基本信息:
- 专利标题： 강도 및 저온 인성이 우수한 후판강재 및 그 제조방법
- 专利标题（英）：Thick steel plate having high strength and excellent low-temperature toughness and manufacturing method thereof
- 专利标题（中）：具有高强度和极好的低温韧性的厚钢板及其制造方法
- 申请号：KR1020100135221 申请日：2010-12-27
- 公开(公告)号：KR101253899B1 公开(公告)日：2013-04-16
- 发明人： 노윤조 , 장성호 , 박재현 , 홍순택
- 申请人： 주식회사 포스코
- 申请人地址： 경상북도 포항시 남구 동해안로 **** (괴동동)
- 专利权人： 주식회사 포스코
- 当前专利权人： 주식회사 포스코
- 当前专利权人地址： 경상북도 포항시 남구 동해안로 **** (괴동동)
- 代理人： 특허법인씨엔에스
- 主分类号： C22C38/00
- IPC分类号： C22C38/00 ; C21D8/02 ; C22C38/40
The present invention for a heavy plate steel excellent in strength and low-temperature toughness, in weight%, C: 0.13 ~ 0.15%, Si: 0.20 ~ 0.65%, Mn: 0.4 ~ 0.6%, Cr: 1.3 ~ 2.3%, Mo: 0.6 ~ 1.1%, Ni: 0.1 ~ 0.2%, Cu: 0.1 ~ 0.2%, Al: 0.2 ~ 0.6, P: 0.008% or less, S: 0.020% or less, comprising a balance of Fe and other unavoidable impurities, the tensile strength is 680 MPa or more, characterized in that not less than the low-temperature toughness at -20 ℃ 300J. According to the present invention, while having a high tensile strength of at least 680 MPa, or more, low-temperature toughness at -20 ℃ 300J Subsequently, safety is excellent in strength and low temperature toughness can be used in manufacturing plants of power stations and petrochemical plants are required significantly may provide a steel plate, also, it can provide the advantageous application of the heat treatment after welding of the steel plates in a high temperature short time.
公开/授权文献:
- KR1020120073448A 강도 및 저온 인성이 우수한 후판강재 및 그 제조방법 公开/授权日：2012-07-05
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 |