Dalian Ada Ship & Marine Engineering Co., Ltd.
Which shipyard in Dalian is good? ******Dalian Ada Shipbuilding
Due to power supply or welding, violating operating procedures, causing leakage, which makes the hull a huge anode, causing large-scale corrosion. This corrosion is very alarming. For example, four landing craft built by a certain factory were almost completely corroded through after one year, with the 6mm steel plate almost completely rotten. Mechanical corrosion includes corrosion and mechanical wear, which accelerate each other. This includes impact corrosion, which is caused by liquid turbulence or impact.
Cavitation corrosion, high-speed flowing liquid, due to irregular flow, produces cavitation, forming a "water hammer effect", often destroying the protective film on the metal surface, accelerating corrosion, such as propellers and pump shafts; micro-vibration wear corrosion, wear caused by the mutual vibration of two adjacent surfaces; stress corrosion cracking, which is the metal corrosion damage under the action of tensile stress and corrosive medium, cracks along the grain or through the grain will be produced in the metal.
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