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Graphite thermal field, also known as graphite hot zone, is the integrated high-temperature core assembly inside vacuum furnaces and inert atmosphere furnaces. It consists of graphite heating elements, insulation components, graphite supports, crucibles, heat shielding plates and various custom graphite fixtures, working together to form a stable, controllable high-temperature environment. Dongguan Jiecheng Graphite Products Co., Ltd., founded in 2003, provides one-stop design, machining and assembly matching services for full-set graphite thermal fields customized for different furnace models and thermal processes.
Core Product Features
The whole graphite thermal field adopts high-purity isostatic graphite as the main raw material, which can withstand long-term service under ultra-high temperature up to 2400°C in vacuum or inert gas. It combines excellent electrical and thermal conductivity, enabling fast heating and uniform temperature distribution across the whole hot zone, which effectively reduces local temperature deviation. Its low thermal expansion and outstanding thermal shock resistance allow the whole thermal field to remain structurally stable during repeated heating and cooling cycles, without easy warping or cracking. Low ash content and low outgassing avoid impurity pollution to sintered workpieces and crystal materials. Each component of the thermal field can be precisely CNC machined and matched, making assembly and later replacement of wearing parts convenient.
Main Application Scenarios
- Monocrystalline silicon and polycrystalline silicon ingot growth for photovoltaic industry
- Silicon carbide crystal growth and semiconductor substrate high-temperature heat treatment
- Powder metallurgy, MIM and hard alloy vacuum sintering
- Advanced ceramic, ceramic target and magnetic material sintering
- Vacuum brazing, annealing and heat treatment of special alloys and rare earth materials
The stability of graphite thermal field directly determines the yield and consistency of high-temperature products. Jiecheng Graphite optimizes the thermal field structure according to your furnace size, temperature curve and atmosphere condition, and provides full material test reports for all graphite components. Worldwide delivery and technical support are available.
