1250℃ Large Vacuum & Atmosphere Lifting Furnace is designed for industrial-scale processing with a super-large furnace chamber (2300×1000×1000 mm). It supports vacuum (-0.1 MPa) and multiple gas atmospheres (H₂, N₂, Ar, CO, O₂), combining high-efficiency hybrid heating with precision lifting platforms and intelligent control systems.
Key Features & Advantages:
1. Integrated Vacuum & Atmosphere Design
Multi-Process Capability: Supports vacuum annealing, brazing, sintering, powder metallurgy, and atmosphere heat treatment in one furnace.
High Sealing Performance: Furnace door with 3–4 step tapered soft seals and elastic high-temperature strips ensures gas tightness and vacuum integrity.
Overpressure Protection: Pressure sensors and electrical contacts automatically close inlet valves, open exhaust, and trigger alarms, enhancing safety during hydrogen or flammable gas use.
2. Large Chamber & Hybrid Heating
Furnace Size: 2300(L) ×1000(W) ×1000(H) mm, accommodating large workpieces and batch loads.
Heating Elements: Four-sided SiC rods plus bottom high-temperature resistance wire for uniform heating.
Temperature Uniformity: Bottom heating compensates for wide chamber lower temperature, achieving ±5℃ uniformity.
Fast & Efficient Heating: SiC rods provide rapid temperature rise and high thermal efficiency.
3. Precision Mechanical Motion & Sealing
Platform Movement: Electric screw drives for in/out movement; four-screw lifting for platform height adjustment.
Stable & Accurate: High-precision movement protects sealing system; speed adjustable for heavy loads.
Durable Seals: Soft seals combined with tapered steps absorb thermal expansion, extending lifespan and reducing maintenance.
4. Industrial-Grade Insulation & Water Cooling
Triple-Layer Insulation: Silica-alumina fiber board, alumina fiber board, and polycrystalline alumina fiber board for energy-saving performance (≥80% vs traditional furnaces).
Water Cooling System: Closed-loop water circulation for furnace top, door, mouth, and outer shell; reduces shell temperature ≤45℃.
Energy & Safety: Protects sealing materials, prevents overheating, and saves water.
5. Advanced Control & Remote Monitoring
10-inch Touchscreen PLC: Centralized control, multi-segment programmable curves (30–50 segments), history recording, and data export.
Closed-Loop SCR Control: Phase-shift or zero-cross triggering for constant voltage, current, or power; protects heating elements from overcurrent/overvoltage.
RS485 Interface: Remote monitoring up to 1200m; integrates with computers or MES systems for full automation and data management.
