Abrasive belt machine running on crepe, rips, deviation: check the suitabilityof abrasive belt length (circumference tolerances ± 5mm fan). Check both endsof the belt circumference difference does difference is too large (generallypoor perimeter less than 5mm at both ends), check that the belt is twisted. Easyway to check is: flat on the belt is flat on the ground, on both sides of one end of the belt alignment and twisted at the other end. Check the contact wheelsanding machine, the graphite platen pad and workpiece for any foreign objects.Check the specification of the cutting. Abrasive belt grinding grinding jamsoccur in particle board, its original main sheet with high oil content, abrasivebelt grinding process, the wood chips tend to stick them on the sand surface,clogging the sand face loss of grinding capacity, then burned. Generally theentire belt area. In particle board production process, due to the spices evenlyenough, base resin adhesive in some parts of the sand surface, causing local jambelt bond, which usually appears as a local bar. In addition sanding machine ingrinding process, there will be a small amount of wood is not drawing dust flowaway, into a very thin layer on the surface of sand and broken lines composed ofstreams. These effects of sawdust on the sanding belt is unlikely. Machininggrooves and ripples on the surface of plates: check belt thickness ofconnectors. Joint thickness tolerance is less than 0.10MM, use flat belt is alsoa good way to solve the problem, check the contact wheel and abrasive beltsander surface whether there is a foreign body.