With a wide variety of different items that come in to our workshop, Grade 2 IMPACT cater for them all through care and attention to detail to what both the client expects and what the equipment requires.
One of our specialities is that we cater for clients where they require treatment of very delicate and high value items on a turn-key basis.
Industries we service through our in-house facility or on-site applications include
Typical equipment requiring blast cleaning and coating range from general steel fabrications, pump casings, piping, process vessels through to specialised equipment like heat ex-changers, control valves, actuators and hydraulic parts.
Due to the varied material these items are manufactured from, ie, mild steel, stainless steel, cast iron, hastelloy, bronze, brass, copper, aluminium and exotic alloys care needs to be taken to ensure zero damage occurs whilst cleaning to obtain the best possible surface profile to either allow correct protective coating application or simply return to a bright raw finish.
Typically grit blasting is used to remove mill-scale from new steel items, corrosion, existing or failed coatings and/or provide a correct anchor profile for application of new protective coatings.
Both generic or specification demands a certain surface cleanliness and profile range.
In order to achieve any desired cleanliness and specific anchor profile, a predetermined size and type of ‘grit’ or blast media is selected.
There are many products available that fall under the category of ‘grit,’ all manufactured from both natural (minerals) and by-product materials (glass, steel & plastics) that are graded to specific grain size and shape to achieve the correct substrate impact, suitable to remove whatever is on the substrate, or to create the ‘peaks and troughs’ profile required for new coating adhesion.
Prior to preparation, we select the best suitable product for the specific application required in order to achieve the desired results, so you can be confident of the outcome from start to finish.
Glass bead blasting, also commonly known as ‘bead blasting’ or ‘peening’ is generally used to clean all forms of non-ferrous metals and exotic alloy mixes.
It is used because it is known to be a lot less aggressive than the standard grit blasting process, producing a fine, uniform non-directional satin or matt finish with low reflectivity.
These types of finishes have both aesthetic appeal and can enhance the surface properties of stainless steel, aluminium, and most alloys.
During fabrication for instance, the welding process generates heat transfer, creating blue scorching around the welded joints. Handling and machining can result in fine surface scratching or blemishes, which look unsightly in certain circumstances, such as if the finished item is on show.
Glass bead blasting removes the blue scorching, fine scratches, blemishes, and tarnish to leave an appealing smooth ‘sheen’ finish overall.
Finishes can be specified and controlled by considering the ‘bead’ size, blast intensity and coverage of the substrate surface.
During the ‘peening’ of austenitic stainless steel, the surface is work hardened and compressive stresses are induced, creating specific advantages from the substrate property changes such as improved fatigue resistance, increased surface hardness, enhanced scratch resistance and improved stress corrosion cracking resistance.
Once cleaned, stainless steel items can be further protected using a nano thin film coating which will provide a long term ‘lustre’ finish, minimise marks from handling, fingerprints, grease, or transportation. This nano technology remains clear transparent, flexible, will not chip, crack, or peel, plus will not discolour or yellow with heat exposure.
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We can apply specified multi-coat industrial coatings to ensure longevity when placed or returned to service.
We also specialise in application of coatings to resist elevated temperatures, high erosion & abrasion, cavitation and corrosion in the most aggressive environments such as off-shore or chemical containment. Using the latest cold cure composite technology, we can even re-build holed, pitted or severely damaged items that would otherwise be scrapped and return to service for less of a cost of buying new.
Please contact us here at Grade 2 IMPACT for further information.