Why does the metal compensator have localized corrosion? The following small series explains why the metal compensator has local corrosion: The corrosion of the metal compensator occurs in the local position of the metal. Its shape is pitting corrosion, crevice corrosion, and why does the metal compensator have local corrosion? The following small series explains why the metal compensator has local corrosion:
The corrosion of the metal compensator occurs at the local position of the metal. Its morphology includes pitting, crevice corrosion, intergranular corrosion, delamination corrosion, stress corrosion, fatigue corrosion, selective corrosion, wear corrosion, cavitation corrosion, and vibration. Corrosion, hydrogen etching, etc.
Crevice corrosion occurs in environments such as welds, rivets, gaskets or deposits. It is a special form of pitting corrosion. The prevention method is to eliminate the gap.
Intergranular corrosion is deep into the metal from the surface along the grain boundary, causing the grain boundary to be reticulated. The intergranular corrosion is caused by the deposition of impurities in the grain boundary, mainly due to improper heat treatment and cold working.
The delamination corrosion occurs in the layered structure. The corrosion first develops vertically inward, and the material which is parallel to the surface is corroded under the expansion force of the corrosive material to cause the surface to peel off layerwise.
Stress corrosion occurs in the case of corrosion caused by corrosion and tensile stress. Methods to prevent stress corrosion; Elimination or reduction of welding, stress generated in cold working by heat treatment, improvement of irrational elastic sleeve compensator structure, avoiding stress concentration, Electrochemical protection, spray anti-corrosion coating. Add corrosion inhibitor, apply compressive stress and other measures.
Cavitation corrosion, also known as cavitation and cavitation, is a special form of wear and corrosion. It is a bubble generated in a fluid. The shock wave generated during the burst can be up to 400 atmospheres, causing damage or even tearing of the metal protective film. Metal particles. Then re-etched into a film, this process is repeated and repeated, causing corrosion of the metal. The method of preventing cavitation corrosion can be selected from cavitation resistant materials, high-precision processing surfaces, elastic protective layers and cathodic protection.
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