What is tumbling and how does it work?
Tumbling is a mechanical surface finishing process used to eliminate imperfections in small components and parts. Tumbling relies on automatic and semi-automatic machines equipped with abrasive plastic cones for deburring.
The aluminium surface of the product is pattered by the abrasive cones, which remove burrs and imperfections resulting from machining or cutting operations.
This preparatory treatment takes place in a barrel called a ‘tumbler’, which rotates on an axis, causing the aluminium parts to collide with specially shaped abrasive materials. The tumbler speed influences the processing speed. For this process, the operator must have the utmost precision and knowledge, especially when it comes to small parts and components, since a process that runs too long or involves unsuitable materials could compromise the quality of the product. Tumbling is a preparatory treatment for electro-oxidation or chemical brightening.
The advantages of tumbling
- Speed: processing times are very short compared to traditional technologies, although everything depends on the type of parts to be processed;
- Flexibility: both small and large numbers of parts can be processed;
- Simplicity: the machines are small and easy to use;
- Cost: the use of these machines reduces costs by replacing other more complex, costly processes
Our tumbling department is equipped with vibratory finishing machines with abrasive plastic cones for deburring small parts.