___Here I introduce a progressive casting Die technology, which get quality squirrel cage Induction motor rotors
utilizing conventional Horizontal Die-cast machine or advanced UBE HVSC machine.
Aluminum Die-cast Rotors have been manufactured sice the 1940's later in JAPAN,also since in the 1930's in USA.
The design layout development project was started since 1992 at Misima shizuoka, Japan.client was some NC-Motor Co.
Conventional die layout has many problems like follows(Fig.1)
Insert mandrel stack(punched metal sheets) horizontally, over 40 years.
(1) Rotor Unbalanced caused air and molten metal flow dynamics.
(2) Aluminum or Copper Bar Unstable, they are thin and often disconnection.
(3) Poor air exhaust , without use of chillventblock or vacuum valve. In the bar with blow-holes.
Solid Casting Lab. developed NEW DIE layout propose here the solution like this.(Fig.2)
Insert mandrel stack vertically, utilizing conventional Horizontal Die-cast machine.
(1) Dynanic balance improved 90% from conventional layout. (tested in 1993 )
(2) Casting Solid bar, not thin and very small void and squeeze it from top.
(3) Available chillventblock or vacuum valve, as you need.
fig.1(Conventional die-Casting Method)
fig.2(This is the new and innovative die-design, nobody think out since 1947 to 1992)
Fig.3 Casting Rotor with parting line as you see.
Now the Die technology makes it possible to aluminum rotors with a 60" diameter also a 100"length core.
