1.What Is Carburizing Heat Treatment?
Carburizing Heat Treatment is one of the most widely used surface hardening processes for steel components. During the carburizing process, carbon atoms diffuse into the surface layer of low-carbon steel at high temperatures, creating a hard, wear-resistant case while maintaining a tough and ductile core.
This heat treatment process is commonly used in the automotive, aerospace, mining, construction machinery and industrial equipment industries for gears, shafts, bearings and precision mechanical parts that require excellent wear resistance and fatigue strength.
Carburizing is typically performed in continuous furnaces, mesh belt furnaces, roller hearth furnaces, pit furnaces and vacuum heat treatment furnaces. Since furnace components operate continuously at temperatures ranging from 850°C to 1050°C, they require premium heat-resistant alloy castings capable of resisting thermal fatigue, oxidation and carburization.
ECOOSUN manufactures a complete range of Heat Treatment Baskets, Carburizing Baskets, Heat Treatment Trays, Furnace Fixtures, Radiant Tubes, Furnace Rolls and Custom Furnace Parts designed specifically for carburizing heat treatment applications.
Custom Heat Treatment Furnace Parts
Custom heat treatment basket designed for stable loading, uniform heat circulation and repeated high-temperature cycles.
Heavy-duty furnace basket manufactured from heat-resistant alloy for demanding industrial furnace applications.
Carburizing basket engineered to resist oxidation, thermal fatigue and deformation in controlled-atmosphere furnaces.
Heat-resistant basket with optimized grid structure for improved airflow, load distribution and longer service life.
Custom furnace charging basket produced to your drawings, furnace dimensions and operating requirements.
Precision-cast heat treatment fixture built for annealing, hardening, tempering and other heat treating processes.
OEM /ODM heat treatment furnace part designed for reliable replacement, accurate fit and consistent production performance.
Cast steel furnace basket manufactured by sand casting, investment casting or lost foam casting for custom applications.
2.Recommended Furnace Components for Carburizing Furnaces
Carburizing furnaces operate continuously under high-temperature, carbon-rich atmospheres where furnace components are exposed to severe thermal cycling, oxidation and carburization. Selecting the correct heat treatment furnace parts is essential for maximizing production efficiency and extending service life.
ECOOSUN supplies a complete range of heat-resistant cast steel furnace components, including:
- Heat Treatment Baskets
- Carburizing Baskets
- Heat Treatment Trays
- Heat Treatment Fixtures
- Radiant Tubes
- Furnace Rolls
- Furnace Conveyor Components
- Custom Heat Resistant Alloy Parts
All products are manufactured using Lost Foam Casting, Investment Casting, or traditional Sand Casting, depending on component geometry, dimensional tolerance and production requirements. Every furnace component can be customized according to customer drawings, samples or OEM specifications.
These products are widely used in:
- Continuous Furnaces
- Roller Hearth Furnaces
- Mesh Belt Furnaces
- Vacuum Heat Treatment Furnaces
- Sealed Quench Furnaces
3. Built to Fit Your Existing Furnace
Choosing the proper heat-resistant alloy is critical for extending the service life of carburizing furnace components. Different furnace temperatures, carbon potentials and loading conditions require different alloy grades.
ECOOSUN recommends several proven heat-resistant alloy materials for carburizing furnace applications:
| Alloy | Typical Application |
|---|---|
| HK40 Alloy | Radiant Tubes, Furnace Rolls, Heat Treatment Trays |
| HU Alloy | Heat Treatment Baskets, Furnace Fixtures |
| GX40CrNiSi25-20 | Heavy-duty Furnace Components |
| Custom Heat Resistant Cast Steel | OEM Furnace Parts |
Our engineering team selects the most suitable alloy based on:
- Operating Temperature
- Furnace Atmosphere
- Component Geometry
- Mechanical Loading
- Required Service Life
With extensive experience in heat-resistant alloy castings, we help customers reduce cracking, distortion, oxidation and premature failure while improving furnace uptime.
Carburizing heat treatment is a surface hardening process that introduces carbon into the surface of steel to improve wear resistance while maintaining a tough core.
Heat Treatment Baskets, Heat Treatment Trays, Furnace Fixtures, Radiant Tubes, Furnace Rolls and Furnace Conveyor Components are among the most commonly replaced furnace parts.
Heat-resistant alloys such as HU Alloy, HK40 Alloy and other high-temperature cast steels are widely used depending on furnace temperature and atmosphere.
Yes. ECOOSUN manufactures custom heat treatment baskets, furnace trays and fixtures according to 2D drawings, 3D models or physical samples.
Depending on the basket structure and production requirements, Lost Foam Casting, Investment Casting and Sand Casting are commonly used. Lost foam casting is especially suitable for large and complex heat treatment baskets, while investment casting provides higher dimensional accuracy for precision furnace components.
The most common causes include thermal fatigue, oxidation, carburization, improper alloy selection, excessive loading and repeated heating and cooling cycles. Selecting the correct heat-resistant alloy and proper basket design can significantly extend service life.
Some furnace components can be repaired through welding or refurbishment. However, severely cracked, distorted or oxidized components are generally replaced to ensure production efficiency, product quality and furnace safety.
To provide an accurate quotation, we recommend supplying:
- 2D drawings or 3D models
- Product dimensions
- Required alloy grade
- Furnace operating temperature
- Working atmosphere
- Expected service life
- Annual quantity
If drawings are unavailable, our engineering team can also evaluate physical samples or existing furnace components.
Technical Review: ECOOSUN Engineering Team
Reviewed by: Heat-Resistant Alloy Casting Engineers
Last Updated: July 2026
The service life of a heat treatment basket depends on the operating temperature, furnace atmosphere, loading conditions and alloy grade. With the correct heat-resistant alloy and proper design, furnace baskets can achieve significantly longer service life and reduce replacement frequency.
Most heat treatment baskets manufactured from heat-resistant alloy cast steel are designed to operate continuously between 800°C and 1200°C. The recommended alloy should be selected according to the maximum operating temperature and furnace atmosphere.
A heat treatment basket is designed to securely hold loose or irregular workpieces while allowing excellent airflow and heat circulation. A heat treatment tray is typically used for flat or regularly shaped components that require stable support during the heat treatment process.
Carburizing baskets are widely used in the automotive, aerospace, mining, agricultural machinery, heavy equipment, bearing manufacturing and gear production industries. They are suitable for batch and continuous heat treatment applications.
Yes. We manufacture custom heat treatment baskets for various furnace types, including continuous furnaces, roller hearth furnaces, mesh belt furnaces, sealed quench furnaces and vacuum heat treatment furnaces. Every basket can be customized according to furnace dimensions and production requirements.
Selecting the appropriate heat-resistant alloy depends on several factors, including operating temperature, furnace atmosphere, workpiece weight, thermal cycling frequency and expected service life. Our engineering team provides alloy selection recommendations based on your actual working conditions.
For the most accurate quotation, drawings should include overall dimensions, loading capacity, mesh or opening design, lifting points, operating temperature, alloy requirements and any special tolerances. 2D drawings, 3D models or physical samples are all acceptable.
Lost Foam Casting is ideal for manufacturing complex heat treatment baskets with integrated structures, consistent wall thickness and reduced welding requirements. It also allows greater design flexibility while maintaining excellent dimensional consistency for large cast components.
Investment Casting is recommended for smaller furnace components requiring higher dimensional accuracy, finer surface finish and more complex details. Larger furnace baskets and heavy-duty furnace parts are often better suited to Lost Foam Casting or Sand Casting.
Yes. ECOOSUN manufactures both OEM furnace parts for new equipment and replacement furnace parts compatible with existing industrial furnaces. Components are produced according to customer drawings, samples or reverse-engineered specifications.
Every heat treatment basket undergoes strict quality inspection before delivery, including dimensional inspection, visual examination, material verification and process quality control. Additional inspections can be provided according to customer specifications.
ECOOSUN specializes in Heat Treatment Baskets, Carburizing Baskets, Heat Treatment Trays, Furnace Fixtures and Heat-Resistant Alloy Castings. With expertise in Lost Foam Casting, Investment Casting and Sand Casting, we provide custom furnace components with reliable quality, engineering support and global OEM manufacturing services for industrial furnace and heat treatment applications.
