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21. 发明专利

JP2000275172A ATOMIC ABSORPTION ANALYSIS METHOD AND APPARATUS 失效
公开(公告)号：JP2000275172A
公开(公告)日：2000-10-06
申请号：JP7963199
申请日：1999-03-24
申请人： NIPPON KOKAN KK
发明人： AKIYOSHI TAKANORI , CHINO ATSUSHI , SUGIMOTO KAZUMASA , ISHIDA TOMOHARU
IPC分类号： G01N1/28 , G01N21/31
摘要： PROBLEM TO BE SOLVED: To hold conventional characteristics of an atomic absorption method while expanding a measuring concn. range by irradiating the atomic layer of a sample with laser beam with a specific wavelength and measuring the presence amt. of an element to be analyzed in the sample from the attenuation quantity of the intensity of the transmitted laser beam. SOLUTION: The beam emitted from a wavelength variable laser 1 is converted to beam with a proper diameter by an incident optical system 2 and this beam passes through the atomic vapor layer 4 formed in an atomizing part 3 to transmit through a spectroscope or optical filter 6 through a photometric optical system 5 and the intensity thereof is measured by an intensity-of-light detector 7 such as a photomultiplier. At this time, the wavelength of the wavelength variable laser 1 is set to that of laser beam with a wavelength half value width of 0.001-0.002 nm wherein an output wavelength is adjusted to the center position ±0.001 nm of an element to be analyzed entered in literature to be known and this wavelength beam is absorbed by the atomic vapor layer 4. On the basis of the relation between the absorption quantity and concn. of a sample with known concn., the concn. of the sample is calculated from the absorption quantity of the sample to be analyzed. By this constitution, the narrowness of a measuring concn. range being a defect of an atomic absorption method is eliminated.

22. 发明专利

JP2000239802A Fe-Ni ALLOY SHEET EXCELLENT IN ETCHING PIERCEABILITY AND SHADOW MASK 失效
公开(公告)号：JP2000239802A
公开(公告)日：2000-09-05
申请号：JP3806699
申请日：1999-02-17
申请人： NIPPON KOKAN KK
发明人： CHINO ATSUSHI , HYODO TOMOAKI , OKIMOTO SHINICHI , UCHINO TOMOHIKO
IPC分类号： H01J29/07 , C22C38/00 , C22C38/08 , C23F1/00
摘要： PROBLEM TO BE SOLVED: To prevent the abnormality of the shape of pores and linear defects generated at the time of etching piercing by controlling the total number or grain size of oxide inclusions contained in an alloy sheet obtd. by casting and rolling or the amt. and grain size of oxide based inclusions to specified value. SOLUTION: The total number of oxide based inclusions contained in an Fe-Ni alloy sheet is controlled to =5 μm grain size is controlled to =5 μm is controlled to about

23. 发明专利

JP2000137015A NONAQUEOUS SOLVENT ELECTROLYTE FOR EXTRACTING INCLUSION OR DEPOSIT IN IRON STEEL SAMPLE, AND ELECTROLYTIC EXTRACTION METHOD OF IRON STEEL SAMPLE 失效
公开(公告)号：JP2000137015A
公开(公告)日：2000-05-16
申请号：JP31070998
申请日：1998-10-30
申请人： NIPPON KOKAN KK
发明人： ONO TAKATOSHI , CHINO ATSUSHI
IPC分类号： G01N15/02 , G01N27/26 , G01N33/20
摘要： PROBLEM TO BE SOLVED: To extraction-separate an inclusion and/or a deposit in iron steel without generating decomposition, and to dissolve a large amount of an iron steel sample at once. SOLUTION: This electrolyte contains maleic anhydride, tetramethyl ammonium chloride and methanol, and a concentration A (g/l) of the maleic anhydride and a concentration B (g/l) of the tetramethyl ammonium chloride satisfy the relations of 30

24. 发明专利

JPH11229097A NONORIENTED SILICON STEEL SHEET REDUCED IN CORE LOSS 失效
公开(公告)号：JPH11229097A
公开(公告)日：1999-08-24
申请号：JP4630398
申请日：1998-02-13
申请人： NIPPON KOKAN KK
发明人： ODA YOSHIHIKO , YAMAGAMI NOBUO , HIURA AKIRA , TANAKA YASUSHI , CHINO ATSUSHI , YAMADA KATSUMI , MATSUOKA HIDEKI , TAKAHASHI NORITAKA
IPC分类号： C22C38/00 , C22C38/60 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To stably provide a nonoriented silicon steel sheet reduced in core loss. SOLUTION: This steel sheet has a composition consisting of, by weight,

25. 发明专利

JP2888226B2 失效
公开(公告)号：JP2888226B2
公开(公告)日：1999-05-10
申请号：JP11416797
申请日：1997-04-17
申请人： NIPPON KOKAN KK
发明人： ODA YOSHIHIKO , YAMAGAMI NOBUO , HIURA AKIRA , TANAKA YASUSHI , TAKAHASHI NORITAKA , MATSUOKA HIDEKI , CHINO ATSUSHI , YAMADA KATSUMI
IPC分类号： C22C38/00 , C22C38/60 , H01F1/16

26. 发明专利

JPH11108829A METHOD AND DEVICE FOR ONLINE ANALYSIS OF MOLTEN METAL 失效
公开(公告)号：JPH11108829A
公开(公告)日：1999-04-23
申请号：JP28114397
申请日：1997-09-30
申请人： NIPPON KOKAN KK
发明人： AKIYOSHI TAKANORI , SAKASHITA AKIKO , ISHIBASHI YOICHI , CHINO ATSUSHI , MAEKAWA TOSHIYA
IPC分类号： G01N33/20 , G01N21/31
摘要： PROBLEM TO BE SOLVED: To permit the analysis of the concentration of an element in molten metal by irradiating the surface of the molten metal with both laser light with an output wavelength adjusted to the absorption wavelength of the element and reference laser light and measuring a reference wavelength in reflected light and the laser light intensity of the absorption wavelength. SOLUTION: Laser light with a reference wavelength generated by a device 12 for emitting laser light with a reference wavelength is condensed by a condensing lens 2 via a beam splitter 13 and is brought to be incident onto an optical fiber 3 together with laser light with an absorption wavelength generated by a device 1 for emitting laser light with an absorption wavelength. The laser light with a reference wavelength and laser light with an absorption wavelength which come out of the other end of the optical fiber 3 are passed through a metallic vapor phase 8 and reflected at the surface of molten metal 9. The reflected laser light is passed through the optical fiber 3 and guided to a photo detector 6. In the photo detector 6, the intensities of the laser light with a reference wavelength and the laser light with an absorption light at each wavelength are measured to obtain the concentration of an element to be analyzed in the metallic vapor phase 8.

27. 发明专利

JPH1112653A MANUFACTURE OF NONORIENTED SILICON STEEL SHEET REDUCED IN IRON LOSS AFTER MAGNETIC ANNEALING 失效
公开(公告)号：JPH1112653A
公开(公告)日：1999-01-19
申请号：JP18605197
申请日：1997-06-27
申请人： NIPPON KOKAN KK
发明人： HIURA AKIRA , ODA YOSHIHIKO , CHINO ATSUSHI , YAMADA KATSUMI , KOIKE TAKEHIDE , MATSUOKA HIDEKI
IPC分类号： C21D8/12 , C22C38/00 , C22C38/60 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacture of a nonoriented silicon steel sheet reduced in iron loss after magnetic annealing without increasing costs. SOLUTION: A slab, having a composition consisting of, by weight,

28. 发明专利

JPH09227993A DEAD SOFT COLD ROLLED STEEL SHEET HAVING <=1% YIELD POINT ELONGATION AS-ANNEALED 失效
公开(公告)号：JPH09227993A
公开(公告)日：1997-09-02
申请号：JP3213896
申请日：1996-02-20
申请人： NIPPON KOKAN KK
发明人： ISHIGURO YASUHIDE , SATO KAORU , MURAYAMA HISASHI , CHINO ATSUSHI , SHIMA YOSHINOBU
IPC分类号： C22C38/00 , C22C38/16
摘要： PROBLEM TO BE SOLVED: To produce a dead soft cold rolled steel sheet having

29. 发明专利

JPH09195011A NONORIENTED SILICON STEEL SHEET EXCELLENT IN LOW MAGNETIC FIELD PROPERTY 失效
公开(公告)号：JPH09195011A
公开(公告)日：1997-07-29
申请号：JP28421696
申请日：1996-10-25
申请人： NIPPON KOKAN KK
发明人： ODA YOSHIHIKO , HIURA AKIRA , SATO KAORU , CHINO ATSUSHI
IPC分类号： C22C38/00 , C22C38/16 , H01F1/147 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To produce a nonoriented silicon steel sheet excellent in magnetic properties in the low magnetic field by preparing a nonoriented silicon steel sheet having a specified componental compsn. in which the contents of V and N are prescribed by a specified inequality. SOLUTION: A nonoriented silicon steel sheet having a compsn. contg., by weight,

30. 发明专利

JPH07237099A POLISHING DEVICE FOR THIN PLATE 失效
公开(公告)号：JPH07237099A
公开(公告)日：1995-09-12
申请号：JP5815994
申请日：1994-03-02
申请人： NIPPON KOKAN KK , HARUTSUOKU JAPAN KK
发明人： KOTO NAOKI , FUNABIKI YOSHIHIRO , YOSHIKAWA HIROYASU , CHINO ATSUSHI , TSUJIMOTO TADAO
IPC分类号： B24B7/04 , B24B29/00 , B24B41/06 , B24D13/10
摘要： PURPOSE:To accurately polish a plate being thin in its thickness. CONSTITUTION:Thin plates (a polished member) 1a to 1f are stuck onto a metallic (magnetic) disc with a double faced tape, and severally fixed to magnet type fixing bases 31 to 36 arranged at six positions on a turn table 2. A brush 6 begins to rotate, and the turn table 2 rotates, and the thin plate 1a fixed to the fixing base 31 moves to a position A in front of the brush 6. The fixing base 31 rotates on the spot, and the thin plate 1a also rotates. The brush 6 polishes the thin plate 1a on the fixing base 31. In addition, the brush 6 horizontally reciprocates in a B direction as it polishes the thin plate 1a. When polishing is finished, the brush 6 returns to its original position, and the turntable 2 rotates, and the thin plate 1b on the fixing base 32 similarly arrives at the position A, and is similarly polished, and then the thin plates 1c to 1f on the fixing bases 33 to 36 are polished, and when six sheets of thin plates have been wholly polished, a polishing device stops.

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