Black Annealed Binding Iron Wire Manufacturing Process

Iron Wire is widely used in various constructions for a range of purposes. It can be used to bind and secure small products together or provide support for large-scale structures especially for rebar tying wire. To cater to different requirements and limitations, manufacturers produce wire in different shapes, sizes, flexibilities, and formulations. One commonly available type is called black annealed wire.

Annealed wire, also known as annealed tie wire, is made from low-carbon steel that has undergone an annealing process. This process increases the wire's ductility and reduces its hardness. As a result, it possesses higher flexibility without compromising durability. In fact, annealed wire can even self-tie and self-lock. Various variations of annealed wire are available, each with its own unique characteristics suitable for different applications.

In this article, we offer a comprehensive overview of annealed wire. We will discuss what it is, how it's manufactured, the different types available, its performance, advantages ,and its typical industrial applications, and how to choose high-quality black annealed wire.

1. What is Black Annealed Rebar Tie Wire?

2. Types of Black Annealed Wire

3. How is Black Annealed Wire made?

4. Black Annealed  Wire specification

5. Packing of Black Annealed Wire

6. 5 Advantages of Black Annealed Wire

7. What is Black Annealed Wire used for?

8. Where to buy Black Annealed  Wire?

What is Black Annealed Rebar Tie Wire?

Black annealed wire refers to a type of steel wire that has undergone a specific heat treatment process called annealing and has a black or dark appearance. It is commonly made from low-carbon steel wire and is often used in various applications, including construction, binding, handicrafts, and general wire-based projects.

Types of Black Annealed Wire

Annealed wires are manufactured using various techniques, resulting in different variations. These variations include:

Black annealed wire: This type is named after its distinct black color, which is achieved by applying an anti-corrosive surface coating after the annealing process. It finds wide applications in industries and consumer settings, such as baling and handcrafting.Bright wire: Bright annealed wire has a smooth and shiny finish. It is commonly used for binding and tying purposes.

Annealed wire is available in both black and bright variations. It is offered in different gauges (wire diameters), forms (straight cut, loop, coiled, and U-type), and packaging options (merchant wire, box wire, and tie wire).

Merchant wire: Large coils of annealed wire wound onto a stand.

Box wire: Smaller and tighter coils of annealed wire, individually packed into boxes.

Tie wire: Annealed wire packaged as merchant wire or box wire, specifically designed for tying applications.

Black Annealed Twisted Wire:Black annealed twisted wire refers to a type of wire that has undergone an annealing process to achieve a black or darkened appearance and is further twisted to increase its strength and structural integrity.

How is Black Annealed Wire Made?

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 workability. 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.

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 (1300-1650°F), 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 workability. 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.

Black Annealed Wire Specifications

 Types of Wire Guage

Package of Black Annealed Wire

Inner with plastic film,outer with woven cloth or hessian cloth together.In coils of 0.8kg to 500kg.

SUNSHINE can also customize packaging according to customers' needs.

5 Advantages of Black Annealed Wire

Black annealed wire offers several advantages that make it a popular choice across various constructions. Here are some of its benefits:

1. A.Flexibility: Black annealed wire is highly flexible and easy to shape or bend according to the specific needs of a project. This flexibility allows for convenient handling, tying, and securing of objects, making it versatile for a wide range of applications.

2. B.Softness and Ductility: The annealing process gives black annealed wire a soft and ductile nature. This softness makes it easier to work with, reducing the risk of breakage or damage during bending or twisting. The ductility also enables the wire to withstand tension and stretching without snapping.

3. C.Uniform Coating: The black annealed wire has a uniform black coating, which not only provides a visually appealing appearance but also protects the wire from corrosion and rust. This coating helps to extend the lifespan of the wire, especially in outdoor or exposed environments.

4. D.Cost-Effective: Black annealed wire is often more affordable compared to other types of wire, making it a cost-effective option for both small-scale and large-scale projects. Its availability and affordability make it a popular choice in industries like construction, agriculture, and packaging.

5. E.Versatility: Black annealed wire can be used in a wide range of applications, including construction, agriculture, packaging, and crafts. Its versatility, combined with its other beneficial properties, makes it a reliable choice for different industries and purposes.

What is Black Annealed Wire used for?

Black annealed wire offers several benefits that make it a popular choice for various applications,such as flexibility,softness and ductility.Benefit from those advantages,annealed wire is employed for binding and tying purposes in a wide range of industries.

Binding: Black annealed wire is commonly used for binding materials in construction, such as rebar, mesh, and bundles of pipes or wires. It provides secure and tight fastening.

Construction reinforcement: It can be used to tie wires together in concrete construction, providing additional strength and stability.

Packaging: In some cases, black annealed wire is utilized for packaging purposes, such as tying boxes, bundles, or packages together to prevent them from opening or shifting during transportation.

Agriculture: It can be used in agricultural applications, including plant support, trellising, and securing vines or branches.

Where to buy High Quality Black Annealed Wire?

Black Annealed Wire has a wide range of applications and plays an important role in many industries such as agriculture and construction. So how to buy the best quality wire?Remember to compare prices, product specifications, and customer reviews before making a purchase.

If you are looking for a reliable supplier of hardware products and construction materials, SHIJIAZHUANG SUNSHINE IMP/EXP TRADE CO., LTD is here to meet your needs. We are based in Shijiazhuang City, Hebei Province, China, and have specialized in this industry for many years.