Mold and method of manufacturing the same

Abstract

A mold welded with a dissimilar metal member, characterized in that said mold is manufactured by a method comprising a first step for pressingly bringing the dissimilar metal member into contact with a mold formed of copper or a copper alloy in a stationary state while rotating the dissimilar metal member at a high speed, a second step for stopping the dissimilar metal member, and a third step for providing a forced pressure larger than the pressure in the first step to the mold. By utilizing the present mold, the problems of efficient cooling and attachment of back frame are solved, more concretely, a variety of problems such as cutting processing loss of copper or a copper alloy plate, a large amount of processing time, heat distortion and heat deterioration of a copper plate and the like can be solved, and the reliability concerning with the welding position precision and the welding strength of stud bolt can be improved. A mold welded with a dissimilar metal member characterized in that the mold is manufactured by a method comprising a first step.

1 . A mold welded with a dissimilar metal member, characterized in that the mold is manufactured by a method comprising a first step of pressingly bringing the dissimilar metal member into contact with a mold formed of copper or a copper alloy in a stationary state while rotating the dissimilar metal member at a high speed, a second step of stopping the dissimilar metal member, and a third step of providing a forced pressure larger than the pressure in the first step to the mold.  
   
   
       2 . The mold according to  claim 1 , characterized in that the mold is a steel continuous casting mold.  
   
   
       3 . The mold according to  claim 1 , characterized in that the dissimilar metal member is a back frame mounting member.  
   
   
       4 . The mold according to  claim 3 , characterized in that the back frame mounting member is equipped with a screw structure for interiorly mounting the back frame.  
   
   
       5 . The mold according to  claim 2 , characterized in that the steel continuous casting mold is a steel continuous casting mold for electromagnetic stirring.  
   
   
       6 . The mold according to  claim 1 , characterized in that main rotation speed of the dissimilar metal member of the first step is 60 m/min or more, the pressure is 40 MPa or more, and the forced pressure of the third step is 60 MPa or more.  
   
   
       7 . The mold according to  claim 1 , characterized in that the dissimilar metal member comprises a stainless steel, titanium, a titanium alloy or a nickel alloy.  
   
   
       8 . The mold according to  claim 1 , characterized in that when a mold and a dissimilar metal member are brought into contact with each other, a nickel plating layer or a nickel alloy plating layer, or a nickel foil or a nickel alloy foil is intervened between the mold surface and the dissimilar metal member surface.  
   
   
       9 . The mold according to  claim 8 , characterized in that the thickness of a plating layer or a foil is in the range from 1 to 50 μm.  
   
   
       10 . A method of manufacturing a mold welded with a dissimilar metal member characterized in that the method comprises a first step of pressingly bringing the dissimilar metal member into contact with a mold formed of copper or a copper alloy in a stationary state while rotating the dissimilar metal member at a high speed, a second step of stopping the dissimilar metal member, and a third step of providing a forced pressure larger than the pressure in the first step to the mold.  
   
   
       11 . A method of manufacturing a mold welded with a dissimilar metal member, characterized in that while performing pressure welding of the mold and the dissimilar metal member, said mold and mold metal member are subjected to solid state welding by friction heat generated by the difference of both main spindle rotation speeds.  
   
   
       12 . The method of manufacturing according to  claim 11 , characterized in that the surface area of welding surface including welding site of a mold which consists of copper or a copper alloy is 100-fold or more of the welded area of a dissimilar metal member.  
   
   
       13 . A steel continuous casting mold in which a back frame mounting member is welded by friction welding.  
   
   
       14 . The mold according to  claim 2 , characterized in that the dissimilar metal member is a back frame mounting member.  
   
   
       15 . The mold according to  claim 14 , characterized in that the back frame mounting member is equipped with a screw structure for interiorly mounting the back frame.