sketch and explain the construction and operation of a hot chamber die casting machine
Answers
Answer:
The injection mechanism of a hot chamber machine is immersed in the molten metal. The furnace is attached to the machine by a metal feed system called a gooseneck.
Hot Chamber
The die is closed and the piston rises, opening the port, allowing molten metal to fill the cylinder.
Hot Chamber
Next, the plunger seals the port, pushing the molten metal through the gooseneck and nozzle into the die cavity where it is held under pressure until it solidifies.
Hot Chamber
The die opens and the cores, if any, retract. The casting remains in only one die half – the ejector side. The plunger then returns, allowing residual molten metal to flow back through the nozzle and gooseneck.
Ejector pins push the casting out of the ejector die. As the plunger uncovers the filling hole, molten metal flows through the inlet to refill the g