IPSEN rotary hearth furnace

IPSEN QDGs 350-100-3x4x16

IPSEN Rotary Hearth Furnace – Complete Technical Data & Description

Specifically, this is a gas-fired rotary hearth furnace for carburizing and hardening steel components.

General Information
Manufacturer: Ipsen
System Type: Rotary Hearth Furnace
Furnace Model / Designation: QDGs 300-75-2 × 3 × 15
Year of Manufacture: 2008
Availability: From Q1–Q2 / 2026
Condition: Previously in operation, annual VI inspections conducted

Process / Application
Heat Treatment Processes:
- Carburizing
- Re-austenitizing
Operating Temperature: 840 – 930 °C
Maximum Operating Temperature: 1000 °C
Carburized Case Depth:
0.1 – 0.25 mm at 610 HV

Workpiece Data
Maximum Workpiece Weight: 4.7 kg
Maximum Workpiece Diameter: 260 mm

Furnace Structure / Capacity
Ceramic tier construction
Number of Tiers: 3
Positions per Tier: 15
Workpieces per Position: 2
➡ Total Capacity: 3 × 15 × 2 = 90 workpieces per cycle

Media & Connection Data
Electrical Connection Data
Rated Voltage: 400 V / 3/N/PE / 50 Hz
Fuse Protection: 48 A
Installed Power: 33 kVA
Motor Drives – Consumption: 11.8 kW

Heating – Natural Gas
Calorific Value: Hu = 10 kWh/Nm³
Gas Pressure: 100 mbar
Radiant Tubes: 4 units
Connection Value: 19 m³/h
Reference Consumption:
Start-up Phase: 282 kWh
Idle (Furnace closed): approx. 8.4 m³/h

Burners
Gas Type: Natural Gas
Connection Value: 0.64 m³/h
Consumption: approx. 0.32 m³/h

Flame Curtain (Infeed)
Gbedpex Th Aaofx Abxog
Gas Type: Natural Gas
Connection Value: 2.2 m³/h
Consumption (cycle time approx. 2 min): 0.64 m³/h

Carrier Gas
Gas Type: Endogas
Gas Pressure: 50–100 mbar
Connection Value: 27.5 m³/h
Continuous Consumption: approx. 21.0 m³/h

Enrichment Gases
Propane
Connection Value: 1.37 m³/h
Continuous Consumption: approx. 0.74 m³/h

Ammonia
Connection Value: 1.58 m³/h
Continuous Consumption: 0.32 m³/h

Safety Gas
Gas Type: Nitrogen
Gas Pressure: 100–200 mbar
Connection Value (3 h purge duration): 11.6 m³/h
Purge Quantity per Purge: 35 m³

Cooling Water (Furnace + Door Seal)
Connection Value: 2.0 m³/h
Consumption: approx. 1.8 m³/h
Supply Temperature: 25 °C
Return Temperature: 45 °C
Supply Pressure: 2–3 bar
Return: non-pressurized

Compressed Air
Connection Value: 12 m³/h
Operating Pressure: 5 bar

Summary (short & marketing-compatible)
Classic Ipsen rotary hearth furnace for carburizing
90 parts per cycle
Up to 1000 °C
Fully equipped with gas and media technology
Industry-proven system, year of manufacture 2008
Ideal for gears, shafts, and rotationally symmetric components

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