High Convection Pit Furnace

1.The back lining material has no oxidation on the surface, is slightly 脱碳 (decarburized), has a high spheroidization rate, and stable quality.

2.The furnace cover (including the direct pouring port for molten metal) adopts ceramic fiber pressing, resulting in better heat insulation effect and a more lightweight and durable structure design.

3.The furnace body (furnace wall/furnace bottom) uses high-grade ceramic fiber insulation, with a dense pressing process. The furnace bottom has multiple layers of heat insulation, fire resistance, and seamless heat insulation for better results.

4.The inner lining is lightweight with a long service life, realizing a reasonable heating method for convection, making the temperature of the inner and outer workpieces more uniform, with smaller hardness deviation and more guaranteed global spheroidization tissue.

5.The ultra-strong convection fan has a large air volume, high strength, fast temperature rise, and saves time and electricity.

6.The strong cooling system accelerates the cooling speed, saves time, and improves production efficiency.

1.Loading: The workpiece is hoisted from the furnace top into the furnace chamber.

2.Sealing the Furnace: The furnace lid is closed, creating a sealed heating space.

3.Introducing Protective Gas: Nitrogen or a controlled atmosphere is introduced to prevent oxidation or decarburization.

4.Heating: The heating system is activated, and the furnace temperature gradually rises to the set temperature.

5.Forced Convection Circulation: The fan operates, circulating the high-temperature gas within the furnace to achieve uniform heating.

6.Holding Stage: The workpiece is held at the target temperature for a certain period to allow changes in the metal's microstructure.

7.Controlled Cooling: The workpiece is furnace-cooled according to process requirements or transferred to the next heat treatment step.

1.Bearing Industry: Used for batch annealing of bearing rings and rolling element blanks.

2.Fastener Industry: Used for spheroidizing annealing of cold-forged parts such as bolts and nuts to improve subsequent machining performance.

3.Steel Wire Manufacturers: Used for annealing coiled steel wire to ensure consistent material properties across the entire coil.

4.Automotive Parts Industry: Used for pre-treatment of batch structural parts for heat treatment.

5.Standard Parts Batch Production Companies: Suitable for centralized heat treatment of large quantities of small steel parts.