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1. 发明专利

JP2000121574A FLAW INSPECTION APPARATUS FOR STEEL PLATE 失效
公开(公告)号：JP2000121574A
公开(公告)日：2000-04-28
申请号：JP30474398
申请日：1998-10-13
申请人： NIPPON STEEL CORP , TECHNOS KK
发明人： MIZUKAMI KAZUSANE , MURATA TOSHIMICHI , NAGASE MAGONORI , NISHIOKA RYOJI , YAMADA YOSHIRO
IPC分类号： G01N21/89 , G01N21/892
摘要： PROBLEM TO BE SOLVED: To provide a flaw inspection apparatus for a steel plate, by which all kinds of flaws can be detected with a simple constitution and without being restricted by an installation place. SOLUTION: A linear light source 12 which shines radiates the surface of a steel plate 1 with illumination light is installed obliquely by setting an angle θto the horizontal direction with reference to a line C which is at a right angle to a line direction. A camera 14, which pickes up its reflected light images, uses the nearly whole width on the surface of the steel plate as the visual field of an image pickup operation, and the angle of elevation from the center of the visual field is set according to the arrangement state of the linear light source 12. Thereby, the linear light source 12 can irradiate with the illumination light so as to form a shadow in the reflected light image in the same manner as an uneven flaw, and a linear flaw in the line direction can be detected surely.

2. 发明专利

JPH0655126A CONTINUOUS COATING SUPPLY APPARATUS 失效
公开(公告)号：JPH0655126A
公开(公告)日：1994-03-01
申请号：JP21256892
申请日：1992-08-10
申请人： NIPPON STEEL CORP
发明人： KOGA SHIGENOBU , NOMURA SHIGEHIKO , MURATA TOSHIMICHI
IPC分类号： B05B7/24 , B05B9/03 , B05C11/10
摘要： PURPOSE:To eliminate the complicatedness in the changeover of the piping of a coating can to other coating can and to stabilize coating by incorporating a coating circulating and conditioning unit in a plurality of coating cans with respect to a single coating apparatus and arranging the communication pipe connecting the plurality of the coating cans. CONSTITUTION:A coating circulating and conditioning unit is constituted of feed equipment consisting of coating feed piping 2a, a pump 2b, the joints 2c, 2d for the coating feed piping and pump driving source joints 2'c, 2'd coating return equipment consisting of coating return piping 3a and the joints 3c, 3d for the coating return piping and coating conditioning equipment consisting of a coating conditioning device 4a, a coating conditioning device-driving device 4b and drive source joints 4c, 4d. This coating circulating and conditioning unit is incorporated in each of a master coating can 5 and a daughter coating can 15 with respect to a single coating device 7 and the communication pipe 10 connecting the main and daughter coating cans 5, 15 is arranged.

3. 发明专利

JPH0534430B2 失效
公开(公告)号：JPH0534430B2
公开(公告)日：1993-05-24
申请号：JP13090284
申请日：1984-06-27
申请人： NIPPON STEEL CORP
发明人： TSUTSUMI MASAYA , MURATA TOSHIMICHI
IPC分类号： C22C22/00 , C23C22/76

4. 发明专利

JPH03224662A ROLLER CURTAIN COATING METHOD 失效
公开(公告)号：JPH03224662A
公开(公告)日：1991-10-03
申请号：JP1896890
申请日：1990-01-31
申请人： NIPPON STEEL CORP
发明人： OKA JOJI , IWAKURA HIDEAKI , KOTANI HIDEO , MURATA TOSHIMICHI
IPC分类号： B05C5/00 , B05D1/28 , B05D1/30
摘要： PURPOSE:To improve coating efficiency while preventing the generation of unequal coating by supplying a coating material prepd. to a prescribed amt. in the form of a curtain of a prescribed width nearly parallel with the transverse direction of a painting roll onto the surface of this roll and supplying the coating material between both rolls via the painting roll. CONSTITUTION:The paint T is supplied between the coating roll 1 and doctor roll 2 which are disposed at a prescribed spacing between the roll surfaces with paralleling the axes. The coating material which is deposited on the surface of the roll 1 and is discharged downward from between the two rolls 1 and 2 is dropped freely like the curtain downward by a doctor blade 3 provided in contact with the lower part of the roll 1. Further, a body 6 to be coated is passed below the rolls 1, 2 and is coated with the free falling curtain (d) of the paint T. The coating material adjusted to the prescribed amt. is supplied in the form of the curtain of the prescribed width nearly parallel with the transverse direction of the roll onto the surface of the roll 1 or the roll 2 and is supplied between the two rolls 1 and 2 via the surface of the roll 1 or the roll 2. As a result, the unequal coating is prevented and the coating efficiency is improved.

5. 发明专利

JPH0359996B2 失效
公开(公告)号：JPH0359996B2
公开(公告)日：1991-09-12
申请号：JP20886386
申请日：1986-09-06
申请人： NIPPON STEEL CORP
发明人： SHINDO YOSHIO , SAITO KATSUSHI , YAMAZAKI FUMIO , MURATA TOSHIMICHI
IPC分类号： C25D11/36 , B32B15/01 , C25D9/08

6. 发明专利

JPH03107425A PRODUCTION OF HOT ROLLED STEEL PLATE EXCELLENT IN PRESS FORMABILITY AND HAVING REMARKABLE HARDENABILITY DUE TO HEAT TREATMENT AFTER FORMING AND HIGH CORROSION RESISTANCE AND PRODUCTION OF STEEL STRUCTURAL MEMBER USING SAME 失效
公开(公告)号：JPH03107425A
公开(公告)日：1991-05-07
申请号：JP24431789
申请日：1989-09-20
申请人： NIPPON STEEL CORP
发明人： KOYAMA KAZUO , MATSUZU NOBUHIKO , NISHIMOTO MASANORI , MURATA TOSHIMICHI
IPC分类号： C23C2/06 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/16
摘要： PURPOSE:To produce a hot rolled steel plate excellent in press formability by hot- rolling a slab of a steel with a specific composition into a coil, reducing the surface of the coil by means of heating up to a specific temp., and then applying hot dip galvanizing to the above coil. CONSTITUTION:A steel which has a composition consisting of, by mass,

7. 发明专利

JPH02254117A MANUFACTURE OF LOW YIELD RATIO HOT DIP GALVANIZED HOT ROLLED STEEL SHEET FOR BUILDING HAVING EXCELLENT FIRE RESISTANCE 失效
公开(公告)号：JPH02254117A
公开(公告)日：1990-10-12
申请号：JP7354889
申请日：1989-03-25
申请人： NIPPON STEEL CORP
发明人： ASANO HIROHIDE , MATSUZU NOBUHIKO , TAKAHASHI TAKAHARU , MURATA TOSHIMICHI
IPC分类号： C21D8/02 , C21D9/46 , C22C38/00 , C22C38/14 , C23C2/02 , C23C2/06
摘要： PURPOSE:To manufacture the low yield ratio hot dip galvanized hot rolled steel sheet having excellent fire resistance by subjecting a steel having specified compsn. constituted of C, Mn, P, Al, Cu, Ti, Nb and Fe to specified hot rolling, cooling, coiling, annealing and hot dip galvanizing. CONSTITUTION:A steel constituted of =800 deg.C. The hot rolled sheet is cooled at >=3 deg.C/S average and is thereafter coiled at =1 deg.C/S, which is heated to >=700 deg.C in a reducing atmosphere, is successively cooled at >=3 deg.C/S and is subjected to hot dip galvanizing. In this way, the low yield ratio hot dip galvanized hot rolled steel for building having excellent fire resistance of >=0.6 yield point strength at 600 deg.C as compared to that at an ordinary temp. can be obtd.

8. 发明专利

JPS63153295A COLORED COATED STEEL SHEET AND ITS PRODUCTION 失效
公开(公告)号：JPS63153295A
公开(公告)日：1988-06-25
申请号：JP29920086
申请日：1986-12-16
申请人： NIPPON STEEL CORP
发明人： SHINDO YOSHIO , SAITO KATSUSHI , SHIMAZU TAKASHI , MURATA TOSHIMICHI
IPC分类号： C25D9/08 , C23C28/00 , C23C28/04
摘要： PURPOSE:To produce the title coated steel sheet having an excellent coloring characteristic such as black in a short time by electrolyzing the steel sheet in an acidic bath wherein the contents of Me and Zn and the ratio of both metals are specified, chemical conversion coating the sheet, and then applying a guard coat to the sheet. CONSTITUTION:An aq. acidic soln. kept at 1-4pH, contg. 10-90g/l Zn and 10-100g/l Me , wherein the ratio of Mn /Zn is controlled to >=1, and consisting essentially of 1-50g/l OX is prepared. One kind among Ni , Co , Fe , Sn , and Cu is exemplified as the Me , and one kind among NO3 , NO2 , ClO4 , etc., is used as the OX. A steel sheet or a plated steel sheet is electrolyzed in the aq. soln. at 5-100A/dm current density and 20-200 coulomb/dm quantity of electricity with the plated steel sheet as a cathode, and a film consisting essentially of a coloring oxide is formed at 0.1-5g/m deposition quantity. The sheet is washed with water, applied with chemical conversion coating such as chromating, and then coated with a guard coat having

9. 发明专利

JPS638200B2 失效
公开(公告)号：JPS638200B2
公开(公告)日：1988-02-22
申请号：JP21058484
申请日：1984-10-09
申请人： NIPPON STEEL CORP
发明人： NOMOTO NOBUO , TSUTSUMI MASAYA , HOTSUTA WATARU , MURATA TOSHIMICHI , ARAKI TATSUSHI
IPC分类号： C25F5/00 , C25D5/26 , C25D11/38 , C25F1/06

10. 发明专利

JPS6191399A Surface treatment of non-plastic surface of steel sheet having composite organic plating one on surface 失效
标题翻译：表面处理表面复合有机镀层钢板的非塑性表面的表面处理
公开(公告)号：JPS6191399A
公开(公告)日：1986-05-09
申请号：JP21058384
申请日：1984-10-09
申请人： Nippon Steel Corp
发明人： NOMOTO NOBUO , TSUTSUMI MASAYA , MURATA TOSHIMICHI
IPC分类号： C25F5/00 , C25D5/26 , C25D11/38 , C25F1/06
摘要： PURPOSE: To improve the corrosion resistance of a steel plate after painting by stripping electrolytically the chromate layer sticking to the non-plating surface then grinding the formed oxide film layer in the stage of subjecting the one surface of the steel plate to an electrolytic chromate treatment after electroplating of Zn.
CONSTITUTION: The steel sheet 2 is introduced through a degreasing tank 3 and a pickling tank 4 into an electroplating tank 5 where Zn or Zn alloy is electroplated on one surface. The steel sheet is then washed and is subjected to the electrolytic chromate treatment 7. After the steel sheet is washed the chromate layer sticking to the non-plating surface is removed in an electrolytic stripping cell 8. Since the overpassive oxide film is formed on the non-plating surface in this stage, the steel sheet 2 is introduced into a washing and grinding installation 9 where the overpassing film on the non-plating surface is ground to at least about 100Å, more preferably about ≤80Å by brush rolls 14 and backup rolls 15 while water is sprayed. The steel sheet is then dried by a dryer 10 and is subjected to painting by a conventional method.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了提高电镀后的钢板的耐腐蚀性，将铬酸盐层剥离到非电镀表面，然后在将钢板的一个表面进行电解铬酸盐处理的阶段中研磨形成的氧化膜层电镀锌后。构成：将钢板2通过脱脂槽3和酸洗槽4导入到电镀槽5中，其中在一个表面上电镀Zn或Zn合金。然后将钢板洗涤并进行电解铬酸盐处理7.在钢板洗涤之后，在电解汽提池8中除去粘附在非电镀表面上的铬酸盐层。由于过电位氧化物膜形成在在该阶段的非电镀表面中，将钢板2引入洗涤和研磨设备9中，其中非电镀表面上的超声波膜被研磨至至少约100Ang，更优选约<= 80A，通过刷辊14和支撑辊15，同时喷洒水。然后将钢板用干燥机10干燥，并通过常规方法进行喷涂。

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