The High-temperature Graphite (HTG) Furnace is the most economical vacuum furnace system for processes that require high temperatures up to and above °C that are not affected by a carbon containing environment, for materials please see our APF product line. High-temperature graphite furnace hot zones are made entirely from high purity graphite, and due to graphite&#;s excellent thermo-mechanical properties allow rapid heating and cooling to reduce overall process cycles. In most applications the hot zone has a long operating life, but for aggressive materials hot zone replacement in the field is a fast and easy process.
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High temperature graphite vacuum furnace systems are available in both vertical and horizontal orientations with round or square hot zones. Common configurations are either a radial heater for round hot zones and 2 or 4 sided panel heaters for square hot zones. More demanding applications in terms of temperature uniformity may require the addition of top and bottom trim heaters. HTG systems are designed to the highest quality with safety and long service lifetime in mind.
High Vacuum
Bottom Loading
Combustible Gas
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*Larger models as well as bottom loading versions of similar sizes also available.
The graphite heater is the electric heating body parts made of graphite materials. Graphite has good electrical and thermal conductivity, and it is commonly used in special industrial furnaces as a heating element. The graphite heater has good high-temperature strength, the strength of graphite is far worse than metal at normal temperature, but as the temperature increases, the strength gradually increases and it will exceed all oxides and metals. the graphite has some properties of metals and ceramics, with good electrical and thermal conductivity, and a pupil and a small thermal expansion coefficient, so the graphite is one of the best thermal shock resistance of materials.
The graphite heater requirements generate a stable thermal field used in the heating furnace, so the graphite should be homogeneous and has stable resistivity. The graphite electrode was the heating body in the early selection of industrial furnace, and the high density and power electrode was used as heating element later (smelting quartz glass also used graphite electrode as the heating element). In the semiconductor industry development and refining silicon, single crystal germanium, gallium, indium, indium, and other materials, the high-purity graphite with fine structure and homogeneous graphite were used as graphite heating in the heating furnace. The carbon cloth or graphite cloth were used in some special industrial furnace and experimental furnace as the heating body.
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