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21. 发明专利

JP2001225137A METHOD AND APPARATUS FOR WORKING RUGGEDNESS 失效
公开(公告)号：JP2001225137A
公开(公告)日：2001-08-21
申请号：JP2000039131
申请日：2000-02-17
申请人： NIPPON STEEL CORP
发明人： INOUE TAKESHI , UCHIDA HIDE
IPC分类号： B22D11/06 , B21H1/18
摘要： PROBLEM TO BE SOLVED: To manufacture a slab having stable quality in twin drum sheet continuous casting by using a working method and its apparatus capable of imparting ruggedness with reproducibility. SOLUTION: A roller 6 arranged with protrusions 7 or 8 having some radius of curvature is used, by rotating the roller arranged with the protrusion having the radius of curvature, while pushing with some load on a barrel face of a cooling drum (a face in contact with molten steel) in twin drum strip continuous casting and moving in the axial direction of the drum, the ruggedness is transferred/formed to the cooling drum. By this method, the same ruggedness is easily reproduced, thus, a casting product of stable quality is manufactured.

22. 发明专利

JP2000230182A ROD LIKE LUBRICATING MATERIAL FOR TWIN DRUM TYPE THIN PLATE CONTINUOUS MOLDING 失效
公开(公告)号：JP2000230182A
公开(公告)日：2000-08-22
申请号：JP3026399
申请日：1999-02-08
申请人： NIPPON STEEL CORP
发明人： AZUMA YOSHIAKI , ISHIMORI YUICHI , INOUE TAKESHI
IPC分类号： B22D11/06 , B22D11/10 , B22D11/108 , C10M103/00 , C10M145/04 , C10M145/40 , C10M159/06 , C10N40/20
摘要： PROBLEM TO BE SOLVED: To obtain a lubricating material for twin drum type thin plate continuous molding, capable of realizing a stable continuous molding for a long period of time by stably securing an affinity and a lubricating property at a sliding surface in the case that the end surfaces of a cooling drum and a side barrage are formed by a hard material. SOLUTION: This lubricating material applied on end surfaces 1a, 1b of a cooling drum sliding with a side barrage 2 preceding to the twin drum type thin plate continuous molding and formed as a rod like shape contains a high melting point wax, a water glass, an organic high molecular compound and an oil in the case of using titanium oxide, fluorinated graphite, tungsten sulfide as a main solid lubricating material, or the organic high molecular compound and the oil in a suitable amount in the case of using a phosphate, silicate or borate as a main solid lubricating material. The oil may be mixed to the lubricating material by impregnating.

23. 发明专利

JPH11293270A LUBRICANT FOR HIGH-TEMPERATURE PLASTIC WORKING AND HOT ROLLING USING THE SAME 失效
公开(公告)号：JPH11293270A
公开(公告)日：1999-10-26
申请号：JP10280998
申请日：1998-04-14
申请人： NIPPON STEEL CORP
发明人： ARAYA SHOICHI , HAMAUZU SHUICHI , UCHIDA HIDE , INOUE TAKESHI
IPC分类号： B21B1/22 , B21B27/00 , B21B27/10 , C10M125/10 , C10N10/04 , C10N20/00 , C10N20/06 , C10N40/24 , C10N50/10
摘要： PROBLEM TO BE SOLVED: To obtain a lubricant for high-temp. plastic working which realizes low-friction hot rolling with a friction coefficient of 0.15 or lower without causing defective biting and enables the surface roughening of a roll to be inhibited, and to provide a hot rolling method using the same. SOLUTION: This lubricant comprises a base grease and a calcium carbonate powder dispersed therein, the calcium carbonate content being 10-50 wt.%, the particle size of the calcium carbonate powder being 20 μm or lower, and the consistency (NLGI consistency number) of the lubricant being No. 00 grade or lower. The hot rolling method for steel is characterized in that, in a high- temp. plastic working wherein the tail of the preceding material being rolled and the head of the following material are joined and connected between a rough rolling apparatus and a finish rolling apparatus and the material is then subjected to high-temp. hot rolling at each stand of a series of finish rolling machines, rolling rolls are coated with the lubricant of the invention in a coating wt. of at least 5 g/m to prevent the surface roughening of rolls and to reduce the friction coefficient during rolling to 0.15 or lower.

24. 发明专利

JPH10193068A PRODUCTION OF CR-NI BASE STAINLESS STEEL AND APPARATUS THEREFOR 失效
公开(公告)号：JPH10193068A
公开(公告)日：1998-07-28
申请号：JP450197
申请日：1997-01-14
申请人： NIPPON STEEL CORP
发明人： TERAOKA SHINICHI , INOUE TAKESHI , SHIRAISHI SUSUMU , ARAI TAKASHI , SHODA SHUNJI
IPC分类号： B22D11/00 , B22D11/12 , B22D11/128 , B22D11/14 , B22D11/20 , C21D8/02
摘要： PROBLEM TO BE SOLVED: To produce a hot-rolled steel strip and a cold-rolled steel strip excellent in surface quality and also, workability from a Cr-Ni base stainless steel thin cast slab produced with a continuous casting method. SOLUTION: The Cr-Ni base stainless steel is cast into the thin cast slab S having

25. 发明专利

JPH09276922A HOT ROLLING METHOD 失效
公开(公告)号：JPH09276922A
公开(公告)日：1997-10-28
申请号：JP11434496
申请日：1996-04-12
申请人： NIPPON STEEL CORP
发明人： INOUE TAKESHI , ARAYA SHOICHI , UCHIDA HIDE , YAMAMOTO HIROYASU
IPC分类号： B21B45/02 , B21B1/26
摘要： PROBLEM TO BE SOLVED: To prevent scale flaws and to obtain a thin steel sheet having excellent surface quality by subjecting the steel sheet to hot finish tandem rolling while supplying lubricating oil contg. specific ratios of lubricant compsns., such as CaCO3 , Na2 CO3 and K2 CO3 . SOLUTION: The thin iron or steel material of an ordinary steel is subjected to hot lubrication rolling. At this time, the material is rolled while the lubricating oil contg. >=10wt.% of the lubricant compsns. consisting of >=1 kinds of the CaCO3 , Na2 CO3 and K2 CO3 is supplied in at least the one stand among the first to third stands of the finish tandem rolling mill. The compsns. decompose by coming into contact with the high-temp. material at the roll bites and the formed Cab, Na2 O, K2 O, etc., react with the essential components of the scale of the material. The reaction products are removed by wear, by which the scale thickness is made smaller and uniform. As a result, the scale flaws occurring in the secondary scale are prevented and the productivity of a pickling stage is improved.

26. 发明专利

JPH09276909A PLUG DEVICE FOR PIERCING SEAMLESS STEEL TUBE 失效
公开(公告)号：JPH09276909A
公开(公告)日：1997-10-28
申请号：JP11434596
申请日：1996-04-12
申请人： NIPPON STEEL CORP
发明人： UCHIDA HIDE , WADA YASUHIRO , INOUE TAKESHI , YAMAMOTO HIROYASU
IPC分类号： B21B25/00 , B21B25/06
摘要： PROBLEM TO BE SOLVED: To obtain a plug device for a seamless steel tube having excellent piercing inside surface quality and long life by connecting and fixing the front end side of a low alloy steel subjected to a scale treatment together with the rear end side of ceramics, etc., to a joint part via a coupling shaft. SOLUTION: The plug formed by connecting the front end having the front end gradually increasing toward the rear end and the rear end of a specified diameter in a juncture is connected and fixed to the joint part coupled to a mandrel, by which the plug device for press roll piercing of the seamless steel tube is obtd. The plug 1 of such plug device is dividedly composed of the front end side part 3 consisting of the low alloy steel subjected to the scale treatment and the rear end side part consisting of a cermet material contg. >=50wt.% ceramics or carbide, nitride, boride, oxide having excellent wear resistance and seizure resistance. The front end side part 3 is connected and fixed to the rear end side apart 4 and the joint part 2 connected by means of a threaded part 21 to the mandrel by screwing a nut 7 to the threaded apart 51 of the connecting shaft 5.

27. 发明专利

JPH08253839A ROLLING ROLL AND ROLL FOR HOT ROLLING 失效
公开(公告)号：JPH08253839A
公开(公告)日：1996-10-01
申请号：JP5777895
申请日：1995-03-16
申请人： NIPPON STEEL CORP
发明人： ARAYA SHOICHI , INOUE TAKESHI , UCHIDA HIDE , YAMAMOTO HIROYASU
IPC分类号： B21B27/00 , C22C37/00 , C22C38/00 , C22C38/30 , C22C38/38
摘要： PURPOSE: To produce a rolling roll material excellent in wear resistance and improved in surface roughening resistance owing to the suppression of the peeling of black-skinned scale by specifying the compsn. constituted of C, Si, Mn, Cr, Mo, W, V, Co, P, S and Fe. CONSTITUTION: This rolling roll material is the one having a compsn. contg., by weight, 1.0 to 2.5% C, 0.5 to 2.0% Si, 0.5 to 2.0% Mn, 6.0 to 10.0% Cr, 3.0 to 7.0% Mo, 4.0 to 8.0% W, 6.0 to 10.0% V, 2.0 to 9.0% Co,

28. 发明专利

JPH08136459A CATHODE PLATE FOR GLOW DISCHARGE LIGHT EMISSION SPECTRAL ANALYSIS 失效
公开(公告)号：JPH08136459A
公开(公告)日：1996-05-31
申请号：JP27504194
申请日：1994-11-09
申请人： NIPPON STEEL CORP
发明人： ARAYA SHOICHI , YAMAMOTO HIROYASU , UCHIDA HIDE , INOUE TAKESHI , SUZUKI SHIGERU , UEMURA TETSUO , ARIYOSHI TOMIO
IPC分类号： G01N21/67
摘要： PURPOSE: To enable a specimen whose analytical surface is curved to be analyzed by providing a recessed section the curvature of which is identical to that of a test specimen, for the opening section of the discharge light emitting section of a cathode plate. CONSTITUTION: A recessed section 1a having a curvature identical to that of a test specimen 4 is formed at the opening section 3 side of a discharge light emitting section 2. The recessed section 1a is made larger than the diameter of the opening section 3, and made large enough for an 'O' ring roove 6 to be provided, to which an 'O' ring 5 is inserted so that the light emitting section 2 is kept vacuum. When the curvature of the specimen 4 is changed, the recessed section 1a is made identical in curvature to the specimen 4, and both of them are closely attached, so that no abnormal discharge is induced between the recessed section 1a and the specimen 4. The 'O' ring 5 shall be made of material high in elasticity such as rubber and the like in order to stably keep the light emitting section vacuum. The specimen 4 is supported by support holders 7, and also pressed by a pressing mechanism 8 in such a way as to be closely attached to the opening section 3. By this constitution, the curved surface of the specimen can thereby be analyzed.

29. 发明专利

JPH07214120A METHOD FOR CONTROLLING HOT ROLLING LUBRICATION AND DEVICE THEREFOR 失效
公开(公告)号：JPH07214120A
公开(公告)日：1995-08-15
申请号：JP723294
申请日：1994-01-26
申请人： NIPPON STEEL CORP
发明人： YAMAMOTO HIROYASU , UCHIDA HIDE , INOUE TAKESHI , ARAYA SHOICHI
IPC分类号： B05B7/04 , B05B7/12 , B05B12/08 , B21B27/10 , B21B37/32 , B21B38/12 , B21B45/02 , B21C51/00
摘要： PURPOSE:To make wear of work rolls uniform by measuring the wear distribution in the axial direction of the work rolls during hot rolling and controlling the injection rate of a lubricant emulsion to the work rolls or the concn. of the lubricant according to the measured abrasion loss distribution of the work rolls. CONSTITUTION:The lubricant emulsion having the specified concn. of the lubricant is injected to the surface of the work rolls 2 during hot rolling. The roll surface is operated by moving a gap sensor 17 back and forth to detect the gap between the surfaces of the rolls 2. A process computer 32 calculates the abrasion loss of the work roll surfaces in accordance with the detected gap and determines the required injection rate of the lubricant emulsion. This computer 32 calculates the axial position of the rolls of the gap sensor 17 in accordance with the number of revolutions of a motor detected by a rotary encoder 15. The computer outputs operation signals to respective lubricant emulsion flow rate control solenoid valves 24. These flow rate control solenoid valves 24 inject the lubricant emulsion at the flow rates meeting the abrasion loss of the rolls.

30. 发明专利

JPH06234989A LUBRICANT FOR HOT ROLLING AND METHOD OF SUPPLYING THE LUBRICANT 失效
公开(公告)号：JPH06234989A
公开(公告)日：1994-08-23
申请号：JP31533793
申请日：1993-12-15
申请人： NIPPON STEEL CORP
发明人： INOUE TAKESHI , YAMAMOTO HIROYASU , UCHIDA HIDE , NISHIDA KIYOSHI , SUGIURA TSUTOMU
IPC分类号： B21B27/10 , B21B45/02 , B21C9/00 , C10M103/02 , C10M103/06 , C10M107/32 , C10M125/26 , C10M173/00 , C10N20/06 , C10N30/04 , C10N30/06 , C10N30/08 , C10N40/24
摘要： PURPOSE:To reduce the wear and seizing of pressure rolls and tools while maintaining the stable intake and passage of the work by homogeneously dispersing a solid lubricant excellent in antiwear and anti-seizing properties into water, which is ineffective in reducing coefficient of friction. CONSTITUTION:The lubricant is obtained by mixing swellable mica having an average particle diameter of 20mum or smaller with water at a concentration lower than 10wt.% but not lower than 1wt.% and mixing a powdery solid lubricant therewith. It may further contain 1 to 10wt.% resin, by which a higher deposition efficiency is attainable. The feeding of the title lubricant is initiated before a work reaches the rolls, and ceased after the whole work has passed through the rolling machine. Thus, seizing can be prevented along the whole length of the coil.

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