Pretreating and Phosphating Metal Surfaces

Why Are Cleaning and Pretreatment Needed?

It has been estimated that 7 of 10 coating failures are caused by poor surface preparation; these failures cost millions of dollars in wasted time and resources. Coatings applied over properly prepared surfaces cost less per square foot per year than the same coatings applied over a poorly-prepared surface.
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How Does the Cleaning and Pretreatment Process Work?

Part cleaning is done by mechanical actions, by application of chemical solutions, or sometimes by a combination of mechanical and chemical processes.
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Multi-Stage and Single-Stage Systems, Vapor Degreasers, and Manual Cleaning

The choice of a single-stage or multi-stage system depends on the number and size of parts to be treated, the types of contaminants to be removed, and whether or not the treatment must be integrated into the manufacturing process.
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Cleaning and Pretreatment Solutions

Choosing the right cleaning and pretreatment solutions for your operation depends on many factors. The cleaning treatment must remove all the contaminants without causing any harm to the metal surface. Manufacturers have formulated cleaning and pretreatment solutions to be effective against specific contaminants, under certain conditions, in certain types of equipment, on certain types of metal, and for different purposes.
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Metal Cleaning and Surface Pretreatment Processes

It has been estimated that 7 of 10 coating failures are caused by poor surface preparation; these failures cost millions of dollars in wasted time and resources. Coatings applied over properly prepared surfaces cost less per square foot per year than the same coatings applied over a poorly-prepared surface.
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Environmental Concerns

In the U.S., metal finishers (about 15,000 companies) generate more individual wastewater discharges than any other industry. In decades past, it was common for manufacturers to discharge untreated wastewater and other industrial effluents into municipal sewer systems or directly into groundwater supplies such as streams and rivers. Now, regulations to protect water, air, and soil require that wastewater be treated before it can be discharged anywhere.
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References Consulted

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