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1. 发明专利

JPH0812147A CENTERING DEVICE FOR STEEL BELT AND ITS METHOD 失效
公开(公告)号：JPH0812147A
公开(公告)日：1996-01-16
申请号：JP14795294
申请日：1994-06-29
申请人： SUMITOMO METAL IND , HITACHI LTD
发明人： KOJIMA TOSHIO , YAMAZAKI TAKESHI , HOSAKA MASAYUKI , KAWAMATA MASANORI
IPC分类号： B65H23/038
摘要： PURPOSE:To laterally move a thin steel belt without bending it by providing a center dislocation measuring mechanism to measure a center dislocation quantity of the steel belt to the line center and a clamp mechanism to sandwich an upper surface and an under surface of the steel belt, and moving the clamp mechanism in the direction for reducing the dislocation quantity. CONSTITUTION:When the rear end of a preceding steel belt W1 approaches a centering device 20 when the tip of a succeeding steel belt W2 is joined to the rear end of the preceding steel belt W1 by a steel belt welder, speed of a line is reduced, and a lower roller 34 of a clamp mechanism 31 is raised, and the steel belt W1 is clamped between upper and lower rollers 33 and 34. Next, a center dislocation quantity of the rear end center of the preceding steel belt W1 is measured, and a laterally pulling cylinder is controlled in driving according to the value, and a slide frame 45 is laterally moved in the direction for reducing center dislocation. Next, whether or not the rear end of the preceding steel belt W1 slips out of the centering mechanism 20 is investigated, and in the case of NO, centering is again performed, and when it slips out, the lower roller 34 is lowered, and the centering is finished.

2. 发明专利

JPH0649700A CONTINUOUS PICKLING DEVICE FOR BAND STEEL 失效
公开(公告)号：JPH0649700A
公开(公告)日：1994-02-22
申请号：JP20524292
申请日：1992-07-31
申请人： SUMITOMO METAL IND , HITACHI LTD
发明人： KOJIMA TOSHIO , KANAI KENJI , ABO AKIRA , NAKAMURA TSUNEO
IPC分类号： C25F1/06 , C25F7/00 , C25F7/02
摘要： PURPOSE:To suppress the formation of slurry in a tank and to efficiently remove substances in an electrolytic soln. by providing plural drainage holes on the bottom of a pickling tank and collecting substances and particles precipitated in the soln. to the bottom of the tank. CONSTITUTION:Among the oxidized scales and particles dropped or removed from the band steel 1 electrolyzed and pickled in the pickling tank 2, the lighter particles float in the liquid but the heavier particles are precipitated to the bottom of the tank 2. Precipitated substances and particles flow on inclined surfaces and are accumulated at the central drainage holes. When valves V1 to V5 are opened, the precipitates are guided by the liquid in the vicinity of the drainage holes and discharged from the pickling tank 2. The discharged liquids are collected by a piping and sent to a clarifier 13, the substances and particles therein are precipitated and removed and the treated liquid is sent to a circulation tank 9 as a washing liquid. Substances and particles recovered at the clarifier 13 are discharged to a pit 15 as slurries.

3. 发明专利

JPH0665798A METHOD FOR DESCALING STAINLESS STEEL AND DEVICE THEREFOR 失效
公开(公告)号：JPH0665798A
公开(公告)日：1994-03-08
申请号：JP22012392
申请日：1992-08-19
申请人： SUMITOMO METAL IND , HITACHI LTD
发明人： KOJIMA TOSHIO , HIUGAJI YUKIO , NAKAMURA TSUNEO
IPC分类号： C23G1/08 , C25F1/06
摘要： PURPOSE:To efficiently descale many kinds of stainless steels having different descaling characteristics by omitting aq. nitric acid electrolysis and treatment with a nitric acid-hydrofluoric acid mixture at need. CONSTITUTION:A stainless steel strip 1 scaled by annealing is electrolyzed in an aq. neutral salt electrolytic cell 2 to dissolve Cr oxides and then electrolyzed in an aq. nitric acid electrolytic cell 7 to dissolve Fe oxides. The strip is then introduced into a nitric acid-hydrofluoric acid mixture tank 17 to remove a Cr-deficient layer and discharged through a washing tank 19 and a drier 21. In this process, aq. nitric acid in the electrolytic cell 7 is transferred to a tank 9 in accordance with the kind of steel by a switching means 30, and the aq. neutral salt soln. in a tank 10 is supplied to the cell 7. The nitric acid- hydrofluoric acid mixture in the tank 17 is replaced with water or use of the tank 17 is omitted. Consequently, the strip is efficiently descaled, and a high- quality stainless steel strip 11 having a good surface state is obtained.

4. 发明专利

JPH0931543A AUSTENITIC STAINLESS STEEL SHEET AND ITS PRODUCTION 失效
公开(公告)号：JPH0931543A
公开(公告)日：1997-02-04
申请号：JP18259695
申请日：1995-07-19
申请人： SUMITOMO METAL IND
发明人： KITANI SHIGERU , HAYASHI YOSHIO , KOJIMA TOSHIO
IPC分类号： C21D6/00 , C21D9/46 , C21D9/52 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To produce an austenitic stainless steel sheet in which the number of processes required for mirror polishing is reduced, particularly, the time required for buffing is reduced and surface gloss of the product can be increased and to provide a method for producing the same. SOLUTION: (1) This austenitic stainless steel sheet is the one before pickling after annealing, and in which, by at% as for metallic elements excluding oxygen, the peak value of the concn. of Si in scales formed in the process of annealing satisfies =30 deg.C/s and the heating time at >=1000 deg.C is regulated to 5 to 90sec to produce the above austenitic stainless steel sheet.

5. 发明专利

JPH093792A NEUTRAL COMBINED PAPER FOR STAINLESS STEEL STRIP 失效
公开(公告)号：JPH093792A
公开(公告)日：1997-01-07
申请号：JP14891395
申请日：1995-06-15
申请人： NEW OJI PAPER CO LTD , SUMITOMO METAL IND
发明人： ISHII HIROKAZU , YOSHIDA YOSHIO , FUJIWARA SEIJI , ISHIZUKA KAORI , KOJIMA TOSHIO , OI HIROYUKI , IZUKURA NAOKI
IPC分类号： B21B3/02 , B01F17/00 , D21H11/04 , D21H17/00 , D21H17/03 , D21H17/37 , D21H19/32 , D21H27/00
摘要： PURPOSE: To provide a neutral combined paper for stainless steel strips capable of giving good stretching characteristics to the stainless steel strip in the rolling treatment by coiling the stainless steel strip together with the combined paper before rolling when the ferrite-based stainless steel is brought to a cold rolling without using a lubricant. CONSTITUTION: This neutral combined paper for stainless steel strips is obtained by including a lubricant containing at least one compound selected from calcium stearate, a polyamino acid resin, an emulsion-type silicone, a polyethylene emulsion, a wax emulsion and an alkylketene dimer in kraft paper papermade from kraft pulp as a resource. The dynamic coefficient of friction by JIS P 8147 of both front and back surfaces of the obtained combined paper is adjusted to 0.20-0.40.

6. 发明专利

JPH07238326A VERTICAL CONTINUOUS ANNEALING FURNACE FOR STEEL STRIP 失效
公开(公告)号：JPH07238326A
公开(公告)日：1995-09-12
申请号：JP2982694
申请日：1994-02-28
申请人： SUMITOMO METAL IND
发明人： MATSUSHITA SATORU , MATSUDAIRA YUKIHIKO , OKAMURA KAZUO , KOJIMA TOSHIO
IPC分类号： C21D11/00 , C21D9/56 , C21D9/66
摘要： PURPOSE:To prevent one side extension in an edge parts of a steel strip with a comparatively simple constitution by controlling a heating means based on the temp. signal of a temp. distribution detecting means in the width direction of the steel strip at the front and the rear parts of the heating means for enabling the control of the temp. distribution in the width direction of the steel strip. CONSTITUTION:The heating means 10 for enabling the control of the temp. distribution in the width direction of the steel strip W is added in a cooling zone 5 and controlled with a control means 11. The first and the second steel strip temp. distribution measuring means 21, 22 are arranged at the front part and the rear part of the heating means 10, respectively, and the heating means 10 is controlled based on the temp. signals measured with these positions. The steel strip W is charged upward to a preheating zone 2 and turned over at a top roll 15 and charged downward to a heating zone 3 and heated and uniformized to the temp. distribution in a soaking zone 4, and after naturally cooling in an air-cooling zone 5, the steel strip is made in the horizontal state with a bend floated device 6 and sufficiently cooled in a cooling zone 7. By this method, the temp. distribution in the width direction of the steel strip can be uniformized. A heating device 13 having the same function as the means 10 may be arranged in the bend floated device 6.

7. 发明专利

JPH09268326A SEALING DEVICE FOR STRIP FURNACE 失效
公开(公告)号：JPH09268326A
公开(公告)日：1997-10-14
申请号：JP8239796
申请日：1996-04-04
申请人： CHUGAI RO KOGYO KAISHA LTD , SUMITOMO METAL IND
发明人： NAGATA MASATO , KOJIMA TOSHIO , NISHIYAMA TAKAAKI , UCHIYAMA EIICHIRO
IPC分类号： C21D1/74 , C21D9/56 , F27D7/06
摘要： PROBLEM TO BE SOLVED: To provide a sealing device for strip furnace small in the intrusion of the outer air into the furnace and the leakage of atmosphere in the furnace and capable of holding the sealing property for long time. SOLUTION: In this sealing device for the strip furnace in which one pair of seal rolls 7, 7 are disposed oppositely at an opening hole 3 for passing the strip of the furnace body 2, seal blocks 10 advancable/retreatable to a pass line L and thinning toward any direction of advancing/retreating direction are disposed between the seal rolls and the furnace body. Then, felts 13 are fitted on the sliding surface of the seal block with the furnace body and the press- contact surface with the seal roll through elastic bodies 12 and on the other hand, an N2 gas sealing chamber 21 adjoined with the seal blocks, is disposed in the furnace body and the pressure in the N2 gas sealing chamber is kept to lower than the pressure in the furnace and higher than the pressure of the outer part of the furnace.

8. 发明专利

JPH08291398A FUSED SALT BATH COMPOSITION FOR CONTINUOUS ANNEALING AND PICKLING 失效
公开(公告)号：JPH08291398A
公开(公告)日：1996-11-05
申请号：JP9391395
申请日：1995-04-19
申请人： SUMITOMO METAL IND
发明人： KOJIMA TOSHIO , KITANI SHIGERU
IPC分类号： C23G1/32
摘要： PURPOSE: To provide a fused salt bath for continuous annealing and pickling which is capable of further decreasing a carry-over amt. and is applicable to a material which does not contain Cr or is low in Cr content. CONSTITUTION: This compsn. consists, by weight %, of 10 to 20% in total at least one kind of Nail and KCl, 0.5 to 1.5% in total at least one kind of Na2 SO4 and K2 SO4 , 0 to 40% in total at least one kind of NaNO3 and KNO3 and the balance NaOH with impurities.

9. 发明专利

JPH08224609A WIPER DEVICE FOR MILL ROLL 失效
公开(公告)号：JPH08224609A
公开(公告)日：1996-09-03
申请号：JP13140694
申请日：1994-05-20
申请人： SUMITOMO METAL IND , SUMITOMO HEAVY INDUSTRIES
发明人： KOJIMA TOSHIO , HIUGAJI YUKIO , SAIGA MASAYUKI , ABE KEIZO
IPC分类号： B24B5/37 , B21B28/04 , B24B21/00 , B24B21/12
摘要： PURPOSE: To improve the column of the surface of a strip by moving a wiping unit from a retraction position to an operation preparation position just before a pushing roll comes into contact with a mill roll by an opening and closing actuator with a large output, and making the pushing roll come into contact with the surface of the mill roll by a pushing actuator with a small output. CONSTITUTION: An opening/closing cylinder 10 is oscillated between a retraction position III and an operation preparation position II. Since the operation preparation position II is positioned just before a pushing roll 5 comes into contact with a mill roll R, a damage, etc., on the surface of the mill roll R, which are caused by the collision of a wiping unit A with the mill roll R, do not occur. After that, when operating a pushing cylinder 30, a pin 14 on a pushing frame 1 side is slid in the inside of the slot 21 of a clevis 20, and the wiping unit A is slightly decanted to be moved to an operation position I. As a result, a wiping sheet 8 is allowed to come into contact with the surface of the mill roll R by the pushing roll 5. However, since the output of this pushing cylinder 30 is small and it comes into soft contact with the mill roll R, a flaw does not occur.

10. 发明专利

JPH07279027A NONWOVEN FABRIC FOR PROTECTING SURFACE OF METALLIC THIN SHEET 失效
公开(公告)号：JPH07279027A
公开(公告)日：1995-10-24
申请号：JP6984394
申请日：1994-04-08
申请人： UNITIKA LTD , SUMITOMO METAL IND
发明人： YAMAMOTO ISAMU , SAKATA SEIZO , KOJIMA TOSHIO , OI HIROYUKI
IPC分类号： B65H39/16 , B21C47/26 , B29C59/00 , D04H3/011 , D04H3/00
摘要： PURPOSE:To obtain the subject nonwoven fabric, having a sufficient strength without causing any thermal embrittlement, fuzz and damage to a metallic thin sheet when rolled between the layers of a metallic thin sheet by carrying out the partial thermal contact bonding treatment of a nonwoven fabric constituted of polyester continuous filaments into an embossed form. CONSTITUTION:This nonwoven fabric is obtained by carrying out the partial thermal contact bonding treatment of a nonwoven fabric constituted of polyester continuous filaments having a thickness of >=1 denier single filament size sufficient for strength and scattering a thermal contact bonded parts 1 in dots. The area ratio of the thermal contact bonded parts to the whole area of the nonwoven fabric is preferably within the range of 10-40% and the distribution density of the thermal contact bonded parts is preferably within the range of >=20dots/cm . The area of the respective thermal contact bonded parts is preferably within the range of >=0.1mm and the recessed depth of the thermal contact bonded parts is preferably within the range of >=25mum.

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