METHOD FOR JOINING DISSIMILAR METAL PLATES
    1.
    发明申请

    公开(公告)号:US20190247949A1

    公开(公告)日:2019-08-15

    申请号:US16271156

    申请日:2019-02-08

    发明人: Akihiro TOYODA

    IPC分类号: B23K11/20 B23K11/11

    摘要: A method for joining two dissimilar metal plates having different volume resistivity with enhanced joint strength. The method includes overlaying a first metal plate made of first metal and a second metal plate made of second metal with higher volume resistivity and higher melting point in comparison with the first metal, bringing a pair of electrodes into contact with the surface of a portion of the second metal plate overlapping the first metal plate, supplying current between the electrodes so as to resistance-heat the second metal present in a current-flowing region to a temperature lower than the melting point of the second metal and higher than the melting point of the first metal, thereby partially melting the first metal plate with the heat so that an intermetallic compound is generated between the first and second metal plates, and thus joining the first and second metal plates via the intermetallic compound.

    NON-FORGED HAMMERMILL HAMMER
    5.
    发明申请

    公开(公告)号:US20190134641A1

    公开(公告)日:2019-05-09

    申请号:US16241426

    申请日:2019-01-07

    申请人: Roger Young

    发明人: Roger Young

    IPC分类号: B02C13/28 B23K9/167 B02C13/00

    摘要: Improved free-swinging hammermill hammer configurations are disclosed and described for comminution of materials such as grain and refuse. The hammer configurations of the present disclosure are adaptable to most hammer mill or grinders having free-swinging systems. The configurations as disclosed and claimed are non-forged and incorporate a saddle or hammer mouth. The merging of a hammer and saddle improves strength to reduce or maintain the weight of the hammer while increasing the amount of force delivered to the material to be comminuted. The improved configurations incorporate comminution edges having increased hardness for longer operational run times. The improved configurations improve installing, removing, and cleaning hammer components within the hammermill. The improved configurations may incorporate hammermill rod hole of varying shapes and sizes and saddles of varying shapes and sizes or the use of non-planar hammer bodies that have a recessed or protruding surface.

    Method for Machining Micro-Holes in Metal or Alloy Product

    公开(公告)号:US20180354068A1

    公开(公告)日:2018-12-13

    申请号:US15966082

    申请日:2018-04-30

    摘要: Provided is a method for machining micro-holes in a metal or alloy product which relates to the field of micro-hole machining. The method reduces the duration of ejection of primary plasma and the residuals produced during the ejection of the primary plasma, improves the smoothness of the hole wall of the micro-hole, and increases the depth limit of the micro-hole. Injecting energy by low-energy pulse laser in two attempts further facilitates the reduction of the diameter of the micro-hole and reduces the possibility of cracks, compared with injection same energy by single high-energy pulse laser. Moreover, a ratio between the diameter of the central ring of the ring spot formed by the focused second laser beam and the diameter of the central ring of the Gaussian spot formed by the focused first laser beam is greater than 1, which can improve the injection efficiency of laser energy.

    METHOD FOR BONDING STEEL MATERIAL AND DEVICE FOR BONDING STEEL MATERIAL

    公开(公告)号:US20180354065A1

    公开(公告)日:2018-12-13

    申请号:US15780692

    申请日:2016-11-25

    发明人: Takashi Kobayashi

    IPC分类号: B23K20/16 B23K20/02 B23K35/00

    摘要: First steel material, a carbon sheet, and second steel material are put in a state of being separated from each other, and bonding parts are heated by, for example, applying current from a power supply to the carbon sheet. Alternatively, the bonding parts may be heated by an inductive heating coil. Thereafter, heating is terminated if the bonding parts reaching greater than or equal to the eutectic point and less than the liquidus line temperature is detected in the Fe—C phase diagram. Furthermore, the carbon sheet is made to be sandwiched between the first steel material and the second steel material.