The Basic Type of Industrial Aluminum Profile Aluminum Alloy-Huachang Aluminum-Aluminum Profiles SUPPLIER

Generally speaking, the basic types of industrial aluminum aluminum and aluminum alloy corrosion: point corrosion, puppet corrosion, gap corrosion, inter -crystal corrosion, stress corrosion, peeling and corrosion, fatigue corrosion, silk corrosion, etc. Today, the four types of corrosion, uniform corrosion of aluminum, gap corrosion, and stress corrosion are shared for everyone.

1. Point corrosion, also known as corrosion, is a local corrosion form that generates needle tip -like, dot -shaped, and pore -shaped on the metal. Point corrosion is a unique form of anode reaction. The process of self-catalytic, that is, the conditions caused by the corrosion process in point corroding pores are both promoted and sufficient to maintain corrosion.

2. Uniformly corroded aluminum In the solution such as phosphate and sodium hydroxide, the oxide film on it will dissolve, uniform corrosion, and uniformly dissolving speed. The temperature of the solution increases, the solution concentration is increased, and the corrosion of aluminum is promoted.

3. Setting corrosion is a local corrosion. In the electrolyte solution, metal parts form a gap between metal and metal or non -metal. The width is enough to immerse the medium and cause the medium to stagnate, and the phenomenon of increasing the interior of the gap is called seam corrosion.

4. SCC of stress corrosion cracking (SCC) aluminum alloy was discovered in the early 1930s. The species destruction that occurs under the combination of stress (tensile stress or internal stress) and corrosive media, which is known as SCC. SCC. Expansion of grains.

Because the crack expansion is inside the metal, the intensity of the metal structure will be greatly reduced. Suddenly damaged in severe cases under severe conditions. They are: certain stress or residual stress inside the metal.