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Tumble blasting

Blasting operations in which the workpieces are tumbling in a rotating chamber while being blasted.

Illustration of Tumble blasting

The process

Workpieces are placed on a running belt [1] inside a sealed machine where they are tumbling around while supplying abrasive grit [2]. Workpiece surfaces are machined partly because they turn against each other and by abrasion of the abrasive agent. Thanks to the tumbling all surfaces are exposed and blasted well.

Usually, a wheel blaster is used for supplying abrasive.

The method can also be used without the addition of abrasives to provide a simpler surface treatment by the details hitting against each other.