Tube industry

   

Optimization of the weld seam by strip edging

If a slit edge is used as a functional edge, the edge quality of slit strip is not adequate to produce a high quality product. More than 70% of the edge area is broken and exposes the ruggedness of the slit, unevenness in regards to straightness, angle and structure.

The optimization of the strip edge is a basic condition to benefit entirely of the advantages of modern welding methods.

Thanks to strip edge trimming by metal-cutting, the strip edges are steadily cleaned and straight. They meet requested dimensions. Any coating is removed and the V-angle is shaped to any angle. The result is:

  • less energy input
  • higher welding speed
  • less bulge
  • less shaping at the inner and outer weld seam
  • fewer rejections
  • less strip width addition (gain of material)
  • homogenous welding structure
  • better quality of the weld seam
  • better shape due to less compression

Strip edge trimming machine designed for the deburring of the strip edge or for simple contours at the strip edge

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The strip edge trimming machine of the series DUO works with 6 tools. Often the DUO is integrated into tube production lines to optimize the weld seam.

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The TRIO strip edge trimming machine works with up to 9 tools achieving even complex contours at the strip edge.

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The QUATTRO strip edge trimming machine is one of the biggest strip edging machines in the modular system of JULIUS. It achieves any contour required with 12 tools.

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The QUINTO strip edge trimming machine is one of the biggest strip edging machines of the modular series working with 15 tools.

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With one tool the grooving machine of the series NU removes a layer of coating from the strip surface. The tool can be adjusted vertically and horizontally.

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The grooving machine of the series TRI-NU draws up to three grooves into the strip surface with a max. distance of 10 mm (0.39") (in case of three grooves) or 20 mm (0.79") (in case of two grooves).

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