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11. 发明专利

JP2574607B2 失效
公开(公告)号：JP2574607B2
公开(公告)日：1997-01-22
申请号：JP23705892
申请日：1992-09-04
申请人： KAWASAKI STEEL CO
发明人： HAYAKAWA YASUYUKI , NISHIIKE UJIHIRO , FUKUDA BUNJIRO , YAMADA MASATAKA , OOISHI TETSUYA , YOSHIDA SHIGERU , SHIMIZU HIROSHI
IPC分类号： C21D1/70 , C21D8/12 , C21D9/46 , C23C22/00 , H01F1/16

12. 发明专利

JPH05156360A MANUFACTURE OF GRAIN-ORIENTED SILICON STEEL SHEET GOOD IN IRON LOSS 失效
公开(公告)号：JPH05156360A
公开(公告)日：1993-06-22
申请号：JP32058991
申请日：1991-12-04
申请人： KAWASAKI STEEL CO
发明人： HAYAKAWA YASUYUKI , KOMATSUBARA MICHIRO , NISHIIKE UJIHIRO , FUKUDA BUNJIRO , YAMADA MASATAKA
IPC分类号： C21D8/12 , H01F1/16
摘要： PURPOSE:To grain refine secondary recrystallized grains of a steel sheet without deteriorating its productivity and consequently to improve 3 its magnetic properties particularly in iron loss properties. CONSTITUTION:At the time of manufacturing a grain-oriented silicon steel sheet, heat treatment of holding it to the temp. range of 150 to 500 deg.C for 30sec to 3hr is executed at least for one time between passes in the final cold rolling stage, and after that, rolling is executed at 100 to 250 deg.C by >=1 pass.

13. 发明专利

JPS6360003A METHOD AND DEVICE FOR HOT ROLLING 失效
公开(公告)号：JPS6360003A
公开(公告)日：1988-03-16
申请号：JP20375086
申请日：1986-09-01
申请人： KAWASAKI STEEL CO
发明人： YORIFUJI AKIRA , ABE HIDEO , MATSUZAKI MINORU , YAMADA MASATAKA , TANOMURA TADAO
IPC分类号： B21B13/08
摘要： PURPOSE:To prevent the formation of the surface linear flaws to be generated at the ends of a rolled sheet product by adding a stage for rolling only the edge parts of a rolled stock by using rolls having the axes of rotation perpendicular to the progressing direction of the rolling stock and inclined with the sheet plane to a rolling stage consisting of hot vertical and horizontal rollings. CONSTITUTION:A hot rolling device is disposed with an edge part rolling device 12 between a vertical rolling mill 27 and a horizontal rolling mill 28. The device 12 is provided with four pieces of the rolls 13 for rolling the edge parts having the axes of rotation perpendicular to the progressing direction and inclined with the sheet plane. The stage for rolling only the edge parts of the material 10 to be rolled is thus added to the hot rolling stage for the material 10 consisting of the vertical rolling and horizontal rolling. The formation of the surface linear flaws to be generated at the sheet ends of the rolled product is thereby prevented.

14. 发明专利

JP2003112941A GRANULAR INORGANIC FIBER COTTON, AND PRODUCTION METHOD THEREFOR 审中-公开
公开(公告)号：JP2003112941A
公开(公告)日：2003-04-18
申请号：JP2001304491
申请日：2001-09-28
申请人： KAWASAKI STEEL CO , KAWATETSU ROCK FIBER KK
发明人： NAGAO TOMOKAZU , TAKANO SHIGERU , YAMADA MASATAKA , SATO MASAAKI
IPC分类号： C03B37/10 , C04B35/653 , D04H1/587 , D06M15/263
摘要： PROBLEM TO BE SOLVED: To provide granular inorganic fiber cotton which has a bulk density suitable for a blowing method requiring lightening, and is carriable under compressive packaging, and whose bulk density can be restored to the lightweight one for use, and to provide a method for producing granular inorganic fiber cotton. SOLUTION: A melted inorganic matter is made into fiber, and the fiber is collected in a cotton state and granulated. In this case, while the remaining heat of the inorganic fiber drops to an ordinary temperature, a resin emulsion forming a resin film having the lowest film production temperature of =10 deg.C is stuck in an amount of >1 mass% expressed in terms of an emulsion solid content to the inorganic resin to produce the granular inorganic fiber cotton. The granular inorganic fiber cotton has a bulk density of , and the bulk density is restored to the original one when the cotton is released from a temporarily compressed state.

15. 发明专利

JPH0797631A PRODUCTION OF HIGH MAGNETIX FLUX DENSITY GRAIN ORIENTED SILICON STEEL SHEET EXCELLENT IN MAGNETIC PROPERTY AND FILM PROPERTY 失效
公开(公告)号：JPH0797631A
公开(公告)日：1995-04-11
申请号：JP24500893
申请日：1993-09-30
申请人： KAWASAKI STEEL CO
发明人： KOMATSUBARA MICHIRO , TAKEUCHI FUMIHIKO , YAMADA MASATAKA
IPC分类号： C21D8/12 , C21D9/46 , C22C38/00 , C22C38/06 , H01F1/16
摘要： PURPOSE:To stably obtain a silicon steel sheet good in magnetic properties and film properties by incorporating a specified amt. of oxygen into an annealing atmosphere in weak decarburization for the surface layer of a steel sheet in a cold rolling stage. CONSTITUTION:The stock of a grain oriented silicon steel sheet contg., by weight, 0.03 to 0.10% C, 2.5 to 4.5% Si, 0.02 to 0.10% Mn, 0.01 to 0.05% Al and 0.0040 to 0.0130% N is subjected to hot rolling. If required, it is subjected to hot rolled sheet annealing, is subjected to cold rolling for one time or the one including process annealing and is finished to regulate its sheet thickness into a final one. Successively, it is subjected to decarburization, primary recrystallization annealing and final finish annealing. At this time, in either hot rolled sheet annealing or process annealing, 0.1 to 10% oxygen is incorporated into an atmosphere subjected to surface layer weak decarburization to decarburize C by 0.006 to 0.030% in total. By partially removing C in the surface layer part of the steel sheet, its crystal structure is uniformized, by which high accumulation in the (110)[001] orientation in the texture of primary recrystallized ones can be obtd.

16. 发明专利

JPH0732006A COLD ROLLING METHOD OF DIRECTIONAL SILICON STEEL SHEET AND ROLL COOLING DEVICE OF COLD ROLLING MILL 失效
公开(公告)号：JPH0732006A
公开(公告)日：1995-02-03
申请号：JP18098293
申请日：1993-07-22
申请人： KAWASAKI STEEL CO
发明人： KOMATSUBARA MICHIRO , HAYAKAWA YASUYUKI , TAKEUCHI FUMIHIKO , YAMADA MASATAKA
IPC分类号： B21B3/02 , B21B27/10 , C21D8/12 , C22C38/00
摘要： PURPOSE:To control the magnetic characteristic and the shape of a steel sheet from varying in the longitudinal direction and to improve the magnetic character istic and the shape of the steel sheet by controlling an oil amount more than any on kind among respective coolants of work rolls and back-up rolls, etc., in a cold rolling mill so as to definitely keep the temperature of the steel sheet. CONSTITUTION:Work rolls 6, 6 are decided as the target and a temperature measuring sensor 1 to measure the temperature of a steel sheet 5 come out from a roll bite part is used. A radiation pyrometer or a thermometer of roll contact system can be also used as the temperature measuring sensor 1. A temperature controller 2 to dial the negative return signal so that the signal is made within an instructed definite amount against the measured signal and a flow rate controller 3 to control the oil amount of roll coolants 4 based on the measured signal are installed. Therefore, the magnetic characteristic and the shape of steel sheet in the longitudinal direction of the steel sheet are stably made, and the excellent directional silicon steel sheet can be produced.

17. 发明专利

JPS6448607A METHOD FOR HOT ROLLING 失效
公开(公告)号：JPS6448607A
公开(公告)日：1989-02-23
申请号：JP20609387
申请日：1987-08-19
申请人： KAWASAKI STEEL CO
发明人： YAMADA MASATAKA , UTASHIRO YOJI
IPC分类号： B21B1/22 , B21B31/18
摘要： PURPOSE:To increase the number of rolled stocks in the same rolling cycle and to improve the rolling efficiency by making work roll shift positions of plural stands different from each other in respective stands, shifting the work rolls in the axial direction in cycles, and preventing high spots of a rolled stock. CONSTITUTION:For a hot finishing rolling mill 10 having plural stands #3-#5 whose work rolls are shiftable in the axial direction, roll moving positions of the work rolls 1, 1 of the plural stands #3-#5 are made to be different from each other and the work rolls 1, 1 are periodically moved back and forth at the positions, so that a sheet passage position on the roll in respective stands #3-#5 is automatically changed. Therefore, eccentric wear or local wear of the rolls are hardly generated, so that irregular profiles caused by the above wears are prevented from generation and the number of rolled stocks by the same roll is drastically increased.

18. 发明专利

JPS62199205A ROLLING METHOD WITH WIDTH ADJUSTMENT OF HOT ROLLING MATERIAL 失效
公开(公告)号：JPS62199205A
公开(公告)日：1987-09-02
申请号：JP4342086
申请日：1986-02-28
申请人： KAWASAKI STEEL CO
发明人： TAKECHI TOSHISADA , YAMADA MASATAKA
IPC分类号： B21B1/02 , B21B1/04 , B21B1/22
摘要： PURPOSE:To prevent the generation of flaws even with a thin slab and to permit taking of a large cross rolling reduction by disposing horizontal rolls for cross rolling reduction of ends on the down stream of vertical rolls so as to incline the same in the rolling direction and rolling dogbone parts. CONSTITUTION:A pair of the horizontal rolls 16, 18 for cross rolling reduction of the ends are disposed on the down stream of the vertical rolls 10 for cross rolling reduction of a material 14 to be rolled so as to incline by an angle thetain the rolling direction and are so constituted as to roll the dogbone parts of the material 14 to be rolled. The dogbone parts by rolling are plastically fluidized in the transverse central direction and longitudinal direction of the material to be rolled and are thereby annihilated. Taking of the large cross rolling reduction (stock width-product width) is thus made possible even in the case of the thin slab.

19. 发明专利

JPS62176605A STRUCTURE OF JOINT PART OF DIFFERENT WIDTH STEEL PRODUCTS AND WORKING DEVICE FOR JOINT PART OF DIFFERENT WIDTH STEEL PRODUCTS 失效
公开(公告)号：JPS62176605A
公开(公告)日：1987-08-03
申请号：JP1787986
申请日：1986-01-31
申请人： KAWASAKI STEEL CO
发明人： YAMADA MASATAKA , TAKECHI TOSHISADA
IPC分类号： B21B15/00 , B23K33/00
摘要： PURPOSE:To eliminate the abrupt tension fluctuation in the joint part between a broad steel product and narrow steel product and to permit smooth rolling by working the non-joint surfaces of said joint part to a tapered shape symmetrical to the center line then rolling the joined steel products. CONSTITUTION:The end face of the broad steel product 1 and the end face of the narrow steel product 2 are butted to align the respective center lines to form the joint part 3. The non-joint surfaces 4 are diagonally notched to form the tapered parts 5 symmetrical to the center line. A gas burner, etc., are used to form the tapered parts 5 and an angle theta of inclination is preferably

20. 发明专利

JPS60128210A HEATING METHOD OF GRAIN ORIENTED SILICON STEEL SLAB 失效
公开(公告)号：JPS60128210A
公开(公告)日：1985-07-09
申请号：JP23475183
申请日：1983-12-13
申请人： KAWASAKI STEEL CO
发明人： YAMADA MASATAKA , HISHINUMA ITARU , KUROSAWA MITSUMASA
IPC分类号： C21D8/12 , B21B3/02 , B21B45/00 , C21D1/40 , C21D9/00
摘要： PURPOSE:To obtain the titled steel sheet with less variance in magnetic characterstic by heating electrically a grain oriented silicone steel slab prior to hot rolling in at least the high-temp. region to the prescribed rolling temp. to heat uniformly the slab without generating molten scale and subjecting such slab to hot rolling. CONSTITUTION:A grain oriented silicon steel slab 1 is heated in a heating furnace and in succession thereto, the slab 1 is electrically heated by electrodes 2, 2 to increase the temp. thereof. The temp. region where the slab 1 is heated in the heating furnace is made up to 1,250 deg.C at the max. in ths case and the heating in the succeeding temp. region exceeding said region is accomplished by the conduction of electricity through the electrodes 2, 2. More specifically, the heating to >=1,250 deg.C at which the molten scale consisting essentially of FeO, Fe2O3. SiO2, etc. is liable to be generated is accomplished by conduction of electricity and therefore the deposition of the scale in the heating furnace is prevented. The cost for repairing the furnace is consequently reduced and relatively shorter time is required for heating up on account of the use of electricity. The method is thus advantageous in terms of cost and production efficiency. In the figure, 3, 6 denote cylinders 4 a heat insulating material and 5 a member for holding the heat insulating material, respectively.

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