HRF1350-06 Hot Air Trolley Furnace with ±5℃ Temperature Uniformity and 750*2000*900mm Chamber Dimensions for Industrial Curing and Annealing

As a high-performance hot air circulation trolley furnace, the HRF1350-06 eliminates the defects of localized heating and excessive temperature difference found in traditional furnaces. Equipped with an overall hot air circulation system and intelligent temperature control system, it fully guarantees the accuracy of heat treatment processes.

In terms of temperature control accuracy, the furnace temperature uniformity reaches ±5℃ at a constant temperature of 600℃, exceeding the general industry standard. It ensures uniform heating of all workpieces inside the furnace, effectively avoiding cracking, deformation and unqualified processing results caused by local overheating and uneven temperature, thereby improving the finished product qualification rate. Supporting multi-stage programmable temperature control, the equipment allows customized heating, constant temperature and cooling curves to meet diversified process requirements such as annealing, curing, drying and degumming for different materials.

Adopting high-efficiency stainless steel heating tubes as heating elements, the furnace features high thermal efficiency, low thermal inertia and fast heating speed. It quickly reaches a constant temperature state without long preheating, greatly shortening the production cycle. Equipped with over-temperature alarm, overload protection and multiple safety interlock devices, it monitors the internal temperature and operating status in real time and automatically powers off and alarms in case of abnormalities, eliminating potential safety hazards and ensuring stable and safe production.

In addition, the trolley and furnace door adopt electric drive design with high automation and labor-saving operation, effectively reducing labor intensity. The excellent furnace body sealing performance effectively locks internal heat to further enhance thermal insulation and energy-saving effects, while reducing heat loss and dust ingress to maintain a clean working environment inside the furnace.

Product Parameters

I. Basic Equipment Information

• Equipment Name: Hot Air Car Furnace

• Model: HRF1350-06

II. Technical Specifications and Basic Configuration

1. Temperature Performance

   • Rated temperature: 600°C, with a maximum working temperature of 650°C, meeting the requirements of most medium-to-high-temperature heat treatment processes.

   • During a 1-hour isothermal test at 600°C (empty furnace), the temperature uniformity within the furnace was ±5°C, indicating excellent temperature distribution consistency, which helps improve product quality.

   • The maximum heating rate is 5°C/min. Users can customize heating curves based on process requirements, but exceeding this limit is not recommended to avoid affecting heating element lifespan or product performance.

   • The furnace chamber uses air as the working atmosphere, eliminating the need for additional protective gases, making it suitable for conventional heat treatment processes.

2. Control and Monitoring

   • Equipped with 2 temperature control points for precise regulation of the working zone temperature, ensuring stability within the set range.

   • Features 2 temperature measurement points for real-time monitoring of the heating chamber temperature, facilitating process control and data recording.

   • Uses K-type thermocouples as temperature sensors, known for their wide measurement range, stability, and fast response, making them ideal for high-temperature applications.

3. Furnace Chamber and Heating System

   • Effective chamber dimensions: 750mm (W) × 2000mm (D) × 900mm (H), capable of accommodating large batches of materials.

   • The chamber is constructed from SUS310S stainless steel, offering excellent high-temperature resistance, oxidation resistance, and corrosion resistance, suitable for prolonged high-temperature operation.

   • Heating elements consist of stainless steel heating tubes, featuring high thermal efficiency, low thermal inertia, and long service life, making them a common choice for high-temperature heating.

   • Maximum heating power: 90 kW, enabling rapid heating for efficient production. In standby mode, power consumption can be maintained below 45 kW, demonstrating energy-saving performance.

   • Surface temperature rise ≤35°C, indicating superior insulation that ensures operator safety and minimizes heat loss to the environment.

4. Loading and Material Handling

   • Uses SUS310S stainless steel racks arranged in a 3-layer × 3-column layout. Each layer can hold trays containing crucibles, with detachable tray designs for easy loading and cleaning.

   • Maximum load per rack layer: 40 kg. Overloading is prohibited to ensure temperature uniformity and structural safety.

   • Users must provide their own crucibles (specification: φ400 × 200 mm, cylindrical), suitable for heat treatment processes in ceramics, powder metallurgy, or related industries.

5. Program Control and Safety Protection

   • Supports 20-step program control, allowing users to preset multi-stage temperature, time, and process parameters for complex heating, holding, and cooling processes.

   • Includes multiple alarm protections: overtemperature, thermocouple failure, low air pressure, low water pressure, etc. All anomalies trigger audible and visual alarms to prompt timely intervention, ensuring equipment and operator safety.

   • Fan overcurrent protection prevents motor damage due to excessive load.

   • Complies with surface temperature rise ≤35°C requirements, maintaining safe exterior temperatures and reducing heat dissipation hazards.

6. Air Circulation System

   • Equipped with a dual-circulation fan system, with a total air circulation range of (5000-6800 m³/h) × 2. This dual-fan configuration significantly improves temperature uniformity and heat exchange efficiency, ensuring consistent material heating.

III. Normal Operating Conditions

To ensure safe, stable, and long-term efficient operation of the HRF1350-06 Hot Air Car Furnace, the following environmental, power, and auxiliary system requirements must be met:

1. Environmental Conditions

   • Ambient temperature: 0-40°C, relative humidity ≤80% RH. Avoid corrosive gases or strong airflows to prevent impacts on furnace temperature fields and component lifespan.

2. Air Supply (Intake)

   • Requires dry, clean, oil-free compressed air at 0.2-0.4 MPa, with consumption of 15-30 m³/h (varies by operating state).

   • Air quality directly affects furnace atmosphere and component longevity. Recommend installing filters and dryers for air treatment.

3. Cooling Water Requirements

   • For water-cooled components (e.g., electrical cabinet or specific heating elements), use clean, non-corrosive water at ≤23°C, 0.2-0.4 MPa pressure, and a flow rate of 6-18 L/min.

   • Adjust and maintain the water circulation system as needed.

4. Ventilation System

   • Exhaust must be non-contact connected to a user-provided extraction system (e.g., ducts or fume hoods) with capacity >40 m³/h to expel fumes, hot air, or volatiles, ensuring a safe workshop environment.

5. Electrical Requirements

   • Three-phase five-wire power supply: three live wires (yellow, green, red), one neutral (blue), one ground (yellow-green). Voltage: 380V (main)/220V (auxiliary), 50 Hz.

   • Total power capacity >130 kVA to ensure stable current during heating and prevent voltage fluctuations affecting temperature control or equipment lifespan.

   • Wiring must comply with standards, especially ensuring reliable grounding for operator and equipment safety.

6. Installation Site Requirements

   • Equipment dimensions: 2100mm (W) × 3600mm (D) × 2100mm (H) (excluding extended rails). Required installation space: 3000mm (W) × 6500mm (D) × 3500mm (H).

   • Minimum floor area >25 m² to allow adequate space for operation, maintenance, and safety access.

   • Floor must be level, sturdy, vibration-free, and support >500 kg/m² to bear equipment and car load.

Hefei Chitherm Equipment Co., Ltd. is a professional enterprise engaged in the research and development, design, manufacturing, sales, maintenance and service of high, medium and low temperature industrial furnaces and experimental furnaces.

Our products include Bell Furnaces, Box Furnaces, Hot Air Dryer, Tube Furnaces, Vacuum Furnaces, Trolley Furnaces, and Rotary Furnaces. All of which are widely used in scientific research and experimentation in advanced ceramics, additive manufacturing, powder metallurgy, new energy and other fields. Suitable for the extrusion, sintering process of magnetic materials, honeycomb ceramics, alumina ceramics, zirconia ceramics, CIM/MIM, and positive and negative electrode materials of lithium batteries, as well as various other new materials such as pre-firing, extrusion, degreasing, firing, drying, co-firing, post-firing, soldering, curing, ceramic metallization, etc.

We insist responsible attitude towards customers and provide high-quality products and services. It is precisely because of the support, understanding, and trust of our customers and friends that our intelligent equipment manufacturing capabilities continue to improve. We are willing to work with customers to support the rapid development of electronis and advance materials all over the world.