基本信息:
- 专利标题： 내사워성, 내압궤 특성 및 저온 인성이 우수한 후육 고강도 라인 파이프용 강판과 라인 파이프
- 专利标题（英）：Steel sheet for thick-walled high-strength line pipe having exceptional souring resistance, crush resistance properties, and low-temperature ductility, and line pipe
- 专利标题（中）：在耐酸性，粉碎特性和低温韧性，优良的高huyuk强度管线管钢板的管线管用和
- 申请号：KR1020157031929 申请日：2014-08-29
- 公开(公告)号：KR101730756B1 公开(公告)日：2017-04-26
- 发明人： 하라다쿠야 , 후지시로다이시 , 시노하라야스히로 , 츠루에이지
- 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： 장수길; 성재동
- 优先权： JPJP-P-2013-180663 2013-08-30
- 国际申请： PCT/JP2014/072833 2014-08-29
- 国际公布： WO2015030210 2015-03-05
- 主分类号： C22C38/00
- IPC分类号： C22C38/00 ; C22C38/14 ; C22C38/58 ; C21D8/02 ; C21D8/10 ; C21D9/08 ; C21D9/14
In sour resistance, crushing characteristics and low-temperature toughness, excellent huyuk high strength line pipe steel sheet, and provides a method of manufacturing the same. The plate thickness is huyuk high strength line pipe steel sheet less than 25㎜ 45㎜, the metal structure of the surface layer is a processed ferrite: 5% or more, yet also contains the S
fe1% or less to obtain by the following formula 1a, martensite-austenite mixed water (MA): the metal structure of the containing 8% or less, and the balance, of the polygonal ferrite and / or bainite, and the plate thickness center portion is processed ferrite: 5% or less, MA: 5% or less, glass blowing, acicular ferrite and / or is included one or both of bainite, and the average value of the effective crystal grain size in the surface layer part and the plate thickness center 20㎛ below.
However, T
H: thickness of the steel sheet
公开/授权文献:
- KR1020150139950A 내사워성, 내압궤 특성 및 저온 인성이 우수한 후육 고강도 라인 파이프용 강판과 라인 파이프 公开/授权日：2015-12-14
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 |