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Method for corrosion repair and long-term protection of ship propeller

A technology for propellers and ships, applied in the field of corrosion repair and long-term protection of ship propellers, can solve the problems of ship propeller corrosion, complex process operation, deformation of propeller blades, etc., and achieves good anti-cavitation corrosion performance, low maintenance risk, and thermal impact. small area effect

Active Publication Date: 2014-05-21
QINGDAO QIANJIN SHIPYARD
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AI Technical Summary

Problems solved by technology

[0004] At present, traditional welding repair methods such as carbon dioxide gas shielded welding and manual tungsten argon arc welding are mainly used for the treatment of ship propellers after corrosion. The risk of fracture during use; at the same time, the corrosion resistance of the repaired ship propeller is further reduced due to the repaired weld seam, and corrosion on the surface of the ship propeller is more likely to occur again, so the long-term protection of the repaired propeller is also a current technology problem

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  • Method for corrosion repair and long-term protection of ship propeller
  • Method for corrosion repair and long-term protection of ship propeller
  • Method for corrosion repair and long-term protection of ship propeller

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Embodiment Construction

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0041] refer to Figure 1-13 , is an embodiment of a method for corrosion repair and long-term protection of ship propellers.

[0042] A method for corrosion repair and long-term protection of ship propellers, comprising the steps of:

[0043] A. Use resistance thermal micro-arc surfacing equipment to repair the corroded parts on the surface of ship propellers;

[0044] B. Use supersonic flame spraying equipment to prepare ceramic protective coatings on the surface of ship propellers.

[0045] Among them, the resistance thermal energy micro-arc surfacing equipment includes pulse precision welding repair system and electric spark ion micro-arc surfacing syste...

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Abstract

The invention provides a method for corrosion repair and long-term protection of a ship propeller. The method includes the following steps that firstly, a resistance heat energy micro arc build up welding device is utilized to repair corroded parts on the surface of the ship propeller; secondly, a high velocity oxy-fuel device is utilized to prepare a ceramic protective coating on the surface of the ship propeller. According to the method for corrosion repair and long-term protection of the ship propeller, firstly the resistance heat micro arc build up welding device is utilized to weld up corrosion defects on the surface of the ship propeller, in the welding-up process, welding materials and a base body can be well metallurgically bonded, the heat affected zone is small, accuracy can be controlled, and maintenance risks are low; then the high velocity oxy-fuel device is utilized to prepare the ceramic coating on the surface of the ship propeller, the ceramic coating is ultra-strong in hardness, high in bonding strength with the base body and excellent in wear resistance and corrosion resistance, the surface of the propeller can be protected for a long term, and therefore the service life of the propeller can be greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion repair, and in particular relates to a method for corrosion repair and long-term protection of ship propellers. Background technique [0002] The propeller of a ship plays the role of propelling the ship forward, and its performance has a great influence on navigation. Seawater corrosion, marine organism pollution, and accidental collisions will all cause local damage to the propeller such as bending, cracks, gaps, and corrosion. When the damage is severe, the propulsion performance of the ship will be lost. [0003] The repair of the propeller directly affects the docking period and maintenance cost of the ship. Traditionally, propellers are made of copper materials. Among copper alloys, considering the requirements of corrosion resistance and damping of materials, propellers are mainly made of high manganese aluminum bronze and nickel aluminum bronze. Generally, ship propellers adopt c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00C23C4/06C23C4/12C23C4/129
CPCB23P6/00C23C4/06C23C4/12
Inventor 苏新勇刘基凯杨秀红
Owner QINGDAO QIANJIN SHIPYARD
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