Vibrated Graphite – Isotropic Special Graphite Material

  • High temperature resistance and corrosion resistance.
  • Self-lubrication property.
  • High purity and high electrical conductivity.
  • Low ash content and high mechanical strength.
Vibrated graphite blocks and their manufacturing process

Vibrated graphite has a uniform structure with medium grain size. Besides, it becomes very popular because of its low ash content, enhanced mechanical strength, and good electrical and thermal stability, and is widely used for processing large-scale workpieces. It can also be further strengthened after resin impregnation or anti-oxidation treatment.

It is widely used as a heating & insulation element in the production of polysilicon and monocrystalline silicon furnaces in the photovoltaic industry. It is also widely used in manufacturing heating hoods, heat exchanger components, melting and casting crucibles, construction of n nodes used in electrolytic processes, and manufacturing of crucibles for melting and alloying.

Table 1: Specification of Vibrated Graphite
Model Density (g/cm3) Particle Size (mm) Specific Resistance (μΩ.m) Porosity Shore Hardness Compressive Strength (MPa) Flexural Strength (MPa) CTE (×10-6 °C-1) Application
MC-0(Extruded) 1.75 0.8/2.0 9 40 18 2.5 Heat exchanger/heater
MC-1(Extruded) 1.74 0.8/2.0 9 38 16 2.3 Heat exchanger/heater
MC-2(Extruded) 1.70 0.8/2.0 10 29 12 2.3 Heat exchanger/heater
MC-3(Extruded) 1.68 0.8/2.0 10 18 8 2.3 Heat exchanger/heater
  • 1 MPa = 10.2 kgf/cm2; 1 W/m.k = 0.86 kcal/cm.h.°C
  • These properties are typical values and not guaranteed.
Molding Technology

The principle of making vibrated graphite is to fill the mold with a paste-like mixture, and then place a heavy metal plate on top of it. In the next step, the material is compacted by vibrating the mold. Compared with extruded graphite, the graphite formed by vibration has higher isotropy. graphite products are produced by extrusion method.

The principle of vibrated graphite block