Method for underwater frictional welding of metallic material
    1.
    发明授权
    Method for underwater frictional welding of metallic material 失效
    金属材料水下摩擦焊接方法

    公开(公告)号:US3897623A

    公开(公告)日:1975-08-05

    申请号:US50600274

    申请日:1974-09-16

    CPC classification number: B23K20/12

    Abstract: This invention provides a method for underwater frictional welding of metallic articles, which method comprises preparatorily wrapping a heat insulating material such as tape around the periphery at the terminal face of each of the metallic articles subjected to welding, abutting under pressure the terminal faces of the metallic articles against each other and welding the confronting ends of the metallic articles by utilizing the frictional heat produced in the terminal faces by the relative rotary motion and the pressure exerted in the axial direction.

    Abstract translation: 本发明提供了一种金属制品的水下摩擦焊接方法,该方法包括在每一个经受焊接的金属制品的端面周围将围绕周边的隔热材料预先包裹在每个金属制品的端面上, 金属制品彼此相对并且通过利用通过相对旋转运动和沿轴向施加的压力利用在端面中产生的摩擦热来焊接金属制品的相对端。

    Device for automatic determination of suspended solids content in water
    2.
    发明授权
    Device for automatic determination of suspended solids content in water 失效
    用于自动测定水中悬浮固体含量的装置

    公开(公告)号:US3893333A

    公开(公告)日:1975-07-08

    申请号:US41579973

    申请日:1973-11-14

    CPC classification number: G01N33/18 G01N5/04

    Abstract: A device for automatic determination of suspended solids content in water comprises an automatic sample liquid collection unit, an automatic specimen preparation unit, an automatic filter paper feeding unit, an automatic filter paper transfer unit, an automatic suspended solids filtration unit, an automatic drying unit, an automatic weighing and display unit and an automatic process control unit. A sample liquid automatically collected is prepared automatically to produce a test specimen. The specimen is filtered through a sheet of filter paper supplied by the automatic filter paper feeding unit. The filter paper on which the suspended solids of the specimen are deposited in consequence of the filtration is dried by the automatic drying unit and thereafter weighed. The weight thus taken is automatically converted into a corresponding electrical quantity and forwarded to an arithmetic circuit, in which the suspended solids content of the given liquid is calculated and recorded.

    Abstract translation: 用于自动测定水中悬浮固体含量的装置包括自动样品液体收集单元,自动样品制备单元,自动滤纸进给单元,自动滤纸传送单元,自动悬浮固体过滤单元,自动干燥单元 ,自动称重显示单元和自动过程控制单元。 自动收集的样品液体被自动制备以产生试样。 通过由自动进纸单元供应的一张滤纸过滤样品。 将过滤后的样品的悬浮固体沉积在其上的滤纸通过自动干燥单元干燥,然后称重。 这样取得的重量被自动转换成相应的电量,并被转送到运算电路,其中计算和记录给定液体的悬浮固体含量。

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