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91. 发明专利

JP2000202507A CALIBER ROLLING METHOD BY SOLID LUBRICATION 失效
公开(公告)号：JP2000202507A
公开(公告)日：2000-07-25
申请号：JP30257899
申请日：1999-10-25
申请人： NIPPON STEEL CORP
发明人： INOUE TAKESHI , UCHIDA HIDE , ARAYA SHOICHI , HAMAUZU SHUICHI
IPC分类号： B21B1/085 , B21B1/08 , B21B1/082 , B21B1/088 , B21B27/10
摘要： PROBLEM TO BE SOLVED: To provide a method for executing caliber rolling by supplying the necessary amount of a lubricant to only the necessary part of grooved rolls to surely prevent the burning and wear of the grooved rolls without generating rolling slip and biting slip. SOLUTION: By pressing a solid lubricant against parts where the burning and wear of the grooved rolls are liable to be generated, solid lubrication between the grooved rolls and a material to be rolled is executed. By making the solid lubricant into a proper shape or proper dimensions, supplying parts are easily controlled and the supply is strictly controlled by pressing force, hardness and fusing point of the lubricant itself. Then, without generating the rolling slip and biting slip caused by undesirable lubrication to unnecessary parts and, simultaneously, by securing the optimum lubricated state where sufficient lubricant is supplied to the necessary parts, the generation of the burning and wear of the grooved rolls is prevented. A typical solid lubricant consists of a wax-base solid lubricant alone or the one in which a solid lubricant is added to the wax-base solid lubricant.

92. 发明专利

JPH11290903A HOT ROLLING METHOD 失效
公开(公告)号：JPH11290903A
公开(公告)日：1999-10-26
申请号：JP10280898
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： B21B1/26 , B21B27/10
摘要： PROBLEM TO BE SOLVED: To efficiently obtain lubrication effect and to remarkably reduce the coefficient of friction at the time of rolling by jetting a lubricant after executing dewatering of both work rolls and back-up rolls, joining the rear end of a hot preceding material to the tip of the hot succeeding material and executing hot finish rolling. SOLUTION: By connecting the rear end of the hot preceding material heated in a heating furnace to the tip of the hot succeeding material, endless rolling is executed. In the hot finish rolling, lubricated rolling is executed by jetting a lubricant from lubricant supply nozzles 3 to the work rolls 1 and back-up rolls 2 for rolling a rolled stock 13 and also cooling is executed jetting cooling water from cooling water supply nozzles 4 to the work rolls 1. In this way, by directly sticking the lubricant to the work rolls 1 and also transferring the lubricant from the back-up rolls 2, the lubricant is sufficiently stuck to the work rolls 1 and highly lubricated rolling is enabled. At this time, it is preferable to remove sticking water from the lubricant sticking surfaces by providing a de-watering wipers 10, 11, 12.

93. 发明专利

JPH1110288A CONTINUOUSLY CAST THIN SLAB AND CASTING METHOD THEREFOR 失效
公开(公告)号：JPH1110288A
公开(公告)日：1999-01-19
申请号：JP16296897
申请日：1997-06-19
申请人： NIPPON STEEL CORP
发明人： ARAI TAKASHI , MIZUCHI ISAO , INOUE TAKESHI
IPC分类号： B22D11/06
摘要： PROBLEM TO BE SOLVED: To prevent the surface crack on a thin cast slab and the surface flaw caused by projecting transfer of recessed part arranged on roll peripheral surface in a twin roll type continuous casting, to simplify the forming process for the recessed parts and to extend the service life of the recessed parts. SOLUTION: In the method for continuously casting into the thin cast slab C by continuously supplying molten metal into a molten metal pool part 3 formed at the upper part of a gap between one pair of the cooling rolls 1, 1 rotating mutually in the reverse direction, on the peripheral surfaces of the cooling rolls l, 1, the recessed parts having 400-2000 μm diameter and 10-200 μm depth are formed at 30-70% area ratio. The ruggedness having 400-2000 μm diameter and 10-150 μm height is formed on the surface of the thin cast slab C by adjusting ratio of argon gas possessed in nitrogen gas in a seal chamber 4, and also, an angle formed between the inclining surface of the ruggedness and the surface of the thin cast slab is controlled to

94. 发明专利

JPH10225702A AUTOMATIC DIMENSION CONTROLLING METHOD OF SHAPES EDGER ROLLING 失效
公开(公告)号：JPH10225702A
公开(公告)日：1998-08-25
申请号：JP3080397
申请日：1997-02-14
申请人： NIPPON STEEL CORP
发明人： YAMAMOTO HIROYASU , SEKI KAZUNORI , INOUE TAKESHI , ARAYA SHOICHI
IPC分类号： B21B37/00 , B21B1/08 , B21B1/085 , B21B37/16
摘要： PROBLEM TO BE SOLVED: To obtain the high dimensional precision with a simple controlling method and equipment by regulating the amount of roll clearance of horizontal rolls of an edger rolling mill based on the corrective amount of roll clearance of vertical rolls of an universal rolling mill. SOLUTION: In a shapes rolled steel 3, the shapes height is measured with a shapes height measuring instrument 4 at the outlet side of a finish universal rolling mill. The shapes height measuring instrument 4 outputs the signal of shapes height to a computing element 5. The computing element 5 obtains the deviation of the measured shapes height against the target value and operates the corrective amount of roll clearance with this deviate and a prescribed equation. This operated result is outputted to a horizontal roll controller 6 of a horizontal roll screw down device 8 and a vertical roll controller 7 of a horizontal/vertical roll screw down device. In an edger rolling mill, the amount of roll clearance of a horizontal roll 1 is executed with feed forward controlling in a controlling period. The controlling period is matched to the controlling period of the vertical roll of the fore stage universal mill.

95. 发明专利

JPH10195598A ROLLING ROLL MATERIAL AND ROLL FOR HOT ROLLING 失效
公开(公告)号：JPH10195598A
公开(公告)日：1998-07-28
申请号：JP183697
申请日：1997-01-09
申请人： NIPPON STEEL CORP
发明人： ARAYA SHOICHI , INOUE TAKESHI , UCHIDA HIDE , YAMAMOTO HIROYASU , HAMAUZU SHUICHI
IPC分类号： B21B27/00 , C22C38/00 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To improve the yield of productivity and the surface quality of a rolled product by suppressing the generation of seizure in a rolling roll. SOLUTION: This rolling roll material is the one having a compsn. contg., by weight, 1.5 to 2.0% C, 0.5 to 2.0% Si, 0.5 to 2.0% Mn, 4.0 to 6.0% Cr, 1.5 to 6.0% Mo, 2.0 to 5.0% W, 2.0 to 5.0% V, 1.0 to 10.0% Co,

96. 发明专利

JPH08143881A LUBRICANT COMPOSITION FOR HOT ROLLING OF STEEL MATERIAL 失效
公开(公告)号：JPH08143881A
公开(公告)日：1996-06-04
申请号：JP28958794
申请日：1994-11-24
申请人： NIPPON STEEL CORP , KYODO YUSHI
发明人： YOSHIDA MASANARI , HORIBE YASUTAKA , YAMAMOTO HIROYASU , INOUE TAKESHI , SHIRATA MASANORI , MORIUCHI TSUTOMU , KAMIYASHIKI HIROSHI , IHARA HAJIME
IPC分类号： B21B27/10 , C10M111/02 , C10N10/04 , C10N20/00 , C10N20/02 , C10N20/06 , C10N40/24
摘要： PURPOSE: To obtain a lubricant composition for hot rolling of steel material, capable of producing and keeping stable black film (oxidized film) onto the surface of a hot rolling roll by adding a prescribed amount of highly basic calcium phenate to a base oil. CONSTITUTION: This lubricant composition for hot rolling of steel is obtained by adding (B) 30-90wt.% of highly basic calcium phenate having >=100mgKOH base value to (A) a base oil which is a mixture of one or two more kinds of oils among a mineral oil such as spindle oil, a synthetic oil such as silicone oil, oil and fat such as tallow and a synthetic ester. Dynamic viscosity of the lubricant composition is preferably /s at 40 deg.C.

97. 发明专利

JPH0881732A ROLL FOR HOT ROLLING 失效
公开(公告)号：JPH0881732A
公开(公告)日：1996-03-26
申请号：JP21989794
申请日：1994-09-14
申请人： NIPPON STEEL CORP
发明人： UCHIDA HIDE , ARAYA SHOICHI , INOUE TAKESHI , YAMAMOTO HIROYASU
IPC分类号： B21B27/00 , B21B27/02 , C22C38/00 , C22C38/40
摘要： PURPOSE: To reconcile the wear resistance and the thermal cracking resistance and attempt the high quality and cost reduction and reduce the consumption unit as a roll material used in hot rolling in the production of iron steel, particularly, in a continuous hot rolling process, rough rolling or the like. CONSTITUTION: A foll ror hot rolling in which 30 to 500μm scales are applied to the surface layer of a low alloy steel contg., as chemical compsn., by weight, 0.05 to 0.5% C, 0.3 to 4% Cr, 0.5 to 4% Ni, and the balance Fe with inevitable elements is applied, by which its thermal cracking resistance can remarkably be improved without impairing its wear resistance, and the high quality of the product and reduction in the consumtion unit of the roll are attempted.

98. 发明专利

JPH07214121A METHOD FOR CONTROLLING HOT ROLLING LUBRICATION AND DEVICE THEREFOR 失效
公开(公告)号：JPH07214121A
公开(公告)日：1995-08-15
申请号：JP723394
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 , B21B45/02
摘要： PURPOSE:To prevent surface roughening and seizure of the black skins of work rolls or draw-in rolls according to a slip and to improve product quality by controlling a mixing ratio of a lubricating mica-based lubricant emulsion and an oil agent lubricant-based emulsion according to a measured forward slip. CONSTITUTION:The lubricant emulsion mixture of the previously set mixing ratio is injected at a specified flow rate to the surfaces of the work rolls 2 during hot rolling. A controller 42 determines the mixing ratio to attain 0 =10% in accordance with the measured forward slip f. This controller 4 outputs an operation signals to an oil agent-based lubricant emulsion supply pump 33 and a lubricating mica-based lubricant emulsion supply pump 37 according to the determined mixing ratio. The emulsion supply pumps 33, 37 of the oil agent-based lubricant emulsion and the lubricating mica-system lubricant supply both lubricant emulsions of the flow rates to attain the mixing ratio meeting the forward slip f to a mixer 31. The required ratio of the lubricant emulsion mixture is then injected from the lubricant emulsion mixture injection nozzle 23.

99. 发明专利

JPH07148507A METHOD FOR PIERCING SEAMLESS TUBE 失效
公开(公告)号：JPH07148507A
公开(公告)日：1995-06-13
申请号：JP29848093
申请日：1993-11-29
申请人： NIPPON STEEL CORP
发明人： UCHIDA HIDE , ARAYA SHOICHI , INOUE TAKESHI , YAMAMOTO HIROYASU
IPC分类号： B21B19/04 , B21B25/04 , C10M103/04
摘要： PURPOSE:To improve the service life of a plug to be used in the piercing process when the seamless alloy steel tube is manufactured, and to improve the basic unit of the tool, the productivity and the quality of the inner surface. CONSTITUTION:In the seamless tube piercing method, the service life is improved by reducing the load due to the lubrication effect and supplementing the surface scale of a plug 3 through the piercing after the lubricant containing the graphite crystallized cast iron powder is preliminarily coated on the surface of the plug 3 to be used in the process where a square billet 1 is drilled by the press roll piercing method (advance-piercing).

100. 发明专利

JPH07126682A LUBRICANT FOR HOT WORKING 失效
公开(公告)号：JPH07126682A
公开(公告)日：1995-05-16
申请号：JP27283493
申请日：1993-10-29
申请人： NIPPON STEEL CORP
发明人： NISHIDA KIYOSHI , KONO TAKUMI , INOUE TAKESHI , YAMAMOTO HIROYASU
IPC分类号： C10M173/02 , C10N20/00 , C10N20/02 , C10N30/08 , C10N40/24 , C10N50/08
摘要： PURPOSE:To obtain a lubricant for hot working, useful in the hot working of a steel material (common steel, stainless steel or high-alloy steel, etc.) such as a thin plate, a steel pipe, a thick plate or a wiry material and enabling good hot working such as prevention of the seizure by feeding thereof to a contact surface of a working tool such as a roll and a material to be worked. CONSTITUTION:This lubricant for hot working is obtained by adding and mixing a substance which is insoluble in water without swelling and has the melting point and/or a softening point within the range of

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