Main Components
1.Loading and conveying system : The automatic loading device delivers the workpiece pallets into the furnace one by one.
2.Preheating Zone : The workpiece is preheated in this zone to reduce thermal stress.
3.Carburizing Zone : Carburizing is carried out by introducing carbon source gas at a controlled temperature (usually 880~950°C).
4.Diffusion Zone : Allows the carbon atoms that penetrate into the surface to fully diffuse at high temperature to obtain a uniform hardened layer.
5.Cooling and quenching system : The workpiece is rapidly cooled to form martensite structure and improve surface hardness.
6.Cleaning and tempering section (optional) : Clean the residual medium and then perform tempering to reduce internal stress.
7.Automatic control system : adopts PLC+touch screen to achieve precise control of temperature, atmosphere and time.
Typical process flow
Loading → Preheating → Carburizing → Diffusion → Quenching → Cleaning → Tempering → Unloading
The detailed instructions are as follows:
Preheating : Prevent parts from deforming or cracking due to rapid temperature increase.
Carburizing : Gases such as CO and CH₄ are introduced, and carbon atoms are adsorbed on the steel surface and diffuse into the interior.
Diffusion : Extend the holding time to make the carbon layer thickness uniform.
Quenching : Rapid cooling to transform the surface structure into high hardness martensite.
Tempering : Improve toughness, eliminate stress and stabilize the structure.
Carburizing Furnace advantage
Controllable Carbon Potential
The gas carburizing furnace utilizes controlled atmosphere technology to precisely adjust the carbon potential and temperature to achieve highly consistent carburized layer depth and hardness .
High Efficiency for Continuous Production
The pusher-type gas carburizing furnace allows automatic loading, carburizing, quenching, cleaning, and tempering in one continuous line. It is ideal for mass production and offers up to 30% higher productivity compared with batch-type furnaces.
Low Energy Consumption
With a well-sealed structure and high thermal efficiency, this furnace provides clean, energy-saving, and environmentally friendly heat treatment. Gas carburizing avoids the pollution of traditional salt bath or solid carburizing methods.
Uniform Carburizing Layer
The protective atmosphere prevents oxidation and decarburization, while the uniform furnace temperature ensures minimal distortion, making it perfect for precision components such as bearings and gears.
Versatile Heat Treatment Capabilities
This equipment supports multiple processes, including carburizing, carbonitriding, diffusion, direct quenching, and tempering, meeting various production needs in automotive, bearing, gear, and tool industries.
Intelligent Control System
Equipped with PLC and touchscreen interface, the furnace enables automatic monitoring, real-time data recording, and alarm functions. It can be integrated with MES or ERP systems to support digital and unmanned operation.
FAQ
1.What is a gas carburizing furnace?
A gas carburizing furnace is a heat treatment device that uses a controlled atmosphere to penetrate carbon atoms into the metal surface at high temperatures.
2.What is the main process flow?
The process includes charging, preheating, carburizing, diffusion, quenching, tempering and unloading.
3.What are its advantages over other carburizing methods?
Gas carburizing offers precise control, minimal deformation, is environmentally friendly, and is suitable for mass production.
4.What parameters should be considered when selecting a furnace?
You should pay attention to furnace temperature uniformity, carbon potential control, sealing performance, and degree of automation.
5.What are the potential problems?
Atmosphere control is complex, costly, and needs to prevent part deformation.
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