Fluxes for lead-free galvanizing
    1.
    发明授权
    Fluxes for lead-free galvanizing 失效
    无铅镀锌助焊剂

    公开(公告)号:US5437738A

    公开(公告)日:1995-08-01

    申请号:US264133

    申请日:1994-06-21

    CPC分类号: C23C2/02 C23C2/30 B23K35/3603

    摘要: The thermal resistance of a zinc chloride/ammonium chloride galvanizing preflux is improved by incorporating therein boric acid, other alkali metal chlorides and an aliphatic amino derivative. An improved zinc chloride/ammonium chloride galvanizing, top-flux includes a deoxidizer such as graphite or charcoal, other alkali metal chlorides and a foaming agent. Both compositions, the preflux and the top-flux, can be used to advantage in galvanizing steel with low lead or no lead zinc.

    摘要翻译: 通过掺入硼酸,其它碱金属氯化物和脂肪族氨基衍生物,可以提高氯化锌/氯化铵镀锌前驱体的耐热性。 改进的氯化锌/氯化铵镀锌,顶部助熔剂包括脱氧剂如石墨或木炭,其它碱金属氯化物和发泡剂。 两种组合物,前流量和顶部助焊剂都可以用于镀锌钢,低铅或不含铅锌。