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1. 发明专利

JP2002154886A SLOW-ACTING POTASH FERTILIZER 失效
公开(公告)号：JP2002154886A
公开(公告)日：2002-05-28
申请号：JP2000343976
申请日：2000-11-10
申请人： NIPPON KOKAN KK
发明人： HAMADA ETSUO , YAO YASUKO , TAKAHASHI TATSUTO , ISOO NORIO
IPC分类号： C05D11/00
摘要： PROBLEM TO BE SOLVED: To produce a potash fertilizer having a good slow-acting property regardless of components exclusive of K2O. SOLUTION: This slow-acting potash fertilizer consists essentially of K2O, SiO2 and CaO and contains Al2O3, MgO, MnO and Fe2O as selective components. The content of K2O thereof is below the threshold at which the ratio of water- soluble K2O rises.

2. 发明专利

JP2001316842A SURFACE TREATED STEEL SHEET HAVING HIGH CORROSION RESISTANCE AND METHOD FOR PRODUCTION THEREOF 失效
公开(公告)号：JP2001316842A
公开(公告)日：2001-11-16
申请号：JP2000130328
申请日：2000-04-28
申请人： NIPPON KOKAN KK
发明人： YAMAJI TAKAFUMI , MATSUZAKI AKIRA , HAMADA ETSUO , YAMASHITA MASAAKI
IPC分类号： C23C22/28 , C23C2/06 , C23C2/12 , C23C2/40 , C23C22/30 , C23C28/00
摘要： PROBLEM TO BE SOLVED: To provide a surface treated steel sheet that has a high corrosion resistance, remarkably suppresses a progress of corrosion from a worked part, also has a great suppressive effect against blackening of the surface under the environment of high temperature and high humidity and furthermore, is excellent in workability, and provide a production method for the steel sheet. SOLUTION: The surface of a zinc plating steel sheet containing zinc of 30 wt.% or more, has a film in which an organic resin, Cr, Ca and silica or a silica compound are contained, wherein the coating weight of the organic resin is 50 mg/m2 or above and 5000 mg/m2 or below, the coating weight of Cr is 1 mg/m2 over and 100 mg/m2 below, the coating weight of Ca is 0.001 or above and 0.2 or below as Ca/organic resin (wt.ratio) and the coating weight of silica or the silica compound is 0.001 or above and 0.5 or below as SiO2/ organic resin (wt.ratio).

3. 发明专利

JP2001316838A METHOD OF PRODUCING SURFACE TREATED STEEL SHEET HAVING HIGH CORROSION RESISTANCE 失效
公开(公告)号：JP2001316838A
公开(公告)日：2001-11-16
申请号：JP2000130331
申请日：2000-04-28
申请人： NIPPON KOKAN KK
发明人： YAMAJI TAKAFUMI , MATSUZAKI AKIRA , HAMADA ETSUO , YAMASHITA MASAAKI
IPC分类号： C23C22/12 , C22C18/04 , C23C2/06 , C23C2/12 , C23C2/40 , C23C22/20 , C23C22/24 , C23C28/00
摘要： PROBLEM TO BE SOLVED: To provide a method of producing a surface treated steel sheet that has a high corrosion resistance, remarkably suppresses a progress of corrosion from a worked part, also has a great suppressive effect against blackening of the surface under the environment of high temperature and high humidity and is excellent in workability. SOLUTION: The surface of a zinc plating steel sheet containing zinc of 30 wt.% or more, is subjected to a chromate treating, is coated with a treatment agent containing an organic resin, Ca compound and one or more selected from zinc phosphate, aluminum phosphate, condensed zinc phosphate and condensed aluminum phosphate and is dried at a sheet temperature of 60 deg.C or above and 250 deg.C or below to form a film. In the above film, the coating weight of the organic resin is 50 mg/m2 or above and 5000 mg/m2 or below, the coating weight of Cr is 1 mg/m2 or above and 100 mg/m2 or below, the coating weight of Ca is 0.001 or above and 0.2 or below as Ca/organic resin (wt.ratio) and the total coating weight of a phosphate compound is 0.001 or above and 0.5 or below as PO4/organic resin (wt.ratio).

4. 发明专利

JP2001107264A RESIN CHROMATE TREATED METALLIC SHEET 失效
公开(公告)号：JP2001107264A
公开(公告)日：2001-04-17
申请号：JP32591599
申请日：1999-10-12
申请人： NIPPON KOKAN KK
发明人： HAMADA ETSUO , MORITA KENJI , SATO KAORU , MATSUZAKI AKIRA , YAMAJI TAKAFUMI
IPC分类号： B05D7/14 , B05D7/24 , C23C22/33 , C23C28/00
摘要： PROBLEM TO BE SOLVED: To provide a resin chromate treated metallic sheet free from environmental contamination, in which unevenness in appearance caused by blackening and dew condensation is hard to occur and capable of maintaining a beautiful surface appearance over a long period by realizing resin chromate excellent in corrosion resistance while chromium is made hard to dissolve. SOLUTION: This resin chromate treated metallic sheet is obtained by depositing a resin chromate film essentially consisting of a chromium compound and a water soluble or water dispersible resin on the surface of an Al-Zn series alloy plating film. In this sheet, the greater part of chromium is present as a trivalent compound compounded with phosphorous.

5. 发明专利

JP2000329664A OBSERVATION METHOD OF TRANSMISSION ELECTRON MICROSCOPE AND HOLDING JIG 失效
公开(公告)号：JP2000329664A
公开(公告)日：2000-11-30
申请号：JP13675499
申请日：1999-05-18
申请人： NIPPON KOKAN KK
发明人： HAMADA ETSUO
IPC分类号： G01N1/32 , G01N1/28
摘要： PROBLEM TO BE SOLVED: To obtain an observation method of a transmission electron microscope whereby an observation sample can be TEM observed without disturbing a magnetic field of an electromagnetic lens even when the observation sample is a magnetic material, and obtain a holding jig which can stably hold the sample. SOLUTION: When a magnetic material is used as a sample for TEM, the sample 1 of the magnetic material is processed by the FIB method to a volume of not larger than 0.025 mm3. The sample 1 of the volume has a lateral width of 2 mm or smaller. A sample holding ring 2 has a ring width 2b whereby the sample 1 of the lateral width of 2 mm or smaller can be held to the vicinity of a center part of the ring 2. The sample 1 is held to the vicinity of the center part of the ring 2, to which a TEM observation is executed. A magnetic field of a TEM electromagnetic lens will not be disturbed by the other part than an observation area of the sample 1, so that an efficiency of the TEM observation and of a TEM-EDX analysis is greatly improved.

6. 发明专利

JP2000212712A PRODUCTION OF P-CONTAINING HIGH STRENGTH GALVANIZED STEEL SHEET AND HIGH STRENGTH GALVANNEALED STEEL SHEET 失效
公开(公告)号：JP2000212712A
公开(公告)日：2000-08-02
申请号：JP1027999
申请日：1999-01-19
申请人： NIPPON KOKAN KK
发明人： TAIRA SHOICHIRO , SUGIMOTO YOSHIHARU , SAKURAI MICHITAKA , SAGIYAMA MASARU , NORO HISATO , HAMADA ETSUO
IPC分类号： C23C2/02 , C23C2/06
摘要： PROBLEM TO BE SOLVED: To provide a galvanized steel sheet excellent in uniformity and stickiness of a coated film, and a producing method, with which a galvannealed steel sheet without generating uneven alloying and excellent in powdering resistance can stably be produced. SOLUTION: In this producing process of a high strength galvanized steel sheet, with which the high strength steel sheet containing by wt.% >=0.02% P and/or >=0.2% Mn, is heated and annealed under non-oxidizing atmosphere and thereafter, dipped into a galvanizing bath containing Al to execute the galvanizing, or the producing process of the high strength galvannealed steel sheet further executing the alloying heat treatment of the galvanized coating, a coating composed of one or more kinds selected among metallic compounds of Ni, Co, Sn and Cu base in the range of 1-200 mg/m2 as an amount converted into the metallic quantity, is stuck on the surface of the steel sheet prior to annealing.

7. 发明专利

JP2000054100A HOT-DIP ALUMINUM-ZINC ALLOY COATED STEEL SHEET EXCELLENT IN WHITE RUST RESISTANCE 失效
公开(公告)号：JP2000054100A
公开(公告)日：2000-02-22
申请号：JP23799198
申请日：1998-08-10
申请人： NIPPON KOKAN KK
发明人： MORITA KENJI , HAMADA ETSUO , OKUDE SHINYA , SATO KAORU , OI TOSHIHIKO
IPC分类号： B05D7/14 , C23C2/06 , C23C2/12 , C23C28/00
摘要： PROBLEM TO BE SOLVED: To provide a hot-dip Al-Zn alloy coated steel sheet extremely excellent in corrosion resistance. SOLUTION: Corrosion of a hot-dip Al-Zn alloy coated steel sheet takes place with a coarse β-Zn crystalline grain as the starting point, and a plated steel sheet having excellent white rust resistance can be obtained by reducing the percentage of the coarse β-Zn crystalline grain to the prescribed level. This steel sheet is a hot-dip Al-Zn alloy coated steel sheet in which Al is contained by 20 to 95 wt.% in a plating film and coating weight per side is regulated to (15 to 100) g/m2. In an arbitrary section of the plating film, =0.5 μm grain size is regulated to

8. 发明专利

JP2002211993A SLOW-ACTING POTASH FERTILIZER AND METHOD OF PREPARATION FOR THE SAME 失效
公开(公告)号：JP2002211993A
公开(公告)日：2002-07-31
申请号：JP2001035284
申请日：2001-02-13
申请人： NIPPON KOKAN KK
发明人： YAO YASUKO , HAMADA ETSUO , WATANABE KEIJI , ISOO NORIO , TAKAHASHI TATSUTO , MATSUBARA KENJI
IPC分类号： C05D1/00
摘要： PROBLEM TO BE SOLVED: To provide a slow-acting potash fertilizer which is capable of supplying a necessary amount of potassium in a season necessary for crops. SOLUTION: The slow-acting potash fertilizer includes a water-soluble potash compound containing K2O and SiO2 and further containing one or >=kinds selected from the group consisting of CaO, MgO, MnO and FetO and a water-soluble potash compound containing K2O and SiO2 and further containing or not containing one or >=kinds selected from the group consisting of CaO, MgO, MnO and FetO.

9. 发明专利

JP2001316844A SURFACE TREATED STEEL SHEET HAVING HIGH CORROSION RESISTANCE AND METHOD FOR PRODUCTION THEREOF 失效
公开(公告)号：JP2001316844A
公开(公告)日：2001-11-16
申请号：JP2000130332
申请日：2000-04-28
申请人： NIPPON KOKAN KK
发明人： YAMAJI TAKAFUMI , MATSUZAKI AKIRA , HAMADA ETSUO , YAMASHITA MASAAKI
IPC分类号： C23C22/33 , C23C2/06 , C23C2/12 , C23C2/40 , C23C22/26 , C23C22/28 , C23C22/30 , C23C28/00
摘要： PROBLEM TO BE SOLVED: To provide a surface treated steel sheet that has a high corrosion resistance, remarkably suppresses a progress of corrosion from a worked part, also has a great suppressive effect against blackening of the surface under the environment of high temperature and high humidity and furthermore, is excellent in workability, and provide a production method for the steel sheet. SOLUTION: The surface of a zinc plating steel sheet containing zinc of 30 wt.% or above, has a film is which an organic resin, Cr, and a complex compound having Ca-PO4-SiO2 as a main component are contained, wherein the coating weight of the organic resin is 50 mg/m2 or above and 5,000 mg/m2 or below, the coating weight of Cr is 1 mg/m2 or above and 100 mg/m2 or below, (Ca+SiO2+PO4)/the organic resin is 0.01-0.5 in wt.ratio and (Ca+SiO2)/ PO4 is 0.05-0.8 in wt. ratio.

10. 发明专利

JP2001316840A PRODUCTION METHOD FOR SURFACE TREATED STEEL SHEET HAVING HIGH CORROSION RESISTANCE 失效
公开(公告)号：JP2001316840A
公开(公告)日：2001-11-16
申请号：JP2000130329
申请日：2000-04-28
申请人： NIPPON KOKAN KK
发明人： YAMAJI TAKAFUMI , MATSUZAKI AKIRA , HAMADA ETSUO , YAMASHITA MASAAKI
IPC分类号： C23C22/24 , C23C2/06 , C23C2/12 , C23C2/40 , C23C22/00 , C23C28/00
摘要： PROBLEM TO BE SOLVED: To provide a production method for a surface treated steel sheet that has a high corrosion resistance, remarkably suppresses a progress of corrosion from a machined part, also has a great suppressive effect against blackening of the surface under the environment of high temperature and high humidity and is excellent in workability. SOLUTION: The surface of a zinc plating steel sheet containing zinc of 30 wt.% or more, is subjected to a chromate treating, is coated with a treatment agent containing an organic resin, Ca compound and silica or silica compound, and is dried at a sheet temperature of 60 deg.C or above and 250 deg.C or below to form a film. In the above film, the coating weight of the organic resin is 50 mg/m2 or above and 5,000 mg/m2 or below, the coating weight of Cr is 1 mg/m2 or above and 100 mg/m2 or below, the coating weight of Ca is 0.001 or above and 0.2 or below as Ca/the organic resin (wt.ratio) and the adhesive content of silica or silica compound is 0.001 or above and 0.5 or below as SiO2/the organic resin (wt.ratio).

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