Ch.8 special casting methods

Question 1

Permanent Mold Casting

Answer 1

where molten metal is poured into a permanent metal mold.

Question 2

Diecasting

Answer 2

Where molten metal is injected into a mold under pressure

Question 3

Centrifugal casting

Answer 3

molten metal is poured into a mold that is rapidly rotated about a central axis. the centrifugal force throws the molten metal against the wall and fills up the shape of the casting.

Question 4

Investment casting

Answer 4

1. Multiple patterns are on a cluster
2. It is dipped or investments into A binder resulting in a thin ceramic shell
3. It is then dried
4. Finally heated up to remove the pattern

Question 5

what is hot chamber casting

Answer 5

metal is held at a high temperature in the holding furnace, keeping it molten between cycles.

Question 6

what is cold chamber diecasting

Answer 6

metal is injected when needed and solidifies in the unheated chamber after each cycle. shot chamber

Question 7

what is lost foam casting

Answer 7

a technique that utilizes a mold made from a plastic foam and a ceramic refractory covering it. the sand holds the mold in place while metal is poured into it. the foam then evaporates into a gas leaving the desired metal shape.