How does a high frequency tube mill work?

Q&A

1. How does a high frequency tube mill work?

   A high frequency tube mill works by utilizing high frequency induction welding to join steel coils and create steel tubes. Here is a detailed explanation:

   • Coil Uncoiling: Steel coils are loaded onto the decoiler, which uncoils the steel strip.
   • Straightening and End Shearing: The steel strip goes through a straightening machine to remove any bends or twists. It is then cut to the required length using an end shearing machine.
   • Forming: The straightened and cut steel strip is then fed into the forming section of the mill. Here, the strip is gradually shaped into a cylindrical tube using a series of rollers and forming stands.
   • Welding: Once the tube shape is achieved, high frequency induction welding is used to join the edges of the steel strip together. An induction coil generates an electric current that heats up the edges of the strip, causing them to melt and fuse together.
   • Sizing and Cooling: After welding, the tube passes through sizing stands that adjust its diameter and wall thickness. Finally, the tube is cut to the desired length and cooled using water or air spray.
   • Finishing: The finished steel tube may undergo additional processes such as straightening, end facing, or coating before being bundled and stored for shipment.

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