Invention Grant
- Patent Title: Austenitic welding material, and preventive maintenance method for stress corrosion cracking and preventive maintenance method for intergranular corrosion, using same
- Patent Title (中): 奥氏体焊接材料，以及应力腐蚀开裂的预防性维护方法和晶间腐蚀的预防性维护方法
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Application No.: US13140674Application Date: 2009-12-16
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Publication No.: US08322592B2Publication Date: 2012-12-04
- Inventor: Kiyoshi Kiuchi , Ikuo Ioka , Chiaki Kato , Nobutoshi Maruyama , Ichiro Tsukatani , Makoto Tanabe , Jumpei Nakayama
- Applicant: Kiyoshi Kiuchi , Ikuo Ioka , Chiaki Kato , Nobutoshi Maruyama , Ichiro Tsukatani , Makoto Tanabe , Jumpei Nakayama
- Applicant Address: JP Naka-gun JP Kobe-shi JP Kobe-shi
- Assignee: Japan Atomic Energy Agency,Kobelco Research Institute, Inc.,Kabushiki Kaisha Kobe Seiko Sho
- Current Assignee: Japan Atomic Energy Agency,Kobelco Research Institute, Inc.,Kabushiki Kaisha Kobe Seiko Sho
- Current Assignee Address: JP Naka-gun JP Kobe-shi JP Kobe-shi
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-322639 20081218
- International Application: PCT/JP2009/070965 WO 20091216
- International Announcement: WO2010/071146 WO 20100624
- Main IPC: B23K31/02
- IPC: B23K31/02 ; B23K35/24
Abstract:
Disclosed is an austenitic welding material which contains C: 0.01 wt % or less, Si: 0.5 wt % or less, Mn: 0.5 wt % or less, P: 0.005 wt % or less, S: 0.005 wt % or less, Ni: 15 to 40 wt %, Cr: 20 to 30 wt %, N: 0.01 wt % or less, O: 0.01 wt % or less, and the balance of Fe and inevitable impurities, wherein the content of B contained as one of the inevitable impurities in the welding material is 3 wt ppm or less, and the total content of C, P, S, N and O in the welding material is 0.02 wt % or less.
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