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Longitudinal and Lateral Slitting Lines

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  1. Definition: Longitudinal and Lateral Slitting Lines
  2. Explanation of the term "longitudinal and lateral slitting lines"
  3. Composition of a longitudinal and lateral slitting line
  4. Working with a longitudinal and lateral slitting line
  5. Buying a longitudinal and lateral slitting line
  6. Buying a longitudinal and lateral slitting line

The coil weight of a steel strip roll can reach up to 45 t. Coils must therefore be cut into narrower strips (longitudinal slitting line) or handy plates (lateral slitting line) prior to further processing. Modern longitudinal and lateral lines consist of a reel, a straightening machine as well as slitting and cut-to-length shears. However, before shears or knife shafts come into action, the strip thickness must be measured and the unwound coil shaped by straightening machines. At Surplex you will find used machines for sheet metal processing such as longitudinal slitting lines, lateral slitting lines, guillotine shears, strip processing lines, profiling machines and other used machinery.

A slitting line is a processing line in the metalworking industry, which cuts panels and bands into the desired form. Lateral slitting lines are used for panels, and longitudinal slitting lines are used for sheet metal that will be wrapped into coils. A machine that can conduct both tasks is called a longitudinal and lateral slitting line.
  • Assembly line in the metal industry
  • Cutting of panels and bands
  • Processes long and lateral workpieces
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A longitudinal and lateral slitting line is a complex assembly line that belongs to the vast majority of stations. The first section is a decoiler. This leads the sheet metal into the feed rollers. Longitudinal knives with fixed or mobile circular knives cut the band in the longitudinal direction, according to its length. Those with a lateral configuration cut the band in the lateral direction. A loop pit with a loop bridge can be used to even out the longitudinal difference between the individual strips. Band brakes and separation rings are used to ensure that the strips are properly wound around the coiler. Lateral slitting lines have a stacking device instead of a coiler.

Longitudinal and lateral slitting line in use
Given the complexity of a longitudinal and lateral slitting line, it is obvious that only thoroughly qualified personnel should operate it. This doesn't necessary mean that un-skilled workers cannot be hired to work with the machine; these workers just have to be trained accordingly. It is recommended that there is always a mixed team of experienced and non-experienced workers. Qualified industrial mechanics should always be available, in case there is big problem. A longitudinal and lateral slitting line requires a lot of maintenance. Badly maintained machines will incur long periods of stand still.

Before the installation of such a machine, particular components should be switched out if there is no maintenance document that accompanies the machine. This is particularly relevant for the bearings. It is recommended that all components of a longitudinal and lateral slitting line are bought from the same manufacturer, in order to ensure that all components fit each other.

When looking for a used machine, it is important to research buying individual components versus complete machines. Not every manufacturer of individual components also offers all the other necessary components for a longitudinal and lateral slitting line. It is not recommended to install components (e.g. decoiler) that are made by unknown brands. It is not necessary to switch out the whole machine, when just one component is defect. The installation and adjustment of the machine is more demanding, when all the components come from different places. Therefore, it is recommended to find a specialist for this task. Recommended suppliers of complete machines are SCHWABE, FORSTNER, SACMA, WILHELMSBURGER, KOHLER and UNGERER.