基本信息:
- 专利标题： 내진 성능 및 용접 열영향부의 저온 인성이 뛰어난 고강도 ＵＯＥ 강관
- 专利标题（英）：High-strength uoe steel pipe excellent in earthquake-proof performance and in low-temperature toughness of weld heat-affected zone
- 专利标题（中）：高强度钢管优良的地震性能和焊接热影响区的低温韧性
- 申请号：KR1020107023805 申请日：2009-03-24
- 公开(公告)号：KR1020100124348A 公开(公告)日：2010-11-26
- 发明人： 다카하시노부아키 , 야마모토아키오 , 하마다마사히코
- 申请人： 신닛테츠스미킨 카부시키카이샤
- 申请人地址： *-*, Marunouchi *-chome, Chiyoda-ku, Tokyo, Japan
- 专利权人： 신닛테츠스미킨 카부시키카이샤
- 当前专利权人： 신닛테츠스미킨 카부시키카이샤
- 当前专利权人地址： *-*, Marunouchi *-chome, Chiyoda-ku, Tokyo, Japan
- 代理人： 한양특허법인
- 优先权： JPJP-P-2008-081162 2008-03-26
- 国际申请： PCT/JP2009/055817 2009-03-24
- 国际公布： WO2009119579 2009-10-01
- 主分类号： C22C38/00
- IPC分类号： C22C38/00 ; C22C38/16 ; C22C38/58
Superior in earthquake proofing performance and low-temperature toughness of the welding heat affected portion, for example, high-strength UOE steel pipe to provide adequate for use in a pipeline installed on permafrost regions or gnome generation of cold. C: 0.03% ~0.07%, Si: 0.05% ~0.50%, Mn: 1.6% ~2.2%, P: 0.020% or less, S: 0.003% or less, Cu: 0.20% ~0.60%, Cr: 0.10% or less, Ni: 0.20% ~0.80%, Nb: 0.005% ~0.030%, Ti: 0.005% ~0.030%, N: 0.0070% or less, Al: 0.005% ~0.060%, formed of a balance of Fe and impurities, the hardenability index Pcm that is not more than 0.22%, also, Cu + Cr + Ni: 0.4% ~1.5% being the addition, Nb + Mo + V: 0.05% or less and the steel has a composition, at least 480MPa yield strength in the axial direction is, the yield ratio of 85% or less, and also, the Charpy absorbed energy in the HAZ is less than 40J UOE steel pipe at -40 ℃.
信息查询:
EspacenetIPC结构图谱:
| C | 化学；冶金 |
| --C22 | 冶金（铁的冶金入C21）；黑色或有色金属合金；合金或有色金属的处理 |
| ----C22C | 合金 |
| ------C22C38/00 | 铁基合金，例如合金钢 |