1100°C Open-Type Tubular Electric Furnace for Laboratory Thermal Processing

describe

The 1100°C open-type tubular electric furnace provides rapid heating, precise temperature control, and convenient tube access for laboratory thermal processing, material research, and heat treatment applications.

Product Features

Furnace body structure

• The furnace adopts an advanced air-cooled double-layer furnace body designed to enhance thermal efficiency, equipment durability, and operator safety. This internationally recognized structural design effectively isolates the high-temperature chamber from the outer shell, reducing external surface temperatures while ensuring stable operation during continuous high-temperature processing.
• An optimized air-cooling system with specially engineered guide baffles promotes uniform airflow throughout the furnace body. The guided circulation of cool air efficiently removes accumulated heat from critical internal components before it exits the furnace, maintaining a balanced thermal environment and preventing localized overheating.
• Before the cooling air is discharged, it flows across the conductive plates connected to the heating elements, significantly reducing their operating temperature. This cooling process minimizes high-temperature oxidation, extends the service life of conductive components, and improves the long-term reliability of the electrical heating system. The reduced thermal stress also lowers maintenance requirements and helps ensure consistent furnace performance over extended periods of operation.
• The double-layer air-cooled construction also contributes to a safer working environment by maintaining a lower furnace shell temperature, reducing the risk of accidental burns and improving workplace comfort. Combined with its efficient heat dissipation capability, the design supports energy-efficient operation while protecting key electrical and mechanical components.
• Overall, this advanced furnace body structure delivers superior cooling performance, enhanced equipment longevity, reliable heating stability, and improved operational safety, making it ideal for laboratory research, heat treatment, material testing, ceramic processing, and other precision high-temperature thermal applications.

Refractory materials

• The furnace lining is manufactured from vacuum-formed high-purity lightweight alumina insulation material, providing exceptional thermal insulation, structural stability, and long-term durability for demanding high-temperature applications. This advanced refractory material features low thermal mass, allowing the furnace to heat up quickly while minimizing heat storage and reducing energy consumption.
• To enhance mechanical strength in high-wear areas, lightweight hollow alumina plates are installed at the furnace opening and bottom, where frequent loading, unloading, and material handling occur. These reinforced components improve impact resistance and maintain structural integrity during continuous operation without compromising thermal performance.
• The high-purity alumina lining is designed to withstand elevated operating temperatures while offering excellent resistance to rapid heating and cooling cycles. Its superior thermal shock resistance effectively prevents cracking, deformation, and premature failure, ensuring reliable performance throughout long-term operation. Unlike conventional refractory materials, the lining does not produce slag, dust, or spalling, helping maintain a clean furnace chamber and reducing contamination of processed materials.
• Its outstanding insulation capability significantly reduces heat loss, resulting in faster temperature stabilization, improved heating efficiency, and lower external shell temperatures. Compared with traditional electric furnace insulation systems, this advanced lining design delivers energy savings exceeding 80%, substantially lowering operating costs while improving overall thermal efficiency.
• By combining high-temperature resistance, excellent thermal shock performance, long service life, and superior energy efficiency, the furnace lining provides reliable support for laboratory research, ceramic firing, powder metallurgy, heat treatment, advanced material development, and other precision high-temperature processing applications requiring stable and repeatable thermal performance.

control

• The furnace is equipped with an advanced closed-loop thyristor power control system that provides precise and reliable regulation of voltage, current, and power throughout the heating process. Using phase-angle triggering or zero-crossing triggering technology, the controller delivers continuously adjustable power output while supporting constant-voltage, constant-current, and constant-power operating modes. This intelligent regulation ensures stable energy delivery for a wide range of laboratory and industrial thermal applications.
• The system adopts a dual-loop control architecture with an inner current loop and an outer voltage loop, enabling rapid response to changing load conditions. When sudden load variations occur or the operating current exceeds the preset limit, the controller automatically restricts the output current to the rated operating range, preventing overload while maintaining stable furnace operation.
• At the same time, the voltage loop continuously coordinates with the current loop to optimize output performance. This collaborative control strategy maintains stable voltage and current within the allowable adjustment range, minimizing electrical fluctuations and ensuring consistent heating throughout the entire thermal cycle. The result is improved temperature stability, enhanced process repeatability, and greater heating accuracy.
• To maximize equipment reliability, the closed-loop system effectively suppresses excessive current and voltage surges that could damage heating elements or power components. This protection extends heating element service life, reduces maintenance costs, and enhances overall system safety during continuous operation.
• By combining intelligent power regulation, fast response, and comprehensive electrical protection, the system delivers highly accurate, energy-efficient, and dependable furnace performance for heat treatment, material research, ceramic processing, sintering, and other precision high-temperature applications.

Temperature profile setting

• The furnace is equipped with an intelligent temperature control system designed to deliver outstanding accuracy, stability, and flexibility for laboratory and industrial thermal processing. The controller supports multiple regulation modes, including standard PID, AI-based APID, and MPT algorithms, allowing users to select the most suitable control strategy for different materials and heating applications.
• With built-in self-tuning and self-learning functions, the controller automatically optimizes control parameters according to the furnace's operating conditions. This minimizes manual adjustments while ensuring highly stable temperature regulation with virtually no overshoot or undershoot. As a result, users benefit from improved process repeatability, greater product consistency, and enhanced heating efficiency.
• The system features 30-segment programmable temperature control, enabling users to create complex heating, holding, and cooling profiles with freely adjustable ramp rates. Arbitrary temperature rise and fall slopes can be programmed to meet demanding thermal process requirements, making the furnace suitable for advanced heat treatment, sintering, material research, and ceramic firing applications.
• In addition to multi-stage programming, the controller supports practical operating commands such as jump (loop), run, pause, and stop, allowing users to modify program parameters during operation without interrupting the heating cycle. This greatly improves operational flexibility and process efficiency.
• Powered by an AI-based curve-fitting algorithm, the system continuously optimizes temperature control to generate smooth, stable heating curves with minimal fluctuations. The combination of intelligent algorithms, programmable operation, and high-precision control ensures reliable thermal performance, exceptional process consistency, and long-term operational stability for demanding high-temperature laboratory and industrial applications.

Main component configuration list

Application areas

• Ideal for laboratory thermal processing, material characterization, catalyst research, and high-temperature scientific experiments.
• Widely used for ceramic firing, powder calcination, tube heat treatment, and advanced material development under controlled conditions.
• Suitable for universities, research institutes, and industrial laboratories performing sintering, annealing, and thermal analysis applications.

Why Choose Us

• Rapid heating with excellent temperature uniformity.
• Intelligent control ensures accurate thermal processing.
• Durable insulation reduces energy use and operating costs.

FAQ

Q1: What is the maximum operating temperature of the furnace?
A: The furnace operates up to 1100°C, making it suitable for laboratory heat treatment and material research applications.

Q2: Does the furnace support programmable temperature control?
A: Yes, it features a 30-segment programmable controller with adjustable heating and cooling profiles.

Q3: What tube materials are compatible with this furnace?
A: It supports quartz, alumina, and other compatible furnace tubes based on your process requirements.

Q4: How does the furnace maintain stable temperature control?
A: Intelligent PID, APID, and MPT control algorithms provide precise heating with minimal temperature fluctuations.

Q5: Is the furnace suitable for continuous laboratory operation?
A: Yes, its double-layer air-cooled structure and high-efficiency insulation ensure reliable long-term continuous operation.