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Application And Prospect Of Laser Cleaning Technology On Ships
Aug 08, 2018

Laser cleaning technology is considered a "game-changer" in the cleaning industry. Due to its environmental protection, energy saving and high efficiency, it can solve the problems that cannot be solved by traditional cleaning methods, and it is also considered to be the most reliable and effective solution.

Application of laser cleaning technology on ships

MRJ-Laser is a high-tech enterprise specializing in R&D, production and sales of laser cleaning equipment. Through in-depth survey, the company found that laser cleaning has huge market potential in shipbuilding, repair, and port machinery, offshore platforms, and containers.

In recent years, laser cleaning technology, as a new laser application, has advanced technology, obvious advantages and broad development prospects. Although the market is still in the cultivation stage, there is no doubt that this “green” new cleaning technology will gradually replace and subvert traditional cleaning technology of ship repair and manufacturing.

Experts pointed out that the sandblasting process will be replaced by advance technology as China's environmental protection regulations become more stringent and people's awareness of environmental protection and safety is increasing. At the same time,laser cleaning is considered to be the most reliable and effective solution.

Prospects for laser cleaning technology

Laser cleaning is a substitute for traditional sandblasting and grinding processes, which undoubtedly makes the shipbuilding industry full of expectations. The existing cleaning process for ship repairing is mainly sand blasting,shot peening, and some artificial sanding, they mainly focus on"short,flat and fast".

In the manufacture and repair of ships, cleaning is an essential process, mainly used in the two stages of steel plate pretreatment and sectional pretreatment of new ships, as well as rust and paint removal in ship repair. Although the current sandblasting process is relatively mature and efficient, there are still technical defects, such as over-standardization of the pre-treatment, and it is impossible to use the sandblasting process on high-end ships such as luxury cruise ships. Pollution and damage to the body of workers who have been engaged in sandblasting for a long time should not be underestimated.

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Taking a company's ship repair as an example, the cleaning of the ship is carried out in the open dock of the ship. Workers are required to operate the sandblasting gun. Usually, 120 people need to hold 120 sandblasting guns at the same time to repair a ship. The efficiency of each gun is about 8 to 10 square meters per hour. When sandblasting, the dust is extremely cloudy, the pollution is extremely serious, the operation process takes a long time, and the worker is very prone to danger because it is close to the grinding part.

The sandblasting process is seriously polluted and does not meet the requirements of national environmental protection policies. Moreover,except the consumption of steel sand, water, electricity and labor consumption is also very large, and workers who have been engaged in sandblasting for a long time are likely to cause serious occupational diseases. As a result, fewer and fewer people are willing to work in this profession, and the people working on the job need to be replaced at intervals. It is understood that most of the workers engaged in sandblasting operations are older, and young people are not will be to be engaged in this industry, so it is hard to recruit for sandblasting operation in the future.

According to the researchers, steel plate pretreatment during ship construction can also be replaced by laser cleaning. For example,according to the specification of 3.2 meters in width, the shipyard has to handle steel of more than 4,000 square meters per day, a laser with a relatively large power should be used, which should be more than 500 watts considering the cleaning efficiency. At present, there are more than 1,000 shipyards above designated size in China,let alone the whole world. It is inferred that the laser cleaning market is already huge, just for the needs of ship repair and new ship steel plate pretreatment. At the same time, in the ship-related industries such as port machinery, oil platforms and containers, a large number of sandblasting operations are required, and more such cleaning equipment is objectively required.