Method for the preparation of a hardening salt in piece form and product
    2.
    发明授权
    Method for the preparation of a hardening salt in piece form and product 失效
    用于制备片状和产品的硬化盐的方法

    公开(公告)号:US5453109A

    公开(公告)日:1995-09-26

    申请号:US274428

    申请日:1994-07-13

    CPC分类号: C01C3/14 C21D1/46

    摘要: A method for the preparation of a salt mixture useful for hardening steel parts, including of potassium cyanate, potassium carbonate and sodium carbonate, wherein 2.2 to 2.3 moles of urea is first reacted with 1 mole of potassium carbonate to form potassium cyanate. The escaping ammonia is converted with formaldehyde into hexamethylenetetramine. The reaction product, which is potassium cyanate and potassium carbonate, is ground, mixed with powdered sodium carbonate and pressed at between 80.degree. and 230.degree. C. into shaped pieces.

    摘要翻译: 制备用于硬化钢部件(包括氰酸钾,碳酸钾和碳酸钠)的盐混合物的方法,其中2.2至2.3摩尔的尿素首先与1摩尔碳酸钾反应以形成氰酸钾。 逸出的氨被甲醛转化成六亚甲基四胺。 将氰酸钾和碳酸钾的反应产物研磨,与碳酸钠粉末混合并在80℃和230℃之间压制成成型片。

    Filter unit and apparatus for desludging salt baths
    3.
    发明授权
    Filter unit and apparatus for desludging salt baths 失效
    用于排除盐浴的过滤单元和设备

    公开(公告)号:US5527018A

    公开(公告)日:1996-06-18

    申请号:US342581

    申请日:1994-11-21

    摘要: In a filter unit (25) and apparatus for desludging salt baths (1), which is flooded at least partially by the salt bath and is in working association with the upper end of a riser tube (23), the bath fluid to be desludged being driven, by means of a compressed air stream, for example, through the riser tube (23) toward the filter unit (9, 25), the filter cloth packet is made of woven wire of a nonferrous metal, preferably an alloy based on aluminum, nickel or titanium, and is surrounded by a filter frame (14), the frame (14) being shaped into a shallow, pyramidal frustum-shaped funnel (18) pointing toward the bottom of the vat, its apical bottom end being provided with a closable opening (19).

    摘要翻译: 在过滤器单元(25)和用于排除盐浴(1)的装置中,所述设备至少部分地被盐浴淹没并且与提升管(23)的上端处于联动状态,要被排除的浴液 通过压缩空气流驱动,例如通过提升管(23)朝向过滤器单元(9,25)驱动,滤布包由有色金属的织造线制成,优选地基于 铝,镍或钛,并且被过滤器框架(14)围绕,框架(14)成形为指向大桶底部的浅锥锥形锥体(18),其顶端底端设置 具有可关闭的开口(19)。