GD130-250 Continuous Bright Annealing Furnace

The GD130-250 Continuous Bright Annealing Furnace is a continuous heat treatment system integrating feeding and conveying, controlled heating, protective atmosphere processing, cooling and automatic temperature control.

The furnace is designed for continuous bright annealing applications where stable heating conditions and controlled atmosphere protection are required. The equipment configuration can be adjusted according to the workpiece, production capacity and process requirements.

This project incorporates a high-temperature muffle structure, multi-zone temperature control, protective atmosphere system and water-cooling section to support continuous and controlled production.

2. Muffle Tube (Furnace Liner) Section

Constructed from imported Swedish SUS310S heat-resistant, oxidation-resistant stainless steel plate (8 mm thick). The upper section is pressed into an arched (segmental) shape for reinforcement to prevent the furnace liner from collapsing downward; the lower section is pressed into a trough shape to effectively resist thermal shock deformation. Length: approximately 4200 mm. The front section of the heating zone muffle is fixed, while the rear section is designed with flow-direction tension balancing to prevent deformation caused by stress and thermal expansion/contraction.

3. Front Elbow Section Length: 1500 mm. The inner liner is made of 304 material, and the outer end is sealed with cotton insulation and an iron plate.

4. Cooling Section

The water-cooling section consists of three segments and features a closed-loop water jacket structure. Muffle Material: The first section features a 310S inner liner, 1000 mm in length, made of 8 mm thick stainless steel; the second and third sections are each 3000 mm long, with 6 mm thick SUS304 inner liners. The outer jackets are all made of high-quality A3 steel, 5 mm thick plates. Each section has a separate water inlet at the rear left and an outlet at the front right, enabling segmented circulation. This ensures faster and more effective cooling of the final product.

5. Furnace Main Body:

The furnace main body is 4000 mm long and consists of 5 zones. The outer shell and support frame are made of steel plates and structural steel. The muffle is supported by high-temperature bricks as the refractory material for the resistance heating elements; high-temperature ceramic fiber wool is used for insulation, and the top cover is insulated with high-temperature ceramic fiber blocks. The entire structure is simple and easy to maintain, with excellent thermal insulation performance.

6. The electrical control cabinet is a vertical, standalone unit with an elegant and professional appearance.

It employs five Digital Electric smart instruments for automatic temperature control and heating.

During operation, it displays three-phase working current and voltage, and is equipped with control functions such as ground fault protection and over-temperature alarm with power cutoff.

The heating elements are automatically controlled by five power regulators, allowing for adjustable heating power and high temperature control accuracy.

Note: The above specifications represent a reference configuration of the GD130-250 furnace. Final specifications can be customized according to the workpiece, process and production requirements. 

The GD130-250 Continuous Bright Annealing Furnace is designed for continuous heat treatment applications requiring controlled heating, protective atmosphere processing and controlled cooling.

Typical applications can include stainless steel and other suitable metal components where a clean surface and reduced oxidation are required after heat treatment.

The actual furnace configuration should be selected according to the workpiece material, dimensions, loading arrangement, required heat treatment process and production capacity.

Rexin can customize the GD130-250 Continuous Bright Annealing Furnace according to different workpieces and production requirements. The final furnace configuration is determined after reviewing the customer's material, dimensions, heat treatment process and required capacity.

Rexin focuses on customized industrial heat treatment furnace solutions, from technical evaluation and furnace design to manufacturing, testing and delivery. Each furnace configuration is developed according to the customer's workpiece, heat treatment process and production requirements.

Q1: What is the GD130-250 Continuous Bright Annealing Furnace used for?
The furnace is designed for continuous bright annealing and controlled-atmosphere heat treatment. The final process configuration is selected according to the workpiece material, dimensions and required surface condition.

Q2: What is the rated working temperature of this furnace?
The reference GD130-250 configuration has a rated working temperature of 1200°C. The actual operating temperature should be determined according to the material and heat treatment process.

Q3: Does the furnace use a protective atmosphere?
Yes. The furnace is equipped with a protective atmosphere system to control the processing environment and reduce surface oxidation during heat treatment. The atmosphere configuration is selected according to the workpiece and process requirements.

Q4: Can the furnace dimensions and production capacity be customized?
Yes. Furnace dimensions, heating zones, conveying system, cooling section, atmosphere system and production capacity can be configured according to the customer's production requirements.

Q5: What information is required for a quotation?
Please provide the workpiece material, dimensions, loading method, required heat treatment process, production capacity and surface requirements. Rexin can then recommend a suitable furnace configuration.

Send us your workpiece material, dimensions, heat treatment process and required production capacity. Our engineers will recommend a suitable furnace configuration for your application.