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公开(公告)号：JPH0931543A
公开(公告)日：1997-02-04
申请号：JP18259695
申请日：1995-07-19
Applicant: SUMITOMO METAL IND
Inventor： KITANI SHIGERU , HAYASHI YOSHIO , KOJIMA TOSHIO
Abstract: 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.
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公开(公告)号：JPH093792A
公开(公告)日：1997-01-07
申请号：JP14891395
申请日：1995-06-15
Applicant: NEW OJI PAPER CO LTD , SUMITOMO METAL IND
Inventor： ISHII HIROKAZU , YOSHIDA YOSHIO , FUJIWARA SEIJI , ISHIZUKA KAORI , KOJIMA TOSHIO , OI HIROYUKI , IZUKURA NAOKI
Abstract: 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.
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公开(公告)号：JPH0812147A
公开(公告)日：1996-01-16
申请号：JP14795294
申请日：1994-06-29
Applicant: SUMITOMO METAL IND , HITACHI LTD
Inventor： KOJIMA TOSHIO , YAMAZAKI TAKESHI , HOSAKA MASAYUKI , KAWAMATA MASANORI
IPC: B65H23/038
Abstract: 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.
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公开(公告)号：JPH07238326A
公开(公告)日：1995-09-12
申请号：JP2982694
申请日：1994-02-28
Applicant: SUMITOMO METAL IND
Inventor： MATSUSHITA SATORU , MATSUDAIRA YUKIHIKO , OKAMURA KAZUO , KOJIMA TOSHIO
Abstract: 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.
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公开(公告)号：JPH09268326A
公开(公告)日：1997-10-14
申请号：JP8239796
申请日：1996-04-04
Applicant: CHUGAI RO KOGYO KAISHA LTD , SUMITOMO METAL IND
Inventor： NAGATA MASATO , KOJIMA TOSHIO , NISHIYAMA TAKAAKI , UCHIYAMA EIICHIRO
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：JPH08291398A
公开(公告)日：1996-11-05
申请号：JP9391395
申请日：1995-04-19
Applicant: SUMITOMO METAL IND
Inventor： KOJIMA TOSHIO , KITANI SHIGERU
IPC: C23G1/32
Abstract: 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.
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公开(公告)号：JPH08224609A
公开(公告)日：1996-09-03
申请号：JP13140694
申请日：1994-05-20
Applicant: SUMITOMO METAL IND , SUMITOMO HEAVY INDUSTRIES
Inventor： KOJIMA TOSHIO , HIUGAJI YUKIO , SAIGA MASAYUKI , ABE KEIZO
Abstract: 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.
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公开(公告)号：JPH07279027A
公开(公告)日：1995-10-24
申请号：JP6984394
申请日：1994-04-08
Applicant: UNITIKA LTD , SUMITOMO METAL IND
Inventor： YAMAMOTO ISAMU , SAKATA SEIZO , KOJIMA TOSHIO , OI HIROYUKI
Abstract: 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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公开(公告)号：JPH07216600A
公开(公告)日：1995-08-15
申请号：JP913494
申请日：1994-01-31
Applicant: DAISO CO LTD , SUMITOMO METAL IND
Inventor： MURANAGA TOSHIO , ASADA SHIGEO , KOJIMA TOSHIO , KANAI KENJI
Abstract: PURPOSE:To remarkably improve the service life of an anode by forming a plural-layer coating film of iridium oxide, tantalum oxide and manganese dioxide on a titanium substrate as the anode to be used in pickling, using an electrode provided with catalytic activity and insolubility and controlling the anode current density and pickling soln. composition. CONSTITUTION:A coating film consisting of a mixture of 50-80mol% iridium oxide and 15-50mol% tantalum oxide and with the weight controlled to >=20g/m , expressed in terms of metallic iridium, is formed on a substrate of titanium or titanium alloy. A surface layer consisting of >=20g/m electrodeposited manganese dioxide is provided on the coating film as an intermediate layer to constitute an electrode. When pickling is conducted, the anode current density is controlled to , and an electrolytic pickling soln. contg. manganese ion is used. Since this constitution consists of the substrate, the intermediate layer excellent in adhesion and the dense surface layer, the substrate is not passivated, and the service life is prolonged because the intermediate and surface layers have electrode catalytic activity.
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公开(公告)号：JPH06212285A
公开(公告)日：1994-08-02
申请号：JP666293
申请日：1993-01-19
Applicant: MITSUBISHI HEAVY IND LTD , SUMITOMO METAL IND , RIYOOSEN ENGINEERS KK
Inventor： TAUCHI KUNIAKI , KAMEDA KOJI , KASAI MASAHIRO , KOJIMA TOSHIO , HIUGAJI YUKIO , TAKAHASHI NOBUAKI , YOSHIDA SHIGEKI
Abstract: PURPOSE:To simply execute temp. rising constantly under the most optimum condition by respectively controlling a fuel flow quantity, which is supplied to a heating burner arranged at each plural heating zone, in response to passing condition through a fuel control valve. CONSTITUTION:After a steel sheet 101 is passed through a preheating zone 2, heating zone 6, soaking zone 19 and cooling zone 22 in sequence and is annealed, the oxidized film generated in these processes is removed by a pickling device 26. In the annealing apparatus, plural heating zones 111-116 are placed along a pass line of the steel sheet 101 in the heating zone 6, arranging each heating burner 11 thereto. These heating burners 11 are arranged with each fuel control valve 12, controlling the fuel flow quantity for each heating zone. At this time, the fuel control valve 12 is controlled by a control device 16 so that the fuel flow quantity becomes the preset quantity in response to the passing condition of the steel sheet 101.
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