论文部分内容阅读
高铅青铜是用途很广的合金材料。但由于铜和铅二者的熔点及比重相差甚大,故极易产生铅偏析。先前,人们采取加入第三元素来防止偏析,但效果不理想。美国的Cart E.Bazley和RobertTarkicher在1970和1971年分别获得了生产均质铜铅合金的专利。他们的发明要点是把一定数量的均质催化剂加入铜铅合金液中,利用高温化学反应产生的搅拌作用获得均质合金。且该合金具有多次重熔而不会产生偏析的能力。 Cart E.Bazley专利(专利号3544314)是先熔化一定数量的铜,升温到1260℃;加入所需比
High lead bronze is a very versatile alloy material. However, the melting point and the proportion of both copper and lead vary greatly, it is prone to lead segregation. In the past, people took to join the third element to prevent segregation, but the effect is not satisfactory. In the United States in 1970 and 1971 Cart E. Bazley and Robert Tarkicher respectively won the patent for the production of homogeneous copper-lead alloys. The point of their invention is that a certain amount of homogeneous catalyst is added to the copper-lead alloy liquid, and the homogeneous alloy is obtained by the stirring effect generated by the high-temperature chemical reaction. And the alloy has many remelting without the ability to produce segregation. Cart. Bazeley patent (Patent No. 3544314) is to melt a certain amount of copper, warmed to 1260 ℃; add the required ratio