Small Coil Round Hole Soft Black Annealed Iron Wire 16gauge 18gauge
Per Coil Tying Wire:
18 GAUGE Black Tie Wire and 16 GAUGE INDUSTRIAL WIRE - Made from
industrial grade wire, Wire Tie Rolls are made with excellent
bendability and resistant to breakage.
The black annealed process involves heating the wire to a specific
temperature and then slowly cooling it. This process relieves
internal stresses, improves the wire's ductility, and enhances its
work ability. The black color of the wire is typically achieved by
immersing it in a blackening solution or coating it with a
protective layer that provides corrosion resistance and a visually
appealing finish.
| Product Name | Small Coil Black Iron Wire |
| Size | 16 Gauge 18 Gauge As Required |
| Wide in Width | Coil ID: 10cm-12cm |
| Surface Treatment | Black |
| Metal Wire Drawing | Cold Drawing |
| Status | Soft State |
| Thickness | Metal Filament |
| Packing Way | As Required |
| Treatment | Annealed |
| Tensile Strength | Soft 350-390MPa |
| Surface | Oiled or No Oiled |
| Usage | Binding |
| Average Lead Time | One Month |
| Transport Package | 1kg/Coil, 20coils/Carton Inside with Plastic Bag |
| Production Capacity | 2000mts/Month |
How is Black Annealed Wire Made?
Step 1: Raw Material Preparation
The foundation of black annealed wire begins with the selection of
high-quality low-carbon steel wire rods. These wire rods, typically
containing less than 0.25% carbon, serve as the building blocks for
the production process. They are carefully inspected and cleaned to
remove any impurities or surface contaminants.
Step 2: Wire Drawing
The selected wire rods are then subjected to a wire drawing
process. This entails passing the wire rods through a series of
dies with progressively smaller openings. By doing so, the diameter
of the wire is reduced while its length is increased. The wire
drawing process not only shapes the wire but also enhances its
tensile strength.
Step 3: Annealing
Following wire drawing, the obtained wire undergoes an annealing
process. Annealing involves heating the wire to a specific
temperature, typically between 700-900°C, and holding it at that
temperature for a predetermined duration. This heat treatment
relieves internal stresses formed during wire drawing and enhances
the wire's malleability and work ability. The wire is then
gradually cooled to room temperature, allowing it to regain its
structural stability.
Step 4: Blackening
Once annealing is complete, the wire proceeds to the blackening
stage. During this process, the wire is immersed in a blackening
solution or coated with an appropriate protective layer. The
blackening solution may contain oils, lubricants, or other
substances that provide a dark or black finish to the wire's
surface. This not only enhances its aesthetic appeal but also adds
a layer of protection against corrosion.
Step 5: Cooling, Cleaning, and Drying
After blackening, the wire is cooled down, often through forced
cooling methods such as air or water cooling. This ensures that the
wire achieves the desired strength and hardness. Subsequently, the
wire undergoes a cleaning process to remove any residual blackening
solution or contaminants that may have accumulated during the
earlier stages. Finally, the wire is thoroughly dried to eliminate
excess moisture, making it suitable for further processing and
packaging.
Step 6: Spooling and Packaging
The black annealed wire is then spooled onto various-sized spools
or wound into coils, depending on the intended application and
customer requirements. The wire is precisely wound to ensure its
integrity and ease of unwinding during usage. Once spooled, the
wire is carefully packaged, labeled, and prepared for distribution
to manufacturing plants, construction sites, retail stores, or
other end-users.
It is important to note that the specific details of the
manufacturing process may vary depending on the particular
machinery and techniques employed by different manufacturers.
