Found the Better Foundry Industries

By: Andrew Beene

A foundry is a factory that produces metal castings. Metals are cast into shapes by melting them into a liquid, pouring the metal in a mold, and removing the mold material or casting after the metal has solidified as it cools. The most common metals processed are aluminum and cast iron. However, other metals, such as bronze, steel, magnesium, copper, tin, and zinc, are also used to produce castings in foundries.

An induction melting furnaces is an electrical furnace in which the heat is applied by induction heating of metal. The advantage of the used induction furnace or used induction furnaces is a clean, energy-efficient and well controllable melting process compared to most other means of metal melting. Most metal foundries use this type of furnace and now also more iron foundries are replacing cupolas with induction furnaces to melt cast iron, as the former emit lots of dust and other pollutants.

A semiconductor in Mexico is a substance, usually a solid chemical element or compound, which can conduct electricity under some conditions but not others, making it a good medium for the control of electrical current. Its conductance varies depending on the current or voltage applied to a control electrode, or on the intensity of irradiation by infrared (IR), visible light, ultraviolet (UV), or X rays. The specific properties of a semiconductor depend on the impurities, or dopants, added to it. An N-type semiconductor carries current mainly in the form of negatively-charged electron. Unlike the capacitors in Toronto is a passive electronic component that stores energy in the form of an electrostatic field. In its simplest form, a capacitor consists of two conducting plates separated by an insulating material called the dielectric. The capacitance is directly proportional to the surface areas of the plates, and is inversely proportional to the separation between the plates. Capacitance also depends on the dielectric constant of the substance separating the plates.

The advantages of channel-type induction furnaces lie in their very good efficiency and almost unlimited design freedom as regards the geometry of the furnace vessel. The use of a filling and pouring siphons reduces the slag volume, ensures high metal purity and minimizes gas pick-up. A channel furnace is the ideal melt storage and collecting unit for cupola melting operations of the grey iron foundry industry. The arrangement of its tilting axis in the filling gate and pouring spout plane allows the furnace to be charged and discharged continuously without any problem. In melting copper based alloys, a channel furnace uses nearly - 100 kwh/t less energy than its coreless counterpart - an invaluable advantage. Since the furnace vessel can be designed into virtually any shape, these units can be employed for special pouring tasks.

The increasing trend in IDM outsourcing and the further development of fabless semiconductor companies are the two key drivers for the growth of the foundry industry, which is expected to significantly outpace the growth of the overall semiconductor industry. According to IC Insights, the size of the foundry industry in terms of worldwide sales reached US$14.0 billion in 2003, representing a 20.5% compound annual growth rate from US$5.5 billion in 1998, and is projected to reach US$39.5 billion by 2008, representing a compound annual growth rate of 21.8% since 1998. In contrast, the overall semiconductor industry is expected to grow at a compound annual rate of 9.5% over the same time period.

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