Technical Support

What are the common ship maintenance processes and maintenance methods?

① Use high-pressure water or high-pressure water sandblasting with a pressure of up to 500 kgf/cm to clean the hull and remove rust, and the rust removal speed reaches 2000 m/h;

② The hull shall be painted by high-pressure airless painting method with a pressure of 200 kgf/cm. If the climate is humid, the hull shall be dried with hot air, and the spraying speed shall reach 4000 m/h;

③ The method of segmental and piecewise prefabrication is adopted to change the plate of the hull, and the daily plate change of a single ship reaches 30~40 tons;

④ The divers operate tools such as hydraulic rotary brush or pneumatic rotary brush to clean or overhaul the hull underwater, so as to solve the difficulty of repairing large ships without large docking, and can be carried out at the same time as loading and unloading goods, so as to reduce the loss of suspension caused by docking;

The use of alkaline solution to remove the grease on the mechanical and electrical equipment, with acidic solution to remove the scale, with a neutral solution to clean electrical appliances, cleaning efficiency is greatly improved;

⑥ Take the method of repairing large parts such as crankshaft, shaft system and rudder stock on the ship or in the dock without dismantling to the workshop;

⑦ Specialized repair of precision parts such as automation devices, speed governors, superchargers, etc. ⑧ The small and medium-sized parts shall be replaced in groups, and the replaced old parts shall be repaired according to the new standards and then reused.

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