| 发明名称 | Austenitic heat-resisting cast steel and exhaust manifold using the same | ||
| 摘要 | An austenitic heat-resisting cast steel is disclosed which is composed mainly of Fe and including 0.4˜0.6 wt % of C, 0.5˜1.0 wt % of Si, 2.1˜2.9 wt % of Mn, 2.1˜2.9 wt % of Ni, 18˜22 wt % of Cr, 1.0˜2.0 wt % of Nb, 2.0˜3.0 wt % of W, 0.25˜0.35 wt % of N and other inevitable impurities. More specifically, this austenitic heat-resisting cast steel can beneficially be applied to an exhaust manifold of an automobile to realize a maximum allowable exhaust gas temperature of the exhaust manifold is 950° C.˜1050° C. | ||
| 申请公布号 | US8845824(B2) | 申请公布日期 | 2014.09.30 |
| 申请号 | US201113323418 | 申请日期 | 2011.12.12 |
| 申请人 | Hyundai Motor Company;Kia Motors Corporation | 发明人 | Lee Jung Suk |
| 分类号 | C22C38/42;C22C38/44;C22C38/48;C22C38/58;F01N13/10;C22C38/02;C22C38/00;F01N13/16 | 主分类号 | C22C38/42 |
| 代理机构 | Edwards Wildman Palmer LLP | 代理人 | Edwards Wildman Palmer LLP ;Corless Peter F. |
| 主权项 | 1. An austenitic heat-resisting cast steel, composed of Fe and comprising 0.4˜0.6 wt % of C, 0.5˜1.0 wt % of Si, 2.1˜2.9 wt % of Mn, 2.1˜2.9 wt % of Ni, 18˜22 wt % of Cr, 1.0˜2.0 wt % of Nb, 2.0˜3.0 wt % of W, 0.25˜0.35 wt % of N and other inevitable impurities, wherein a ratio of a Cr equivalent relative to a Ni equivalent (Cr equivalent/Ni equivalent) is 0.8˜0.9. | ||
| 地址 | Seoul KR | ||