Method for improving corrosion resistance of bright annealed stainless
steel
    1.
    发明授权
    Method for improving corrosion resistance of bright annealed stainless steel 失效
    改善光亮退火不锈钢耐蚀性的方法

    公开(公告)号:US4612095A

    公开(公告)日:1986-09-16

    申请号:US722490

    申请日:1985-04-12

    IPC分类号: C25D11/34 C25F3/02 C25F1/00

    CPC分类号: C25F3/02

    摘要: A method for improving corrosion resistance of bright annealed stainless steel is provided, in which the bright annealed stainless steel is subjected to alternating electrolysis in an aqueous nitric acid solution having a nitric acid concentration of 7 weight % or less in such a way that the stainless steel treated become an anode at least twice with the anode in the final run of electrolysis.

    摘要翻译: 提供了一种提高光亮退火不锈钢的耐腐蚀性的方法,其中,在硝酸浓度为7重量%以下的硝酸水溶液中对亮光退火的不锈钢进行交替电解,使得不锈钢 在最后的电解过程中,钢被处理成阳极至少两次。

    Method of improving functions of surface of alloy steel by means of
irradiation of laser beam, and alloy steel and structure made by the
method
    2.
    发明授权
    Method of improving functions of surface of alloy steel by means of irradiation of laser beam, and alloy steel and structure made by the method 失效
    通过激光束照射改善合金钢表面功能的方法,合金钢及其制造方法

    公开(公告)号:US4692191A

    公开(公告)日:1987-09-08

    申请号:US869783

    申请日:1986-06-02

    CPC分类号: B44C1/005 B44C1/02 C23C22/73

    摘要: A method of improving the functions of the surface of alloy steel by means of the irradiation of a laser beam is disclosed. In this method, the alloy steel is kept in contact with the aqueous solution of oxidizing acid or salt thereof and the irradiation of a laser beam is applied on the surface of the alloy steel through the aqueous solution, thereby concentrating an alloy component on the surface of the alloy steel. The aqueous solution contains at least one selected from the group consisting of nitric acid or nitrate, chromic acid or chromate, or permanganic acid or permanganate. In addition, the irradiation of the laser beam is applied so as to depict a given pattern on the surface, and a computer controls the shape and the size of the beam, the position of the alloy steel, and the like. The present method enables the improvement of a surface function of the alloy steel by providing various kinds of color-patterns.

    摘要翻译: 公开了一种通过激光束照射改善合金钢表面功能的方法。 在该方法中,合金钢与氧化性酸或其盐的水溶液保持接触,并且通过水溶液将合金钢的表面照射激光束,从而将合金成分浓缩在表面上 的合金钢。 水溶液含有选自硝酸或硝酸盐,铬酸或铬酸盐或高锰酸或高锰酸盐中的至少一种。 此外,施加激光束的照射以在表面上描绘给定的图案,并且计算机控制光束的形状和尺寸,合金钢的位置等。 本方法能够通过提供各种颜色图案来提高合金钢的表面功能。