Double Door Sintering Furnace for Zirconia Inserts Installed

double-door-furnace

RESOURCES

July 25, 2019
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Silcarb has successfully completed the installation of a high-temperature sintering furnace designed for zirconia inserts, engineered to operate at temperatures up to 1800°C. The furnace features a double door configuration, allowing loading and unloading from both ends of the chamber for improved operational efficiency and easier material handling.

Sintering furnaces operating at such elevated temperatures are widely used in advanced ceramics manufacturing, particularly for materials like zirconia that require precise high-temperature processing to achieve their final mechanical and structural properties.

Official Update

Silcarb has just finished installing a sintering furnace for zirconia inserts. The furnace has a double door for ease of loading i.e. loading and unloading from two ends.

The furnace is manufactured using ultra lightweight refractory thereby reducing both the energy consumed for sintering and also reducing the surface load on the heaters.

The expected life of these MoSi₂ heaters manufactured by Silcarb is in excess of three years of continuous operation.

The furnace is rated for 1800 degrees C and operating every cycle at 1750 degrees C with a soaking time of 12 hours at these elevated temperatures. Owing to the ultra lightweight refractory a very high ramp up is possible when required.

Inner chamber of the double door furnace

Sintering of Zirconia Inserts

Zirconia is a high-performance ceramic material known for its exceptional strength, thermal resistance, and wear resistance. To achieve these properties, zirconia components must undergo sintering at extremely high temperatures.

During sintering, the ceramic material is heated to temperatures close to its melting point, allowing particles to bond together and form a dense, durable structure.

Applications of zirconia inserts include:

  • cutting tools
  • wear-resistant industrial components
  • medical and dental ceramics
  • precision engineering parts
  • advanced ceramic tooling

High temperature sintering furnaces are essential to ensure consistent microstructure and mechanical performance of zirconia components.

Double Door Furnace Design

The double door configuration allows materials to be loaded and unloaded from either side of the furnace chamber. This design improves operational flexibility and reduces handling time, particularly in production environments where large batches of components are processed.

Advantages include:

  • easier loading and unloading operations
  • improved workflow in production environments
  • better accessibility to the furnace chamber
  • increased operational efficiency

Such furnace designs are often used in facilities where continuous production cycles are required.

Ultra Lightweight Refractory Construction

The furnace is built using ultra lightweight refractory insulation materials, which significantly reduce thermal mass and improve energy efficiency.

Benefits of lightweight refractory systems include:

  • reduced energy consumption during heating cycles
  • faster ramp-up rates when required
  • lower thermal load on heating elements
  • improved temperature stability inside the furnace chamber

These advantages help reduce operating costs while maintaining reliable furnace performance.

Long Life MoSi₂ Heating Elements

The furnace uses MoSi₂ heating elements manufactured by Silcarb, designed for continuous operation in high temperature environments.

These heating elements offer:

  • excellent oxidation resistance
  • stable performance at temperatures approaching 1800°C
  • long service life in demanding sintering applications
  • reliable heating during extended soak cycles

The expected service life of these heating elements exceeds three years of continuous operation under normal working conditions.

Silcarb’s Expertise in High Temperature Sintering Furnaces

Silcarb designs and manufactures a wide range of high temperature furnace systems for advanced materials processing, including:

  • ceramic sintering furnaces
  • MoSi₂ heated high temperature furnaces
  • aluminium melting furnaces
  • research furnaces for advanced materials
  • bright annealing furnaces
  • customized industrial furnace systems

Each system is engineered to deliver high thermal efficiency, reliable operation, and long service life in demanding industrial applications.

About Silcarb

Silcarb is an Indian manufacturer specializing in industrial furnaces, silicon carbide heating elements, MoSi₂ heating elements, kiln furniture, advanced technical ceramics, and wear-resistant ceramic components. With decades of expertise in high-temperature engineering, Silcarb supplies furnace systems and ceramic materials to industries including ceramics, metallurgy, aluminium processing, aerospace, defence, and advanced materials manufacturing.