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In hot chamber die casting processes, downward motion of plunger in the gooseneck leads to injection of molten metal into the cavity with high pressure.

In hot chamber die casting processes, downward motion of plunger in the gooseneck leads to injection of molten metal into the cavity with high pressure. Correct Answer True

In the gooseneck, the highest position of the plunger facilitates the filling of the gooseneck by the liquid metal. Then the plunger starts moving down to force the metal in the gooseneck to be injected into the die cavity. The metal is then held at the same temperature till it is solidified.

Related Questions

In hot chamber die casting, the plunger is also used for taking back of unused molten metal to the gooseneck after the fulfilling of the cavity.
Consider the following statements. (1) Hot chamber machine is used for casting zinc, tin and other low melting alloys (2) Cold chamber machine is used for die casting of ferrous alloys (3) Rapid cooling rate in die casting produces high strength and quality in many alloys Which of these statements are correct? 
In vacuum die casting, the molten metal enters into the cavity slowly as compared to the die casting.
In vacuum die casting, the molten metal does not experience any back pressure while injecting it into the die cavity.
In cold chamber die casting, rapid cooling of the castings is done as compared to the hot chamber die casting.
The chances of defects in the castings by cold chamber die casting are more than the castings produced by hot chamber die casting.
The riser is a reservoir of molten metal provided in the casting so that hot metal can flow back into the mould cavity when there is a reduction in the volume of metal due to?
A stainless steel chamber contains Ar gas at a temperature T and pressure P. The total number of Ar atoms in the chamber is n. Now Ar gas in the chamber is replaced by CO2 gas and the total number of CO2 molecules in the chamber is n/2 at the same temperature T. The pressure in the chamber now is P’. Which one of the following relations holds true? (Both the gases behave as ideal gases)
In the hot chamber die casting process, which of the following parts is used for the pumping of liquid metal into the cavity?
Using of the ladle in the cold chamber die casting has no affects on contact time between the molten metal and the shot chamber.