Process for the manufacture of steels with a high chromium content
    2.
    发明授权
    Process for the manufacture of steels with a high chromium content 失效
    具有高铬含量的钢的制造工艺

    公开(公告)号:US4001009A

    公开(公告)日:1977-01-04

    申请号:US538204

    申请日:1975-01-02

    IPC分类号: C21C7/068 C21C5/52

    CPC分类号: C21C7/0685

    摘要: Post melting unit process for the decarbonization of stainless chromium steel containing at least about 10% chromium which comprises subjecting a melt of chromium containing steel at about 1580.degree.-1700.degree. C to a vacuum in the presence of sufficient oxygen to lower a starting carbon content which is above the ELC range into the ELC range, and simultaneously with subjection to vacuum, agitating the melt by gas purging, the heat added to the steel by combustion of carbon at least partially compensating for the heat loss due to post melting unit treatment.