METHOD FOR PRODUCING SEAMLESS STEEL TUBE/PIPE
    120.
    发明申请
    METHOD FOR PRODUCING SEAMLESS STEEL TUBE/PIPE 审中-公开
    生产无缝钢管/管的方法

    公开(公告)号:US20130269407A1

    公开(公告)日:2013-10-17

    申请号:US13996128

    申请日:2011-12-20

    Abstract: When performing piercing-rolling by use of a plug with a protection film on its surface, applying a lubricant made of an aqueous solution containing a total of 5 to 30% mass % of one or more of boron oxide, boric acid, and amine borate to the protection film on the plug surface, and using this plug for piercing-rolling makes it possible to realize the increase of the life of plug for piecing-rolling without reducing the efficiency of piercing-rolling. The plug can be cooled after the piecing-rolling, the application of the above described lubricant is performed when the surface temperature of the front edge of plug decreases to 100° C. or less, and the plug is reused for the piercing-rolling. In this occasion, the protection film on the plug . surface can be formed by arc spraying iron wire material onto the surface of the base metal of plug, and comprises oxides and Fe.

    Abstract translation: 当在其表面上使用具有保护膜的塞子进行穿孔轧制时,涂布由含有总计5至30%质量%的硼氧化物,硼酸和胺硼酸盐中的一种或多种的水溶液制成的润滑剂 在插头表面上的保护膜上,并且使用该插头进行穿孔轧制,可以在不降低穿孔效率的情况下实现接头插头的寿命的增加。 塞子在接头轧制后可以冷却,当塞子前端的表面温度降低到100℃以下时,执行上述润滑剂的应用,并且将塞子重新用于穿孔轧制。 在这种情况下,保护膜上的插头。 表面可以通过电弧喷涂铁丝材料形成在塞子的母金属表面上,并且包括氧化物和Fe。

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