Electric Holding Furnace for Continuous Annealing in Industrial
Production Process
1.Furnace Design
The entire equipment is primarily composed of a furnace chamber,
heating tubes, cooling section, external framework, atmosphere
control system, wire take-up mechanism, and electrical control
system.
2. Technical Specifications & Basic Configuration2.1 Rated Temperature: 1100°C
2.2 Maximum Temperature: 1150°C
2.3 Furnace Tube Dimensions: Φ45 (OD) mm * 5 mm * 7200 mm (L) * 4,
310S stainless steel
Cooling Section Dimensions: Φ45 (OD) mm * 5 mm * 7200 mm (L) * 4,
304 stainless steel
2.6 Maximum Heating Power: 90 kW
2.7 No-load Holding Power: ≤45 kW
2.8 Heating Zone Length: 6000 mm
2.9 Effective Heating Zone Length: ≥3000 mm
2.10 Temperature Uniformity: Within ±3°C in effective heating zone
2.11 Tube Spacing: 80 mm
2.12 Heating Elements: Silicon Carbide (SiC) Heating Rods
2.13 Heating Method: Top & Bottom Heating
2.14 Number of Temperature Zones: 6 zones
2.15 Temperature Control Points: 6 points
2.16 Thermocouple Type: Type N (NiCr-NiSi)
2.17 Temperature Control Stability: ±1°C, with PID parameter
self-tuning function
2.18 Process Atmosphere: Nitrogen/Hydrogen (N
2/H
2)
2.19 Gas Inlet: Location: Between high-temperature zone and cooling
section
2.20 Exhaust Outlet: Location: At furnace tube inlet end
2.21 Maximum Heating Rate: 10°C/min
2.22 Cooling Method: Circulating Water Cooling in cooling zone
2.23 Outlet Water Temperature: ≤30°C
2.24 Transition Platform: Length ≥3500 mm
2.25 Take-up Speed: 300-2750 mm/min
2.26 Surface Temperature Rise: ≤35°C
2.27 Alarm & Protection: Audible & visual alarms for
over-temperature, thermocouple breakage, low air pressure, low
water pressure, motor overload, etc.; over-temperature alarm with
heating cut-off protection
2.30 Overall Dimensions (Reference): 14850 * 950 * 1460 mm (L * W *
H), excluding transition platform and pay-off/take-up devices.
Actual dimensions subject to final product specifications.
3.Equipment Delivery Checklist| Table 1: Delivery Summary |
| Category | Description | Qty |
| Basic Components | Kiln Main Unit | | 1 set |
| Wire Take-up Machine | Four-axis Eight-spool | 1 set |
| Inspection Certificate | Certificates of conformance for major external components | 1 set |
| Technical documents | User Manual & Technical Documents for Major Purchased Components | 1 set |
| Critical Components | Silicon Carbide Heating Elements | | Complete set |
| Temperature Controller | Imported from Japan | 1 set |
| Thermocouples | | 6 units |
| Water Chiller | Model CA-05 | 1 unit |
| Spare Parts | Solid State Relay (SSR) | | 1 unit |
