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21. 发明专利

JPH04262803A QUENCHED AND TEMPERED ROLLING EQUIPMENT 失效
公开(公告)号：JPH04262803A
公开(公告)日：1992-09-18
申请号：JP2433391
申请日：1991-02-19
申请人： KAWASAKI STEEL CO
发明人： KOBAYASHI MAKOTO , KANETANI TETSUO , AKIZUKI TOSHIO
IPC分类号： B21B1/22 , B21B13/14
摘要： PURPOSE:To control the size of cross buckle (bellows) in the quenched and tempered rolling of a steel strip. CONSTITUTION:Because a variable crown roll 5 of which the roll crown is adjustable is provided as an auxiliary roll in the just rear of work rolls 3, an outward force (widening force) in the width direction of the steel strip 1 is added and an inward force (narrowing force) in the width direction at roll bite can be mutually canceled by making the roll crown concave in the case of large cross buckle.

22. 发明专利

JPH04238616A METHOD FOR CONTROLLING REDUCING FORCE ON TEMPER ROLLING OF STEEL STRIP 失效
公开(公告)号：JPH04238616A
公开(公告)日：1992-08-26
申请号：JP32991
申请日：1991-01-08
申请人： KAWASAKI STEEL CO
发明人： KOBAYASHI MAKOTO , KOKADO FUMIO
IPC分类号： B21B37/00 , B21B1/22 , B21B37/58
摘要： PURPOSE:To make the roughness of plate surface uniform over the total length of a steel strip by obtaining the proper draft of the final stand so as to make the roughness of plate surface constant corresponding to the rolling speed preliminarily, and rolling down the final stand with this proper rolling force in the temper rolling of the steel strip. CONSTITUTION:At the time of temper rolling the steel strip 1 is with work rolls 2a, 2a' of two stand tandem temper rolling mills 2, the rolling speed signal detected by a rolling speed detector 3 connected to the work roll 2a' of the 2nd stand is transformed by a signal transforming unit 4. The proper rolling force is calculated by a storing and arithmetric unit 5 from the speed signal, the condition of rolled stock and the rolling force signal sent through a rolling force signal transforming unit 9 from a rolling force detector 8 attached to the rolling roll, added with the signal inputted by a plate surface roughness target value setting and inputting means 10. This calculated value is amplified with an amplifier 6 and outputted to a rolling force control mechanism 7, and the rolling is executed with the prescribed rolling force. The steel strip of uniform roughness and the size of cross-buckle can thus be obtained.

23. 发明专利

JPS62136532A CONTINUOUS ANNEALING METHOD FOR STAINLESS STEEL STRIP 失效
公开(公告)号：JPS62136532A
公开(公告)日：1987-06-19
申请号：JP27658585
申请日：1985-12-09
申请人： KAWASAKI STEEL CO
发明人： KOBAYASHI MAKOTO , YAGISHIMA AKIYA , SHIMOYAMA YUJI , KAWASAKI TATSUO , OCHIAI MASANOBU
IPC分类号： C21D9/56
摘要： PURPOSE:To produce a stainless steel strip having good surface characteristics with good productivity by subjecting the cold rolled stainless steel strip to a specific amt. of Ni plating then annealing the steel strip while maintaining an in-furnace pressure at the pressure higher than the atmospheric pressure according to contents of Si, Mn and Cr in the steel strip. CONSTITUTION:Ni plating is formed to >=0.01g/m to on the surface of the steel strip after cold rolling to prevent the temper color thereof. The steel strip is then annealed in a continuous annealing furnace of a reducing atmosphere while the in-furnace pressure higher than the atmospheric pressure is maintained according to the contents of Si, Mn and Cr in the steel strip. More specifically, the respective lower limit in-furnace pressures are calculated by using formulas I, II, III to maintain the concn. of gaseous O2 at the permissible concn. for coloring. In formulas, Si, Mn, Cr; the respective contents (weight %) in the steel, PSi, PMn, PCr; the lower limit in-furnace pressures (mmH2O) for the respective elements under which the temper color is not generated, k; the coefft. determined by the in-furnace structure. The stainless steel strip having the excellent temper color and oxidation resistance is thus produced with high performance.

24. 发明专利

JPS6213556A STAINLESS ALLOY STEEL UNDERGOING HARDLY SURFACE CRACKING DURING HOT ROLLING AND METHOD FOR HEATING ITS SLAB 失效
公开(公告)号：JPS6213556A
公开(公告)日：1987-01-22
申请号：JP15255585
申请日：1985-07-12
申请人： KAWASAKI STEEL CO
发明人： KAKIHARA SETSUO , KOBAYASHI MAKOTO , KAKIUCHI HIROYUKI , YAGISHIMA AKIYA , YOSHIOKA KEIICHI
IPC分类号： B21B3/00 , C21D1/52 , C21D9/00 , C22C38/00 , C22C38/42 , C22C38/58
摘要： PURPOSE:To reduce surface defects caused on a stainless alloy steel slab by cracking during hot rolling by specifying the amount of sol. Al added to the stainless alloy steel having a specified composition and by regulating the concn. of O2 in the atmosphere in a furnace when the slab is heated. CONSTITUTION:A stainless alloy steel is provided with a composition contg., by weight, 0.001-0.20% C, 0.10-5.0% Si, 0.1-11.0% Mn,

25. 发明专利

JPS6213527A METHOD FOR HEATING STAINLESS ALLOY STEEL SLAB 失效
公开(公告)号：JPS6213527A
公开(公告)日：1987-01-22
申请号：JP15255685
申请日：1985-07-12
申请人： KAWASAKI STEEL CO
发明人： KAKIHARA SETSUO , KOBAYASHI MAKOTO , KAKIUCHI HIROYUKI , YAGISHIMA AKIYA , HISHINUMA ITARU , YOSHIOKA KEIICHI
IPC分类号： B21B3/02 , C21D8/02 , C21D9/00 , C21D9/46 , C22C38/00 , C22C38/54
摘要： PURPOSE:To prevent the occurrence of spills on a stainless alloy steel slab due to microcracking during hot rolling by heating the slab having a specified composition under specified conditions before hot rolling. CONSTITUTION:The composition of a stainless alloy steel slab is composed of, by weight, 0.001-0.2% C, 0.1-5% Si, 0.1-11% Mn,

26. 发明专利

JPS57190792A PRODUCTION OF STAINLESS STEEL CLAD STEEL 失效
公开(公告)号：JPS57190792A
公开(公告)日：1982-11-24
申请号：JP7452581
申请日：1981-05-18
申请人： KAWASAKI STEEL CO
发明人： OOTANI HISAFUMI , MIHARA YASUO , OKA YUTAKA , KOBAYASHI MAKOTO , EMI TOSHIHIKO , SAITOU YOSHIHIRO
IPC分类号： B22D19/16 , B23K20/04 , B32B15/01 , B32B15/18
摘要： PURPOSE:To produce stainless steel clad steel in good product yield in the stage of producing the clad material of mild steel and stainless steel by a rolling method by roughening the surface of the mild steel and rolling these at high temp. and specific draft. CONSTITUTION:In the stage of producing a clad material using mild steel as a base material and austenitic stainless steel as a cladding metal by a rolling method, the roughness of the fayed surface of the mild steel base material is controlled to

27. 发明专利

JP2002121652A Cr-CONTAINING STEEL FOR AUTOMOBILE SUSPENSION 失效
公开(公告)号：JP2002121652A
公开(公告)日：2002-04-26
申请号：JP2000311398
申请日：2000-10-12
申请人： KAWASAKI STEEL CO
发明人： MIYAZAKI ATSUSHI , HIRASAWA JUNICHIRO , SATO SUSUMU , HASUNO SADAO , KOBAYASHI MAKOTO , TOYOOKA TAKAAKI , KITAZAWA MAKOTO
IPC分类号： C22C38/00 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/54 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide Cr-containing steel satisfying all of the toughness of HAZ, strength (hardness) and corrosion resistance and suitable for suspensions for concerned an automobile. SOLUTION: The steel has a composition containing, by weight,

28. 发明专利

JP2000197902A TEMPER ROLLING METHOD OF STEEL SHEET 失效
公开(公告)号：JP2000197902A
公开(公告)日：2000-07-18
申请号：JP37029898
申请日：1998-12-25
申请人： KAWASAKI STEEL CO
发明人： SAITO TERUHIRO , MIYAKE HIDENORI , KAWAGUCHI GORO , KOBAYASHI MAKOTO , SATO NAOYA
IPC分类号： B21B39/00 , B21B1/22 , B21B27/00 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To improve the glossiness of a steel sheet by rolling a steel sheet containing C of not more than a specified rate with a rolling mill having plural stands in which at least the rolling rolls in the front stage are scratch bright rolls having a specified roughness and the rolling rolls in the rearmost stage are bright rolls having a specified roughness. SOLUTION: A steel sheet whose C content is :

29. 发明专利

JPH10324925A METHOD FOR PREDICTING ABNORMALITY IN METALLIC STRIP HEAT TREATMENT FURNACE 失效
公开(公告)号：JPH10324925A
公开(公告)日：1998-12-08
申请号：JP15053297
申请日：1997-06-09
申请人： KAWASAKI STEEL CO
发明人： KAWAGUCHI GORO , KOBAYASHI MAKOTO , SAITO TERUHIRO , HAMAGAMI KAZUHISA , OGAWA MITSURU
IPC分类号： C21D11/00 , C21D9/56
摘要： PROBLEM TO BE SOLVED: To provide a predicting method of heat buckle which predicts the development of the heat buckle and meandering in a strip and can improve the responsiveness to the prediction of abnormality thereof. SOLUTION: Temp. difference between the center part and the edge parts in the width direction of a prescribed temp. measured roll is actually measured. Further, a temp. difference limited value between the center part and the edge parts in the width direction of the roll easily developing the heat buckle and the meandering in the strip 6, is calculated based on prescribed factors (friction coefficient between the temp. measured roll and the strip, the initial crown of the roll, the length and diameter of the flat part of the roll, the thickness, width, Young's modules and yield stress of the strip, etc.). Then, from the result by comparing and judging the actual measured temp. difference and the temp. difference limited value, when the temp. difference limited value exceeds the actual measured temp. difference, a warning developing the heat buckle or the meandering is displayed with a displayed device 13.

30. 发明专利

JPH1017999A HOT ROLLED FERRITIC STAINLESS STEEL PLATE EXCELLENT IN CORROSION RESISTANCE, FORMABILITY, AND UNIFORMITY OF MATERIAL, AND ITS PRODUCTION 失效
公开(公告)号：JPH1017999A
公开(公告)日：1998-01-20
申请号：JP16702996
申请日：1996-06-27
申请人： KAWASAKI STEEL CO
发明人： KONO MASAAKI , SATO SUSUMU , KOBAYASHI MAKOTO , IKEDA TOUSHIROU
IPC分类号： B21B3/02 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/50 , C22C38/54
摘要： PROBLEM TO BE SOLVED: To stably improve corrosion resistance, formability, and uniformity of material by adding Ti or Nb to a ferritic stainless steel and also regulating the grain size of carbides according to the position in plate thickness at the time of hot rolling into plate. SOLUTION: As a stabilizer for impurities C and N, either or both of Ti and Nb are further added to a ferritic stainless steel having a composition containing, by weight, 1.5 and (Ti+Nb) =0.02μm in the surface layer part and >=0.05μm in the central part of the steel plate, respectively.

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