from a simple

Paint stoving oven

 

A convection oven designed to suit a specific paint process that usually entails heating the product up to the stoving temperature, and then holding the product at that temperature for the stoving to be completed (usually referred to as the drying curve).  It is important that the entire product achieve stoving temperature for the product to be fully stoved.  The oven incorporates structural steel to provide a rigid free-standing enclosure, and is clad in insulated panels to retain heat and keep exterior surfaces cool.

Direct-fired gas burners may be used, or the oven may be indirectly heated from other medium.  The oven air is recirculated for maximum economy.  Heated air is distributed throughout the oven by ducting containing high pressure outlet nozzles, and a collection duct returns air to the heating system.  Air is pumped through the oven ducts by a fan.  The fan volume is usually selected to provide four oven volume per minute.  Stoving ovens must be adequately ventilated to prevent any volatile build-up and require explosion relief panels in the walls or roof.

Cleanliness inside the oven is an important feature in ensuring a finish that is free of dirt inclusions.  Ease of cleaning and minimal dirt gathering surfaces should be the aim.

This photograph shows a typical oven installation used in vehicle manufacturing, not the smooth walls and inverted air nozzles.

 

 

 

Pengrave Engineering Ltd, off Delta Way, Bridgtown, Cannock, Staffordshire WS11 0DJ
Tel: 01543 577142 Fax: 01543 577930 Email: sales@pengrave-engineering.co.uk