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In the hot chamber die casting process, which of the following parts is used for the pumping of liquid metal into the cavity?

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In the hot chamber die casting process, which of the following parts is used for the pumping of liquid metal into the cavity?

(a) Accumulator

(b) Slug

(c) Guide pin

(d) Gooseneck

I had been asked this question at a job interview.

I'd like to ask this question from Die Casting topic in section Special Casting Techniques of Casting-Forming-Welding I

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The correct option is (d) Gooseneck

Easy explanation: A gooseneck is used for the pumping of liquid metal into the die cavity. It is made of ductile iron or of cast steel. The gooseneck is submerged in the holding furnace containing the molten metal. Then a plunger which is hydraulically operated moves up in the gooseneck to open the entry port for the entry of liquid metal into the gooseneck.

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