One of the major issues that arises during the processing of very large steel fabrications is the problem of flash rusting of the part after blasting and prior to painting.

This is a serious problem in areas of high relative humidity. Due to the very size of the components being blasted it can take many hours or even days prior to the application of the primer coating. This can result in the freshly blasted steel surface to flash rust prior to the application of the first layer of paint. Once the steel has started to rust it no longer meets the quality standard required for painting and will require reblasting, a big waste of resources.

The Relative Humidity level of the air surrounding the part determines how fast the part will corrode. Higher relative humidity levels produce faster corrosion rates. Lower relative humidity levels will extend the time taken for the part to start to rust.

By reducing the Relative Humidity in the blastroom, Blastechnik Eco-Friendly Air Cooled Dehumidifiers will slow down this corrosion rate and provide enough time to apply the first coating.

The equipment comprisesof refrigerating, reheating, ventilation systems and intelligent PLC touch screen electrical controls.

The Blastechnik dehumidifier is able to maintain relative humidity levels at 50% RH at comfortable operating temperature of 25deg. C during blasting and clean up. With a relative humidity level of just 50% RH the risk of flash rusting is almost completely eliminated.

Avaliable in sizes from 1.000m3/h to 18.000m3/h dry air.

Avaliable in pre-cooled and after-cooled versions for warm climates.

Robust design with steelframe, eyebolts etc.

Vital parts can easily be maintained and exchanged. Large air inlet grills and filters.

Can be built into containers for protection.

Adjustable dehumidifying capacity and outlet air temperature in 4Grades.

Outdoor and indoor use.

Dry air pressure up to 1200 Pa.