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61. 发明专利

JPH01197007A ROLLING ROLL COATED WITH CERAMIC OR CERMET 失效
公开(公告)号：JPH01197007A
公开(公告)日：1989-08-08
申请号：JP1960588
申请日：1988-02-01
申请人： NIPPON STEEL CORP
发明人： INOUE TAKESHI , YAMAMOTO TOYOKI , KATO OSAMU
IPC分类号： B21B27/00
摘要： PURPOSE:To prolong the service life of a rolling roll by setting the difference of hardness between a base material surface and a ceramic or cermet coat as a specified Shore hardness difference. CONSTITUTION:In manufacturing a composite rolling roll having a ceramic or cermet coat, the surface hardness of the base material of the roll is elevated at first by ion implantation or heat treatment such as quenching and tempering. Then, the ceramic or cermet coat is formed by the CVD method through gaseous phase reaction and surface reaction. In this case, the difference of hardness between the base material of the roll and the joint of the coat is set so that the Shore hardness does not exceed 30. When the Shore hardness difference does not exceed 30, a curve 1 of the number of rolling to start the peeling of coat rises and peels from the number 2 of rolling in the limit of usage of the roll. In this way, the composite roll is prevented from peeling from the coat, and the service life of the rolling roll is prolonged.

62. 发明专利

JP2003183766A TOOL MATERIAL FOR HOT WORKING 审中-公开
公开(公告)号：JP2003183766A
公开(公告)日：2003-07-03
申请号：JP2001380361
申请日：2001-12-13
申请人： NIPPON STEEL CORP
发明人： UCHIDA HIDE , INOUE TAKESHI , MIYATAKE MASAYUKI , SAKABE KENTA
IPC分类号： B21B27/00 , B21B27/03 , C22C33/04 , C22C33/08 , C22C37/00 , C22C37/06 , C22C37/10 , C22C38/00 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To provide improvement of the product quality and the productivity for a tool for hot working, and reduction of the unit consumption of a tool material, by improving abrasion resistance and thermal cracking resistance of the tool material. SOLUTION: The tool material for hot working superior in abrasion resistance and thermal cracking resistance has a main composition comprising, by mass%, 1.0-3.0% C, 0.3-2.0% Si, 0.1-2.0% Mn, 2.0-10.0% Cr, 0.5-7.0% Mo, 2.0-15.0% V, 0.05-2.0% Al, and the balance Fe with unavoidable impurities, and includes 0.001-0.2% of at least one of Mg, Ca, and Ce, preferably, further 0.01-2.0% at least one of Ti and Zr, or 0.002-0.02% B, to refine and uniformized carbides therein. COPYRIGHT: (C)2003,JPO

63. 发明专利

JP2002079303A DEVICE AND METHOD FOR SUPPLYING SOLID LUBRICANT 审中-公开
公开(公告)号：JP2002079303A
公开(公告)日：2002-03-19
申请号：JP2001195180
申请日：2001-06-27
申请人： NIPPON STEEL CORP
发明人： INOUE TAKESHI , UCHIDA HIDE
IPC分类号： B21B27/10
摘要： PROBLEM TO BE SOLVED: To provide a device and method for feeding a solid lubricant which is applicable to a rolling mill having a very small roll region where the feed of a lubricant is required. SOLUTION: A 1st feeding device is provided with a solid lubricant feeding part in which a solid lubricant moving plate for pressing the solid lubricant against the lubricating surface of a roll and pulling back the lubricant, a driving force transmitting means for transmitting driving force for performing at least either pressing the lubricant against the solid lubricant moving plate or pulling back the lubricant and a driving device which is connected to the driving force transmitting device so that the driving force is transmitted to the driving force transmitting device. A 2nd feeding device is provided with a solid lubricant charging guide in which a piston is incorporated and with which the solid lubricant is charged, a driving force transmitting part for transmitting force by which the solid lubricant is pressed against the lubricating surface of the roll and pulled back from the surface and a driving device in which a pressurizing piston for pulling-back force on the driving force transmitting part is incorporated. This feeding method can be practiced by the above devices.

64. 发明专利

JP2001293505A METHOD FOR SUPPLYING SOLID LUBRICANT 失效
公开(公告)号：JP2001293505A
公开(公告)日：2001-10-23
申请号：JP2000109659
申请日：2000-04-11
申请人： NIPPON STEEL CORP
发明人： INOUE TAKESHI , UCHIDA HIDE
IPC分类号： B21B27/06 , C10M101/02 , C10M103/02 , C10M105/68 , C10N40/24 , C10N50/08
摘要： PROBLEM TO BE SOLVED: To provide a supply method by which the supply time and supply quantity of a solid lubricant are adjustable. SOLUTION: By detecting the substantial pressing pressure of the solid lubricant in the part of a roll while supplying the solid lubricant in accordance with preset supply speed to the part of the roll of a rolling mill which necessitates lubrication, when the substantial pressing pressure is raised or lowered than the pressing pressure which acts constant at the preset supply speed, the preset supply speed is decelerated or accelerated. Furthermore, by detecting the substantial displacing speed of the solid lubricant in the part of the roll while supply by pressing the solid lubricant in accordance with the preset pressing pressure to the part of the roll of the rolling mill which necessitates the lubrication when the substantial displacing speed is increased or decreased than the displaying speed which acts constant at the preset pressing pressure, the preset pressing pressure is lowered or raised.

65. 发明专利

JP2001288491A HOT ROLLING PROCESS 失效
公开(公告)号：JP2001288491A
公开(公告)日：2001-10-16
申请号：JP2000103333
申请日：2000-04-05
申请人： NIPPON STEEL CORP
发明人： ARAYA SHOICHI , UCHIDA HIDE , INOUE TAKESHI
IPC分类号： B21B1/26 , B21B27/10 , C10M103/06 , C10M171/00 , C10N10/04 , C10N20/02 , C10N40/24 , C10N50/10
摘要： PROBLEM TO BE SOLVED: To provide a hot rolling process whereby low-friction hot rolling can be realized at a coefficient of friction of 0.15 or below without encountering poor bite at the stand of each finishing rolling mill provided with abrasion- resistant cast iron work rolls, and the surface roughening of work rolls can be prevented. SOLUTION: Provided is process for hot-rolling steel in such a manner that the tail of each preceding rolled stock is joined to the head of the following workpiece between a roughing rolling mill and a plurality of finishing rolling mills, wherein all of the rolling stands of finishing rolling mills are composed of abrasion-resistant work rolls, and a lubricant containing 20-70 mass % alkaline earth metal carbonate and 30-80 mass % grease of a consistency (an index representing the viscosity of a grease) of 0 is applied to each rolling roll in a coating amount of 2 g/m2 or above to prevent roll surface roughening and to lower the coefficient of friction to 0.15 or below during rolling.

66. 发明专利

JP2000312903A HOT ROLLING METHOD 失效
公开(公告)号：JP2000312903A
公开(公告)日：2000-11-14
申请号：JP12411199
申请日：1999-04-30
申请人： NIPPON STEEL CORP
发明人： ARAYA SHOICHI , UCHIDA HIDE , HAMAUZU SHUICHI , INOUE TAKESHI
IPC分类号： B21B1/26 , B21B27/10 , C10M101/00 , C10M105/32 , C10M159/24 , C10M169/04 , C10N10/04 , C10N30/10 , C10N40/24
摘要： PROBLEM TO BE SOLVED: To prevent surface roughing of rolling rolls without causing bite failure even when high lubricant rolling is done at a specific value or less of friction coefficient by using wear-resisting work rolls at all the stands of the finishing mill and supplying a specific amount or more of lubricant containing highly basic alkaline earth metal sulfonate, mineral oil, and ester to the work rolls. SOLUTION: A rear end portion 3 of a preceding material and front end portion 4 of a following material are jointed between a rough rolling mill 1 and a finishing mill 2. A lubricant of 5 cc/m2 containing one or two types of alkaline earth metal sulfonate, for example, Ca sulfonate, is sprayed to the rolling rolls at an inlet side of each stand from lubricant nozzles 7, thus realizing high lubrication rolling at 0.15 or less of friction coefficient when rolling. This jointing is sequentially done for following materials, thus integrating the following material and the preceding material, so as to eliminate the problem of bite at the leading end of a slab, unlike the rolling-in of one slab at a time.

67. 发明专利

JP2000301217A LUBRICATED ROLLING METHOD AND LUBRICATED ROLLING DEVICE USING SOLID LUBRICANT 失效
公开(公告)号：JP2000301217A
公开(公告)日：2000-10-31
申请号：JP34802199
申请日：1999-12-07
申请人： NIPPON STEEL CORP
发明人： INOUE TAKESHI , UCHIDA HIDE , ARAYA SHOICHI , NORIMOTO MASAYUKI , HAMAUZU SHUICHI
IPC分类号： B21B27/10 , C10M101/02 , C10M103/02 , C10M109/00 , C10N40/24 , C10N50/08
摘要： PROBLEM TO BE SOLVED: To prevent intermission of contact supply of a solid lubricant and oversupply caused by melting-down of the lubricant by supplying the solid lubricant to a work roll in at least one position between an upper position higher than the axial center of an upper work roll and a lower position lower than the axial center of a lower work roll and shielding radient heat from a material to be rolled to the solid lubricant. SOLUTION: Solid lubricant pushing-in devices 1 on which the solid lubricant 2 are mounted are provided in a solid lubricant supplying regions X where are apart from the positions of the axial centers 4, 4 of the upper and lower work rolls 3, 3 and in opposite positions of the material 5 to be rolled. It is preferable to provide the piping of cooling water and cooling water nozzles of a cooling system on the solid lubricant pushing-in device 1. In this way, the temperature rising of the solid lubricant 2 is prevented and the melting-down is evaded. By providing a heat shielding plate between the solid lubricant pushing-in device 1 and the material 5 to be rolled, the heat radiation from the material 5 to be rolled is prevented and the temperature rising of the solid lubricant 2 is prevented. By these measures, an extent of consumption of the solid lubricant 2 of >=50% is reduced.

68. 发明专利

JP2000197901A CALIBER ROLLING METHOD BY SOLID LUBRICATION 失效
公开(公告)号：JP2000197901A
公开(公告)日：2000-07-18
申请号：JP30142799
申请日：1999-10-22
申请人： NIPPON STEEL CORP
发明人： INOUE TAKESHI , UCHIDA HIDE , ARAYA SHOICHI , HAMAUZU SHUICHI
IPC分类号： B21B1/08 , B21B27/06 , B21B27/10 , C10M109/00 , C10N40/24 , C10N50/08
摘要： PROBLEM TO BE SOLVED: To provide a caliber rolling method by which wear in thrust collar parts of a grooved roll is reduced. SOLUTION: By supplying a solid lubricant to the thrust collar parts where there are sliding faces of upper and lower grooved rolls, solid lubrication between both the grooved rolls is executed in the sliding faces. By selectively executing the solid lubrication of, especially, the thrust collar parts of the whole of the groove, the wear in the thrust collar parts is remarkably reduced without fear that failure such as slip or the like between the roll and a material to be rolled by unnecessarily lubricating the other part of the groove occurs. A typical solid lubricant consists of a wax-base solid lubricant and the wax-base solid lubricant to which a solid lubricant is added.

69. 发明专利

JPH11129016A METHOD OF MANUFACTURING HOT-STEEL PLATE WITH GOOD TIGHT-SCALE PROPERTIES 失效
公开(公告)号：JPH11129016A
公开(公告)日：1999-05-18
申请号：JP31289197
申请日：1997-10-30
申请人： NIPPON STEEL CORP
发明人： ARIGA TAKASHI , INOUE TAKESHI
IPC分类号： B21B39/00 , B21B1/26 , B21B45/00 , C21D1/70
摘要： PROBLEM TO BE SOLVED: To offer a method of manufacturing a hot rolled steel plate with good tight-scale properties by controlling the generation of blister during finishing, and thus preventing the generation of abnormal scale such as double scale. SOLUTION: In the hot-rolled steel plate manufacturing method in which hot finishing is done immediately after descaling, the steel plate carrying time from a descalig equipment to the first stand of a hot finishing mill is set to 5 seconds or less, or controlled by the formula shown below in accordance with the steel plate temperature, and thus blister generation is controlled and tight scale is achieved. If the steel plate temperature is assumed to be T ( deg.C) and carrying time t (sec): Formula (I) T>(16t +1760t-9200) +1020, when T>1020 deg.C or Formula (II) T +1760t-9200) +1020, when T

70. 发明专利

JPH09271814A HOT LUBRICATION ROLLING METHOD 失效
公开(公告)号：JPH09271814A
公开(公告)日：1997-10-21
申请号：JP10863196
申请日：1996-04-05
申请人： NIPPON STEEL CORP
发明人： INOUE TAKESHI , ARAYA SHOICHI , UCHIDA TAKASHI , YAMAMOTO HIROYASU
IPC分类号： B21B27/10
摘要： PROBLEM TO BE SOLVED: To execute rolling capable of preventing surface flaw while securing friction force by alternately arranging a lubricant supply region and lubricant non-supply region on the surface of a hot rolling roll in the roll axial direction and supplying lubricant. SOLUTION: When hot rolling a metal by using a work roll, a lubricant supply region 3 to supply lubricant and a lubricant non-supply region 4 not to supply lubricant are arranged alternately in the roll axial direction and symmetrical to the center line. By this method, in the lubricant supply region 3, wear and seizure of the roll is reduced and in the lubricant non-supply region, the required biting performance for rolling is secured.

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