19.5m³ Large-Scale Car-Bottom Resistance Furnace

Overview

The GWDL-STCS large-scale car-bottom resistance furnace is engineered for heavy-duty industrial heat treatment of large castings, forgings, molds, and alloy steels. With a 19.5m³ chamber volume, 1200kW installed power, and 10-ton loading capacity, it provides strong production capability. Advanced hot-air circulation and 9-zone precision control ensure excellent temperature uniformity (±5℃), while the fully automated car-bottom system enhances operational efficiency and reduces labor intensity.

At GWDLTHERMO, we not only deliver advanced furnaces, but also provide customized heat treatment solutions tailored to each customer’s needs.

Advantages

1. Outstanding Uniformity – Forced hot-air circulation (4 fans) + 9-zone control keep chamber uniformity within ±5℃.
2. High Efficiency – 10-ton motorized car-bottom loading with limit switches reduces handling time and increases throughput.
3. Flexible Operation – Wide heating rate range (1℃/h to 20℃/min) supports both precision thermal cycles and rapid heating.
4. Energy Saving & Durable – Alumina fiber lining reduces heat loss, keeps outer shell <45℃, and extends furnace life.
5. Reliable Automation – Programmable PID control (30–50 steps), self-learning AI tuning, and dual-loop safety protection ensure stable and repeatable performance.

Key Features

• Chamber Volume: 19.5 m³, suitable for large workpieces & batch processing
• Working Temperature: 950–1050℃ (max. 1200℃)
• Installed Power: 1200kW, auto-adjustable for energy saving
• Loading Capacity: 10 tons, motorized car-bottom with variable speed control
• Temperature Uniformity: ±5℃ across the chamber (empty furnace)
• Temperature Control Accuracy: ±1℃ with intelligent integrated PID control
• Heating Rate: Adjustable, from 1℃/h for precision annealing to 20℃/min for fast heating
• Heating Elements: High-temperature alloy resistance strips with molybdenum, up to 1380℃ surface temperature
• Hot-Air Circulation: 4 high-temp fans (310S stainless steel, water-cooled, variable frequency drive) ensure forced convection
• Multi-Zone Control: 9 independent zones (sides, bottom, door, rear wall) for precise thermal balance
• Automation: Electric car-bottom & lifting door, linked control, programmable heating curves (30–50 segments)

Technical Specifications

• Model: GWL-STCS
• Chamber Dimensions: L13000 × W1500 × H1000 mm
• Volume: 19.5 m³
• Power Supply: AC 380V, 3-phase
• Installed Power: 1200kW
• Working Temperature: 950–1050℃ (max. 1200℃)
• Thermocouple Type: K-type
• Temperature Uniformity: ±5℃ (empty furnace)
• Control Accuracy: ±1℃
• Heating Rate: 1℃/h to 20℃/min adjustable
• Car-Bottom Load Capacity: 10 tons
• Refractory: Alumina fiber modules, low thermal mass, resistant to thermal shock
• Insulation: High-purity alumina fiber (>52% Al₂O₃)
• Shell Temperature: <45℃ during continuous operation
• Control System: Closed-loop thyristor module, phase-angle triggering, dual-loop protection
• Safety Features: Over-temp, phase loss, overcurrent, short circuit, power feedback, and soft start