要： PROBLEM TO BE SOLVED: To realize a gap tolerance expansion for a sheet metal butt welding, and to highly efficiently carry out a penetration welding in a sheet metal lap welding or fillet welding. SOLUTION: A YAG (yttrium aluminum garnet) laser induced arc filler wire complex welding process is performed inducing an arc on a filler wire by a plume, that is gas and metallic fumes generated in an plasma state by irradiating the base material to be welded with the YAG laser and limiting a plume produced with the YAG laser in and outside a keyhole, in the state aiming at the vicinity of laser focal point 8 or the laser focal point of a YAG laser 9 to the base materials to be welded 31 and 32 with the filler wire 20 and connecting a power source for applying power to wire 22 between a wire 20 and the base material to be welded. A welding surface is covered with a hood 15, a straightening wire net 16 is put into an inside, the circumference of a welding focal point 8 is enveloped in the straightened flow of shield gas to protect from an oxidation, and the plume is retained. The filler wire 20 is sent to a welding pool. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了实现钣金对接焊接的间隙公差扩展，并且在钣金搭接焊接或角焊中高效地进行贯通焊接。解决方案：YAG（钇铝石榴石）激光诱导电弧填充线复合焊接工艺通过羽流在填充焊丝上引起电弧，即通过照射基材向等离子体状态产生的气体和金属烟雾与YAG激光焊接，并将瞄准在激光焦点8附近的YAG激光器的附近或YAG激光器9的激光焦点与待焊接的基底材料相关联地将用YAG激光器产生的羽流限制在键孔内外。 31和32与填充线20连接，并且连接用于在线20和待焊接的基底材料之间的电线22施加电力的电源。焊接表面被罩15覆盖，将矫直线网16放入内侧，焊接焦点8的周围被包围在矫正的保护气体流中，以防止氧化，并保留羽流。填料线20被送到焊接池。版权所有（C）2004，JPO

14. 发明专利

JP2003200283A METHOD AND EQUIPMENT OF COMPOSITE WELDING OF YAG LASER AND ARC 审中-公开
公开(公告)号：JP2003200283A
公开(公告)日：2003-07-15
申请号：JP2001397947
申请日：2001-12-27
申请人： HONDA MOTOR CO LTD , NIPPON STEEL CORP , NIPPON STEEL WELDING PROD ENG
发明人： SONODA HIROFUMI , OKUYAMA KENJI , IFUKURO JUNICHI , YAHABA TAKANORI , TAKIGAWA MASATO , ICHIYAMA YASUTOMO , UKIANA TOSHIYASU
IPC分类号： B23K9/16 , B23K26/21 , B23K26/346 , B23K26/00
摘要： PROBLEM TO BE SOLVED: To efficiently weld with a broad and deep penetration. SOLUTION: The laser focal point 8 of a YAG laser beam 9 on a base material 32 to be welded is targeted with an arc electrode 20, the base material is irradiated with the YAG laser while an arc power supply 23 is connected between the arc electrode and the base material to be welded, an arc is ignited on the arc electrode by a gas ionized by the YAG laser and metallic vapor, i.e., a plume, a welding using both the YAG laser and the arc is performed by keeping the plume generated by the YAG laser in and in the vicinity of a key hole. A welded surface is covered with a hood 15, a flow rectifying metallic net 16 is inserted into the inside, a zone around the weld focal point 8 is enveloped with a rectified shield gas flow to prevent an oxidation and to place the plume. A filler wire 25 is fed to a molten pool. COPYRIGHT: (C)2003,JPO

15. 发明专利

JP2002126885A MONITORING METHOD FOR LASER WELDING QUALITY AND MONITORING METHOD THEREFOR 失效
公开(公告)号：JP2002126885A
公开(公告)日：2002-05-08
申请号：JP2000326617
申请日：2000-10-26
申请人： NIPPON STEEL CORP , TOYOTA MOTOR CORP
发明人： MAEDA TAKESHI , ICHIYAMA YASUTOMO , TANAKA TAKASHI , OBARA MASAHIRO , TANAKA YOSHITADA , NOMURA KOJI , SHIGA TAKEFUMI
IPC分类号： B23K26/00 , B23K26/21 , B23K103/16
摘要： PROBLEM TO BE SOLVED: To provide a laser welding quality monitoring method and device capable of conducting with excellent accuracy the quality determination of a welded part in lap welding of a surface treatment steel material provided with a covered layer of a substance with a melting point lower than that of a base material. SOLUTION: In the laser welding quality monitoring method in a laser lap welding method in which at least one lapping face becomes the covered layer of the substance with the melting point lower than that of the base material, by using the fact that the low frequency component strength peak-a peak value SL(t) in 30 Hz or below of a key hole emission signal detected by a light sensor makes the relational expression |SL(t)|>Th1 established against a threshold Th1 previously set at the time of occurrence of welding anomaly in over lap gap, the anomaly caused by the lap gap fluctuation amount is detected with excellent accuracy.

16. 发明专利

JP2002120068A MULTIPLE ELECTRODE SUBMERGED ARC WELDING METHOD EXCELLENT IN WELD BEAD SHAPE 失效
公开(公告)号：JP2002120068A
公开(公告)日：2002-04-23
申请号：JP2000316683
申请日：2000-10-17
申请人： NIPPON STEEL CORP
发明人： FUKAMI SHUNSUKE , ICHIYAMA YASUTOMO , INMAKI YOSHIHIRO , SHIMAZU TSUTOMU
IPC分类号： B23K9/18 , B23K9/08
摘要： PROBLEM TO BE SOLVED: To provide a multiple electrode submerged arc welding method by which molten metal flowing to the rear part of the molten metal at high speed welding is effectively and efficiently restrained by utilizing electromagnetic action, and thus defect, etc., such as undercut, in a weld bead accompanying the speeding up of welding, is prevented. SOLUTION: In the multiple electrode submerged arc welding method using AC as welding current of at least the rearmost electrode, to non-solidified welded metal part at the rear part of the rearmost electrode, AC magnetic field having the same frequency as the welding current of the above electrode, is impressed from the vertical and the right and left direction with respect to a weld line. Further, at least one among the magnetic flux density in the AC magnetic field, the frequency phase difference between the above AC magnetic field and the welding current of the above electrode and the impressed position of the above AC magnetic field, is adjusted to obtain the excellent weld bead shape.

17. 发明专利

JPH11314161A METHOD FOR WELDING BAR STEEL AND DEVICE THEREFOR 失效
公开(公告)号：JPH11314161A
公开(公告)日：1999-11-16
申请号：JP12207698
申请日：1998-05-01
申请人： NIPPON STEEL CORP
发明人： KODAMA SHINJI , ICHIYAMA YASUTOMO , WAKABAYASHI MASAKUNI , TERASAKI SHIGEKI
IPC分类号： B23K9/18 , B23K9/20
摘要： PROBLEM TO BE SOLVED: To reduce such defective welding as slag inclusion, undercut, etc., and to obtain the high welded quality in good repeatability by controlling the pull-up movement of a bar steel at the time of generating an arc, the position of the bar steel during the arc holding and the pushing movement of the bar steel at the time of pressing the bar steel. SOLUTION: An inserting body 11 for generating the arc is interposed between the bar steel 9 and a steel plate 10. The welding part is surrounded with powdery and granular flux 12. The welding current is supplied between the bar steel 9 and the steel plate 10 to generate the arc. A command of an arc start detector 5 is received to pull up the bar steel 9. The end surface of the bar steel 9 and the steel plate 10 are melted, and after holding the arc for specific time, the bar steel 9 is pushed down at a comparatively high speed. At the moment of bringing the molten metal on the steel plate 10 into contact with the molten metal at the end part of the bar steel 9, the welding voltage is lowered and a short circuit detected signal is outputted. The pushing speed of the bar steel 9 is changed into a comparatively low speed based on the short circuit signal to push down a prescribed amount. The welding current is stopped and the unmelted powdery and granular flux 12 and solid slag are removed.

18. 发明专利

JPH11123554A METHOD AND DEVICE FOR TIG WELDING 失效
公开(公告)号：JPH11123554A
公开(公告)日：1999-05-11
申请号：JP29000597
申请日：1997-10-22
申请人： NIPPON STEEL CORP
发明人： KODAMA SHINJI , ICHIYAMA YASUTOMO
IPC分类号： B23K9/167 , B23K9/067
摘要： PROBLEM TO BE SOLVED: To prevent damage of a non-consumable electrode and to start an arc smoothly by using an arc generated between a filler wire and a parent metal as a pilot arc and moving the pilot arc to a part between the parent metal and the non-consumable electrode which is applied with no-load voltage in advance. SOLUTION: A non-consumable electrode 1 and a parent metal 2 are fixed with a space L of 2 to 5 mm. A part between the non-consumable electrode 1 and the parent metal 2 is applied with a no-load voltage of a power source 5 for welding. A filler wire 3 and the parent metal 2 are brought into contact with each other and a short-circuit current of 20 to 100 A are applied by using an auxiliary power supply 7 for filler wire energization. After the short-circuit current is detected with a filler wire energization detector 8, the filler wire 3 is separated from the parent metal 2 by inverting a wire feeder 4 and a pilot arc is generated. The pilot arc is moved to between the non-consumable electrode 1 and the parent metal 2 and an arc current is sent. After the arc current is detected with an arc start current detector 6, energization between the filler wire 3 and the parent metal 2 is stopped.

19. 发明专利

JPH10308888A VISUAL SENSOR FOR WELDING 失效
公开(公告)号：JPH10308888A
公开(公告)日：1998-11-17
申请号：JP12786597
申请日：1997-05-02
申请人： NIPPON STEEL CORP
发明人： MAEDA TAKESHI , ICHIYAMA YASUTOMO
IPC分类号： G01B11/00 , B23K9/095 , B23K9/127 , B23K9/32 , G02B5/28 , H04N5/225
摘要： PROBLEM TO BE SOLVED: To easily execute control/welding condition control due to the monitoring or image processing of arc welding by rotating a copper disk during welding and fetching images only when a small hole for image pickup is overlapped with a pin hole. SOLUTION: A pin hole lens 3 with a built-in interference filter 2 is installed on a miniaturized CCD camera 1, a copper disk 5, on which a small diameter hole 12 for image pickup not more than 3 ϕmm, slit 11 for position detection and glass surface cleaning brush 6 are provided in front of the pin hole lens 3, is rotated by a DC motor 9 and a bevel gear 8 and when the small diameter hole for image pickup is overlapped with the pin hole, images are fetched. Since the small diameter hole 12 for image pickup and the slit 11 for position detection are mutually symmetrically positioned on this copper disk 5 and the slit 11 for position detection is passed through a transmissive photosensor 7 when the small diameter hole 12 for image pickup is overlapped with the pin hole, exposure timing can be known from a change in the output voltage of transmissive photosensor 7 and can be used as an image fetch signal.

20. 发明专利

JPH08225917A THERMAL SPRAYING METHOD ONTO MOLD FOR CONTINUOUS CASTING 失效
公开(公告)号：JPH08225917A
公开(公告)日：1996-09-03
申请号：JP15493395
申请日：1995-06-21
申请人： NIPPON STEEL CORP , DAIICHI METEKO KK
发明人： HAMAYA HIDEKI , ICHIYAMA YASUTOMO , KITAGUCHI SABURO , OBARA MASAHIRO , YURIOKA NOBUTAKA , KUROKI MASATSUGU , SHIMA TETSUO , KASAI YOSHINORI , TANNO HITOSHI , SAKAMOTO TOKUHACHIROU , SASAKI MITSUMASA , NAKAGAWA MASAHIRO , ISHIDA MAKOTO
IPC分类号： C23C4/12 , B22D11/04 , B22D11/059 , C23C26/02 , C23C28/00
摘要： PURPOSE: To provide the thermal spraying technique to a mold for continuous casting, particularly to the long sides thereof, in which even if fusing treatment after the thermal spraying is not executed, the high adhesion is obtained without exfoliating the film. CONSTITUTION: After forming Ni-electroplating having 0.1-2mm thickness to a part or the whole of the mold surface composed of copper or copper alloy, blast treatment is executed onto this plated surface so as to become 2-8 Ra roughness. Successively, after heating the mold at 50-100 deg.C, the thermal spraying of an Ni base self-fluxing alloy composed of (1) 60-80% Ni, 15-25% Cr, 1.5-5% B, 2-6% Si, 0.5-1% C, 3-4% Fe or (2) 5-10% Cr, 1.5-3.0% B, 2-4% Si, 0.09-0.60% C, 1.5-3.5% Fe and the balance Ni, and having 10-60μm grain diameter, is executed by using oxygen/hydrogen flame at 1300-2300m/s flame speed and thereafter, the film surface is finished to 1.6-6.3S Rmax.

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