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

JPH0847797A WELDING/TREATMENT DEVICE OF RAIL 失效
公开(公告)号：JPH0847797A
公开(公告)日：1996-02-20
申请号：JP18346494
申请日：1994-08-04
申请人： NIPPON STEEL CORP , HIGASHI NIPPON RYOKAKU TETSUDO , MISHIMA KOSAN CO LTD
发明人： UCHINO KOICHI , SUGINO KAZUO , OKUMURA MAKOTO , KONO KAZUHISA , SHIDARA HIDEKI , MUTA SHINJI
IPC分类号： B23K37/053 , B23K9/038 , B23K9/12 , B23K37/08 , B23K101/26
摘要： PURPOSE:To reduce a working time of rail welding by integrating a device to give tension to rail, a device to execute alignment and upward cambering, a torsion correcting device, a welding device and a removing device of reinforcement of weld on a base. CONSTITUTION:A base 1 is set parallel to rails R1, R2, the level of rails is appropriately set by adjusting an adjuster 10. The rails R1, R2 are approached each other by tensioners 4, 5, initial tension is given to the rails R1, R2. By operating an alignment device 6, the rails R1, R2 are aligned. Inclination of rails R1, R2 is corrected by operating a torsion correcting device 7. The Joining end side of rails R1, R2 is set upward a little bit to reduce the residual stress after welding. Joining part is welded by a welding equipment 9. Excessive reinforcement of weld is removed by an excessive reinforcement of weld removing device 8. By releasing the rails R1, R2 from restraint and dismantling the base 1, the work is completed.

2. 发明专利

JPH07251276A METHOD FOR POURING THERMITE WELDING METAL 失效
公开(公告)号：JPH07251276A
公开(公告)日：1995-10-03
申请号：JP6653794
申请日：1994-03-11
申请人： NIPPON STEEL CORP , MISHIMA KOSAN CO LTD
发明人： KARIMINE KENICHI , OKUMURA MAKOTO , SEKIGUCHI SUSUMU , WASHITANI TOSHIMI , SATO YUZO
IPC分类号： G01K7/02 , B23K23/00
摘要： PURPOSE:To improve the quality of welding by eliminating the variance of time which, starts the pouring of molten metal in a thermite welding. CONSTITUTION:Detecting terminals 9 for molten metal composed of one pair of insulated electric conducting materials are inserted into the inner part or the outer edge part of bottom layer part in thermite solvents 1 piled through a flow-out hole 4 from the bottom part of a crucible. Further, a flat plate 5 is in the closely contacting condition with the bottom surface 27 of the crucible to close the flow-out hole 4, and thermite reaction is started and then, at 10-35sec after shortening the circuit by melting the detecting terminals 9 when the reaction reaches the bottom part of the crucible, the flat plate 5 is instantially slided in the horizontal direction and the flow-out hole 4 is opened to pour the molten metal.

3. 发明专利

JP2002309588A METHOD FOR REMOVING FOUNDATION CONCRETE STRUCTURE 失效
公开(公告)号：JP2002309588A
公开(公告)日：2002-10-23
申请号：JP2001113727
申请日：2001-04-12
申请人： NIPPON STEEL CORP
发明人： NISHIHARA YOSHIHIRO , OKUMURA MAKOTO , NISHIBE KAZUO
IPC分类号： E02D27/00 , E02D27/01 , E04G23/08
摘要： PROBLEM TO BE SOLVED: To provide a method for removing a foundation concrete structure whereby a foundation concrete structure for use as various foundations with installations such as equipment or buildings provided on their tops can be re moved in a short time. SOLUTION: A cutting line is made horizontally in a position a certain distance away from the upper surface of a foundation concrete structure for an upper installation such as equipment or a building, without stopping the use of the installation. Next, the use of the installation is stopped and cuts are made vertically from each end of the cutting line toward the upper surface of the concrete structure. Segments separated by the horizontal and vertical cutting lines are carried away as concrete blocks.

4. 发明专利

JPH08281467A METHOD FOR AUTOMATICALLY WELDING RAIL 失效
公开(公告)号：JPH08281467A
公开(公告)日：1996-10-29
申请号：JP12988295
申请日：1995-04-12
申请人： NIPPON STEEL CORP
发明人： AOKI NOBUYUKI , OTOGURO MITSUAKI , OKUMURA MAKOTO , KARIMINE KENICHI
IPC分类号： B23K25/00 , B23K9/00 , B23K9/038 , B23K28/02 , B23K37/06 , B23K101/26
摘要： PURPOSE: To enable a welding without developing a crack and the shortage to the reinforcement of weld, etc., by tack-welding tab steel plates along the outline of a foot part on the surface abutted on a rail at the position from a foot surface to a foot tip part near the end surface of the rail surrounded with a copper patching plate. CONSTITUTION: The tab steel plates 5A-5D are used by machining to the shape along the outline from the foot tip parts to the foot surfaces near the end surfaces of rails 1A, 1B and tack-welding. During gas shield arc welding to the foot part of rail, a part faced to a bevel together with the rail 1A, 1B as the base material to be welded are welded to form a part of welding metal, and the reinforcement of weld is formed together with the remaining part of the tab steel plate 5A-5D. By this method, it is prevented to excessively weld the foot surface of rail by an arc during welding, and to develop the under-cut part in the foot surface of rail. Further, since the welding metal opened from the rail 1A, 1B at the foot tip part of rail is not brought into direct contact with the copper patching plate, the solidification shrinkage crack can be prevented by mitigating the rapid cooling of the welding metal.

5. 发明专利

JPH08168895A COMPOSITE WIRE FOR WELDING OF RAIL STEEL 失效
公开(公告)号：JPH08168895A
公开(公告)日：1996-07-02
申请号：JP31225094
申请日：1994-12-15
申请人： NIPPON STEEL CORP
发明人： OKUMURA MAKOTO , KARIMINE KENICHI , NAGATOMO KAZUO
IPC分类号： B23K35/30 , B23K9/038 , B23K35/368
摘要： PURPOSE: To assure joint performance excellent in terms of wear resistance and flaw resistance and to provide good welding executability at the time of subjecting middle C-Cr-Mo based rail steels to automatic butt welding and repair welding by combining a CO2 gas shielded arc welding method and electroslag welding method on rail laying site. CONSTITUTION: This composite wire for welding rail steels is formed by filling a flux consisting of alloy component agents or the allay component agents and slag forming agent into a steel sheath. The composite wire described above contains, by weight%, 0.2 to 0.38% C, 0.3 to 2.0% si, 0.8 to 2.5% Mn, 0.9 to 2.8% Cr, 0.1 to 1.0% go and further one or >=2 kinds among 0.01 to 0.1% V, 0.01 to 0.07% Nb and 0.35 to 2.0% Ni at need by the total weight of the composite wire as the total amt. to be incorporated into either or both of the flux and the steel sheath. The composite wire consists of the balance Fe and inevitable impurities.

6. 发明专利

JPH07185881A COATED ELECTRODE FOR CR-MO-BASED RAIL 失效
公开(公告)号：JPH07185881A
公开(公告)日：1995-07-25
申请号：JP33372493
申请日：1993-12-27
申请人： NIPPON STEEL CORP
发明人： OKUMURA MAKOTO , KARIMINE KENICHI , NISHIMURA HITOSHI , UCHINO KOICHI
IPC分类号： B23K35/30 , B23K9/038 , B23K35/365
摘要： PURPOSE:To provide a coated electrode with which joint performance excellent in terms of wear resistance and surface flaw resistance is assured and which has good welding workability at the time of subjecting a Cr-Mo-based rail steel to enclosed arc butt welding and repair build-up welding at an on-site track. CONSTITUTION:A coating material contains, by weight % of the total weight of the coating material, 25 to 45% carbonate, 15 to 30% metal fluoride, 3 to 9% rutile and the balance a coating material and arc stabilizer. A welding electrode is coated with this coating material at 20 to 30% of the total weight of the welding electrode. The coated electrode which contains, by weight % of the respective components occupied in the total metal of the welding electrode, 0.1 to 0.39% C, 0.35 to 0.9% Si, 0.75 to 2.0% Mn, 0.9 to 2.5% Cr, 0.1 to 0.6% Mo or contains at least one : kinds of 0.02 to 0.15% V, 0.02 to 0.1% Nb, 0.2 to 0.5% Cu and 0.5 to 3% Ni in addition to the above and consists of the balance Fe with inevitable impurities is obtd.

7. 发明专利

JPH0760461A METHOD FOR REPLENISHING WELDING FLUX AND DEVICE FOR SCATTERING WELDING FLUX 失效
公开(公告)号：JPH0760461A
公开(公告)日：1995-03-07
申请号：JP23073993
申请日：1993-08-25
申请人： NIPPON STEEL CORP
发明人： AOKI NOBUYUKI , OTOGURO MITSUAKI , OKUMURA MAKOTO , KARIMINE KENICHI
IPC分类号： B23K9/18 , B23K25/00 , B23K37/00
摘要： PURPOSE:To simplify control and storage of welding flux in the execution of site welding and reduce the labor of technical welders. CONSTITUTION:Welding flux 1 after drying of one joint or 100-1000g is stored in a small portable replenishing metallic container 7 which is hemetically sealable and replenished into the hopper of a welding flux scattering device 16 just before the start of welding. The main body 16 and hopper of the welding flux scattering device have attachable and detachable structure and the hopper itself is the replenishing container 7 of the welding flux scattering device 16.

8. 发明专利

JPH06277842A METHOD FOR PREVENTING BREAKING OF ROOT TOE OF PENETRATION WELDING BEAD IN MULTILAYER WELDING OF SINGLE BEVEL GROOVE 失效
公开(公告)号：JPH06277842A
公开(公告)日：1994-10-04
申请号：JP18354393
申请日：1993-06-30
申请人： NIPPON STEEL CORP
发明人： MABUCHI HIDESATO , OKUMURA MAKOTO , KARIMINE KENICHI , KAKIMOTO TOSHITARO
IPC分类号： B23K9/095
摘要： PURPOSE:To provide a welding metho in which breaking flaws are prevented at the root toe of the first pass Uranami welding bead in a multilayer welding of single bevel groove, in connection with a steel structure welding or a circumference welding. CONSTITUTION:In a multilayer welding of single bevel groove, the root gap at the time of the Uranami welding of a first pass is set at 4mm or less. Also, in the multilayer welding of single bevel groove in which the root gap is over 4mm, a buttering of two passes or more is applied at the time of the Uranami welding of the first pass; welding is performed, in the case of welding of a second and a third pass, by dividing into two passes or by performing the small heat input welding of 18kj/cm or less, or welding is performed, in the case of Uranami welding of the first pass, with the heat input of 30kj/cm or above for the welding.

9. 发明专利

JPH05169295A MANUFACTURE OF WELDED CROSSING 失效
公开(公告)号：JPH05169295A
公开(公告)日：1993-07-09
申请号：JP35305191
申请日：1991-12-18
申请人： NIPPON STEEL CORP , RAILWAY TECHNICAL RES INST
发明人： KARIMINE KENICHI , OKUMURA MAKOTO , UCHINO KOICHI , SUGINO KAZUO , OISHIBASHI KOJI , KAMIYAMA KATSUYOSHI , OHARA MUNEYUKI , TATSUMI MITSUMASA
IPC分类号： B23K9/04 , B23K9/00 , B23K31/00 , B23K35/30 , B23K35/365 , B23K35/368 , B23K101/26
摘要： PURPOSE:To manufacture a welded crossing for a railroad branching unit having the wear resistance, the damage resistance and further no-generation of HAZ water crack. CONSTITUTION:In a welded crossing composed of a nose rail and a wing rail, at the time of welding a welding groove part equivalent to the rail head, for a multilayer welding with the gaseous CO2 shielded arc welding method, a coated electrode coated at the outer periphery of the electrode core with the coating flux composition incorporating 0.5-1.0% C against the total weight of electrode and so that the ratio of CaO/CaF2 is made to the range 1.3-1.0 is used or as a consumable electrode the welding solid wire or a welding composite wire containing 0.85-1.5% C against the total weight of filler material is used. The problem of the wear resistance and the damage resistance being the conventional problem can be solved, and the plactical use of the manufacturing method of welded crossing is high for the working efficiency.

10. 发明专利

JPH03249127A SHOT PEENING TREATMENT FOR RAIL-WELDED JOINT 失效
公开(公告)号：JPH03249127A
公开(公告)日：1991-11-07
申请号：JP4568290
申请日：1990-02-28
申请人： NIPPON STEEL CORP
发明人： NISHINO MAKOTO , KARIMINE KENICHI , OKUMURA MAKOTO , YURIOKA NOBUTAKA
IPC分类号： C21D7/06
摘要： PURPOSE:To improve fatigue strength at a welded joint by welding a rail, subjecting the resulting weld zone to heat treatment, and then carrying out shot peening under specific conditions. CONSTITUTION:After a rail is welded at the job site of laying, heat treatment consisting of holding at 500-650 deg.C for >=30sec is carried out, and then, shot peening treatment is applied to both sides of a web lower than the bending neutral axis in the weld zone and the surface and rear surface of a rail foot by projecting steel shots having 1.0-1.8mm diameter and C scale HRC 48-60 hardness by Rockwell hardness under the conditions of 400-1000kgf/m projection density and 60-100m/sec projection rate. By this method, fatigue strength at a welded joint of rail can be improved, and the rail-welded joint excellent in reliability can be obtained.

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