1200°C High Temperature Lifting Furnace with Hot Air Circulation

1200°C High Temperature Lifting Furnace

This 1200°C elevator-type Lifting Furnace features a hydraulic or electric lifting system for the loading platform, utilizes high-temperature alloy resistance elements, and is equipped with a high-temperature hot-air circulation system. It has a maximum operating temperature of 1200°C, an effective heating zone of 2000 × 1000 × 1200 mm, and a loading platform capacity of 2 tons. It is suitable for high-temperature heat treatment and controlled-atmosphere processing of large-scale workpieces.

Product Features

1. Extra-Large Effective Heating Zone with 2-Ton Hydraulic Lifting Loading Platform

The effective heating zone measures 2000 × 1000 × 1200 mm (L × W × H), with a designed power of approximately 150 kW. The loading platform features a hydraulic lifting mechanism and a 2-ton load capacity, making it suitable for the heat treatment of large workpieces or high-volume batches of materials. The platform utilizes an electromechanical lifting system. The interface between the furnace opening and the loading platform employs a stepped, interlocking refractory seal; the refractory edges are angled to allow for a wider opening, while the angles gradually narrow upon closing to create a self-locking, airtight seal.

2. High-Temperature Circulation Fan with Perimeter and Bottom Heating; Furnace Temperature Uniformity of ±3°C

Equipped with a 310S high-temperature circulation fan (with adjustable frequency control) to force the circulation of hot air within the furnace. Heating elements consist of high-temperature alloy resistance strips, evenly distributed along the perimeter and bottom of the furnace chamber. A dual-zone temperature control system—covering both the perimeter and the bottom—ensures a control precision of ±1°C and a furnace temperature uniformity of ±3°C.

3. Integrated Exhaust Gas Purification Furnace with Preheated Air Intake

An exhaust gas purification furnace is installed horizontally atop the furnace chamber. It features a processing capacity of 160 m³/h, independent temperature control, and automated PLC-driven activation and deactivation. Ten air inlets are positioned along the lower sides of the furnace chamber; the incoming air is preheated by the exhaust gas purification furnace before entering the main chamber, effectively utilizing waste heat and reducing energy consumption.

4. Fully Automated PLC-Integrated Control

A PLC system automatically manages the heating process based on a pre-set temperature curve, controlling parameters such as temperature, circulation fan speed, the operation of the purification furnace, and the opening/closing of air inlets. This enables intelligent, fully automated coordination between the temperature profile, fans, purification furnace, and air inlets, requiring no manual intervention.

5. Split-Design Structure: Separate Control System and Furnace Chamber

The furnace features a split-design, separating the control system from the furnace chamber. The furnace unit measures 3500 × 2000 × 4200 mm, with a rail length of 2500 mm. The furnace lining is constructed from vacuum-formed, high-purity, lightweight alumina material, utilizing vacuum-formed, high-purity alumina fiber modules. For areas prone to impact during the loading and unloading of materials—specifically the furnace opening and the furnace floor—lightweight hollow-sphere alumina boards are used.

Maximum Operating Temperature	1200°C
Long-Term Operating Temperature	1150°C
Control Range	80 to 1200°C
Effective Heating Zone Dimensions	Length × Width × Height: 2000 × 1000 × 1200 mm
Furnace Body External Dimensions	3500 × 2000 × 4200 mm, rail length 2500 mm
Power Supply AC	380V
Designed Power Approx.	150KW
Heating Element Installation Position	Evenly distributed around the furnace chamber + bottom
Temperature Control Accuracy	±1°C
High-Temperature Stirring Fan	310S, frequency-conversion adjustable
Furnace Temperature Uniformity	±3°C
Gas Inlets	10 gas inlets are provided at the lower part on both sides of the furnace chamber. The intake gas is preheated: the atmosphere preheated through the tail gas purification furnace then enters the furnace chamber
Tail Gas Purification Furnace	The tail gas purification furnace is located at the top of the furnace chamber and installed horizontally. Processing capacity 160 cubic meters per hour, independently temperature-controlled. Opening and closing are automatically executed by PLC
Heating Rate	Heating rate freely adjustable; adjustment range: fastest heating rate 20°C per minute (non-linear), slowest heating rate 1°C per hour (1°C/h)
Temperature Measuring Element	Thermocouple graduation K, measuring range 0–1320°C
Dual Temperature Control	Adopts surrounding temperature control + bottom temperature control
Heating Elements	High-temperature alloy resistance strips are used around the furnace chamber and at the bottom
Furnace Body	The furnace body is machined with CNC machine tools and manufactured through polishing, grinding, acid washing, phosphating, plastic powder spraying, high-temperature baking, etc. It features a two-tone color scheme, a novel and aesthetically pleasing appearance, and advantages such as oxidation resistance, acid and alkali resistance, corrosion resistance, high temperature resistance, and easy cleaning
Furnace Body Structure	The electric furnace body adopts an internationally advanced air-cooled double-layer structure. An effective air-cooled guide baffle enables overall cold air circulation in the furnace shell, ultimately cooling the heating element conductive plates before discharging out of the furnace body, avoiding high-temperature oxidation of the heating element conductive plates; ensuring a good working environment
Loading Platform Opening Method	The loading platform adopts a hydraulic lifting structure
Refractory Fit between Furnace Opening and Loading Platform	The refractory fit between the furnace opening and the loading platform adopts a stepped cross-sealing design. The refractory has angles on both upper and lower parts. The opening angle of the loading platform increases, and gradually decreases as the loading platform closes
Loading Platform Load Capacity	2 tons
Loading Platform	Electric mechanical lifting
Refractory Materials	Vacuum-formed high-purity alumina fiber lightweight folded blocks. Positions prone to collision during loading and unloading (furnace opening, furnace bottom) adopt lightweight hollow ball alumina plates, which have high operating temperature, small heat storage, resistance to rapid heating and cooling, no cracking, no slag falling, and good insulation performance (energy-saving effect is more than 80% that of old-style electric furnaces)
Insulation Materials	Three-layer insulation is adopted, namely: high-alumina cotton, alumina blanket, and alumina fiberboard. The energy-saving effect is more than 80% that of old-style electric furnaces
Furnace Body Shell Temperature	For long-term continuous operation without shutdown, the shell temperature is less than 45°C
Protection	An integrated modular control unit is adopted for accurate control precision, and dual-loop control and dual-loop protection are designed, featuring protection against overshoot, over-regulation, under-regulation, broken thermocouple, phase loss, overvoltage, overcurrent, overtemperature, current feedback, soft start, etc.
Control	Closed-loop technology is adopted for thyristor module trigger control, with phase-shift triggering or zero-crossing triggering. Output voltage, current, or power can be continuously adjusted, featuring constant voltage, constant current, or constant power characteristics. The current loop is the inner loop, and the voltage loop is the outer loop. When a load is suddenly applied or the load current exceeds the current limiting value, the output current of the voltage regulator is limited within the rated current range to ensure normal operation of the output and the voltage regulator. At the same time, the voltage loop also participates in regulation, so that the output current of the voltage regulator is limited within the rated current range, maintaining constant output current and voltage under the premise of sufficient adjustment margin. This protects the heating elements from impact of excessive current and voltage, achieving safe and reliable control effects and control precision
Display Parameters	Temperature, temperature segment number, segment time, remaining time, output power percentage, voltage, current, etc.
Buttons	Imported buttons are adopted, with a service life of more than 100,000 times, and with LED indicators
Temperature Curve Setting	Adopts an intelligent temperature controller, equipped with multiple adjustment modes such as standard PID, artificial intelligence adjustment APID, or MPT, with self-tuning and self-learning functions, and excellent control characteristics of no overshoot and no undershoot. It has a 30-segment program control function, can realize heating and cooling control at any slope, has programmable/operable commands such as jump (cycle), run, pause, and stop, and allows the program to be modified at any time during controlled operation; it adopts an artificial intelligence adjustment algorithm with curve fitting function, which can obtain smooth and flat curve control effects (see the electric furnace video for details)
Multiple Curve Input	30-segment program control function, can be input and set as: one curve with 30 segments, two curves with 14 segments each, three curves with 9 segments each, five curves with 5 segments each; multiple curves can be input at the same time and can be called arbitrarily during use
PLC	Temperature control, high-temperature fan speed, purification furnace opening/closing, gas inlet opening/closing, etc. are all freely selected to close and open by the PLC according to the heating curve
Random Accessories	Two heating elements, two sets of element tools, one pair of crucible tongs, one pair of high-temperature gloves
Warranty Scope and Period	The electric furnace is provided with free warranty for one year; heating elements are not covered by warranty (free replacement for natural damage within three months)

Application Areas

• Heat Treatment of Large Workpieces: Suitable for processes such as annealing, normalizing, tempering, and stress-relief annealing of large castings, forgings, welded structural components, molds, and more.
• Sintering and Debinding of Ceramic Materials: Suitable for the large-scale sintering and debinding of advanced ceramic materials.
• Sintering of Powder Metallurgy Products: Suitable for the sintering and forming of metal and alloy powders.
• R&D and Pilot Production of New Materials: Suitable for the research, development, and pilot-scale production of specialized materials, composite materials, and other novel substances.

Company Profile

A professional enterprise specializing in heat treatment technology services and the R&D, manufacturing, and sales of high-temperature electric furnaces.

The company focuses on developing high-temperature electric furnaces covering a full temperature range of -100℃ to 2600℃. Its products include experimental electric furnaces, vacuum atmosphere furnaces, industrial kilns, and medium-frequency induction heating equipment. Main products include box furnaces, tube furnaces, lifting furnaces, pusher kilns, bogie furnaces, rotary kilns, tunnel kilns, and various specialized medium-frequency furnaces.

The company adheres to technological innovation and has passed ISO9001 and EU CE certifications. It owns 21 registered trademarks, 29 patents, and 27 software copyrights.

Payment Methods

TT

Shipment Methods

The electric furnace is packaged in three layers: first wrapped in foam paper, then wrapped in plastic film, and finally packed in a wooden crate.

Frequently Asked Questions (FAQ)

1. What are the maximum temperature and the effective heating zone dimensions for this elevator-type furnace?

The maximum operating temperature is 1200°C, with a long-term operating temperature of 1150°C; the control range is 80–1200°C. The effective heating zone measures 2000 mm (length) × 1000 mm (width) × 1200 mm (height).

2. What is the maximum load capacity of the loading platform?

The loading platform is designed for a load capacity of 2 tons. It features an elevator-style (lifting) mechanism, facilitating the loading and unloading of large or heavy workpieces into and out of the furnace chamber.

3. What is the function of the hot-air circulation/stirring system?

The equipment is equipped with a 310S high-temperature circulation fan with variable-frequency speed control. This promotes the circulation of high-temperature gases within the furnace chamber, working in tandem with heating elements located on the sides and bottom, as well as zoned temperature control.

4. Does the equipment include atmosphere control and exhaust gas treatment capabilities?

Yes. There are 10 gas inlets located along the lower sides of the furnace chamber, which include a gas preheating feature. Additionally, the top of the furnace is equipped with an exhaust gas purification unit (with a processing capacity of 160 m³/h) that features independent temperature control.

5. What functions can be controlled by the PLC?

The PLC enables integrated control over temperature, the speed of the high-temperature circulation fan, the exhaust gas purification unit, and the opening/closing of gas inlets—all based on a pre-set heating curve. It supports 30-segment programmed temperature profiles, enhancing the level of automation for complex heat treatment processes.