Hull segmentation
Korean shipbuilding companies continue to innovate in practice, so that the hull segment pre-production gradually realizes large-scale and large-scale, which greatly improves work efficiency, shortens the shipbuilding cycle, and increases shipbuilding output.
The large-scale development plan for hull segmented prefabricated parts formulated by Samsung Heavy Industries shows that the company currently has a sub-piece prefabricated weight for each hull.
2000~3000 tons, the hull section produced by China Ningbo Hull Section Prefabricated Parts Factory is such a specification; next, the hull section prefabricated parts will be enlarged, and the weight of one piece will increase to 4000~6000 tons; by 2010 The hull section prefabricated parts will be super-large, and the weight of one piece will reach 12,000 tons. This section is mainly used for the construction of VLCC and ultra-large container ships. At present, Samsung Heavy Industries has maritime segmentation of the hull produced at the Ningbo Ship Hull Prefabricated Parts Factory to the Korean Geoje Shipyard. It is assembled into a new ship in the floating dock by 10 hull segment prefabricated parts; by 2008, The hull section prefabricated parts are large-sized, and can be assembled into a whole ship by six hull section prefabricated parts. By 2010, the hull section prefabricated parts are oversized, and it takes 2~3 hulls to assemble a whole ship. Segment prefabricated parts. Due to the use of hull segmented prefabricated parts, the production efficiency can be greatly improved. Therefore, Samsung Heavy Industries is expanding its investment to increase the annual output of the Ningbo hull segment prefabricated parts factory. At present, it has expanded from the original annual production of 60,000 tons of hull segmented prefabricated parts to 120,000 tons will be upgraded to 200,000 tons after the completion of the expansion project at the end of this year. In addition, Samsung Heavy Industries has started construction of the second hull sub-prefab factory in Shandong Rongcheng, China. It is expected to be completed and put into operation in 2008 with an annual output of 500,000 tons. By then, Samsung Heavy Industries' total production capacity of two hull segment prefabricated parts plants in China will reach 700,000 tons.
The calculation of the benefits of the shipbuilding method using the hull section prefabricated parts shows that Samsung Heavy Industries currently uses segmented prefabricated parts weighing 2000~3000 tons. The average construction period of the ship in the dock is 45 days; if it is heavy 4000~ For 6,000 tons of segmented prefabricated parts, the number of prefabricated parts required for each ship is reduced from 10 to 6, and the construction period of the ship in the dock will be shortened from 45 days to 27 to 28 days. At present, Samsung Heavy Industries has assembled the entire ship with 2000~3000 tons of segmented prefabricated parts. The ship has a turnover rate of 10 times a year, which is at a high level among the world's shipping companies; if it uses 4000~6000 tons of segments in the future Prefabricated parts, the turnover rate of the dock will be further improved. Now, the Samsung Heavy Industry Hull Section Prefabricated Vessel is sailing from the factory in Ningbo, China, to the Korean Geoje Shipyard, docked at the floating dock, and then directly hoisting the prefabricated parts of the ship into the floating dock with water floating cranes, which greatly It saves time on the logistics links such as loading and unloading ships, and creates conditions for shortening the shipbuilding cycle.
In order to shorten the shipbuilding cycle, the two new floating docks built by Daewoo Shipbuilding and Ocean Engineering Co., Ltd. have been completed and put into operation in mid-April, and a floating floating crane has been installed. The company's hull segment prefabricated parts factory in Yantai, China, also uses the same method as Samsung Heavy Industries, which first transports the segmented prefabricated parts to the Yupu Shipyard in Korea and then directly hoists into the dock for final assembly.
Transporting thick plates at the right time
Daewoo Shipbuilding & Ocean Engineering Company has greatly improved the logistics efficiency of heavy plate transportation through another important innovation. The company has signed an agreement with Posco, a heavy-plate supplier, to deliver the slabs produced by the company to the special barges in a timely and appropriate manner, depending on the number and timing of the slabs required for shipbuilding. The shipyard of Daewoo Shipbuilding & Ocean Engineering Co., Ltd. guarantees the time and quantity of supply and demand of thick plates, reduces the inventory burden of steel enterprises and shipbuilding enterprises, and removes unnecessary logistics links so that both parties can benefit.
The head of the Korean shipbuilding industry recently confirmed the win-win cooperation model between Daewoo Shipbuilding and Ocean Engineering Co. and Posco. He believes that the logistics operation method of using heavy plate special transport barges greatly shortens the time for the thick plates to be put into use, thereby shortening the shipbuilding cycle and improving the efficiency of both shipbuilding enterprises and steel enterprises. This method is worthy of being a shipbuilding enterprise. Promotion.
At present, Hyundai Heavy Industries and Samsung Heavy Industries are negotiating with Posco Steel Corporation, and are also preparing to adopt the heavy plate transportation method between Daewoo Shipbuilding and Ocean Engineering Co., Ltd. and Posco Steel Corporation to establish timely and appropriate supply of thick plates according to the progress of shipbuilding. The logistics mechanism achieves the goal of a win-win situation for shipbuilding enterprises and steel enterprises.
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