Test 3 info

Question 1

how does the cleaning room identify a casting when its received from shake out

Answer 1

blue tag and mold number

Question 2

Brass shop

Answer 2

-lip pour
-non ferrous
-teapot

Question 3

steel shop

Answer 3

-pour bottom
-ferrous

Question 4

steps in shakeout process

Answer 4

-flaskless molds (drop it)
-flasked molds (hammer)
-large and pit molds (backhoe)

Question 5

where are the cores taken?

Answer 5

they melt away

Question 6

what surrounds the furnace?

Answer 6

-coils

Question 7

magnetic field of furnace

Answer 7

-causes molten bath to move and inherently stirs itself, creating a more homogenous mix

Question 8

what type of pour uses scrap metal?

Answer 8

all

Question 9

“volcanos”

Answer 9

-add aluminum
-they form oxides and remove oxygen

Question 10

purpose of perlite and hot top

Answer 10

perlite: insulator
-added to hold in the heat and seal the molten metal from the atmosphere

Question 11

what is used to take the temp of metal?

Answer 11

pyrometer lance that has thermocouple tip

Question 12

advantage to using induction furnace

Answer 12

-starts with cold charge
-stirs on its own

Question 13

what is slag?

Answer 13

non metalic impurities

Question 14

why/when are heat #s written on ferrous/nonferrous samples?

Answer 14

-when we make test buttons
- to have future samples

Question 15

benefits of lift coil furnace

Answer 15

-interchangeable crucibles
-fast metal & pour times
-good for small jobs

Question 16

lift coil furnace steps

Answer 16

1. before use check for cracks
   2.apply wash
   3.place crucible on pedestal
   4.use lift coil control to lift coil ring
   5.manually swing the coil ring over the crucible
   6.furnace coil is lowered around crucible