Given the right conditions, the iron will tend to revert back to the more stable compound of iron oxide i.e. The steel making process uses large amounts of energy to convert the iron oxide in the ore to elemental iron that is naturally unstable. In this natural state, iron ore or iron oxide is stable and has minimal natural tendency to change or to react with other materials. Iron and steel are made from iron ore which exists in the earth’s crust as an oxide of iron. This reaction is often referred to as oxidation of the metal. The most common form of corrosion metals undergo is reacting with oxygen and water (moisture) present in the air. There are three general types of coatings used in maintenance painting.THREE WAYS GALVANIZING PROTECTS STEEL CORROSION OF STEEL Tighter restrictions will follow in California, Arizona, New York and New Jersey, minimizing the solid volumes to levels as low as 340 grams/liter. The new volatile organic compound (VOC) limits will fall to 450 grams/liter of paint. government will enact regulations to lower the amount of paint contaminants to increase environmental protection. Are touch-up applications being considered when estimating the maintenance costs? What is the value of the paint selected? How often will it need to be recoated?Įnvironmental regulations - What are the local environmental regulations for paint and coatings? Is the paint within these standards? How will the paint process affect nearby surroundings? As of June 2002, the U.S. Price - Typically, higher quality paint increases price. There are several effective ways to stop corrosion:Īesthetics - What materials are going to be coated? How important is it for the paint coat to look attractive? Is color retention important? Otherwise, the life of steel and other metals will be limited, reducing efficiency and escalating the cost of maintenance. To make the use of steel and other metals practical in construction and manufacturing, some corrosion-protection practices must be employed. Just as soil varies considerably in composition, it also varies in its electric conductivity: some soils cause more severe corrosion than others. Pipelines and other steel buried in the ground will be prone to corrosion unless protected.
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