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1. 发明专利

DE69613343D1 未知
公开(公告)号：DE69613343D1
公开(公告)日：2001-07-19
申请号：DE69613343
申请日：1996-03-28
申请人： KAWASAKI STEEL CO
发明人： OZAKI YOSHIHIRO , FUJITA AKIO , MURAKI MINEO
IPC分类号： C21D8/12

2. 发明专利

DE69613343T2 未知
公开(公告)号：DE69613343T2
公开(公告)日：2001-09-20
申请号：DE69613343
申请日：1996-03-28
申请人： KAWASAKI STEEL CO
发明人： OZAKI YOSHIHIRO , FUJITA AKIO , MURAKI MINEO
IPC分类号： C21D8/12

3. 发明专利

CA2216659A1 SEMIPROCESSED NONORIENTED MAGNETIC STEEL SHEET HAVING EXCELLENT MAGNETIC CHARACTERISTICS AND METHOD FOR MAKING THE SAME 未知
公开(公告)号：CA2216659A1
公开(公告)日：1997-08-21
申请号：CA2216659
申请日：1997-02-06
申请人： KAWASAKI STEEL CO
发明人： FUJITA AKIO , KAWANO MASAKI , TAKASHIMA MINORU , SATO KEIJI
IPC分类号： C21D8/12 , C22C38/00 , C22C38/06 , H01F1/147 , H01F1/16 , H01F41/02
摘要： A semi-processed non-oriented magnetic steel sheet which is mainly used for the iron core of a rotary machine or transformer. After annealed and rolled for a reduction of 2-18 % in thickness in the manufacture, the steel sheet can be worked and then subjected to a stress relief anneal on the user side so that the grain size may be increased to provide desired magnetic characteristics. When a relation eces1.18ec is met by increasing the lubrication at the time of secondary cold rolling, excellent magnetic characteristics can be obtained where es is the strain in the surface layer and ec is the strain in the middle layer.

4. 发明专利

CA2216659C SEMIPROCESSED NONORIENTED MAGNETIC STEEL SHEET HAVING EXCELLENT MAGNETIC CHARACTERISTICS AND METHOD FOR MAKING THE SAME 未知
公开(公告)号：CA2216659C
公开(公告)日：2003-10-21
申请号：CA2216659
申请日：1997-02-06
申请人： KAWASAKI STEEL CO
发明人： TAKASHIMA MINORU , KAWANO MASAKI , SATO KEIJI , FUJITA AKIO
IPC分类号： C21D8/12 , C22C38/00 , C22C38/06 , H01F1/147 , H01F1/16 , H01F41/02
摘要： The present invention relates to a semiprocessed nonoriented magnetic steel sheet which is used in iron cores of motors and transformers, finished to a final product by rolling having a reduction rate of 2 to 18% after final annealing by a manufacturer, and assures desired magnetic characteristics due to coarsening of crystal grains during strain-relief annealing after processing by a user. The excellent magnetic characteristics can be achieved by increasing lubrication during second cold rolling so as to satisfy the equation: e c .ltoreq. e s .ltoreq. 1.18e c wherein e s represents a strain value at the surface layer of the steel sheet and e c represents a strain value at the central layer.

5. 发明专利

JP2001279398A NONORIENTED SILICON STEEL SHEET EXCELLENT IN HIGH FREQUENCY MAGNETIC PROPERTY 失效
公开(公告)号：JP2001279398A
公开(公告)日：2001-10-10
申请号：JP2000090456
申请日：2000-03-29
申请人： KAWASAKI STEEL CO
发明人： KONDO OSAMU , FUJITA AKIO , KONO MASAAKI , KONO MASAKI , HONDA ATSUTO
IPC分类号： C22C38/00 , C22C38/34 , H01F1/147 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To provide a nonoriented silicon steel sheet having excellent magnetic properties in a frequency region of >=1 kHz, and further >=10 kHz, and advantageously suited to a high frequency reactor. SOLUTION: In the nonoriented silicon steel sheet which has a composition containing 1.5-20 mass% Cr and 2.5-10 mass % Si, also containing C and N in amounts reduced, in total, to =3.

6. 发明专利

JP2001223105A ELECTROMAGNETIC STEEL SHEET WITH INSULATING COATING FILM HAVING EXCELLENT CHARACTERISTIC 失效
公开(公告)号：JP2001223105A
公开(公告)日：2001-08-17
申请号：JP2000029233
申请日：2000-02-07
申请人： KAWASAKI STEEL CO
发明人： KOMORI YUKA , HONDA ATSUTO , KONO MASAKI , SASHI KAZUMICHI , FUJITA AKIO
IPC分类号： H01F1/18 , C22C38/00 , C22C38/60 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To improve a magnetic characteristic effectively by preventing nitriding during annealing in a nitrogen atmosphere and provide an electromagnetic steel sheet further having an improved weldability. SOLUTION: In an electromagnetic steel sheet that contains Al and/or Si as essential elements and has an insulating coating film on its surface, one or more kinds of nitriding suppressing components selected from Se, Te, As, Sb, P, Bi, Sn and B in a range from 0.005 to 0.5 mass % are contained in the whole steel sheet including the insulating coating film.

7. 发明专利

JP2000144348A NONORIENTED SILICON STEEL SHEET FOR ROTARY APPARATUS SMALL IN MAGNETIC ANISOTROPY IN HIGH FREQUENCY AREA AND ITS PRODUCTION 失效
公开(公告)号：JP2000144348A
公开(公告)日：2000-05-26
申请号：JP31743798
申请日：1998-11-09
申请人： KAWASAKI STEEL CO
发明人： HONDA ATSUTO , KONO MASAKI , KOMORI YUKA , FUJITA AKIO , FUJIYAMA TOSHIRO , SAKAI TAKASHI
IPC分类号： B21B3/02 , C21D8/12 , C22C38/00 , C22C38/60 , H02K15/02
摘要： PROBLEM TO BE SOLVED: To produce a nonoriented silicon steel sheet small in magnetic anisotropy in a high-frequency area and, further, capable of obtaining good motor characteristics. SOLUTION: This steel sheet has a compsn. contg., by weight, =0.03.W15/50(L+C)+1.63, and moreover, the ratio of D core loss W10/400(D) W/kg to the L-C average core loss W10/400(L+C) W/kg in 1.0 T and 400 Hz satisfies the range of W10/400(D)/W10/400(L+C)

8. 发明专利

JP2000054155A SILICON STEEL SHEET WITH INSULATING FILM EXCELLENT IN NITRIDING PREVENTABILITY, ADHESION AND CORROSION- RESISTANCE AND ITS PRODUCTION 失效
公开(公告)号：JP2000054155A
公开(公告)日：2000-02-22
申请号：JP21889798
申请日：1998-08-03
申请人： KAWASAKI STEEL CO
发明人： KOMORI YUKA , OZAKI YOSHIHIRO , HONDA ATSUTO , FUJITA AKIO , KONO MASAKI
IPC分类号： C23C22/00 , C23C22/74 , H01F1/18
摘要： PROBLEM TO BE SOLVED: To obtain a steel sheet excellent in nitriding-preventability, adhesion and corrosion resistance by incorporating a material contg. a specified amt. of element such as Se or the like into an insulating film and controlling the content of Cl to a specified value or lower. SOLUTION: In a silicon steel sheet with an insulating film hardly soluble in water, the inside of the insulating film is incorporated with a material contg. at least one kind of element selected from among Se, Te, As, Sb, P, S, Bi and Sn in such a manner that the total content of the elements is controlled to 0.001 to 1.5 g/m2 per unit area, and the content of Cl is controlled to

9. 发明专利

JPH11236618A PRODUCTION OF LOW CORE LOSS NONORIENTED SILICON STEEL SHEET 失效
公开(公告)号：JPH11236618A
公开(公告)日：1999-08-31
申请号：JP5738098
申请日：1998-02-24
申请人： KAWASAKI STEEL CO
发明人： FUJITA AKIO , KONO MASAKI , HONDA ATSUTO
IPC分类号： C21D8/12 , C22C38/00 , C22C38/06 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To moreover reduce a core loss in a steel sheet by performing a nonoriented silicon steel hot rolled sheet in which the contents of C, Si, Mn and Al are specified and the intrusion of S, N and O is suppressed, to specified cold rolling holding specified intermediate annealing after annealing and thereafter executing specified final finish annealing. SOLUTION: A nonorentd silicon steel slab having a compsn. contg., by weight, =50 μm and then, final cold rolling is executed at a draft of 45 to 65. After that, the cold rolled sheet is performed to final finish annealing at 900 to 1,100 deg.C for 10 sec to 5 min.

10. 发明专利

JPH09104924A PRODUCTION OF GRAIN-ORIENTED SILICON STEEL SHEET EXCELLENT IN MAGNETIC PROPERTY 失效
公开(公告)号：JPH09104924A
公开(公告)日：1997-04-22
申请号：JP28638795
申请日：1995-10-09
申请人： KAWASAKI STEEL CO
发明人： OZAKI YOSHIHIRO , MURAKI MINEO , FUJITA AKIO
IPC分类号： C21D8/12
摘要： PROBLEM TO BE SOLVED: To produce a grain-oriented silicon steel sheet having excellent mag netic properties stably in the rolling direction by specifying the induction heating temp. of a silicon steel slab in which the contents of C and Si are prescribed and the treating conditions from the completion of heating to the completion of rough rolling. SOLUTION: A silicon steel slab contg., by weight, 0.02 to 0.10% C and 2.0 to 5.5% Si is heated, is subjected to hot rolling and is subjected to hot rolled sheet annealing. Next, it is subjected to cold rolling for one time or >= two times including process annealing and is rolled to regulate its sheet thickness into a final one, and the surface of the steel sheet is applied with a separation agent for annealing, and final finish annealing is executed to produce a grain- oriented silicon steel sheet. At this time, the silicon steel slab is heated to >=1350 deg.C by induction heating, and the time(t) (sec) from the completion of the slab heating to the completion of the rough rolling at >=75% cumulative draft is regulated to the range satisfying the inequality [a: the thickness (mm) of the slab at the time of the induction heating and SRT: the temp. ( deg.C) of the slab at the time of extraction from an induction heating furnace].

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