The working principle of high-frequency pipe making machine roll set involves a series of stages that transform a flat strip or coil of metal into a finished pipe. Here's a step-by-step explanation of the working principle:

Uncoiling: 

The process begins with uncoiling a flat metal strip or coil from a coil holder. This strip typically consists of steel or another metal suitable for pipe manufacturing.

Forming: 

The metal strip is fed through a series of forming rolls within the roll set. These rolls gradually bend the strip into a cylindrical shape, with the edges meeting to form a longitudinal seam.

Welding: 

If the pipe being manufactured is a welded pipe, the longitudinal seam formed in the previous step needs to be welded. High-frequency induction welding is commonly used in this process. Welding rolls within the roll set ensure proper alignment and contact between the edges of the metal strip. An electric current is then passed through the edges, generating heat and welding them together.

Heating: 

In high-frequency pipe making machines, a high-frequency electric current is used to heat the metal strip before welding. This heat softens the metal, making it easier to form and ensuring a strong weld joint.

Sizing:

 After welding, the pipe passes through a series of sizing rolls within the roll set. These rolls help shape the pipe to its final dimensions, ensuring uniformity in diameter and thickness.

Cutting:

Once the pipe has been formed and sized, it is cut to the desired length. This can be done using various cutting methods, such as sawing or shearing, depending on the specific requirements of the application.

Finishing: 

Finally, the finished pipes may undergo additional finishing processes, such as straightening, end facing, or surface treatment, to meet the desired quality standards.

Throughout the entire process, the roll set plays a crucial role in guiding, shaping, welding, and sizing the metal strip to produce high-quality pipes efficiently and accurately. The precise design and alignment of the rolls within the roll set are essential for achieving consistent and reliable results in pipe manufacturing.

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