How Threaded Rod Is Made——Threaded Rod Manufacturing Method

Threaded rods are commonly used fasteners, also known as studs, that have continuous external threads along their length. They are commonly used to fasten and join components in a variety of applications. There are two main threaded rod manufacturing processes: thread rolling or thread cutting. 

The process of manufacturing screw rods usually includes the following steps:

1. Material selection:

The first step in making a screw is choosing the right material. Selecting the appropriate threaded rod material depends on the requirements of the application, including load, environmental conditions, corrosion resistance, and economic factors.

01. Carbon steel:

Carbon steel threaded rods are the most common and affordable option. They usually use ordinary carbon steel, such as 1020, 1035, 1045, etc. These materials provide moderate strength and durability and are suitable for general mechanical applications.

02. Stainless steel:

Stainless steel threaded rods are corrosion-resistant and suitable for environments where resistance to oxidation and corrosion is required. Commonly used stainless steel grades include 304 and 316 grades, which perform well in humid, high-temperature or chemically aggressive environments.

03.Alloy steel:

Alloy steel threaded rods have higher strength and wear resistance due to the addition of other elements. This allows them to perform well under high pressure, high temperature and other harsh conditions.

04. Brass:

Brass threaded rods have excellent electrical and thermal conductivity and are also corrosion-resistant. This makes them useful in some electrical equipment and specific environments.

05.Aluminum alloy:

Aluminum alloy threaded rods are very lightweight and have certain corrosion resistance. They are often chosen in applications where weight reduction is required.

2. Bar manufacturing:

The raw material is processed through a rolling mill to form long straight bars of the required diameter. These rods are usually produced in standard lengths and the surface is cleaned and inspected for any defects.

3. Thread processing:

The rod is then threaded. There are two main methods of threading:

01.Thread cutting:

In this method, a cutting tool, such as a tap, is used to cut threads on the surface of the rod. Cutting tools remove material to form the thread profile. This method is suitable for small-scale production and custom threading.

02.Thread rolling:

Thread rolling is the more common method for large-scale production of screws. In this process, the rod is passed through a set of thread rolling dies that press the threads onto the surface of the rod. Thread rolling dies have a thread profile that is opposite to the required thread. The material on the rod flows and threads under high pressure, resulting in strong and precise threads.

4. Straightening and finishing:

After threading, threaded rods may go through a straightening process to ensure they are perfectly straight. The bars are then finished to achieve the required surface smoothness and dimensional accuracy

5. Cut to length:

Cut threaded rod to required length according to customer specifications or standard dimensions.

6. Inspection and Quality Control:

Finished threaded rod undergoes rigorous inspection and quality control to ensure it meets required dimensional tolerances and thread specifications. Check the threads for correct pitch, size and alignment.

7. Packaging and Distribution:

Once the threaded rods pass inspection, they are packaged and ready for distribution to customers. They are usually sold in bundles or spools based on length and quantity.

Advantages of thread rolling machine:

1. Excellent strength and durability:

Thread rolling machines produce threads of greater strength and durability than other thread forming methods. The rolling process displaces rather than removes material, resulting in improved fatigue resistance and a more reliable thread form.

2. Cost-effectiveness:

Thread rolling offers significant cost advantages over other methods such as thread cutting or grinding. The rolling process is faster, requires less energy, and produces minimal waste. Therefore, it can reduce production costs and improve overall efficiency.

3. Improved surface finish:

Thread rolling produces smoother, more precise threads for superior surface finish. This is especially important in applications where the threads must fit tightly or where aesthetics are important.

4. Extend tool life:

Unlike cutting or grinding methods, which subject the tool to severe wear, thread rolling places less stress on the tool. As a result, thread rolling tools last longer, reducing tool replacement costs and downtime.

5. Consistent thread quality:

Thread rolling machines provide highly consistent thread quality throughout the production process. The mechanical nature of the rolling process reduces the possibility of human error, resulting in uniform and high-quality threads every cycle.

How to order a suitable thread rolling machine?

Screws are available in various lengths, diameters and thread sizes to suit different applications. They are widely used as structural supports, fasteners and anchoring solutions in construction, manufacturing, automotive, plumbing, electrical, industrial and engineering projects.

The manufacturing process ensures that the screw meets industry standards for quality and performance, making it a reliable component in a variety of engineering and construction projects. If you have any questions about the thread rolling process, please feel free to contact us!

 If you are looking for such thread rolling machine, please contact us.

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