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Casting Practice Test: Metal Furnace and Practice
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Metal Furnace and Practice topics include: Remelting furnace selection, cupola and its efficiency, coke bed and cupola charge calculations, crucible and electric furnaces, reverberatory furnace, open heart surface, crucibles, direct arc and rocking furnace, converter, induction furnace with high and low frequency. Metal furnaces are heating chambers that melt metal. There are five basic types of furnaces: Crucible, Reverberatory, Stack melter, Dosing, Rotary.  Here are some types of metal furnaces: Electric arc furnace (EAF): A cylindrical vessel made of heavy steel plates. It uses an... Show more
Casting Practice Test: Metal Furnace and Practice
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25 Questions

1. The combustion section of the cupola furnace is also called as oxidizing zone.
2. The sulphur content in acid-cupola operation does not depend on which of the following factors?
3. The crucible process is used for production of which material?
4. For how much time is the cupola fired before pouring?
5. Crucible furnace is a very expensive method of melting the metal for small scale production.
6. The rocking furnace operation is expensive.
7. Which of the following is the primary benefit of using the electric furnaces for melting the metals?
8. The electrodes used in the rocking furnace are typically made up of which material?
9. Which coal is used as a fuel in an air furnace?
10. Low cost scrap metal can be used for rocking furnace.
11. What should the height of a cupola furnace?
12. Resistance furnace is a furnace that uses fuel gases like propane, acetylene or natural gas.
13. What should be the highest sulphur pick-up in the acid-cupola reaction?
14. Given: cupola diameter = 45cm, mass of bed charge = 325kg, height of groove = 6.5m. Find coke density.
15. What is the purpose of auxiliary tuyeres?
16. The impurities are burnt from which material in an open hearth furnace to produce steel?
17. Crucibles do not possess refractoriness.
18. Only acid lined furnace depend on type of steel to be produced?
19. The weight of the bed charge does not depend on which of the following factor?
20. What is the maximum capacity of an air furnace?
21. Malleable iron can be produced using a reverberatory furnace.
22. Given: cupola diameter = 53cm, mass of bed charge = 465kg, height of groove = 7.2m. Find coke density.
23. Silicon carbide can be used as a liner for the crucible furnaces.
24. How much steel scrap is present in refined irons?
25. In electric arc furnaces, the handling and maintaining of electrodes are done by manual means.