Features To Expect From A High Temperature Furnace

Processes such as sintering, annealing, melting

, hot pressing, and so on need to be carried out in high temperature environments. A high temperature furnace is considered to be most suited for such processes. Since temperatures in such a furnace can go up to as much as 3000 degrees centigrade, each and every component that is exposed to heat needs to conform to several parameters.

Since most industries need high temperature furnaces for sintering, this particular furnace is also termed as a sintering furnace. It can be used in manufacturing materials such as tungsten carbide. Besides, high temperature operations, such furnaces can also be designed to offer low contamination vacuum environments. A custom designed vacuum furnace can help meet the most stringent application requirements. Thus, its important to invest in a customized high temperature and vacuum furnace that can add more value to your operations.

Using high temperature furnace equipment

The furnace assembly comprises several different components such as the heat zone, temperature controls, cooling systems, inert gas systems, and so on. In such a furnace, elements such as graphite, molybdenum, or tungsten might be used. These materials are resistant to extremely high temperatures. However, the nature of the materials being processed in the furnace should be considered while selecting furnace equipment.

Things to expect

When investing in a furnace for high temperature applications, there are certain things you should consider. Typically, such furnaces are suitable for temperatures as high as 3000 degrees centigrade. They can also be designed for vacuum levels ranging up to 10-6 torr, and gas pressures to 3000 psig. The hydraulic hot pressing force capabilities of such a furnace are usually in excess of 1200 tons. Besides this, there are several other features that can be integrated into a custom furnace. These include critical gas atmospheric control, hydrogen burn-off and several other gas atmosphere control technologies.

Graphite as a popular furnace element

A number of high temperature furnaces (also referred to as a sintering furnace) make use of graphite elements. Graphite, an allotrope of carbon, can withstand very high temperatures. Thats precisely why graphite is also used as an internal lining material in blast furnaces. Hot zones can be custom built in a sintering furnace using graphite for high temperature applications.

However, there are certain applications that have a high risk of carbon reaction. In such a case, all-metal refractory hot zones that comprise molybdenum and tungsten are a better alternative. These metals can be used as heat shields and furnace elements. All-metal furnaces are suitable for use in applications up to 2100 degrees centigrade. They are also suitable for contaminant-free vacuum environments. A furnace that combines graphite, as well as metal elements can be custom made if your application so requires.

Hence, most establishments prefer a custom high temperature furnace over a standard furnace.

by: Mark Kelvin

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