Painting and Coating Basics
Surfaces are often painted or coated to protect them against corrosion and degradation. Metal corrosion is of particular concern because it can cause equipment failures, which can lead to safety problems, environmental issues, lost production, and increased costs. Wood surfaces are also often painted or coated to provide protection from insects, fungi, and weathering. Paints and coatings for use on masonry surfaces must be formulated for the high pH levels that are often present. Prior to painting or coating, surfaces must be properly prepared, which may include cleaning, sanding, drying, and sometimes priming, in order to achieve even coverage and good adhesion. [course outline] Purpose of Paint and Coatings Metal Corrosion Concerns What Is Metal Corrosion Preventing Metal Corrosion Protective Coatings – Paint Protective Coatings – Epoxy and Galvanizing Protective Coatings – Powder Coating Surface Preparation Cleaning Solvents So
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Course Details
Learning Objectives
• Describe metal corrosion and how it can be prevented • List and describe the main ingredients in paint • List and describe the chemicals that can be used to clean metal surfaces prior to painting or coating • Identify the main causes of wood degradation • Describe the treatments and coatings that can be used to protect wood surfaces • Explain how primers and paints for masonry surfaces are unique • Describe common application methods for paints and coatings • {Audio: And} Identify the safety hazards presented by cleaning solvents, acid cleaners, soaps, detergents, and solvent-based and oil-based paints and coatings
Specs
Frequently Asked Questions
What is the purpose of painting a material?
What is corrosion?
What should happen to metal before it is painted?
What are some alternatives to painting that can be used to prevent corrosion of metal?
What are some treatments for slowing the degradation of wood?
Sample Video Transcript
Metal corrosion is a serious concern because of its prevalence and cost. Left unchecked, metal corrosion can cause premature equipment failures, which can lead to safety problems, environmental issues, lost production, and increased costs. In industrial economies, like the U.S., the annual cost of metal corrosion can exceed 3% of a country’s Gross National Product (GNP).
