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41. 发明专利

JPH03120029A CONTROLLING METHOD FOR HOT BLAST TEMPERATURE FEEDBACK OF VINYL CHLORIDE LINING FURNACE 失效
公开(公告)号：JPH03120029A
公开(公告)日：1991-05-22
申请号：JP25855689
申请日：1989-10-03
申请人： NIPPON KOKAN KK
发明人： KUROSAWA TOSHIYUKI , MITSUYOSHI KATSUHIKO , ARAKAWA HARUMI , SUZUKI MASAYUKI , NAKAMURA ISAO
IPC分类号： B29C63/34 , B29K27/06
摘要： PURPOSE:To prevent a defective product by disposing a thermometer at a position of a second heating stripe near a tube end forward in a tube advancing direction at the center forward of the tube advancing direction of a preheating stripe and a first heating stripe, and controlling to feed back the indicated temperature values to hot blast gas temperatures of the respective stripes. CONSTITUTION:A steel tube 1 with a vinyl chloride tube of a material to be heated is preheated by a preheating stripe 2 of a V-shaped structure, measured at its temperature by a thermometer 3, its signal is transmitted to a temperature controller 4, compared with a reference temperature, and a command is issued to a flowrate regulating valve 5, thereby regulating the flow rates of fuel gas and the air. Then, the center of the tube is heated at a first heating stripe 7. This temperature is measured by a thermometer 8 arranged at the center of the first stripe side, and its signal is transmitted and similarly controlled. Thereafter, the material to be heated is heated toward the end of the tube by a second heating stripe 9, its temperature is measured by a thermometer 10 disposed at a position near the end of the steel tube of the second stripe side, and similarly controlled. Thus, a defective product is prevented.

42. 发明专利

JPH02245270A METHOD FOR DRYING WATER ON STEEL SURFACE 失效
公开(公告)号：JPH02245270A
公开(公告)日：1990-10-01
申请号：JP6472789
申请日：1989-03-16
申请人： NIPPON KOKAN KK
发明人： NOGUCHI TAKAO , TADA TAKESHI , KUROSAWA TOSHIYUKI
IPC分类号： F26B7/00 , B05C9/14 , B05D3/04
摘要： PURPOSE:To rapidly dry the water adhering on a steel surface by slightly heating the steel to be coated and then immediately blowing a gas heated above ordinary temp. against the steel surface. CONSTITUTION:A steel pipe 1 is heated to 50-60 deg.C by an induction heating coil 2, when the water adhering on the surface of a steel to bi coated is dried. A drying gas 3 kept at ordinary temp. to 120 deg.C is then injected onto the surface of the heated steel pipe 1 from a drying gas injection nozzle 4 and passed through a tunnel-shaped cover 5 to prevent escape of the gas. Consequently, the water on the surface of the steel pipe 1 is rapidly dried in a short time while the pipe passes through the cover 5.

43. 发明专利

JPH02182311A METHOD FOR PREVENTING WALL THICKNESS DEVIATION IN HOT ROLLED STEEL TUBE 失效
公开(公告)号：JPH02182311A
公开(公告)日：1990-07-17
申请号：JP94389
申请日：1989-01-06
申请人： NIPPON KOKAN KK
发明人： SHIBUTA TSUTOMU , KUROSAWA TOSHIYUKI , ITOJIMA KANJI , MITSUYOSHI KATSUHIKO
IPC分类号： B21B17/14 , B21B37/78 , B21B45/02
摘要： PURPOSE:To prevent deviations in wall thickness without influence of twist of a stock by performing reduction rolling by locally and forcedly cooling thick parts in the peripheral direction of a tube in a roll stand consisting of plural rolling rolls. CONSTITUTION:A hexagonal inside shape is generated in a stand incorporating three rolls. Thick wall parts in sides of the hexagonal shape are locally and forcedly cooled to increase deformation resistance and deviation amounts are reduced because a wall thickness of corner parts of the hexagonal shape is relatively increased in a stage of drafting an outside diameter. Respective thick wall parts in sides of the hexagonal shape correspond to positions of caliber edge E of respective rolls in a 1st stand 1 and caliber bottoms B of a 2nd stand 2. Nozzles 12 of a circular-shaped colling water head 11 provided with the nozzles 12 at 60 deg. intervals are arranged in respective stands to correspond with the bottoms B and edges E of a roll caliber to cool locally and forcedly thick wall parts in the peripheral direction. Hence, generation of deviations in wall thickness in the peripheral direction is prevented.

44. 发明专利

JPH01293986A METHOD AND DEVICE FOR MANUFACTURING BUTT WELDED STEEL TUBE 失效
公开(公告)号：JPH01293986A
公开(公告)日：1989-11-27
申请号：JP12135588
申请日：1988-05-18
申请人： NIPPON KOKAN KK
发明人： KUROSAWA TOSHIYUKI , ITOJIMA KANJI , SUZUKI MASAYUKI , SHIBUTA TSUTOMU
IPC分类号： B23K20/00 , B23K20/14
摘要： PURPOSE:To constrain the formation of the scale of an inner face by blowing air toward the external part of a tube from the inner face side of the pipe to the welding part which abutts both edge faces by forming a heated hoop in a tubular shape and blowing an inert gas or CO2 gas into the pipe. CONSTITUTION:The nozzle part 8 of an air blowing nozzle tube 7 is located near the welding part of a tube 18 inside to blow air toward an arrow mark A for the tube outer face from the pipe inner face. On the other hand the nozzle port 10 of an inert gas nozzle tube 9 is located inside the pipe 18 and an inert gas or CO2 gas is blown into the pipe for an arrow mark B. The temp. rise of the welding part is performed and the approach of the cooling water of a welding roll to the welding part is prevented as well. The generation of a scale on the pipe inner face can be prevented because the pipe 18 inside is filled up by an inert gas, etc. The scale loss of the pipe inner face is thus reduced and the welding defect by the cooling water of the welding roll can be prevented.

45. 发明专利

JPS59197311A Twisting guide 失效
标题翻译： TWISTING指南
公开(公告)号：JPS59197311A
公开(公告)日：1984-11-08
申请号：JP6996383
申请日：1983-04-22
申请人： Hitachi Ltd , Nippon Kokan Kk
发明人： NOGUCHI HARUHIRO , KUROSAWA TOSHIYUKI , ISHIYAMA ISAMU , TAKAKURA YOSHIO , ABO AKIRA , NAKAMURA TSUNEO
IPC分类号： B21B39/28
CPC分类号： B21B39/28
摘要： PURPOSE:To obtain a twisting guide capable of passing a strip material automatically installing guide rolls, pinch rolls, and guides between horizontal pinch rolls and vertical ones and changing the slant of the material gradually. CONSTITUTION:Plural sets of slant guide rolls 4 having each a pair of guide rolls 7 are arranged between horizontal pinch rolls 1 and vertical ones 2 by attaching the rolls 4 to frames 8 set on a base 9 in a slanted state with respect to the horizon, and plural slant pinch rolls 5 having each a pair of pinch rolls 10 are also arranged by attaching the rolls 5 to frames 11 in a slanted state with respect to the horizontal direction, at the same time, the slant angles of respective rolls 4 and 5 are aranged to gradually increase with respect to the horizontal direction from the horizontal rolls 1 to the vertical rolls 2 and further, guides 6 for guiding a strip material 3 are installed between the pinch rolls to pass the strip 3 through the guide rolls 4 and the pinch rolls 5.
摘要翻译：目的：获得能够使条带材料自动安装导辊，夹送辊和水平夹送辊之间的引导件的垂直引导件，并逐渐改变材料的倾斜。构成：将具有一对导向辊7的多组倾斜导辊4配置在水平夹送辊1和垂直辊2之间，通过将辊4安装在相对于地平线的倾斜状态下设置在基座9上的框架8上，并且通过将辊5相对于水平方向以倾斜状态安装在框架11上，同时，各辊4和4的倾斜角度也分别设置有具有一对夹送辊10的多个倾斜夹送辊5 5相对于从水平辊1到垂直辊2的水平方向逐渐增加，此外，用于引导条带材料3的引导件6安装在夹送辊之间，以通过引导辊4和带3穿过条带3。夹送辊5。

46. 发明专利

JPS597690A Transfer crane for slit coil 失效
公开(公告)号：JPS597690A
公开(公告)日：1984-01-14
申请号：JP11610882
申请日：1982-07-06
申请人： Nippon Kokan Kk
发明人： NOGUCHI HARUHIRO , KUROSAWA TOSHIYUKI
IPC分类号： B66C1/24 , B65H19/12 , B66C1/22 , B66C17/06

47. 发明专利

JPS5890416A CUTTER EXCHANGING APPARATUS OF SLITTER FOR BAND STEEL 失效
公开(公告)号：JPS5890416A
公开(公告)日：1983-05-30
申请号：JP18443281
申请日：1981-11-19
申请人： NIPPON KOKAN KK
发明人： NOGUCHI HARUHIRO , KUROSAWA TOSHIYUKI
IPC分类号： B23D19/06 , B23D35/00
摘要： PURPOSE:To permit cutter exchanging works on a slitter for band steel to be executed in a short time by incorporating a new cutter and a spacer in the slitter. CONSTITUTION:Another dolly and another slitter A loaded on said dolly are prepared on a rail 16. A new cutter 6 and a spacer 7 are incorporated in this slitter A beforehand. Therefore, the slitter A which is removed from on a buss- line and loaded onto a dolly 17 is placed at the other edge of the rail 16, and another slitter on another dolly in which a new cutter and a spacer are incorporated is transferred onto a rail 1 and then can be fixed on he buss-line, and thus replacement of cutter can be performed in a short time.

48. 发明专利

JPH09314048A RESIN COATED FLEXIBLE STEEL PIPE 失效
公开(公告)号：JPH09314048A
公开(公告)日：1997-12-09
申请号：JP13391896
申请日：1996-05-28
申请人： NIPPON KOKAN KK
发明人： MORI SHINICHIRO , KUROSAWA TOSHIYUKI
IPC分类号： F16L9/22 , B05D7/14 , B32B15/08 , B32B15/082
摘要： PROBLEM TO BE SOLVED: To improve a flexing property, resistance to scratching and workability of a flexible steel pipe by providing a projection having a specified height at the inside surface by using a vinyl chloride resin having a specified value in Shore durometer hardness and on the other hand providing a coating having a specified thickness as an outer layer. SOLUTION: In the resin coated flexible steel pipe 1 having a frame retardancy and flexibility and suitable to an indoor piping, etc., for gas, a coating 2 consisting of the vinyl chloride resin having the Shore durometer hardness (D type) of 18-37 and having the projection having 0.05-2.35mm height at the inside and having 0.5-2.8mm coating thickness is provided as an outer layer. At this time, a homopolymer having a polymerization degree of 400-3000 is used as the vinyl chloride resin used in the resin composition, and a copolymer in which vinyl acetate and ethylene are copolymerized up to about 5wt.% may be used. And a plasticizer is added to the resin composition preferably, and dimethyl phthalate, diethyl phthalate, dibutyl phthalate, etc., are exemplified as the plasticizer.

49. 发明专利

JPH06220599A PRODUCTION OF GALVANIZED STEEL PIPE 失效
公开(公告)号：JPH06220599A
公开(公告)日：1994-08-09
申请号：JP1191193
申请日：1993-01-27
申请人： NIPPON KOKAN KK
发明人： SHIBUTA TSUTOMU , SUGIMOTO YUJI , KUROSAWA TOSHIYUKI , SUGAMASA TETSUAKI , KAIDA KOICHI , OMORI KATSUMI
IPC分类号： C23C2/06 , C23C2/18 , C23C2/38
摘要： PURPOSE:To form a plating layer of a uniform thickness without oxidizing a Zn plating bath by gas wiping the inside and outside surfaces of a steel pipe drawn out of the Zn plating bath with an inert gas at the time of galvanizing the inside and outside surfaces of this steel pipe. CONSTITUTION:The air within the steel pipe 21 to be Zn plated on the inside and outside surfaces is replaced with the gaseous N1 which is the inert gas; thereafter, the steel pipe is immersed into the galvanizing bath 22 to stick molten Zn on the inside and outside surfaces of the steel pipe 21. The gaseous N2 1a is then blown to the outside surface of the steel pipe 21 by an injection nozzle 2 to wipe the surface with the gas and to uniformalize the deposition of the Zn at the time of pulling up the steel pipe 21 from the galvanizing bath 22 by means of a magnet roller 24 of a pulling up device 23. The steel pipe 21 is heated by an induction heater 4 in such a manner that heat input falls gradually from the front end toward the rear end right thereafter, by which the temp. of the plated steel pipe 21 is uniformalized over the entire length. The gaseous N2 1b is then blown to the inside surface of the steel pipe 21 by the injection nozzle 3 to form the uniform Zn plating layer on the inside surface. Since air is not used as the wiping gas, the loss by oxidation of the Zn does not arise.

50. 发明专利

JPH0598345A PRODUCTION OF HIGH DAMPING STEEL TUBE 失效
公开(公告)号：JPH0598345A
公开(公告)日：1993-04-20
申请号：JP25816791
申请日：1991-10-04
申请人： NIPPON KOKAN KK
发明人： KUROSAWA TOSHIYUKI , OTAKE TAKAYUKI , SHIBUTA TSUTOMU
IPC分类号： B21C37/30 , C21D7/13 , C21D8/10 , C22C38/00 , C22C38/06
摘要： PURPOSE:To produce a high damping steel tube excellent in surface characteristics. CONSTITUTION:At the time of producing a high damping steel tube composed of Fe-Si-Al ally, finish working is done at >=500 deg.C at

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