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1.发明公开
公开(公告)号：EP0138012A3
公开(公告)日：1988-07-06
申请号：EP84110385
申请日：1984-08-31
发明人： Kobayashi, Mineo Naoetsu Lab. NIPPON STAINLESS , Yoshida, Takeshi Naoetsu Lab. NIPPON STAINLESS , Aoki, Masahiro Naoetsu Lab. NIPPON STAINLESS , Ohkubo, Masao , Nagayama, Masaaki
IPC分类号： C21D08/00
摘要： This invention to a process for producing a plate or forging (bar, stamp work or the like), of ferrite-austenite two-phase stainless steel, containing at most 0.03 % C, at most 2.0 % Si, at most 2.0 % Mn, 25 to 35 % Cr, 6 to 15 % Ni,'at most 0.35 % N, remainder Fe and inevitable impurities with or without the addition of 0.001 to 0.030 % B with the following nickel balance value specified at -13 to -9: Ni balance value = Ni% + 0.5 Mn% + 30 x (C+N)%
-1.1 (Cr% + 1.5 Si%) + 8.2 The process of the invention is characterized in that the average crystal grain size is controlled to at most 0.015 mm by heating an ingot of the above-mentioned ferrite-austenite two-phase stainless steel at a temperature of at most 1,200°C and keeping the forging ratio by hot working at a value of at least 5.-
2.发明授权
公开(公告)号：EP0138012B1
公开(公告)日：1993-03-31
申请号：EP84110385.6
申请日：1984-08-31
发明人： Kobayashi, Mineo Naoetsu Lab. NIPPON STAINLESS , Yoshida, Takeshi Naoetsu Lab. NIPPON STAINLESS , Aoki, Masahiro Naoetsu Lab. NIPPON STAINLESS , Ohkubo, Masao , Nagayama, Masaaki
IPC分类号： C21D8/00
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3.发明公开Manufacturing process for plate or forging of ferrite-austenite two-phase stainless steel 失效一种用于生产由具有铁素体 - 奥氏体两相结构的不锈钢板或锻件的过程。
公开(公告)号：EP0138012A2
公开(公告)日：1985-04-24
申请号：EP84110385.6
申请日：1984-08-31
发明人： Kobayashi, Mineo Naoetsu Lab. NIPPON STAINLESS , Yoshida, Takeshi Naoetsu Lab. NIPPON STAINLESS , Aoki, Masahiro Naoetsu Lab. NIPPON STAINLESS , Ohkubo, Masao , Nagayama, Masaaki
IPC分类号： C21D8/00
摘要： This invention to a process for producing a plate or forging (bar, stamp work or the like), of ferrite-austenite two-phase stainless steel, containing at most 0.03 % C, at most 2.0 % Si, at most 2.0 % Mn, 25 to 35 % Cr, 6 to 15 %
Ni,'at most 0.35 % N, remainder Fe and inevitable impurities with or without the addition of 0.001 to 0.030 % B with the following nickel balance value specified at -13 to -9: Ni balance value = Ni% + 0.5 Mn% + 30 x (C+N)%
-1.1 (Cr% + 1.5 Si%) + 8.2
The process of the invention is characterized in that the average crystal grain size is controlled to at most 0.015 mm by heating an ingot of the above-mentioned ferrite-austenite two-phase stainless steel at a temperature of at most 1,200°C and keeping the forging ratio by hot working at a value of at least 5.
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