Continuous Annealing Furnace For Steel Wire Technical Performance
1.Applicable: Annealing stainless steel or carbon steel wires with a diameter ≤6.5mm. Annealing is a metal heat treatment process designed to relieve stress, soften the material, and improve processing properties.
2.Number of Furnace Tubes: 8, 12, 16/20, 24, 28/32 tubes. Customizable for specialized applications.Furnace tubes act as channels through which the wires travel for heating. A larger number of tubes allows for a higher simultaneous wire throughput and production capacity, accommodating different factory production scales.
3.Heating Method: Electric or natural gas. Factories can flexibly choose based on their energy supply (e.g., electricity price, gas cost).
4.Heating Power: 20-960kW. Power determines heating speed and temperature control capabilities (different models/configurations correspond to different power levels).
5.Protective atmosphere (critical for oxidation prevention): Nitrogen or cracked gases of ammonia are introduced during annealing as a protective atmosphere to prevent oxidation and decarburization of the steel wire at high temperatures, ensuring product surface quality.
6.Automated control: Utilizing a PLC and touch screen system for automated control, precise settings for temperature, speed, atmosphere, and other parameters are possible, reducing manual errors and improving production stability.
Recommended Configuration
The recommended complete production line consists of 8 modules. The functions and process logic of each module are as follows:
| De-coiler | Unwind the coiled steel wire and feed it into the starting point of the production line. |
| Washing machine | Remove oil, dirt and impurities from the surface of steel wire to avoid polluting the heating furnace or affecting product quality. |
| Preheating section | Preheat the steel wire in advance to reduce the temperature abrupt change in the "heating section", make the heating more uniform, and save energy simultaneously. |
| Heating section | Core module! Heat by electricity/gas to make the steel wire reach the annealing temperature (e.g., carbon steel is about 600 - 900℃) and keep it warm to change the internal structure. |
| Cooling section | Control the cooling rate (e.g., slow cooling to achieve spheroidizing annealing or fast cooling to adjust hardness) to determine the final mechanical properties of the steel wire. |
| Coiler | Re-coil the annealed steel wire into coils for subsequent processing (such as drawing, weaving) or storage. |
| Electrical control system | Automatically control the full-process parameters (temperature, speed, atmosphere, etc.) through PLC + touch screen. |
| Ammonia cracker | If "ammonia dissociated gas" is selected as the protective atmosphere, this equipment is needed to decompose liquid ammonia into H₂ + N₂ mixed gas. |
Product Feature
High Production Efficiency: The continuous processing structure enables in-line annealing of metal wire, ensuring uninterrupted production, making it suitable for large-scale industrial production.
Precise Temperature Control: Induction heating technology ensures uniform surface and internal temperature, reducing performance variations caused by uneven heating.
Stable Product Performance: Annealed steel wire achieves improved surface quality, significantly enhanced tensile strength, toughness, and dimensional stability.
Wide Application: Suitable for continuous annealing of a variety of materials, including low-carbon steel wire, medium-carbon steel wire, and stainless steel wire.
Application Of Continuous Annealing Of Steel Wire
Fastener Manufacturing: Used for pre-treating steel wire for bolts and nuts, improving cold heading performance and preventing breakage during forming.
Rebar Binding: Softened iron wire (low-carbon steel wire) is easily bendable, making it suitable for bundling rebar in construction.
Bridge/Curtain Wall Cables: Annealing of high-strength steel wire eliminates processing stress, enhancing long-term stability.
As an industrial furnace enterprise integrating desiqn and manufacturing,the company has been committed to building a world brand.The company has a strong R&Dand design capability,and the proportion of R&D personnel in the company's employeesis up to 15%.Joint development and promotion of atmosphere control technology and anti-corrosion materials have been carriedout with Fudan Universityin Shanghai.
Our address
Haiyan County, Zhejiang Province, China
Phone Number
+8615356839263
te@chtemake.com
FAQ
1. What is the difference between a annealing furnace and a batch annealing furnace?
Annealing furnaces are suitable for large-scale, long wire production, offering high efficiency and excellent surface quality. Batch annealing furnaces, on the other hand, are suitable for small-batch, high-variety processing, offering flexibility but lower efficiency.
2. Why is a protective atmosphere often used in continuous furnaces?
A protective atmosphere (such as a nitrogen or hydrogen mixture) prevents oxidation and decarburization on the metal surface, resulting in a bright finish, making it particularly suitable for bright annealing processes.
3. Can continuous annealing furnaces be customized?
Yes. Based on parameters such as production volume, material type, and process requirements, we can design custom continuous annealing furnaces with varying lengths, heating zones, and control systems.
4. What cooling methods are available for annealing furnaces?
Main methods include air cooling, water cooling, and forced air cooling. The choice of cooling method depends on the product specifications and annealing process requirements.
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