Luoyang Anjing Intelligence Equipment are a global leader in high-temperature electric furnaces
Automatic Pressure-Controlled Vacuum Atmosphere Hot Press Furnace
PRODUCT PARAMETERS
Description
Automatic Constant Pressure Vacuum Atmosphere Hot Press Furnace
The Automatic Constant Pressure Vacuum Atmosphere Hot Press Furnace is a high-performance experimental and production equipment integrating high-temperature sintering, vacuum control, atmosphere protection, and automatic constant pressure hot pressing. The equipment’s maximum operating temperature can reach 1650℃, with a long-term stable operating temperature of 1600℃. It adopts a high-temperature U-shaped silicon molybdenum rod heating system and a double-layer air-cooled furnace body structure, combined with a high-precision hydraulic system, to achieve automatic control of temperature, pressure, vacuum, and atmosphere throughout the entire process.
The equipment supports automatic constant pressure and manual pressure adjustment. It can automatically adjust the pressure curve according to the sintering process, achieving a constant pressure accuracy of ±0.2T and a pressure adjustment accuracy of ±1‰.
Product Features
- Automatic Constant Pressure Control, Pressure Accuracy ±0.2T
Equipped with an electric precision hydraulic press, pressure range from 0.5-150 tons (customizable). Pressure is adjusted automatically/manually via digital display, supporting programmable pressure curve control with an accuracy of ±1‰. Equipped with imported solenoid valves, maintaining constant pressure with an accuracy of ±0.2T and excellent pressure holding performance. Pressure and temperature change data are digitally stored, enabling complete process data traceability.
- Dual-Use Vacuum and Atmosphere Functionality, Multi-Atmosphere Compatibility
Vacuum level up to -0.1Mpa (1Pa, -1Pa, 0.01Pa, etc., customizable), compatible with various gases such as hydrogen, nitrogen, argon, carbon monoxide, and oxygen. Free conversion between vacuum and atmosphere allows for meeting the stringent atmospheric requirements of ultra-high temperature alloys and special ceramics.
- U-Shaped Silicon Molybdenum Rod Heating for Ultra-High Temperature Performance
Uses high-temperature U-shaped silicon molybdenum rods as heating elements, installed around the furnace chamber to form a four-dimensional heating field. Type B thermocouples have a temperature measurement range of 0-1820℃, a temperature control accuracy of ±1℃, and a furnace temperature uniformity of ±1℃.
- Multi-layer sealing + pressure protection system
The furnace opening is equipped with a 3-4 layer tapered stepped soft-seal structure, with elastic high-temperature sealing strips arranged on the steps to effectively absorb thermal expansion. The pressure protection system receives signals from an electrical contact pressure gauge or pressure sensor, automatically closing the electromagnetic inlet valve, activating the electromagnetic exhaust valve, and triggering the alarm to prevent excessive pressure from causing danger.
| Temperature | 1600℃ |
| Maximum Operating Temperature | 1650℃ |
| Continuous Operating Temperature | 1600℃ |
| Control Range | 80 ~ 1600℃ |
| Temperature Sensor | Type B thermocouple, measuring range 0~1820℃ |
| Heating Element Installation Position | Surrounding the furnace chamber |
| Temperature Control Accuracy | ±1℃ (integrated circuit control, no overshoot) |
| Temperature Uniformity | ±1℃ (multi-point control available for larger chambers to improve uniformity) |
| Heating Rate | Max. 40℃/min, Min. 1℃/h, freely adjustable |
| Heating Elements | High-temperature U-shaped molybdenum disilicide (MoSi₂) rods |
| Furnace Body Construction | CNC machined; processes include polishing, grinding, pickling, phosphating, powder coating, and high-temperature baking; dual-color finish; features oxidation resistance, acid/alkali/corrosion/heat resistance, and easy cleaning |
| Furnace Body Structure | Air-cooled double-layer structure with effective air-guide baffles for full cold-air circulation; cools the heating element terminals to prevent high-temperature oxidation |
| Pressure | 0.5~150 tons (customizable) |
| Pressure Adjustment | Digital display automatic/manual adjustment, programmable curve, accuracy ±1‰ |
| Press | Electric precision hydraulic press |
| Pressure Display | Digital display, unit (N) |
| Pressure Holding / Constant Pressure | Imported solenoid valve, excellent pressure-holding performance, constant pressure ±0.2T |
| Pressure & Temperature Recording | Digital storage |
| Furnace Chamber Refractory | 1800-type vacuum-formed high-purity alumina lightweight material; high-wear/load-bearing areas (furnace mouth and bottom) use lightweight hollow-sphere alumina plates; high-temperature resistance, low heat storage, thermal shock resistance, no cracking, no spalling, excellent insulation (saves over 80% energy compared to traditional furnaces) |
| Insulation Material | Three-layer insulation: alumina fiber cotton + alumina fiber board + alumina polycrystalline fiber board; saves over 80% energy compared to traditional furnaces |
| Furnace Shell Temperature | < 45℃ during prolonged continuous operation |
| Protection Functions | Integrated modular control with dual-loop control and dual-loop protection; includes protection against overshoot, undershoot, deviation, thermocouple break, phase loss, overvoltage, overcurrent, overtemperature, current feedback, and soft-start |
| Water Cooling | Equipped with high-temperature circulating water pump, circulating water tank, and water radiator; cooling locations: furnace top, furnace mouth, furnace door, and shell |
| Atmosphere | Hydrogen, nitrogen, argon, carbon monoxide, oxygen, etc. |
| Vacuum Degree | -0.1MPa (customizable to 1Pa, -1Pa, -0.01Pa, etc.) |
| Pressure Protection | Signals from electric contact pressure gauge or pressure sensor drive the control module to close the solenoid inlet valve, open the solenoid exhaust valve and alarm, preventing overpressure hazards caused by closed or blocked exhaust ports |
| Control Method | Closed-loop SCR (thyristor) module control with phase-shift or zero-crossing triggering; continuously adjustable output voltage, current, or power; features constant voltage, constant current, or constant power characteristics. Inner current loop + outer voltage loop ensures output current is limited within rated range under sudden load changes or overcurrent conditions, protecting heating elements from excessive current/voltage surges for safe and reliable control |
| Displayed Parameters | Real-time temperature, segment number, segment time, remaining time, output power percentage, voltage, current, etc. |
| Push-Buttons | Imported push-buttons with LED indicators, service life > 100,000 cycles |
| Temperature Profile Programming | Intelligent controller supports standard PID, AI artificial intelligence PID (APID), or MPT regulation with self-tuning and self-learning functions; no overshoot or undershoot. Features 30-segment programmable control for arbitrary ramp/soak profiles; supports jump (loop), run, pause, and stop commands with on-the-fly program modification; curve-fitting algorithm ensures smooth and continuous temperature control |
| Multiple Curve Input | 30 segments (customizable to 50): 1 curve of 30(50) segments / 2 curves of 14(28) segments each / 3 curves of 9(15) segments each / 5 curves of 5(9) segments each; multiple curves can be stored simultaneously and called arbitrarily |
| Communication Interface | RS485, communication distance up to 1600m; allows remote computer control for start/pause/stop/curve setting/reading/parameter modification; PC display includes measured value, setpoint, output value, segment time, segment number, ramp curve, and power percentage curve; stored ramp curves can be recalled and modified; historical data/report logging interval adjustable (1s~1h) with long-term storage |
| Standard Accessories | Spare heating elements × 2, electrode holders × 2 sets, crucible tongs × 1 pair, heat-resistant gloves × 1 pair, DVD data disk × 1 |
| Warranty | 1 year for the furnace (heating elements excluded; naturally damaged within 3 months replaced free of charge) |
Application Areas
- Ultra-high Temperature Hard Alloy Hot Press Sintering: Suitable for ultra-high temperature and high pressure densification sintering of refractory metal materials such as tungsten carbide-based hard alloys, titanium alloys, and molybdenum alloys.
- Specialty Ceramics Hot Press Sintering: Suitable for hot pressing sintering of ultra-high temperature ceramic materials such as silicon nitride, silicon carbide, aluminum nitride, and zirconium oxide.
- Powder Metallurgy Product Densification: Suitable for high-temperature and high-pressure forming and sintering of metal powders, alloy powders, and composite powders.
- Functional Material Preparation: Suitable for hot pressing sintering of functional materials such as piezoelectric ceramics, transparent ceramics, and magnetic materials to obtain high-quality functional materials with fine grains and high density.
- Composite Material Preparation: Suitable for densification sintering of metal matrix composites and ceramic matrix composites, effectively reducing porosity and improving interfacial bonding strength.
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 difference between an automatic constant-pressure hot press furnace and a regular hot press furnace?
An automatic constant-pressure hot press furnace can automatically adjust and maintain a constant pressure according to the sintering process, eliminating the need for frequent manual adjustments. This effectively reduces pressure fluctuations caused by material shrinkage, improving sintering density and product consistency.
- What protective gases can be introduced?
The equipment supports various protective atmospheres, including nitrogen, argon, hydrogen, carbon monoxide, and oxygen. Customized gas path systems can be provided according to process requirements.
- What vacuum level can be achieved?
The standard equipment can achieve a vacuum level of -0.1 MPa, and higher vacuum levels such as 1 Pa, -1 Pa, and -0.01 Pa can be customized according to customer needs.
- Does it support synchronous programmable control of pressure and temperature?
Yes. The equipment can simultaneously perform temperature, pressure, and constant-pressure control, meeting the needs of complex hot pressing sintering processes and achieving fully automated operation.
- Does it support remote computer control and data storage?
Yes. The equipment is equipped with an RS485 communication interface as standard, which can be connected to a computer for remote operation, parameter setting, historical curve saving, process calling, and long-term storage of operating data, facilitating experimental management and quality traceability.
