Hebei Moran Environmental Protection Technology.,Ltd is one of main metallurgical equipment factory in China. our products include new and used steel and aluminum rolling mill,2hi 4hi 6hi 8hi to 20 hi rolling mill machine, skin pass mil, tension leverler, tension leverler and skin pass mix mill, caster, steel coating line, pickling line ,annealing furnance,grinder, and other related equipment and its parts.our machine has been exported to many country and enjoy a very good reputation among our users.
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The temper mill or skin pass mill, which may be of the stand-alone type or in-line, enables improvement of the mechanical characteristics and surface quality of the metal. The skin pass process causes permanent lengthening of the strip, orientating the grains in the direction of the strip, which has a positive effect on many of the metal's mechanical properties. This improves the drawing process, as the plastic deformation obtained eliminates metal creep on the edges of the elastic deformation areas, this being the deformation that generates imperfections on drawing. The so-called creep zone is also eliminated. Similarly, the skin pass mill is able to notably correct the flatness defects caused by hot-rolling. The working rolls provide the material with the desired surface quality, as regards both roughness (Ra) and peaks per inch (PPI). Roughness application is the final strip rolling process and is therefore definitive and defined by the requirements of the end customer, and it is vital for the various subsequent processes (painting, etc.).
Temper mills are equipped with an uncoiler and recoiler, a centring device, entry and exit bridles, anti-crimping rolls, a two- or four-high stand with quick roll change, bending blocks, cutting height adjustment, hydraulic pressing and a control system with a computerised process model. Wet skin-passing may also be performed.
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