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1. 发明专利

JPH11197719A COOLING METHOD OF WORK ROLL IN HOT ROLLING MILL 失效
公开(公告)号：JPH11197719A
公开(公告)日：1999-07-27
申请号：JP250298
申请日：1998-01-08
申请人： NIPPON STEEL CORP
发明人： YAKUBO TAKESHI , HORIBE YASUTAKA
IPC分类号： B21B1/26 , B21B27/10
摘要： PROBLEM TO BE SOLVED: To provide a cooling method of a work roll in a hot rolling mill which improves the rolling precision of stock to be rolled owing to the thermal deformation of the work roll by surely cooling the work roll in the hot rolling mill with a small quantity of cooling water and is capable of reducing the fall of productivity owing to the stop of rolling by improving the durability of the work roll and restraining the frequency of exchange of the work roll. SOLUTION: In the cooling method of the work roll in the hot rolling mill, cooling water is injected from a cooling water injection nozzle which is arranged in the vicinity of the outlet side of stock to be rolled in the work roll in the hot rolling mill, a gap part is maintained between the cooling water injection nozzle tip and the work roll, and the work roll is cooled while interposing a cooling water film in the gap part. It is preferable that the gap part between the cooling water injection nozzle tip and the work roll is maintained to 0.1-0.6 mm, and the work roll is cooled while interposing the cooling water film in the gap part.

2. 发明专利

JPH06265335A SURFACE ROUGHENING DETECTOR FOR PRESSURE ROLL 失效
公开(公告)号：JPH06265335A
公开(公告)日：1994-09-20
申请号：JP5049293
申请日：1993-03-11
申请人： NIPPON STEEL CORP
发明人： ITO TAKA , KAWAMURA KUNIO , HORIBE YASUTAKA
IPC分类号： B21B28/00 , B21B38/00 , B21C51/00 , G01B11/30
摘要： PURPOSE:To directly detect roughness of a surface of a pressure roll and to sense degree of a local surface roughening, wear by providing surface roughness measuring unit to be scanned on the surface of the roll in an axial direction near at the roll. CONSTITUTION:A noncontact type surface roughness measuring unit 2 having a semiconductor laser is provided at a position near a pressure roll 1, and guided via a guide rail 4. A surface of the roll 1 is always monitored by a camera 3 from a position separate from the roll 1 during rolling or between rollings, and when a malfunction is discovered on the surface of the roll, the unit 2 is moved to a malfunction position. The position is scanned by the unit 2 to detect surface roughness of the roll 1. A roll surface grade of the roll 1 is altered according to roll surface roughness. Since a flaw grade of a steel plate is altered by a variation in the roll surface grade, the roll 1 is recombined in response to the surface roughening state of the surface of the roll to stabilize quality of a product. The unit 2 is always scanned, and the surface roughness of the roll 11 may be detected.

3. 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.

4. 发明专利

JPH08143882A LUBRICANT COMPOSITION FOR HOT ROLLING OF STEEL MATERIAL 失效
公开(公告)号：JPH08143882A
公开(公告)日：1996-06-04
申请号：JP28958894
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 , SAKAKIBARA MASAYOSHI , KAMIYASHIKI HIROSHI , IHARA HAJIME
IPC分类号： B21B27/10 , C10M125/26 , C10N20/02 , C10N30/06 , C10N30/10 , C10N40/24
摘要： PURPOSE: To obtain a lubricant composition for hot rolling excellent in durability, capable of extremely suppressing growth of black film (oxidized film) onto the surface of hot rolling roll and preventing burning of the roll and the rolling material and excellent in durability by adding a prescribed amount of oil suspension of boric acid, etc., to base oil. CONSTITUTION: This lubricant composition for hot rolling is obtained by adding (B) >=10wt.% of oil suspension of boric acid and/or a boric acid salt to (A) a base oil which is a mixture of one or two or more oils among a mineral oil such as spindle oil, a synthetic oil such as silicone, oil and fat such as tallow and a synthetic ester. Furthermore, the dynamic viscosity of the lubricant composition is preferably /s at 40 deg.C.

5. 发明专利

JPH1015605A DEVICE FOR GREASING ROLL BEARING OF ROLL CHOCK OF ROLLING MILL 失效
公开(公告)号：JPH1015605A
公开(公告)日：1998-01-20
申请号：JP17376596
申请日：1996-07-03
申请人： NIPPON STEEL CORP , TAIHEI KOGYO KK
发明人： HORIBE YASUTAKA , SAKABE KENTA , NISHIKAWA TETSUHEI , CHAIE TETSUO
IPC分类号： F16N11/00 , B21B31/07
摘要： PROBLEM TO BE SOLVED: To provide a device for quickly and surely greasing the roll chock of a rolling mill. SOLUTION: Plural male couplers 5, 5a or female couplers 1, 1a and expandable/reducible guide rod 2 are arranged on a member 4 on the greasing side, coupler connecting parts are formed on the outer peripheries of the male couplers 5, 5a or the inner peripheries of the female couplers 1, 1a, the member 4 is composed so as to be freely movable back and forth and also the female couplers 1, 1a or the male couplers 5, 5a and a guide hole 12 are arranged on the roll chock 9.

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