Overview
The HTF4572-0611NH type four-tube annealing furnace is suitable for the annealing process of metal wires fired at 1100°C and below; it adopts advanced temperature control technology to ensure the accuracy of temperature control; it utilizes mature furnace body design technology to ensure the uniformity of furnace temperature.

Performance Parameters
Rated temperature: 1100°C
Maximum temperature: 1150°C
Furnace tube size: Φ45 (OD) mm × 5mm × 7200mm (L) × 4, 310S material
Heating zone length: 6000mm
Number of temperature zones: 6
Temperature control accuracy: ±1°C
Temperature control method: Each temperature zone uses a Yamatake temperature controller from Japan, with adjustable heating rate
Heating method: Silicon carbide rods for upper and lower heating
Furnace atmosphere: Nitrogen-hydrogen mixed atmosphere
Cooling method: Water cooling

Equipment Requirements
Design power: 90kW
Insulation power: ≤45kW
Power supply: 380V±10%, 50Hz, 3-phase 5-wire

Heating and Insulation Characteristics
Heating element: Silicon carbide rods

Control Characteristics
Control method: Imported single-loop intelligent temperature controller, PID parameters self-tuning
Control temperature zones: 3 sets of far-infrared FEC heaters to ensure uniform heating
Alarm protection: Sound and light alarm protection for thermocouple break, overtemperature, low air pressure, low water pressure, etc.
Surface temperature rise: ≤35°C

Furnace Layout
Transition cooling zone: 1, length about 7200mm, requires cooling water
Constant temperature zone: 6, length about 6000mm, temperature setting range RT~1100°C

Atmosphere System
Working atmosphere: High-purity nitrogen or ammonia decomposition gas, inlet pressure 0.1~0.3Mpa, flow rate 3~6m3/h;
Control atmosphere: 4 paths, controlled by glass rotor flow meters.

Cooling System
Workpiece cooling adopts a water transition cooling system to quickly reduce the temperature of the workpiece and furnace mouth;
Cooling device-Industrial water chiller

Equipment Conditions
Input power: 380V±10%, 50Hz, 3-phase 5-wire
Equipment weight: Approximately 4500kg
Ground load-bearing: 500kg/m2
Usage environment: Flat ground, indoor environment without significant air disturbance, no corrosive gases, no significant vibration; ambient temperature 0~40°C, ambient humidity 10%~85%RH.
Ventilation and exhaust: Good ventilation around the furnace body, ambient temperature ≤50°C, ambient humidity 10~85%RH.