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1. 发明专利

JPH0751727A MANUFACTURE OF HOT ROLLED STAINLESS STEEL STRIP 失效
公开(公告)号：JPH0751727A
公开(公告)日：1995-02-28
申请号：JP20752993
申请日：1993-08-23
申请人： KAWASAKI STEEL CO , HOTANI KK
发明人： YOSHIOKA MASAHIRO , YAMAMOTO JUNICHI , YOKOZAWA TSUGIO , HOTANI SETSUO
IPC分类号： B21B45/06 , C21D9/52 , C23G1/08
摘要： PURPOSE:To thin scale layer after annealing and reduce scale remainder defects, etc., by performing a surface grinding of a stainless steel strip with a grinding brush roll before annealing and creating a state with scales practically removed or lightly remaining. CONSTITUTION:A stainless steel strip coil 1 after annealing is first put on a heavy grinding brush roll 2; and on one hand, after a scale layer is practically removed, an austenitic stainless steel is put through a continuous annealing furnace 4, mechanical scale breaker(MSB) 5, shot blasting device 6 and acid cleaning equipment 7. On the other hand, a ferritic stainless steel, after treated in a batch annealing furnace, put through the treatment after the mechanical scale breaker 5, After a hot rolling, the surface oxidized layer is removed or made into a state having a light scale with a grinding brush roll 2; and therefore, the scale after the annealing is thin and easily peelable.

2. 发明专利

JPH0751724A METHOD FOR ANNEALING, PICKLING HOT ROLLED STAINLESS STEEL STRIP AND EQUIPMENT THEREFORE 失效
公开(公告)号：JPH0751724A
公开(公告)日：1995-02-28
申请号：JP20752893
申请日：1993-08-23
申请人： KAWASAKI STEEL CO , HOTANI KK
发明人： YOSHIOKA MASAHIRO , YAMAMOTO JUNICHI , YOKOZAWA TSUGIO , HOTANI SETSUO
IPC分类号： B21B45/00 , C23G1/08 , C23G3/02
摘要： PURPOSE:To remove surface faults at real time by winding into a coil after removing faults of the surface of a steel strip by manually or automatically grinding fault generated places with grinding brush rolls. CONSTITUTION:A hot rolled stainless steel strip S is annealed in a continuous annealing furnace 4 (martensite base and ferrite base are not heated), passes though a mechanical scale breaker 5 (MSB), next through a shot blast device 6 and enters in a pickling tank 7. The heat treated strip S after pickling is inspected with a sheet surface inspecting device installed in a surface inspecting room 1, only parts with surface faults are ground with the grinding brush roll 2, and wound in a coil with a tension reel 3. The grinding brush roll 2 consists of heavy grinding brush rolls. Therefore, the surface faults can be removed at real time, further if it is connected to an automatic grinding device, the parts of surface faults are automatically removed with grinding, the achievement ratio of its delivery time is improved and the cost is reduced.

3. 发明专利

JPH0790649A TREATMENT OF PICKLING SOLUTION 失效
公开(公告)号：JPH0790649A
公开(公告)日：1995-04-04
申请号：JP23069493
申请日：1993-09-17
申请人： KAWASAKI STEEL CO , HOTANI KK
发明人： ITO MASAHIKO , YAMAMOTO JUNICHI , MIDORIKAWA SHIGERU , MURAMOTO HARUMASA , KIYONO YOSHIICHI , HOTANI SETSUO
IPC分类号： C02F1/00 , C02F1/52 , C23G1/02 , C23G1/36 , C23G3/02
摘要： PURPOSE:To prevent the deposition of sludge in a pickling treatment tank, etc., by mixing and ejecting the sludge formed at the time of a pickling treatment of a metallic material together with a treating liquid by an ejector and settling and separating the sludge in a solid separating device. CONSTITUTION:The metallic material such as steel products is subjected to the pickling treatment in a pickling tank 1 and after an overflow liquid is supplied by a flow passage 8 into a circulating tank 2, the liquid is replenished with a fresh liquid to adjust an acid concn.; thereafter, the liquid is returned by a pump 6 through a flow passage 9 into the pickling tank 1. The pickling liquid in the pickling tank 1 is sent through the flow passages 12, 13 to the ejector 18 of the pickling tank 1 or the ejector 18 of the circulating tank 2 and is sent in the state of mixing with the sludge generated during the pickling stage to a tank 3 for separating solid from the liquid, by which the sludge is settled and separated. The clean pickling soln. from which the sludge is separated is returned to the circulating tank 2 through a flow passage 11 and is reused. The settled sludge is discharged into a storage tank 4 by opening a valve 7 at an adequate timing. The deposition of the sludge in the pickling tank 1 and the circulating tank 2 is prevented and the stable pickling treatment of the metallic material is executed.

4. 发明专利

JPH0751728A DESCALING METHOD OF HOT ROLLED STAINLESS STEEL STRIP 失效
公开(公告)号：JPH0751728A
公开(公告)日：1995-02-28
申请号：JP20753093
申请日：1993-08-23
申请人： KAWASAKI STEEL CO , HOTANI KK
发明人： YOSHIOKA MASAHIRO , YAMAMOTO JUNICHI , YOKOZAWA TSUGIO , HOTANI SETSUO
IPC分类号： B21B45/06 , C23G1/08
摘要： PURPOSE:To make a surface state smooth by grinding practically to the primary surface layer of a steel strip with a grinding brush roll, after annealing and treating with a mechanical scale breaker, and then immersing in an acid cleaning tank for an acid cleaning. CONSTITUTION:The arrangement of the equipment is in order of a mechanical scale breaker(MSB), heavy grinding brush roll and acid cleaning tank. In descaling, a shot blasting is not used and the acid cleaning is performed after the heavy grinding brush roll is used; therefore, by raising the performance of the grinding brush roll, a descaling is carried out without reducing the passing speed; moreover, the rough surface of the steel generated in a hot rolling is mitigated by the grinding of the base material; and a steel sheet with smooth surface without ruggedness is obtained. Thus, a grinding process is eliminated, and also, if the heavy grinding brush roll is used, one pass grinding is possible instead of a customary three pass grinding.

5. 发明专利

JPH0751729A DESCALING AND PICKLING METHOD FOR HOT ROLLED STAINLESS STEEL SHEET AND ITS LINE 失效
公开(公告)号：JPH0751729A
公开(公告)日：1995-02-28
申请号：JP20753193
申请日：1993-08-23
申请人： KAWASAKI STEEL CO , HOTANI KK
发明人： YOSHIOKA MASAHIRO , YAMAMOTO JUNICHI , YOKOZAWA TSUGIO , ITO MASAHIKO , TSUZUKI SATOSHI , HOTANI SETSUO
IPC分类号： B21B45/06 , B23P17/00 , C25F1/06
摘要： PURPOSE:To prevent the intergranular corrosion due to mixed acids by subjecting a hot rolled stainless steel sheet to a grinding treatment by a mechanical scale breaker, then to a shot blasting treatment, followed by a sulfuric acid pickling treatment and a grinding treatment by grinding brush rolls and finally a nitric acid electrolytic treatment. CONSTITUTION:The mechanical scale breaker, shot blasting device, sulfuric acid tank, grinding brush roll device and nitric acid electrolytic tank are arranged in this order in the line for descaling the hot rolled stainless steel sheet subjected to hot rolling and annealing. The heavy grinding brush roll device is used as the grinding brush roll device of this line. The heavy grinding brush roll referred to here is a grinding brush roll formed by spirally arranging bar- shaped bodies and grinding element members consisting of spring members bonding these bar-shaped bodies, specifying the angle between the surface in the longitudinal direction of the roll shaft and the spiral surface of the grinding element members to >=3 deg. and providing the respective grinding element members with bulging parts for regulating the movement of the grinding element members in adjoining directions.

6. 发明专利

JPH0751725A METHOD FOR CONTINUOUSLY GRINDING STEEL STRIP 失效
公开(公告)号：JPH0751725A
公开(公告)日：1995-02-28
申请号：JP20753293
申请日：1993-08-23
申请人： KAWASAKI STEEL CO , HOTANI KK
发明人： YAMAZAKI SHINJI , MATSUBARA TSUTOMU , MATSUDA AKIRA , YOSHIOKA MASAHIRO , YAMAMOTO JUNICHI , ITO MASAHIKO , TSUZUKI SATOSHI , HOTANI SETSUO
IPC分类号： B21B45/00 , B24B29/00
摘要： PURPOSE:To obtain a necessary amount and surface roughness by using a brush with abrasive grains of small count number in a stand of preceding stage and using a heavy grinding brush made of brush chips having abrasive grains of count number more than the preceding stage in the following stage. CONSTITUTION:Plural brush stands are arranged in series, grinding is executed in a stand of a preceding stage by using a heavy grinding brush 1 in which count number of brush chips is

7. 发明专利

JPH1015725A PRESS PROCESSING METHOD FOR TRIMMING CHIP AND PRESS PROCESSING UNIT FOR TRIMMING CHIP 失效
公开(公告)号：JPH1015725A
公开(公告)日：1998-01-20
申请号：JP16989396
申请日：1996-06-28
申请人： KAWASAKI STEEL CO
发明人： SAISUU MASAHARU , YAMAMOTO JUNICHI
IPC分类号： B23Q11/00 , B23D25/14 , B23D33/00
摘要： PROBLEM TO BE SOLVED: To smoothly carry out the pressed trimming chips of plural kinds of steels by obtaining the sum value of corrected actual volumes of every steel kind, and starting execution of press processing for the trimming chips. SOLUTION: An operating means 7 divides the volume of trimming chips of a steel kind by the corresponding volume efficiency to obtain the corrected trimming chip amount. The above operation is performed for every steel kind to add the corrected trimming chip amounts. If it is judged by the operating means that the corrected trimming chip amount is more than a predetermined value, a control means 9 is started. The control means 9 gives a control signal to a servo valve 13 in such a manner that the servo valve 13 is operated to adjust the inflow and outflow of operating oil and a piston 14 is pushed down to conduct press processing, thereby starting press processing for trimming chips of steel plates of plural steel kinds.

8. 发明专利

JPH09253721A MANUFACTURE OF STAINLESS STEEL STRIP HIGH IN GLOSS 失效
公开(公告)号：JPH09253721A
公开(公告)日：1997-09-30
申请号：JP6658696
申请日：1996-03-22
申请人： KAWASAKI STEEL CO
发明人： SONOBE OSAMU , WATANABE YUICHIRO , KENMOCHI KAZUHITO , SATO SHIGERU , YAMAMOTO JUNICHI
IPC分类号： B21B3/02 , B21B1/22 , B21B37/00 , C21D7/02
摘要： PROBLEM TO BE SOLVED: To manufacture the stainless steel strip housing target gloss by setting a finish pass by a multiple cluster type mill or a roll speed in a final stand by a cold tandem mill or the elongation percentage of a skin pass rolling steel strip accordingly an outlet side plate speed. SOLUTION: In the skin pass rolling of the stainless steel cold rolling strip, the multiple cluster mill or a cold tandem mill is used. By setting the elongation percentage by using a prescribed regression formula found previously accordingly their finish passes or a rolling speed in the final stand. the skin pass rolling is performed. Consequently, the surface gloss of the steel strip can be made equivalent to that in low speed rolling even in high speed rolling or more satisfactory. For the preparation of the regression formula, the stainless steel strip is rolled by changing the finish pass or the rolling speed in the final stand in several stages, and also after performing bright annealing or finish annealing and pickling, the elongation percentage is changed, and the skin pass rolling is performed. Then the surface gloss of each steel strip is measured, and a relationship between the elongation percentage and the gloss is regressed by the prescribed formula.

9. 发明专利

JPH08174019A METHOD AND DEVICE FOR PREVENTING FIRE IN MULTIPLE ROLL MILL 失效
公开(公告)号：JPH08174019A
公开(公告)日：1996-07-09
申请号：JP32661694
申请日：1994-12-28
申请人： KAWASAKI STEEL CO
发明人： TSUZUKI SATOSHI , MATSUMOTO MASAJI , YAMAMOTO JUNICHI
IPC分类号： A62C3/00 , B21B33/00
摘要： PURPOSE: To provide the method and the device for preventing a fire, by which the occurrence frequency of the fire can be made almost zero in a multiple roll mill. CONSTITUTION: Plural spray headers 11 for spraying rolling oil respectively on both side surfaces of upper and lower work rolls and upper and lower surfaces positioned between the intermediate rolls 6 of the work rolls, are arranged, and rolling is performed while spraying neat oil on all the surfaces of upper and lower work rolls. Consequently, the fire during an actual operation can be completely prevented.

10. 发明专利

JPH07116960A PROCESSING METHOD FOR GRINDING OIL MIXTURE CONTAINING SLUDGE, ITS PROCESSING FACILITY AND SLUDGE BRIQUETTE 失效
公开(公告)号：JPH07116960A
公开(公告)日：1995-05-09
申请号：JP26745693
申请日：1993-10-26
申请人： KAWASAKI STEEL CO
发明人： YAMAMOTO JUNICHI , YOKOZAWA TSUGIO
IPC分类号： B24B55/03 , B01D24/46 , B01D33/44 , B01D33/58 , B01D36/02
摘要： PURPOSE:To collect sludge as a briquette being easy in handling by filtering a grinding oil mixture containing sludge to obtain a sludge mixture containing a small quantity of the grinding oil, and compressing the sludge mixture to collect the sludge substantially containing no grinding oil as a briquette. CONSTITUTION:A sludge mixture is filtered through a horizontal belt type filter 11 and a centrifugal separation type filter 12 and a pure grinding oil is therefore collected. Next the sludge mixture is carried to a pressing machine 17 by a conveyor 16 and compressed for further collecting the grinding oil, and collected as a briquette 19 substantially containing no grinding oil. The briquette 19 formed of the sludge solidified by compression does not substantially contain the grinding oil, and is reused in an electric furnace for producing stainless steel.

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