Pit Type Gas Nitrocarburizing Furnace

Rexin's Pit Type Gas Nitrocarburizing Furnace is designed for gas nitrocarburizing and gas nitriding of steel components. Through controlled thermochemical treatment, nitrogen and carbon are introduced into the workpiece surface during nitrocarburizing, helping improve wear resistance and surface performance.

The furnace adopts a vertical pit-type structure with a sealed treatment chamber for controlled-atmosphere processing. It is suitable for gears, shafts, dies, molds and other steel components requiring surface treatment.

Rexin provides customized furnace solutions based on workpiece dimensions, material, loading requirements and heat treatment processes. Furnace size, heating capacity, atmosphere supply and control configurations can be adapted to specific production needs.

Gas nitrocarburizing is a thermochemical surface treatment process in which nitrogen and carbon diffuse into the surface of steel components under a controlled furnace atmosphere. The treatment forms a compound layer and an underlying diffusion zone, with the resulting characteristics depending on the steel grade and process conditions.

During operation, workpieces are loaded into the vertical pit-type furnace. After the treatment chamber is sealed, the furnace is heated according to the selected process program, and the required treatment atmosphere is introduced and controlled. Temperature, treatment time and atmosphere conditions are managed according to the workpiece material and required surface properties.

Compared with conventional gas nitriding, gas nitrocarburizing introduces both nitrogen and carbon during treatment. It is commonly used to improve wear resistance and surface performance of gears, shafts, dies and other industrial steel components.

The specific treatment atmosphere, gas supply arrangement and process parameters are determined according to the selected furnace configuration and customer requirements.

1. Vertical Pit-Type Furnace Body
The furnace adopts a vertical pit-type structure, with the treatment chamber arranged below the loading opening. The furnace body incorporates thermal insulation to reduce heat loss during operation.

2. Sealed Furnace Chamber
The treatment chamber is designed for controlled-atmosphere heat treatment. The sealing arrangement helps maintain the required process environment during gas nitriding and nitrocarburizing.

3. Electric Heating System
Electric heating elements provide the heat required for the selected treatment cycle. Heating capacity and element arrangement are determined according to furnace dimensions and operating requirements.

4. Atmosphere Supply and Control System
The gas supply system introduces the process atmosphere into the treatment chamber. Gas supply and control arrangements are configured according to the nitriding or nitrocarburizing process requirements.

5. Temperature and Process Control
The control system manages furnace temperature and the programmed treatment cycle. Specific control functions depend on the selected equipment configuration.

6. Workpiece Loading Arrangement
Workpieces are positioned using suitable fixtures or loading arrangements. The loading dimensions and capacity are designed according to the size, weight and quantity of the components being treated.

1. Dual-Process Capability
Designed for gas nitrocarburizing and gas nitriding, allowing customers to select suitable surface treatment processes for different steel components and production requirements.

2. Improved Surface Wear Resistance
Gas nitrocarburizing introduces nitrogen and carbon into the steel surface, helping improve wear resistance and surface performance when suitable process conditions are applied.

3. Controlled-Atmosphere Processing
The sealed furnace chamber supports controlled-atmosphere treatment. Gas supply and process control configurations can be selected according to the required heat treatment process.

4. Suitable for Industrial Steel Components
Applicable to gears, shafts, dies, molds and other suitable steel workpieces requiring thermochemical surface treatment.

5. Customizable Furnace Configuration
Furnace chamber dimensions, heating capacity, workpiece fixtures and atmosphere control arrangements can be adapted to different workpiece sizes and production needs.

6. Process-Oriented Equipment Design
Furnace configuration can be developed around the customer's workpiece material, required treatment process, loading arrangement and production capacity.

Rexin's Pit Type Gas Nitrocarburizing Furnace is suitable for thermochemical surface treatment of various steel components. Depending on the workpiece material and required surface properties, gas nitrocarburizing or gas nitriding can be selected.

1. Gears and Transmission Components
Used for suitable steel gears, gear shafts and transmission components requiring improved surface wear resistance.

2. Shafts and Mechanical Parts
Applicable to shafts, pins, sleeves and other mechanical components where surface wear resistance is important.

3. Dies, Molds and Tooling
Suitable for selected steel dies, molds and tooling components requiring surface treatment to support wear resistance in service.

4. Industrial Steel Components
Can be configured for other compatible steel workpieces according to their dimensions, material grade, loading arrangement and treatment requirements.

Information Required for Furnace Selection
To recommend a suitable furnace configuration, please provide the workpiece material, dimensions, weight per batch, expected production capacity and required treatment process. If available, please also share the target surface hardness, compound layer requirements or case depth specifications for technical evaluation.

Note: Treatment results depend on the steel grade, process parameters and actual operating conditions. Workpiece compatibility and performance targets should be confirmed before finalizing the furnace design.

Technical specifications are customized according to workpiece materials, dimensions, production capacity and heat treatment requirements. Final specifications are subject to the confirmed technical proposal. 

These factory photos show Rexin's vertical pit-type furnace equipment, including the furnace body, lid assembly, control cabinet and installation arrangements. Furnace configurations may vary depending on project requirements.