Luoyang Anjing Intelligence Equipment are a global leader in high-temperature electric furnaces
1400°C Pit-Type Furnace (Independent Temperature Control Cabinet)
PRODUCT PARAMETERS
Description
1400°C Pit-Type Furnace (with Independent Temperature Control Cabinet)
The 1400°C pit-type furnace (with an independent temperature control cabinet) is a vertical resistance furnace designed for high-temperature heat treatment, sintering, calcination, and materials research. It features a maximum operating temperature of 1400°C and a long-term operating temperature of ≤1350°C. Heating is provided by 24 silicon carbide rods (25 mm in diameter) arranged in a crisscross pattern around the chamber to ensure superior temperature uniformity.
The unit is equipped with an independent temperature control cabinet and a 7-inch intelligent PID touchscreen control system that supports multi-stage programming for heating, holding, and cooling. It is suitable for high-temperature experimentation and production across sectors such as ceramics, metallurgy, electronics, advanced materials, and refractories.
Product Features
- Electric lift and automatic 90° lateral shift furnace door for convenient operation
The furnace door features an electric lift and automatic 90° lateral shift mechanism; upon opening, the door moves to the side, keeping the workspace clear and preventing high-temperature burns. It is equipped with a 310S alloy suspension fixture (the cantilever arm is to be provided by the customer).
- Highly efficient and uniform heating structure
Utilizes 24 silicon carbide heating elements arranged in a crisscross pattern around the chamber. A variable-spacing layout is employed—with denser spacing at the top—to effectively enhance temperature uniformity within the chamber, achieving a temperature uniformity of ±3°C.
- Intelligent temperature control system
Equipped with a 7-inch intelligent PID temperature control touchscreen (supporting both Chinese and English interfaces) featuring PID auto-tuning and over-temperature alarm functions. It can store 16 heating programs, with each program supporting up to 31 temperature curve segments, enabling automatic heating, holding, and shutdown.
- Deep pit-style chamber design, ideal for vertical heat treatment of long workpieces
With a chamber size of 350mm (diameter) × 550mm (height), the pit-style vertical structure is specifically designed for the vertical heat treatment of long workpieces, pipes, and rods. The furnace opening is fitted with interchangeable insulation plates of various diameters, allowing for flexible adjustment based on workpiece size to minimize heat loss.
- Double-layer air-cooled furnace body structure
The furnace body utilizes an advanced double-layer air-cooled structure. Cold air circulation lowers the furnace shell temperature while protecting the conductive contacts of the heating elements from high-temperature oxidation, ensuring the exterior shell temperature remains below 45°C during prolonged operation.
| Ftemperature | 1400°C |
| Power Supply AC | 380V |
| Power | 60KW |
| Furnace Chamber Dimensions (mm) | Diameter 350 – Height 550; the furnace opening is equipped with heat insulation plates of different diameters, and the specific dimensions shall be communicated with the customer |
| Maximum Operating Temperature | 1400°C |
| Long-Term Operating Temperature | ≤1350°C for long-term use |
| Control Range | 80 to 1400°C |
| Temperature Measuring Element | S-type thermocouple |
| Heating Element Installation Position | (24 silicon carbide rods with a diameter of 25 are used) Installed in a “well”-shaped staggered layout around the furnace, with unequal spacing between the upper and lower parts. The upper part is arranged more densely to effectively improve furnace temperature uniformity. |
| Hoisting | Equipped with 310S lifting gear; the cantilever arm is to be provided by the customer. |
| Temperature Control System | Equipped with a 7-inch large-screen touch-screen intelligent PID temperature controller, with Chinese-English switching, PID parameter auto-tuning function, and over-temperature alarm function. It can store 16 heating processes, and each process can be edited with temperature curves for 31 time segments; automatic heating, automatic heat preservation, and automatic stop, which can meet the requirements of continuous constant temperature and temperature control. The temperature controller has a built-in curve recording function, which can record the heating curve in real time and also view historical heating data. Data can be exported via a USB interface at any time, and heating data reports can be viewed and printed on a computer. Temperature control accuracy: ±1°C |
| Furnace Temperature Uniformity | ±3°C (depending on the furnace chamber size) |
| Heating Rate | The heating rate can be freely adjusted. Adjustment range: the fastest heating rate is 50°C per minute (non-linear), and the slowest heating rate is 1°C per hour (1°C/h) |
| Furnace Body Structure | The 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. This avoids high-temperature oxidation of the heating element conductive plates and ensures a good working environment |
| Furnace Door Opening Method | Electric rising, automatic translation 90° |
| Refractory Materials | The furnace lining is made of vacuum-formed high-purity alumina lightweight material |
| Insulation Materials | Three-layer insulation is adopted, namely: aluminum silicate fiberboard, alumina fiberboard, and alumina (polycrystalline) 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. |
| Random Accessories | 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 from the date of shipment; heating elements are not covered by warranty |
Application Areas
- Vertical heat treatment of long workpieces: Suitable for vertical heat treatment processes—such as annealing, normalizing, and tempering—for workpieces with high length-to-diameter ratios, including long shafts, long screws, and long pipes.
- Heat treatment of metal materials: Suitable for the heat treatment of metal materials such as alloy steels, tool steels, and die steels.
- Sintering of ceramic materials: Suitable for the sintering and heat treatment of ceramic materials such as alumina and zirconia.
- Powder metallurgy: Suitable for the sintering and forming of metal powders and alloy powders.
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)
- What is the maximum operating temperature of the 1400°C pit furnace?
The equipment has a maximum operating temperature of 1400°C and a long-term operating temperature of ≤1350°C; it is suitable for high-temperature sintering, calcination, and heat treatment processes.
- What heating method does the pit furnace use?
The equipment utilizes 24 silicon carbide heating elements (25mm in diameter) installed around the furnace chamber in an interlaced grid pattern to enhance heating efficiency and temperature uniformity.
- Does this pit furnace support programmable temperature control?
Yes. It is equipped with a 7-inch intelligent PID touchscreen control system capable of storing 16 heating programs. Each program supports up to 31 temperature control segments, enabling automatic heating, holding, and shutdown.
- What are the dimensions of the furnace chamber?
The standard chamber dimensions are 350mm in diameter and 550mm in height; the furnace opening can be fitted with insulation boards of various sizes to meet specific customer requirements.
- What safety protection features does the equipment have?
The equipment employs dual-circuit control and protection systems. It includes safeguards against over-temperature, over-current, over-voltage, phase loss, thermocouple breakage, overshoot, and undershoot, as well as features like current feedback and soft-start capabilities, ensuring safe operation.
