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1. 发明专利

JP2001150135A METHOD AND DEVICE FOR CUTTING SPIRAL STEEL TUBE 失效
公开(公告)号：JP2001150135A
公开(公告)日：2001-06-05
申请号：JP33292799
申请日：1999-11-24
申请人： NIPPON STEEL CORP
发明人： TAKAHASHI HIDENARI , KIKUCHI KAZUYUKI
IPC分类号： B23K10/00 , B21C37/12 , B23K9/127 , B23K37/02 , B23K101/06
摘要： PROBLEM TO BE SOLVED: To provide a cutting method of steel tubes by which the cutting of the bead part of the steel tube is properly executed and markings are not made indistinct by sticking and solidifying of steel droplets which are generated by cutting on the inside surface on the opposite side of the steel tube in the case the steel tube is cut with a plasma torch. SOLUTION: By the cutting method for cutting a spiral steel tube into a prescribed length while making the spiral tube, the position of the bead is detected or calculated and the steel tube is cut with the cutting torch for cutting the spiral steel tube while moving the cutting torch in the rotational direction of the steel tube at a speed equivalent to the difference (Va-Vb) between a cuttable speed Vb and the rotational circomferential speed Va of the steel tube in the detected or calculated position of the bead.

2. 发明专利

JP2000024709A ROLL NECK SEAL FOR ROLLING 失效
公开(公告)号：JP2000024709A
公开(公告)日：2000-01-25
申请号：JP19433098
申请日：1998-07-09
申请人： NIPPON STEEL CORP
发明人： TAKAHASHI HIDENARI
IPC分类号： B21B31/07 , C08L9/02 , F16J15/3232 , F16J15/3284 , F16J15/32
摘要： PROBLEM TO BE SOLVED: To prevent premature hardening and generation of crack of an outer lip, to prevent intrusion of rolling oil, and to prevent deterioration of bearing oil, seizing of bearing and generation of trip at the time of starting a mill by using >= two kinds of rubber materials according to characteristics required for the parts constituting each of the functions of a seal. SOLUTION: A roll neck seal 60 has an outer lip 62 projecting outward in a plate-like shape from the base body in the radial direction, an inner lip 61, and a bearing oil splashing lip 63. Both of the outer lip 62 and the inner lip 61 have a sealing contact with a seal plate 17, the outer lip 62 prevents intrusion of rolling oil and the inner lip 61 prevents flowing-out of bearing oil. The bearing oil splashing lip 63 likewise prevents the flowing-out by splashing the bearing oil. By making each of the inner and outer lips 61, 62 of nitril rubber and heat resisting hydrogenerated nitril rubber respectively, hardening and crack of the outer lip 62 having heavier deterioration than the inner lip 61 are prevented for a long period, and further deterioration of bearing oil due to intrusion of rolling oil and seizing of bearing due to such causes or the like are prevented.

3. 发明专利

JP2002254173A WELDING WIRE FEEDING DEVICE AND HANGER USED THEREFOR 失效
公开(公告)号：JP2002254173A
公开(公告)日：2002-09-10
申请号：JP2001056486
申请日：2001-03-01
申请人： NIPPON STEEL CORP , SANKYU KK
发明人： TAKAHASHI HIDENARI , MINAMI HIDEYASU , KIKUCHI KAZUYUKI , KAGAWA FUMIO
IPC分类号： B23K37/00 , B23K9/133
摘要： PROBLEM TO BE SOLVED: To provide a welding wire feeding device small in an installation area, easy in mounting work for a bobbin, and capable of carrying out the work in safety. SOLUTION: Into a bobbin receiving stand 3 having a tilted bobbin receiving face 302 and a bobbin support shaft 303 extending vertically inclining and upward, a central passing-through hole 2021 of a bobbin 2 wound with a welding wire 8 is fit together by insertion from the inclined upside of the shaft so that a bobbin 2 can be mounted rotatably around the axis of the shaft 303. The shaft 303 is respectively provided with large diameter parts 3031, 3032 on the shaft roof part and in the vicinity of the shaft protrusion tip, and on the tip side from the large diameter part 3032 in the vicinity of the protrusion tip, a tip diameter dwindling part 3034 is provided, and on the intermediate part of the large diameter part, an intermediate small diameter part 3033 is provided.

4. 发明专利

JP2000027873A BEARING BOX FOR HOT CARRYING TABLE 失效
公开(公告)号：JP2000027873A
公开(公告)日：2000-01-25
申请号：JP20709398
申请日：1998-07-08
申请人： NIPPON STEEL CORP
发明人： TAKAHASHI HIDENARI , SUZUKI SANAE
IPC分类号： F16C33/76 , F16C13/02 , F16C33/66
摘要： PROBLEM TO BE SOLVED: To suppress the penetration of water into a bearing box and prevent the failure of a bearing by providing a drip plate for water penetrating into the roll end inner part on the roll side of the bearing box. SOLUTION: A roll 1 is supported on a bearing 3, and the bearing 3 is fixed by a bearing box 4. The grease supplied through a greasing port 6 in order to lubricate the bearing 3 is discharged through a seal 5. At this time, drip plate 7 for water penetrating into the end of the roll 1 is provided on the roll 1 side of the bearing box 4 to prevent the seal 5 of the bearing box 4 from being directly exposed to water. According to this structure, the penetration of water into the bearing box 4 can be prevented to reduce the bearing failure. Preferably, a regularly opened degreasing pipe 8 for greasing work confirmation is provided so as not to fill the inner part of the drip plate 7 with the grease leaked from the seal 5, and the outlet of the degreasing pipe 8 is set downward. Thus, the greasing work can be confirmed without filling a large quantity of grease in the drip plate 7, and the using quantity of grease can be reduced.

5. 发明专利

JPH11141559A CIRCULATIVE GREASE SUPPLYING DEVICE 失效
公开(公告)号：JPH11141559A
公开(公告)日：1999-05-25
申请号：JP30759097
申请日：1997-11-10
申请人： NIPPON STEEL CORP
发明人： TAKAHASHI HIDENARI
IPC分类号： F16N11/08 , F16C33/66
摘要： PROBLEM TO BE SOLVED: To provide a circulative grease supplying device which supplies a pressurized grease to a bearing or bearings and recirculates the grease upon filtration. SOLUTION: A circulative grease supplying device is composed of a grease tank 1 to store grease, a grease pump 3 for transporting the grease upon pressurizing, a first grease supply piping 2 piped from the tank 1 to the pump 3, a second grease supply piping 4 piped from the pump 3 to a bearing or a plurality of bearings, and a return piping 6 piped from the bearing(s) to the tank 1. Therein the grease is supplied from the tank 1 by the pump 3 to the bearing(s) through the supply pipings, returned to the tank 1 from the bearing(s) through the return piping, and recirculated upon filtration.

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