Melting Furnaces

Melting Furnaces Prepared by: Mohammed Abd Elghany 2nd Industrial Engineering Department Prepared to: Dr/Masoud Ibrahim 10/28/2008

Eng/ Mohammed Abd Elghany

“ Content ” 1. The major types of Melting Furnaces. 1.1. Cupola furnace. 1.2. Electric Arc furnace. 1.3. Induction furnace. 1.3. a. Coreless induction furnace. 1.3. b. Channel induction furnace. 2. References.

10/28/2008

Eng/ Mohammed Abd Elghany

► The major types of Melting Furnaces :

1- Cupola furnace. 2- Electric Arc furnace. 3- Induction furnace.

10/28/2008

Eng/ Mohammed Abd Elghany

1 ) Cupola furnace :

10/28/2008

Eng/ Mohammed Abd Elghany

1 ) Cupola furnace : - It is the most popular melting furnace. - It is shaft-like vertical furnace consisting of a steel shell lined with refractory bricks, equipped with tuyeres (nozzles for blowing air). - Iron, coke and limestone flux are charged by means of an opening locating in the upper half of the steel shell. - The liquid iron is periodically (or continuously) removed through a spout.

10/28/2008

Eng/ Mohammed Abd Elghany

2 ) Electric Arc furnace :

10/28/2008

Eng/ Mohammed Abd Elghany

2 ) Electric Arc furnace : - It is a steel making furnace, - in which steel scrap is heated and melted by heat of electric arcs striking between the furnace electrodes and the metal bath. - The furnace consists of a spherical hearth (bottom), cylindrical shell and a swinging water-cooled dome-shaped roof. - The main advantage of the Electric Arc Furnaces is it’s Capacity which may reach 400 t.

10/28/2008

Eng/ Mohammed Abd Elghany

3 ) Induction furnace : - Induction furnaces are widely used for melting nonferrous and ferrous alloys. - There are two types of induction furnaces: a ) Coreless induction furnace . b ) Channel induction furnace .

10/28/2008

Eng/ Mohammed Abd Elghany

3 ) Induction furnace :

10/28/2008

Eng/ Mohammed Abd Elghany

3 ) Induction furnace : a) Coreless induction furnace:

- It is consists of: a water cooled helical coil made of a copper tube, a crucible installed within the coil and supporting shell equipped with trunnions on which the furnace may tilt. b) Channel induction furnace:

- It is consists of a steel shell lined with refractory materials and an inductor attached to the shell. There is a channel connecting the main body with the inductor.

10/28/2008

Eng/ Mohammed Abd Elghany

References :

http :// www . substech . com / dokuwiki / doku . php?id = electric_arc_fur

http :// www . substech . com / dokuwiki / doku . php?id = melting_furnaces

THE END Thank you “ Good Luck ” 10/28/2008

Eng/ Mohammed Abd Elghany