Product Selection Differences for Glass Melting or Annealing Furnaces

When selecting between glass melting and annealing furnaces, several key differences should be considered:

1. Function:

   • Glass Melting Furnaces: These are used to heat raw materials to a high temperature to melt and form glass. They are crucial in the glass manufacturing process.
   • Annealing Furnaces: These are used to cool glass gradually to relieve internal stresses and improve its strength. Annealing is essential to prevent glass from breaking or shattering due to thermal stresses.

2. Temperature Range:

   • Glass Melting Furnaces: Operate at very high temperatures to melt glass raw materials, typically ranging from 1,400°C to 1,600°C.
   • Annealing Furnaces: Operate at lower temperatures to gradually cool the glass and relieve internal stresses, usually ranging from 400°C to 600°C.

3. Construction:

   • Glass Melting Furnaces: Designed with materials and insulation that can withstand high temperatures and harsh working conditions.
   • Annealing Furnaces: Constructed to provide controlled cooling rates and uniform heating distribution to ensure proper annealing of the glass.

4. Control System:

   • Glass Melting Furnaces: Require precise temperature control and regulation for the glass melting process.
   • Annealing Furnaces: Need sophisticated control systems to manage cooling rates and ensure proper annealing of the glass.

5. Energy Consumption:

   • Glass Melting Furnaces: Typically consume more energy due to the high temperatures required for melting glass.
   • Annealing Furnaces: Generally consume less energy compared to glass melting furnaces as they operate at lower temperatures.

6. Applications:

   • Glass Melting Furnaces: Used in glass manufacturing industries to produce glass containers, fiberglass, flat glass, etc.
   • Annealing Furnaces: Used for post-production processes in glass manufacturing to enhance the strength and durability of glass products.

7. Leading Companies:

   • Glass Melting Furnaces: Leading manufacturers include companies like SORG, Horn Glass Industries, and CNUD EFCO.
   • Annealing Furnaces: Leading manufacturers include companies like SECO/WARWICK, Wisconsin Oven, and Cress Manufacturing Company.

Considering these differences can help you make an informed decision based on your specific requirements and applications in the glass industry.