Runner apparatus for preventing thermal loss of molten materials

A runner apparatus for preventing thermal loss of molten materials, wherein the runner apparatus guides a flow of the molten materials from a furnace to a casting mold, the runner apparatus comprising:

• an insulation unit providing a passage for the flow of the molten materials discharged from the furnace and lowering a thermal loss of the molten materials;
• a dam unit confining the insulation unit in a predetermined space thus preventing a leak and adjusting the flow of the molten materials;
• an outside unit formed of a stack of a plurality of blocks and forming an exterior wall covering the insulation unit;
• and
• a spread unit, comprising furrows such that the molten materials are split in a lateral direction of the flow, and disposed under the insulation unit, spreading the molten materials dropping from the dam unit and transferring the molten materials to the casting mold,
• wherein:
• the insulation unit comprises:
• a plate, a proximal end of which is connected to the furnace, forming a predetermined space where the molten materials discharged from the furnace flow, and
• a particle portion, made of an aggregate of a plurality of silicate particles, filling the predetermined space of the plate,
• the dam unit comprises a blocking portion, disposed at a distal end of the plate, forming a partition wall which confines the particle portion inside the plate,
• the dam unit comprises a fence, engaged with the blocking portion, configured to change a height of the partition wall as desired, and
• the blocking portion has on an outer surface of the blocking portion, a plurality of protrusions, which are matched with a plurality of grooves of a corresponding shape and size formed on the fence.