Explosion-proof gas detector die-casting die and die-casting method thereof

The invention discloses an explosion-proof gas detector die-casting die and a die-casting method thereof. The explosion-proof gas detector die-casting die comprises a casting pipe used for inputting an alloy solution, an upper die, a lower die and a cinder ladle overflow discharging mechanism used for containing cold materials and bubbles. The bottom face of the upper die can be attached to the top face of the lower die to be closed, the upper die is provided with a cavity with a downward opening, the lower die is provided with a core arranged on the top face of the lower die in a protruding mode, the cavity and the core can be closed to form a die cavity, and the cinder ladle overflow discharging mechanism is communicated with the die cavity. The casting pipe is located on the outer side of the mold cavity, a feeding flow channel is communicated between the casting pipe and the mold cavity, the cinder ladle overflow discharging assembly comprises a first overflow discharging piece used for containing backflo