Sleeve-Type Graphite Heaters

Semicorex sleeve-type graphite heaters function by leveraging the resistive heating effect, and realize high-efficiency conversion from electricity to heat to deliver rapid temperature rise and uniform heat distribution within the crystal growth furnaces. They can effectively melt poly-silicon materials and build consistent thermal conditions required for single crystal formation.

Advantages of Semicorex sleeve-type graphite heaters

With multiple excellent performances listed below, Semicorex sleeve-type graphite heaters are well-suited for the heating applications under high-temperature, high-purity, high-vacuum and special atmospheres, playing an essential role in monocrystalline silicon ingot production in advanced semiconductor and photovoltaic industries.

1.Rapid heating performance

The excellent electrical conductivity of graphite enables rapid heat generation when electricity is supplied, efficiently conducting heat to target workpieces. Made of high-grade graphite, Semicorex sleeve-type graphite heaters are bale to achieve rapid temperature ramp-up of thermal fields to required working temperatures, fully satisfying the stringent requirements of high-quality single-crystal growth.

2.Uniform Heat distribution

Semicorex sleeve-type graphite heaters are able to deliver uniform heat distribution throughout single-crystal growth furnaces owing to their superior thermal conductivity. This performance effectively avoids crystal defects caused by regional overheating or temperature variation, securing steady quality of monocrystalline silicon ingots.

3.Stable thermal stability

Graphite features an extremely high melting point exceeding 3000 °C and barely loses mass when exposed to ultra-high-temperature arc burning. This remarkable property allows Semicorex sleeve-type graphite heaters to perform reliably and keep a stable structure without softening, deformation or melting in harsh high-temperature thermal fields for single-crystal growth.

4. Strong corrosion resistance

During single-crystal growth furnaces, various corrosive process gases or chemicals may be present and erode furnace internal components. Relying on their reliable corrosion resistance, Semicorex sleeve-type graphite heaters can withstand the corrosive attacks efficiently and retain their structural integrity and consistent performance, which greatly cuts down the components damage and replacement cycles.