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Manganese Phosphate Bath Fluid

A manganese phosphate bath fluid is composed of manganese, phosphoric acid, water and an etching compound. These baths are used for applying a conversion coating to metal parts (mostly steel and manganese) that are used in oily environments. The manganese combines with phosphoric acid and the surface metal of the part to form a layer of insoluble crystalline phosphates, which prevents galling and provides excellent wear protection. Oil treatment is commonly employed as a post treatment process. Manganese phosphate coatings are widely used on metals designed for automotive and defense industry use. Having a lower coating weight than heavier zinc phosphate coatings, manganese phosphate coatings have excellent oil absorbing abilities that minimize wear on moving metal parts.

See our video of the Dump Cycle from cleaning a 6,000 gallon Zinc Phosphate Tank.
We replaced a Pressure Filter, which had been in place for many years. The customer stated, “CentraSep took out more solids in one day than our other system would do in a week!”

Metal flanges, mill and brass nuts

The manganese phosphate solution is either sprayed on the part, or more commonly, the part is immersed in a manganese phosphate bath. In these baths, the temperature, time and chemical composition of the manganese phosphate fluid must be carefully controlled to produce high quality and consistent results. A by-product of this coating process is a sludge that forms and settles to the bottom of the immersion tank. As more of this manganese phosphate sludge accumulates in the tank, the coating process becomes less efficient. Thus, the tanks require periodic cleaning to remove this sludge.

CentraSep® offers a highly effective way to keep the manganese phosphate bath fluid clean and sludge-free. The manganese phosphate bath fluid continually circulates through the centrifuge filtration system, where the centrifugal force is more than 2,000 times the force of gravity. Even the smallest micro-particles of manganese phosphate are removed from the manganese phosphate bath fluid. The resulting clean fluid is then continually recycled and reused in the manganese phoshate coating process. By properly and continually filtering and separating the manganese phosphate particles out of the bath fluid, the coater is ensured of a smooth, efficient process, where perfect chemical balances and temperatures are maintained, and downtime is virtually eliminated.

While the manganese phosphate coating industry continues to become more competitive, it is important for a coater to establish any and all competitive advantages available. The coaters implementing CentraSep manganese phosphate bath fluid filtration systems are seeing increased production, decreased costs and higher profits. Our ultra-efficient and effective manganese phosphate bath filtration systems can dramatically and positively impact a coater’s bottom line. We have an experienced and dedicated team of Filtration Engineers, technicians and manufacturing personnel that truly understand the manganese phosphate coating industry, and they are ready to work with your team to develop a centrifuge based filtration and separation solution that not only works extremely well, but one that requires virtually no maintenance.

CentraSep is the proven leader in manganese phosphate bath fluid filtration. Since 1981, CentraSep has specialized in solving filtration and separation problems through advanced science and application engineering. This problem-solving approach is showcased in our manganese phosphate bath fluid filtration systems, where we listened to coater’s needs, studied their problems and developed the most effective process possible. CentraSep can offer you savings by reducing labor, filter media expenses, inventory, disposal fees and water replacement costs. Contact us today to see how CentraSep can help you with your manganese phosphate bath fluid application.

Benefits of the CentraSep Manganese Phosphate Bath Fluid Filtration System:

  • Eliminates tedious and expensive “pump and shovel” tank cleaning operations.
  • Improves heat transfer in the coating process.
  • Eliminates the need for media paper and its disposal fees.
  • It is a fully automatic system requiring very little monitoring.
  • Offers the lowest maintenance in the Industry.
  • Maximizes your manganese phosphate fluid life.
  • Reduces your waste stream / recyclable waste.
  • Constructed of 316 stainless steel (standard).
  • Reduces pollution and environmental impact.
  • Capable of separating solids to the single micron.
  • Has an optional LIFETIME WARRANTY available.
  • Incorporates the experience of numerous domestic and international installations.

CentraSep is more than a centrifuge manufacturer; we are a Filtration Engineering Solutions Company.

Talk to one of our Engineers today to see how we can help you with your manganese phosphate bath fluid filtration and separation needs.

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