Meet Your Process Requirements
We tailor hearth diameter, rotation speed, and heating zones to your workpiece specifications, heating temperature, soak time, and production takt.
Rotary-Hearth Furnace Series
Rotary-hearth furnaces are suited to forgings, disc-shaped parts, ring-shaped parts, dies, hardware components, and takt-based continuous heating, annealing, normalizing, and tempering. Based on workpiece material, dimensions, weight, throughput and cycle time, hearth diameter, charging/discharging method, and available floor space, Suneng delivers custom-engineered rotary-hearth heat-treatment furnace solutions.
We tailor hearth diameter, rotation speed, and heating zones to your workpiece specifications, heating temperature, soak time, and production takt.
We match the rotating-hearth design, charging/discharging method, and control system to your shop layout, loading/unloading approach, and automation requirements.
Through optimization of hearth rotation speed, zone layout, and temperature control, there is room to improve heating consistency across the workpiece.
We can carry out an energy-efficiency assessment based on furnace insulation, heating zones, and operating schedule.
The rotating hearth, drive system, refractory lining, and temperature control are configured to your production conditions for improved operating stability.
A rotary-hearth furnace cannot be quoted from the furnace type name alone. The figure depends on the workpiece material, dimensions and single-piece weight, throughput cycle time, hearth diameter, effective charging area, number of temperature zones, charging and discharging method and site conditions, and is ultimately governed by the technical proposal agreed by both parties.
| Rotary-hearth furnace suits | Pusher furnace suits | Bogie-hearth furnace suits |
|---|---|---|
| Workpieces suited to ring-shaped loading or takt-based rotary heating | Workpieces suited to pusher-style continuous travel through the furnace | Large workpieces or heavier individual pieces |
| Fairly steady batch volumes | Workpieces that can advance on trays, baskets, or in batches | Cyclic, whole-furnace loading and unloading |
| Continuous or semi-continuous takt-based production needed | Steady production takt | Bogie support or overhead-crane lifting required |
| Defined requirements for hearth rotation speed, zone layout, and charging/discharging takt | Well-defined dwell time in the furnace | Irregularly shaped workpieces |
| Suited to forgings, disc-shaped parts, ring-shaped parts, dies, and some small-to-medium batch workpieces | Suited to continuous annealing, tempering, heating, and similar applications | Suited to heat treatment of large castings and forgings, dies, and welded structures |
Rotary-hearth furnaces suit ring-pattern loading, dies, forgings, small-to-medium batch workpieces, and parts that require cyclic continuous heating. The hearth diameter, rotation mechanism, loading method, workpiece weight, and charge/discharge cycle all influence the furnace-chamber zoning, the hearth load capacity, and the charging/discharging arrangement.
Common processes include heating, annealing, normalizing, tempering, and aging. For forge heating or cyclic continuous production, the workpiece placement, heating uniformity, discharge temperature, rotation speed, and integration with on-site automation all need to be confirmed.
Understand the process and throughput requirements
Provide the proposal and configuration list
Finalize the structure and technical solution
Production, manufacturing and factory acceptance
Installation, commissioning and after-sales follow-up
Rotary-hearth furnaces are well suited to forgings, disc-shaped parts, ring-shaped parts, dies, hardware components, and batch workpieces that lend themselves to ring-pattern loading or cyclic rotary heating. Whether a rotary-hearth design is the right fit depends on the workpiece weight, loading arrangement, charge/discharge cycle, and available floor space.
Yes. Depending on the project, a rotary-hearth furnace can be used for cyclic continuous heating, annealing, normalizing, tempering, and certain forge-heating applications. Different processes call for different maximum temperatures, soak times, hearth rotation speeds, temperature-zone layouts, cooling methods, and discharge cycles, all of which should be confirmed item by item during the engineering stage.
The price of a rotary-hearth furnace is driven mainly by the hearth diameter, the effective loading area, the hearth load capacity, the number of temperature zones, the maximum temperature, the throughput cycle, the heating method, the atmosphere and cooling requirements, the charge/discharge arrangement, the level of automation, the control system, and the scope of installation and commissioning. We recommend submitting your parameters first so we can give you a meaningful price range.
A rotary-hearth furnace uses a rotating hearth to achieve cyclic heating with continuous or semi-continuous charging and discharging, making it well suited to applications with relatively steady batch volumes. A bogie-hearth furnace is better suited to whole-charge loading and unloading of large, heavy, or irregularly shaped workpieces. The choice depends on workpiece dimensions, loading method, throughput cycle, and on-site lifting conditions.
A rotary-hearth furnace is better suited to ring-pattern loading, a rotating hearth, and fixed charge/discharge positions for cyclic production. A pusher furnace is better suited to trays, baskets, or batch workpieces advanced in a straight line. The choice calls for a comparison of the loading arrangement, the dwell time inside the furnace, the charge/discharge interface, and ease of maintenance.
Heating uniformity depends on the effective loading area, the hearth rotation speed, the workpiece arrangement, the temperature-zone layout, the heating elements or combustion system, furnace-chamber circulation, the temperature-measurement points, and the agreed acceptance criteria. Specific figures cannot be separated from the committed project configuration and should be confirmed in line with the operating conditions, the test conditions, and the contractual terms.
It is best to first assess the condition of the hearth rotation mechanism, the drive system, the sealing structure, the refractory lining, the heating system, the temperature-control zoning, the safety interlocks, and the electrical control system. Whether the furnace is a suitable candidate for a retrofit or overhaul depends on the condition of the furnace body, the fault history, spare-part availability, the production load, and the available shutdown window.
We recommend preparing the workpiece material, form, dimensions, and weight per piece; the required throughput per hour; the hearth diameter or available floor space; the maximum temperature and typical working temperature; the heat-treatment process; the charge/discharge arrangement; the atmosphere and cooling requirements; the automation needs; and details of the on-site layout.