Furnace, cupola a shaft furnace for smelting iron in casting production. Melting in cupola furnaces dates back several centuries to. These furnaces became the prototype of the modern cupola furnace. Until the second half of the 18th century metal for castiron production was obtained directly from ore in blast furnaces. The cupola furnace has several unique characteristics which are responsible for its widespread use as a melting unit for cast iron. Cupola furnace is the cheapest means for converting pig iron or scrap metal into gray cast iron. Minimizing the downtime for these repairs is essential to keeping the foundry in operation. Iron melting cupola furnaces for the small foundry. Until the second half of the 18th century metal for cast iron production was obtained directly from ore in blast furnaces. You get complete plans and operating instructions for a 10 diameter cupola. The cupola furnace is a vertical shaft furnace used primarily for melting cast iron.
Smelting in cupola furnace for recarburization of direct reduction iron. The cupola furnace works on the principle where we generate heat from burning coke and when the temperature of the furnace is above the melting point of the metal then the metal is melt. The cupola is a tubular furnace which produces cast iron by melting scrap and alloys. Steven d chastain iron melting cupola furnaces for the small foundry 2004 free download as pdf file. A cupola is a vertical cylindrical furnace equipped with a tapping spout near its base. Cupola furnace for many years, the cupola was the primary method of melting used in iron foundries. The metal casting industry is one of the most energyintensive manufacturing. To the foundry using a cupola for melting, the furnace is the heart of the foundry providing molten iron to the rest of the operation. The freecarbon in the briquette is added to the fuel and the silica and. Cupola furnace is a melting device used to melt cast iron, niresist iron, and some bronzes and it is used in foundries. It melts about 200kgs per hour but i ran it mostly 40 mins at a time because of the time needed to make moulds and break up scrap so it would fit in the cupola. Pdf smelting in cupola furnace for recarburization of direct.
The charge is usually melted in a cupola or in an electric induction furnace. Chastains book iron melting cupola furnaces for the small foundry is not a rewrite of information from the past but steve has designed, built and has in use a cupola furnaces suitable for casting those obsolete iron parts you can no longer find or making proto types allin your back yard but only if you have vary good neighbors thatlike you a great deal. Furnaces can also be classified according to the molten metal. Now before you thumb your nose at me and start telling me that 10 aint much of a furnace, i must remind you that a cupola is a fast melting furnace. In a production iron foundry, the melting equipment should comply with the. Pdf herein the synthesis of ironcarbon saturated alloys foundries melting in cupola furnaces from direct. Cupola furnace article about cupola furnace by the free. The charge introduced in the cupola consists of pig iron, scrap, casting rejection, coke, and flux. Steven d chastain iron melting cupola furnaces for the small. The bottom of the cupola furnace has two hinged doors supported in the closed position by a centre prop. The show of melting cast iron in the cupola furnace performed by silesia castings during the 8th festival of high temperatures in wroclaw, poland.
Anthracite coal or carbon briquettes may also be used. The chapter also discusses cupola melting, which is the classical iron melting unit and. Cupola furnace is employed for melting scrap metal or pig iron for production of various cast irons. The cupola is a most widely used foundry furnace for melting ferrous metals and alloys. The shape of the cupola is cylindrical and the equipment is arranged in the vertical fitted with doors. Sometimes, it is also used for melting nonferrous metals and alloys. Smelting in cupola furnace for recarburization of direct reduction iron dri 3. This is a furnace familiar to most iron and steel founders.