logo.png

Western Trailer installs pre-paint blast booth to enhance paint finish on trailers 2012.

Along with the 75' long blast booth the company has developed an entire new painting protocol that brings state of the art metal finishing to our exposed metal parts.

Here is the process: Check out our Photo page for the pictures that go along with each numbered step below.

1. Surface Preparation

Steel undercarriage, side rails and other exposed steel components are exposed to a thorough round of compressed air blast using 80 grit steel bits in our 75' long SAFE Systems Inc, blast building. This is the same system used by aircraft, boat and rail car manufacturers. By blasting the metal bits into the steel it creates a profile on the steel that allows the paint to better adhere to the surface by creating a mechanical bond and minimizes the potential for rust creep if a chip does develop. 

http://www.safesys.com/BLASTROOM/d-blastroom.html

2. Pre-primer surface washing

Exposed parts are washed at between 180 and 200 degrees with Dubois Securestream FRP Iron Phosphate, rinsed and then sealed with SpectraLink Sealer.   This removes any and all foreign material (oil etc.).  Iron Phosphatizing is the chemical process that converts the surface area of iron or steel to a matrix of millions of tiny metal iron phosphate molecules creating a chemical bond.  This coating is considered a conversion coating in that it is converted to a new substance that is not longer "Free" metal.  "Free" metal is more reactive and more susceptible to corrosion.

http://depts.clackamas.cc.or.us/wet/documents/SCWhyWePreTreat.pdf

http://www.duboischemicals.com/pcp/pcp.html

3. Primer

Only after the steel has been blasted, bathed in Iron Phosphate and sealed with Dubois Link Technology SpectraLink nonchrome sealant affixed to the metal.  Surface areas are covered with LV260 Epoxy Primer at a thickness of approximately 4 to 5 mills.

4. Final Finish

The final finish is a polyurethane U-TECH 3.5 System High Solids low VOC 2K.  This Polyester formulation provides high chemical resistance, flexibility and toughness. 

5. Drying

The finishes are dried using an infrared drying process that heats the surface metal and cures the paint from this point outward.  This assures absorption of the primer and finish base and allows the direction of the heat where it is needed most.  Because flat surfaces absorb energy best the more complex areas can have infrared directed toward these parts of the under-carriage. 

Summary

Our paint process is regularly and thoroughly tested by an outside laboratory using Gravelmeter SAE J440 GT-28, Adhesion ASTM D3359, Humidity ASTM CEMS GT-5B, Salt Spray 500 hours CEMS-GT-7D.  Western Trailers are finished to provide a quality appearance with significantly reduced risk of rust or flaking.  When you buy a Western you are buying superior paint work driven from the early stages of the metal preparation to the final coat that combine to provide the state of the art in corrosion protection.