Low pressure casting machine

A low pressure casting machine comprising:

• a crucible for holding a molten metal;
• a crucible chamber for storing the crucible, the crucible chamber including a lid and a chamber body connectable to each other to form an airtight engagement with the crucible stored therein;
• a supply opening formed in the lid for supplying the molten metal into the crucible, the supply opening capable of being airtightly opened and closed;
• a pipe-shaped stoke extending through the lid and rising from a bottom portion of the crucible;
• a joint disposed on a top end portion of the stoke and connectable to a metal mold, the joint includes a joint flange that defines a lower surface of the joint and a neck disposed below the joint flange, and the lid includes a hole having a clearance extending in a radial direction with respect to the neck and a lid flange to be slidable with the joint flange in the radial direction;
• a pressure pipe and an exhaust pipe for applying pressure to the crucible chamber and for exhausting air from the crucible, respectively;
• and
• an induction heating device for heating the crucible.

A low pressure casting machine comprising:

• a crucible for holding a molten metal;
• a crucible chamber for storing the crucible, the crucible chamber including a lid and a chamber body connectable to each other to form an airtight engagement with the crucible stored therein;
• a supply opening formed in the lid for supplying the molten metal into the crucible, the supply opening capable of being airtightly opened and closed;
• a pipe-shaped stoke extending through the lid and rising from a bottom portion of the crucible;
• a joint disposed on a top end portion of the stoke and connectable to a metal mold;
• a pressure pipe and an exhaust pipe for applying pressure to the crucible chamber and for exhausting air from the crucible, respectively;
• a projected portion located on a lower surface of the lid proximate an inside diameter area of the crucible where the stoke does not exist, the projected portion extending to a location adjacent to a highest elevation of the molten metal within the crucible;
• and
• an induction heating device for heating the crucible.