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1.发明授权
公开(公告)号：EP0013507B2
公开(公告)日：1989-03-08
申请号：EP79303031.3
申请日：1979-12-21
发明人： Ito, Naoya , Saito, Kiichi , Yoshida, Takeshi , Aoki, Masahiro , Okubo, Masao , Miki, Masayoshi
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2.发明公开High silicon chromium nickel steel and a method of using it to inhibit corrosion of apparatus by strong nitric acid 失效Hochsiliziumhaltiger铬 - 镍钢，并在由强硝酸防止装置的腐蚀使用方法。
公开(公告)号：EP0013507A1
公开(公告)日：1980-07-23
申请号：EP79303031.3
申请日：1979-12-21
发明人： Ito, Naoya , Saito, Kiichi , Yoshida, Takeshi , Aoki, Masahiro , Okubo, Masao , Miki, Masayoshi
摘要： A high-silicon-nickel-chromium steel resistant to concentrated nitric acid with a good workability and a good weldability, comprises
carbon in an amount of not more than 0.03% (C ≤ 0.03%),
silicon in an amount of from more than 5%to not more than 7% (5%
manganese in an amount of not more than 10% (Mn ≤ 10%),
chromium in an amount of from not less than 7% to not more than 16% (7% ≤ Cr ≤ 16%),
nickel in an amount of from not less than 10% to less than 19% (10% ≤ Ni
and the balance being iron and inevitable impurities. percentages being by weight.
This steel can be used to provide corrosion resistant surfaces in apparatuses to be brought into contact with concentrated nitric acid.-
3.发明授权Method of reducing or avoiding surface defects in a specific steel resistant to concentrated nitric acid 失效减少或避免表面缺陷在特定耐钢中的浓缩硝酸的方法
公开(公告)号：EP0037959B1
公开(公告)日：1984-10-24
申请号：EP81102442.1
申请日：1981-03-31
发明人： Ito, Naoya , Yoshida, Takeshi , Aoki, Masahiro , Okubo, Masao , Miki, Masayoshi
CPC分类号： C22C38/50 , C21C7/0006 , C22C38/48 , C22C38/58
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4.发明授权
公开(公告)号：EP0013507B1
公开(公告)日：1983-04-13
申请号：EP79303031.3
申请日：1979-12-21
发明人： Ito, Naoya , Saito, Kiichi , Yoshida, Takeshi , Aoki, Masahiro , Okubo, Masao , Miki, Masayoshi
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5.发明公开Method of reducing or avoiding surface defects in a specific steel resistant to concentrated nitric acid 失效一种用于在材料耐浓硝酸钢减少或防止表面缺陷的方法。
公开(公告)号：EP0037959A1
公开(公告)日：1981-10-21
申请号：EP81102442.1
申请日：1981-03-31
发明人： Ito, Naoya , Yoshida, Takeshi , Aoki, Masahiro , Okubo, Masao , Miki, Masayoshi
CPC分类号： C22C38/50 , C21C7/0006 , C22C38/48 , C22C38/58
摘要： A method for improving (reducing or avoiding) surface defects in a specific steel resistant to concentrated nitric acid is described, wherein the specific steel in the molten state is either a stainless steel comprising C≦ 0.1 wt%. 2.5≦Si≦ 5 wt%. Mn≦2 wt%.
15≦Cr≦20 wt%. 10≦Ni≦22 wt%.
C x 10≦ at least one of Nb. Ta and Zr≦2.5 wt%.
the balance being iron and inevitable impurities.
or a high-silicon-nickel-chromium steel comprising
C≦0.03 wt% 5≦ Si≦7 wt%. Mn≦10 wt%.
7≦Cr≦16 wt% 10≦Ni≦19 wt%.
C 4≦ at least one of Nb. Ta and Zr≦ 2 wt%
the balance being iron and inevitable impurities. and is admixed with titanium (0.05≦Ti≦0.2wt%) when producing said steel.
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