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公开(公告)号:US20170199129A1
公开(公告)日:2017-07-13
申请号:US15324176
申请日:2015-05-14
发明人: Satoshi Kinoshiro , Masao Inose
IPC分类号: G01N21/67 , G01N33/20 , B22D11/16 , B22D11/00 , C21C7/10 , B22D11/108 , C22C38/04 , C22C38/02 , C22C38/00 , G01N33/00 , B22D11/11
CPC分类号: G01N21/67 , B22D11/001 , B22D11/108 , B22D11/11 , B22D11/16 , C21C7/10 , C22C38/002 , C22C38/02 , C22C38/04 , G01N21/73 , G01N33/0036 , G01N33/2025 , G01N33/205
摘要: Provided are a method for analyzing nitrogen in a metal sample, an apparatus for analyzing nitrogen in a metal sample, a method for adjusting nitrogen concentration in molten steel, and a method for manufacturing steel. The method includes: a melting process in which a metal sample containing a nitrogen component is melted in an argon gas atmosphere by performing impulse heating to gasify the nitrogen component; and an analyzing process in which nitrogen content in the metal sample is determined by analyzing nitrogen gas generated in the melting process and the argon gas by using a gas discharge optical emission method. By analyzing the nitrogen concentration of a sample taken from molten steel by using the analysis method described above, and by determining treatment conditions for adjusting nitrogen concentration on the basis of the nitrogen analysis value derived by the analysis, nitrogen concentration in molten steel is adjusted.
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公开(公告)号:US11035014B2
公开(公告)日:2021-06-15
申请号:US15592693
申请日:2017-05-11
发明人: Satoshi Kinoshiro , Toshiyuki Ito , Ryo Kawabata , Toshiro Ishige , Kyoko Fujimoto , Masao Inose
IPC分类号: C21C7/064 , G01N21/64 , C21C7/00 , G01N33/00 , F27D19/00 , F27D21/00 , C21C1/02 , C21C7/06 , C21C7/10
摘要: A method for desulfurizing molten steel comprising taking a sample out from molten steel after tapping from a converter or during secondary refining and analyzing the sample rapidly with high accuracy by a method comprising a high frequency induction heating step wherein the sample is combusted and oxidized under the high frequency induction heating in an oxygen atmosphere having an oxygen purity of 99.5 vol % or more to convert S in the sample into SO2 and an analyzing step wherein SO2-containing gas produced in the high frequency induction heating step is analyzed through an ultraviolet fluorescence method to quantify S concentration of the sample.
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公开(公告)号:US10392709B2
公开(公告)日:2019-08-27
申请号:US15475393
申请日:2017-03-31
发明人: Yuka Miyamoto , Takeshi Suzuki , Hiroki Iwasa , Norihiko Nakamura , Masao Inose , Hisato Noro , Yoichi Tobiyama
IPC分类号: C23C28/02 , C25D5/10 , C25D5/12 , C25D7/00 , C25D9/08 , C25D9/10 , C25D3/02 , C25D3/12 , C21D8/02 , C21D9/46 , C23C22/50 , C23G1/08 , C25D3/20 , C25D3/22 , C25D3/38 , C25D3/54 , C25D5/36 , C25F1/00 , C25D3/30 , C25D5/50
摘要: A coated steel sheet includes a corrosion-resistant coating composed of at least one layer selected from the group consisting of a Ni layer, a Sn layer, an Fe—Ni alloy layer, an Fe—Sn alloy layer, and an Fe—Ni—Sn alloy layer disposed on at least one surface of a steel sheet, and an adhesive coating disposed on the corrosion-resistant coating, the adhesive coating containing Zr and further containing at least one metal element selected from the group consisting of Co, Fe, Ni, V, Cu, Mn, and Zn, in total, at a ratio by mass of 0.01 to 10 with respect to Zr. The coated steel sheet has excellent humid resin adhesion and corrosion resistance, in which streaky surface defects do not occur.
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公开(公告)号:US20170204521A1
公开(公告)日:2017-07-20
申请号:US15475393
申请日:2017-03-31
发明人: Yuka Miyamoto , Takeshi Suzuki , Hiroki Iwasa , Norihlko Nakamura , Masao Inose , Hisato Noro , Yoichi Tobiyama
IPC分类号: C23C28/02 , C25D3/12 , C25D3/20 , C25D3/38 , C21D8/02 , C25D5/36 , C25F1/00 , C23G1/08 , C23C22/50 , C21D9/46 , C25D3/54 , C25D3/22
CPC分类号: C23C28/021 , C21D8/0221 , C21D8/0278 , C21D9/46 , C23C22/50 , C23G1/081 , C25D3/02 , C25D3/12 , C25D3/20 , C25D3/22 , C25D3/30 , C25D3/38 , C25D3/54 , C25D5/10 , C25D5/12 , C25D5/36 , C25D5/50 , C25D5/505 , C25D7/00 , C25D9/08 , C25D9/10 , C25F1/00 , Y10T428/12569 , Y10T428/12806
摘要: A coated steel sheet includes a corrosion-resistant coating composed of at least one layer selected from the group consisting of a Ni layer, a Sn layer, an Fe—Ni alloy layer, an Fe—Sn alloy layer, and an Fe—Ni—Sn alloy layer disposed on at least one surface of a steel sheet, and an adhesive coating disposed on the corrosion-resistant coating, the adhesive coating containing Zr and further containing at least one metal element selected from the group consisting of Co, Fe, Ni, V, Cu, Mn, and Zn, in total, at a ratio by mass of 0.01 to 10 with respect to Zr. The coated steel sheet has excellent humid resin adhesion and corrosion resistance, in which streaky surface defects do not occur.
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