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Honing tube

Basic characteristics of honing tube production:
       The basic feature of honing pipe production is that before the pipe material is cold deformed and after the cumulative cold deformation reaches a certain level, the finished product must undergo a series of preparations before continuing cold deformation to eliminate work hardening and other needs. There are many processes; the pipe material starts from It usually takes multiple cold deformations from being put into production to being processed into finished products. Moreover, the entire production process often includes multiple production cycles consisting of preparation processes and deformation processes. The cycles are repeated, the production cycle is long, and the metal consumption is large; the equipment is mostly arranged in a single unit, and is generally produced intermittently.
   For quality pipes, the outer diameter tolerance is about ± 1-1.5%, the thickness tolerance is about -(10-15)%, + (10-12.5)%, and the curvature is generally not greater than 1.5-2 mm/m; the end should be straight and there must be no burrs; if there are burrs, they must be removed, which is especially important for cold-rolled pipes. In addition, the chemical composition and mechanical properties of the pipe material should comply with the provisions of the technical conditions.
       —Generally, the surface of the pipe material should be pickled first and then inspected. Minor defects can be repaired. For grinding external surface defects, a peeling lathe, centerless grinder, portable or hanging grinder can be used. The grinding of inner surface defects can be carried out on grinding machines such as internal boring machines. Since surface defects will continue to expand during the cold deformation process, and as the pipe diameter decreases during production, it becomes more difficult to grind the inner surface defects. Therefore, the surface defects of the pipe material should be eliminated as much as possible before cold processing.

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