发明名称 |
Method and apparatus for double vacuum production of steel |
摘要 |
A method and apparatus for producing high quality steel having less than about 1 ppm H, 50 ppm N, 25 ppm O and 0.005 S which includes subjection to vacuum, gas purging, and alternating current heating arcs, followed by shrouded pouring into sealed ingot molds to form a VAR electrode which is subsequently remelted under a very low absolute vacuum and re-solidified.
|
申请公布号 |
US5252120(A) |
申请公布日期 |
1993.10.12 |
申请号 |
US19920966862 |
申请日期 |
1992.10.26 |
申请人 |
A. FINKL & SONS CO. |
发明人 |
FINKL, CHARLES W.;BRADA, GUY A.;UNDERYS, ALGIRDAS A. |
分类号 |
C21C5/52;C21C5/56;(IPC1-7):C21C7/00 |
主分类号 |
C21C5/52 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|