Pretreatment Technologies

Pretreatment Technologies

Conversion Coatings

Monroe-Monroe Engineering & Machining's conversion coatings have been utilized in numerous industries over the past 30 years, providing reliable and cost effective solutions to many clients - large and small. Monroe-Monroe Engineering & Machining recognizes the vital importance of the pretreatment process in meeting performance requirements and specifications. Because substrates can vary, Monroe-Monroe Engineering & Machining offers a variety of pretreatment processes -- including: zinc phosphate, iron phosphate, manganese phosphate and Alodine ®. Whether the conversion coating is a base for paint or the finish coat, these processes provide the highest quality corrosion protection and superior paint adhesion.

Manganese Phosphate

Monroe-Monroe Engineering & Machining's Manganese Phosphate process is widely used for parts that require lubrication during a break in process. Immersion-applied coating weights of between 500mg/sqft to 1500mg/sqft can easily be achieved. Pistons, gears, spline shafts, bearing housings and other components are carefully treated to attain the highest protection necessary for engine start-up and all critical functions.

Zinc Phosphate

Monroe-Monroe Engineering & Machining's Zinc Phosphate process is widely used to improve corrosion resistance and paint adhesion on steel and iron. Immersion or spray-applied coating weights from 150mg/sqft to 1200mg/sqft can easily be achieved. While the crystalline structure produced is typically reserved as a base for paint adhesion, it can also serve as a short term corrosion inhibitor while improving the substrate's appearance.

Iron Phosphate

Monroe-Monroe Engineering & Machining's Iron phosphate process is widely used to improve corrosion resistance and paint adhesion. Immersion or spray-applied coating weights from 25mg/sqft to 100mg/sqft can be easily achieved. While the amorphous structure produced is typically reserved as a base for paint application, it can also serve as a short term corrosion inhibitor while improving the appearance of the substrate. This process represents fewer stages and more cost effectiveness than ZnP.

Alodine®