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21. 发明专利

JPS5858981A CONNECTING METHOD FOR STRIP COIL 失效
公开(公告)号：JPS5858981A
公开(公告)日：1983-04-07
申请号：JP15759681
申请日：1981-10-05
申请人： NIPPON STEEL CORP
发明人： OOKI TAKASHI , ISHIGURO TOSHIYASU
IPC分类号： B21C47/26 , B23K9/00 , B23K9/025
摘要： PURPOSE:To obtain a connection part which is strong enough to be immune to bending deformation with passing through in a short time by welding the surfaces and rears of both ends of a coil holding with auxiliary steel plates when connecting coils on a processing line of strip coil. CONSTITUTION:Both ends of coils 1, 1 to be connected are butted and the surfaces and rears are held between auxiliary steel plates 2, 2 made of extra mild carbon steel of good weldability such as SUS 304, SUS 430 etc. Coils 1, 1 are bound by steel plates 2, 2 by spot welding 3 the steel plates. Bending deformation generated by rolls in the line when the weld zone passes the processing line is propped by rigidity of the steel plates 2 to protect the coils to be connected from suffering the effect.

22. 发明专利

JPS57103707A ROLLING MILL TRAIN OF TRI-STAR ROLL 失效
公开(公告)号：JPS57103707A
公开(公告)日：1982-06-28
申请号：JP17808880
申请日：1980-12-18
申请人： NIPPON STEEL CORP
发明人： OOKI TAKASHI , NISHIYAMA YASUYUKI
IPC分类号： B21B1/28 , B21B1/22 , B21B13/00 , B21B13/14
摘要： PURPOSE:To provide a tri-star roll rolling mill train with which the adjustment of the tension on outlet side, and the shape and surface roughness of strips are easy by disposing 4- or 6 stage rolling mills in proximity to the post state of a rolling mill disposed with 3 pieces of work rolls radially at equal intervals on the outside circumferences of non-driven central work rolls. CONSTITUTION:A strip 15 is uncoiled frm an uncoiling reel 11, and is introduced through deflector rolls 16 into a tri-star roll rolling mill 12, where it is screw down hightly at 3 points simultaneously to desired plate thickness. Next, the strip 15 out from the mill 12 is bitten into a 6- high rolling mill 13, by which it is rolled to the final thickness; at the same time, its shape and surface characteristics are controlled, and the strip is taken up on a take-up reel 14. The forward tension of the mill 12 during this time is given by the mill 13. According to this rolling mill train, high screw-down of about 75% is feasible with 1 stand of the rolling mill 12 and therefore the number of rolling stands is decreased. Since the take-up tension is less required, the reduction in the size and capacity of the reel 14 is made possible.

23. 发明专利

JPS55165204A ARRANGING METHOD FOR ROLL OF MULTIROLL MILL 失效
公开(公告)号：JPS55165204A
公开(公告)日：1980-12-23
申请号：JP7303979
申请日：1979-06-12
申请人： NIPPON STEEL CORP
发明人： OOKI TAKASHI
IPC分类号： B21B27/00 , B21B13/02 , B21B13/14
摘要： PURPOSE:To prevent the defective convex roll mark to be printed on the strip by the work roll during the cold rolling work at a high rolling reduction, by specifying the hardness of the intermediate roll to be arranged in the multiroll mill, and by applying the dulling work to this intermediate roll. CONSTITUTION:In the five or more-high multiroll mill, the roll of 72-75 degrees Shore hardness is employed for the intermediate roll to be built in the mill, and the dulling work is applied to this intermediate roll's surface. Hereby, even if the contact pressure between the intermediate roll 2 and the work roll 1 in the cold rolling work at a high rolling reduction increases to an extent of 1.2TON/mm., the generation of the dent flaw in the work roll 1 to be caused by the scum, etc., is prevented; as a result, the defective convex roll mark to be formed in the rolled strip can be prevented.

24. 发明专利

JPS52131920A PRODUCTION OF FERRITIC STAINLESS STEEL PLATE WITH EXCELLENT RIDGING PROPERTY 失效
公开(公告)号：JPS52131920A
公开(公告)日：1977-11-05
申请号：JP4784676
申请日：1976-04-28
申请人： NIPPON STEEL CORP
发明人： IZUMI SOUICHI , SAWAI IWAO , KOYASU YOSHIROU , OOKI TAKASHI , SUGAWARA KATSUTOSHI
IPC分类号： C21D9/46 , C21D8/02
摘要： PURPOSE:To obtain a ferritic stainless steel plate with excellent ridging property by hot rolling and annealing a cast billet of ferritic stainless steel such as SUS430 having specified isomorphic ratio at a specified temperature and by cold rolling and annealing the rolled strip as usual.

25. 发明专利

JPS6250203B2 失效
公开(公告)号：JPS6250203B2
公开(公告)日：1987-10-23
申请号：JP1270881
申请日：1981-01-30
申请人： NIPPON STEEL CORP
发明人： OOKI TAKASHI
IPC分类号： B21B37/48 , B21B37/00 , B21B37/54

26. 发明专利

JPS57109501A ROLLING METHOD FOR TRI-STAR ROLLING MILL 失效
公开(公告)号：JPS57109501A
公开(公告)日：1982-07-08
申请号：JP18370080
申请日：1980-12-26
申请人： NIPPON STEEL CORP
发明人： OOKI TAKASHI
IPC分类号： B21B1/22
摘要： PURPOSE:To achieve stable and high screw-down and high rolling by providing respectively specific roughnesses to that the front and rear surface of a descaled strip have good lubricating and product surface characteristics. CONSTITUTION:The surface roughness on the central work roll 1 side of a strip 3 to be rolled is regulated to 20-40muHmax and the surface roughness on the other outside circumferential work rolls 2a-2c side to

27. 发明专利

JPS57103721A STABLE ROLLING METHOD FOR TRI-STAR ROLL ROLLING MILL 失效
公开(公告)号：JPS57103721A
公开(公告)日：1982-06-28
申请号：JP17808680
申请日：1980-12-18
申请人： NIPPON STEEL CORP
发明人： OOKI TAKASHI , TERAKADO RIYOUJI
IPC分类号： B21B1/22 , B21B37/00 , B21B37/46 , B21B37/48
摘要： PURPOSE:To enable stable rolling work eliminating defects in quality by controlling speed diference rate of inlet and outlet side outer circumference working rolls, inlet side speed of a rolled stock and peripheral speed of intermediate outer circumference rolls. CONSTITUTION:A strip 5 is wound on a central working roll 1 by about 2/3 of circumference, and rolled giving desired tension by an uncoiling reel 6 and a coiling reel 8. At this time, the speed difference ratio of No.1-3 working rolls 2-4 is set by driving devices 10, 12, 14 to coincide with target rolling reduction. The plate speed of inlet side is obtained by a measuring device 17 and this is kept within the range of + or -10% of peripheral speed of the roll 2 obtained by a measuring device 11. At this time, peripheral speed of the roll 1 is obtained by a measuring device 16 and given to the controlling section of the roll 3. The roll 3 is driven according to peripheral speed of the roll 1. By this way, stable rolling can be performed eliminating slacking of the strip 5 and surface flaws.

28. 发明专利

JPS57103711A TRI-STAR ROLL ROLLING MILL 失效
公开(公告)号：JPS57103711A
公开(公告)日：1982-06-28
申请号：JP17808480
申请日：1980-12-18
申请人： NIPPON STEEL CORP
发明人： TERAKADO RIYOUJI , OOKI TAKASHI
IPC分类号： B21B1/28 , B21B1/22 , B21B13/00
摘要： PURPOSE:To perform a rolling stably, by making the dia. of 1st outer work roll at the inlet side and that of 3rd outer work roll at the outlet side almost same, and making the dia. of 2nd outer work roll at the 2nd screw-down point larger by special times as long as the dia. of 1st roll and 2nd one. CONSTITUTION:Three work rolls 2, 4, 6 are arranged at the outer circumference of a center work roll 1 of small dia., shifted approximately 120 deg. respectively, to obtain three screw-down points with four work rolls 1, 2, 4, 6 thereby rolling a strip 5 by almost 2/3 circumference of the roll 1. The dia. D1 of 1st outer work roll 2 at the inlet side and D3 of 3rd outer work roll 4 are made to be almost the same, and the dia. D2 of 2nd outer work roll 6 at the 2nd screw-down point is made larger than that of other work rolls 2, 4 by >=1.5 the dia. of other rolls, and the cold reduction rate at the 2nd screw-down point is restrained

29. 发明专利

JPS57103708A ROLLING MILL TRAIN OF TRI-STAR ROLL 失效
公开(公告)号：JPS57103708A
公开(公告)日：1982-06-28
申请号：JP17808980
申请日：1980-12-18
申请人： NIPPON STEEL CORP
发明人： OOKI TAKASHI , NISHIYAMA YASUYUKI
IPC分类号： B21B1/28 , B21B1/22 , B21B13/00 , B21B13/14
摘要： PURPOSE:To provide a titled rolling mill train which rolls a material to be rolled to approximately uniform surface characteristics on both surfaces and yields products of good quality by disposing a plurality of rolling mills disposed with three pieces of work rolls approximately at equal intervals on the outside circumference of nondriven central work rolls to the mutually opposite roll configuration with the adjacent stands. CONSTITUTION:A strip 12 is uncoiled from an uncoiling reel 11, and is introduced through deflector rolls 16 into a No.1 tri-star roll rolling mill 13, by which it is screwed down simultaneously at three points. In succession to this, the strip 12 out from the mill 3 is supplied to a No.2 tri-star roll rolling mill 14 assuming the opposite roll configuration of the mill 13, and after it is rolled to desired plate thickness by simultaneous screwing-down at three points, it is taken up with a take-up reel 15. As a result, both surfaces of the strip 12 are screwed down under approximately the same conditions are therefore the surface characteristic, shape, etc. are made uniform, and the required forward and backward tensions are approtioned by the mutually adjacent rolling mills.

30. 发明专利

JPS54137793A SHOT BLAST SYSTEM 失效
公开(公告)号：JPS54137793A
公开(公告)日：1979-10-25
申请号：JP4519578
申请日：1978-04-19
申请人： NIPPON STEEL CORP , TAIYO CHUKI KK
发明人： OOKI TAKASHI , ISHIGURO TOSHIYASU , HAMADA IWAO
IPC分类号： B24C7/00
摘要： PURPOSE:For uniforming the collision energy of a polisher with a steel plate for example and the roughness of said steel plate by making the revolutions of a projector following up the transfer speed of said steel plate. CONSTITUTION:The line speed of a steel plate (m) is detected by a detector A, and thus-obtained speed detection signal is fed to a projector revolutions setting section B. Revolutions are selected correspondingly to the previously set value of the transfer speed of said steel plate (m) in accordance with said input signal, and revolutions signal is generated. Said revolutions signal and the signal representing the relative revolutions characteristic curve to the transfer speed of said steel plate of a setting device C are fed to a revolutions controller D, and the revolutions of the driving motor J of said projector are changed by said revolutions controller D to follow up the transfer speed of said steel plate. Thus, the collision energy of a polisher (s) with said steel plate and the roughness of said steel plate are uniformed.

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