Method for minimizing surface roughening of tungsten-containing rolls
and other metallic articles
    1.
    发明授权
    Method for minimizing surface roughening of tungsten-containing rolls and other metallic articles 失效
    使含钨辊和其他金属制品的表面粗糙化最小化的方法

    公开(公告)号:US5409551A

    公开(公告)日:1995-04-25

    申请号:US971215

    申请日:1992-11-04

    摘要: A method for improving the resistance to surface roughening of tungsten-containing metallic articles such as cutting tools and hot mill rolls made of a cemented carbide or high-speed steel and extending the lifetime thereof. The method comprises treating a metallic article with an aqueous alkaline solution containing calcium ions and optionally tungstate ions having a pH greater than 8 so as to form a coating of calcium tungstate on the surface of the metallic article. In hot rolling with tungsten-containing rolls, the aqueous solution can be used as at least part of a cooling water to cool the rolls, thereby extending the period before roll replacement becomes necessary due to surface roughening and decreasing the frequency of roll dressing required during hot rolling.

    摘要翻译: 一种提高由硬质合金或高速钢制成的切削工具和热轧辊等含钨金属制品的耐表面粗糙化的方法,延长其寿命。 该方法包括用含有钙离子的碱性水溶液和pH大于8的任选的钨酸根离子处理金属制品,以在金属制品的表面上形成钨酸钙的涂层。 在含钨辊的热轧中,水溶液可以用作冷却水的至少一部分以冷却辊,从而延长由于表面粗糙而需要辊更换之前的时间段,并且减少在 热轧。

    Carbon fiber reinforced concrete
    2.
    发明授权
    Carbon fiber reinforced concrete 失效
    碳纤维混凝土

    公开(公告)号:US4627998A

    公开(公告)日:1986-12-09

    申请号:US795697

    申请日:1985-10-16

    摘要: A process for manufacturing a precast composite structure of a matrix of cured carbon fiber reinforced concrete and at least one ferrous metallic member at least partly buried in said matrix, by forming an insulating layer of an electric resistance of at least about 100 ohms at least on that surface of the ferrous metallic member, which will otherwise be brought in contact with a concrete mix, placing the metallic member in position in a mold, pouring into the mold a concrete mix containing 0.2 to 10% by volume of carbon fiber so that said metallic member may be at least partly buried in said concrete mix, partly curing the structure until it becomes self-supporting, de-molding the partly cured structure, and fully curing the structure in an autoclave at a temperature between 100.degree. C. and 215.degree. C.

    摘要翻译: PCT No.PCT / JP85 / 00103 Sec。 371日期1985年10月16日第 102(e)日期1985年10月16日PCT提交1985年3月1日PCT公布。 出版物WO85 / 03930 日期:1985年9月12日。一种制造固化碳纤维增强混凝土基体的预制复合结构的方法和至少部分地埋在所述基质中的至少一种含铁金属构件,通过形成电阻为 至少约100欧姆至少在黑色金属构件的表面上,否则其将与混凝土混合物接触,将金属构件放置在模具中的适当位置,向模具中注入混合物,混合物混合物含有0.2至10% 碳纤维的体积,使得所述金属构件可以至少部分地埋在所述混凝土混合物中,部分地固化结构直到其变得自支撑,将部分固化的结构去模制,并且在高压釜中在温度下完全固化该结构 在100℃和215℃之间