Method for making machinable lead-free copper alloys with additive
    2.
    发明授权
    Method for making machinable lead-free copper alloys with additive 失效
    具有添加剂的可加工的无铅铜合金的方法

    公开(公告)号:US5614038A

    公开(公告)日:1997-03-25

    申请号:US493337

    申请日:1995-06-21

    IPC分类号: C22C9/04 C21D1/09

    CPC分类号: C22C9/04

    摘要: Machinable lead free brasses for potable water applications are provided wherein a combination of bismuth and selenium are substituted in the alloy for lead and the bismuth and selenium are added to the alloy in the form of an additive product comprising bismuth selenide. A method of making the brasses which meets environmental and safety regulations is also provided. The bismuth selenide is preferably made by sintering particles of bismuth and selenium in a Bi/Se weight ratio of about 1.8 or greater and fusing the sinter.

    摘要翻译: 提供了用于饮用水应用的可加工的无铅黄铜,其中在用于铅的合金中取代铋和硒的组合,并且将铋和硒以包含硒化铋的添加剂产品的形式加入到合金中。 还提供了一种制备符合环境和安全规定的黄铜的方法。 硒化铋优选通过以大约1.8或更大的Bi / Se重量比烧结铋和硒的颗粒并使烧结体熔融而制成。

    Production of spherical bismuth shot
    4.
    发明授权
    Production of spherical bismuth shot 失效
    生产球形铋丸

    公开(公告)号:US5540749A

    公开(公告)日:1996-07-30

    申请号:US303306

    申请日:1994-09-08

    摘要: A method is provided for producing bismuth and bismuth alloy shot particles by a procedure whereby molten bismuth at a temperature less than about 100.degree. C. above the melting point of the bismuth is used to form drops of molten bismuth which fall through a vessel containing a material more viscous than water with the method having a Reynolds Number less than about 100. Preferred materials are polyethylene glycols having a molecular weight of about 4500 and 8000.

    摘要翻译: 提供了一种制备铋和铋合金丸粒的方法,其中使用熔点高于铋熔点约100℃的熔融铋形成熔融铋滴, 材料比水具有更粘的方法,雷诺数小于约100.优选的材料是分子量约为4500和8000的聚乙二醇。