Purpose & Applications:
- Mainly used for annealing thin sheets and steel parts in a natural atmosphere.
- Applied to special steels, fine alloys, large fiber-reinforced resistance furnaces for bright annealing of strips and wires.
- Suitable for casting and forging of special steels, annealing of scrap silicon steel sheets, and sintering of metal or non-metal powder-pressed parts.
- Continuous bright annealing furnaces are used for copper tubes (or rods), steel pipes, aluminum tubes, or coils under a controlled atmosphere.
Features:
- Continuous Processing:
- Workpieces pass sequentially through preheating, heating, soaking, slow cooling, and cooling zones.
- No limitation on length.
- Stable Transport & Heating:
- Uses roller-based synchronous drive with variable frequency speed control.
- Smooth and reliable operation.
- Uniform Atmosphere & Temperature:
- Forced circulation of protective and thermal atmosphere ensures uniform heating.
- Temperature difference inside the furnace is controlled within 5 °C.
- Bright Surface Finish:
- Products retain bright surfaces without oxidation or decarburization.
- Suitable for further deep processing due to uniform hardness and surface quality.
- Heating & Cooling:
- Heating by electric or gas.
- Cooling zones designed for even cooling, including strong air-cooling sections.
- System Composition:
- Feed roller table, preheating and exchange chambers, heating furnace, slow cooling and cooling zones, transition zones, post-exchange chambers, roller discharge system.
- Controlled by computer and electrical control systems.
Summary: Hood-type annealing furnaces are ideal for bright annealing under protective atmosphere, offering uniform temperature, oxidation-free surfaces, and consistent material properties, suitable for both strips, wires, and powder-pressed components.