The specification below provides the recommended improvements needed to improve product durability. They are ranked from bronze to gold based on the effectiveness of the change in improving durability, with bronze being the minimum and gold being the maximum.
Check coating quality using salt spray
Additional adhesion tests; acrylic interior panels
Carry out adhesion testing (EN ISO 16276-1 and EN ISO 16276-2) in addition to salt mist cyclic testing to BS EN 60068-2-52.
Acrylic interiors are increasingly common and are reasonably durable.
Stainless steel or ceramic / enamel interior panels
Stainless steel will give the best performance although needs to be kept clean to prevent corrosion.
Ceramic / enamel surfaces are also very durable.
The tests below demonstrate appropriate coating adhesion:
BSI BS EN 60068-2-52 “Environmental testing Part 2: Tests Test Kb. Salt mist cyclic (sodium chloride solution)”
Additional tests for coating adhesion:
EN ISO 16276-1 “Corrosion protection of steel structures by protective paint systems - Assessment of, and acceptance criteria for, the adhesion/cohesion (fracture strength) of a coating - Part 1: Pull-off testing”
EN ISO 16276-2 “Corrosion protection of steel structures by protective paint systems - Assessment of, and acceptance criteria for, the adhesion/cohesion (fracture strength) of a coating - Part 2: Cross-cut testing and X-cut testing”
Improved reliability of components can reduce early returns and improve brand reputation which, in turn, can lower business costs and increase long-term sales.
To calculate overall cost savings for your business, use the WRAP cost/benefit analysis tool (currently in draft form and available on request).
Most domestic ovens use powder coated internal surfaces and these should survive the normally expected lifetime at no extra cost, as long as they are applied correctly, pass the required tests and are maintained correctly by the customer.
Stainless steel panels
Commercial ovens and some more expensive domestic models use stainless steel panels which will be more expensive than powder coated mild steel.