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What Is Aluminizing?

wallpapers Low Carbon 2021-01-26
Aluminum is a silver-white light metal. There is malleability. Commodities are often made into rods, sheets, foils, powders, ribbons and filaments. It can form an oxide film to prevent metal corrosion in humid air. Aluminum powder and aluminum foil can burn violently when heated in the air and emit a dazzling white flame.
 
It is easily soluble in dilute sulfuric acid, nitric acid, hydrochloric acid, sodium hydroxide and potassium hydroxide solution, but hardly soluble in water. The relative density is 2.70. Melting point is 660°C. The boiling point is 2327°C. The content of aluminum in the crust is second only to oxygen and silicon, ranking third, and is the most abundant metal element in the crust. The development of the three important industries of aviation, construction, and automobiles requires the characteristics of materials to have the unique properties of aluminum and its alloys, which greatly facilitates the production and application of this new metal aluminum. The application is extremely wide.
 
Adding a small amount of aluminum to some metals can greatly improve their performance. For example, bronze aluminum (4% to 15% aluminum), this alloy has high-strength corrosion resistance, hardness similar to low-carbon steel, and has a metallic luster that is not easy to darken. It is often used in jewelry and construction industries to make machinery. Parts and tools used for pickling equipment and other equipment in contact with dilute sulfuric acid, hydrochloric acid and hydrofluoric acid; making electric welding brushes and grips; heavy gears and worm gears, metal forming molds, machine tool guides, non-sparking Tools, non-magnetic chains, pressure vessels, heat exchangers, compressor blades, ship propellers and anchors, etc. Adding magnesium to aluminum produces an aluminum-magnesium alloy. Its hardness is much greater than that of pure magnesium and aluminum, and it retains its light weight. It is often used in the manufacture of aircraft fuselages and rocket bodies; doors and windows, Beautify the room environment; build ships.
 
Aluminizing is a method of chemical heat treatment of steel, which forms a high temperature resistant aluminum oxide film on the surface of ordinary carbon steel or cast iron to protect the iron inside. Aluminum is a very important metal, however, many aluminum-containing compounds have a very significant effect on humans.

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