Over time the lining of the vibro machine will wear. This will happen more quickly with highly abrasive process media and with sharper / heavier components and very slowly with polishing processes (providing the correct ratios of parts-to-media are adhered to).
When a lining does wear, or worse becomes damaged and the steel work of the bowl is exposed a number of things can happen: namely a loss of drive in the process bowl and potentially the creation of a ‘dwell’ spot where media and parts will slow down, collect and can cause damage to the parts being processed or to the fabricated bowl itself.
It is recommended to periodically check the bowl lining (ideally when you are changing media anyway to save any extra labour) and monitor it for signs of thinning or worse still, damage. Depending on the process hot cast polyurethane linings have proven the most durable and will last many years in operation where housekeeping and maintenance are good. In the event of abuse or extended life where wear and/or damage occur we would always advise a complete reline as the best solution to return your machine back to a reliable working condition. Whilst patching kits are available invariably they are only temporary fixes and, if applied incorrectly or in aggressive environments can ‘peel off’ – sometimes within hours of having been applied and the machine returned to use.
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