Ship aluminum alloy can be divided into deformed aluminum alloy and cast aluminum alloy according to different manufacturing processes. Because marine aluminum alloys have special requirements for strength, corrosion resistance, weldability, etc., aluminum-magnesium alloys, aluminum-magnesium-silicon alloys, and aluminum-zinc-magnesium alloys are mostly used for marine aluminum alloys.
Generally speaking, the thickness of the plates used is determined by the hull structure, ship specifications and parts of use, etc. From the perspective of hull lightweight, thin plates are generally used as much as possible, but the depth of corrosion of the plates during the use time should also be considered. Usually used There are thin plates over 1.6mm and thick plates over 30mm. Some special specifications are also used in accordance with the shipyard contract. In order to prevent slip, the deck adopts checkered plates.
From the perspective of ship aluminum alloy development, at present, many domestic aluminum processing manufacturers have begun to focus on the research and development of 5 series and 6 series marine aluminum plates, increase scientific research, expand production scale, and enter the high-end manufacturing market such as marine aluminum plates. So how much do you know about the characteristics and uses of marine aluminum alloys? Let me explain it to everyone.
Characteristics and uses of ship aluminum alloy
Ship aluminum alloy can be divided into aluminum alloy for ship structure and aluminum alloy for outfitting. The aluminum alloys used in ship hull structures are mainly three alloys of 5083, 5086, and 5456. The 6000 series alloys are mainly used for the superstructure of ships due to the intergranular corrosion in seawater. Outfitting aluminum alloys are mainly extruded profiles. The strength and process performance of 7000 series alloys after heat treatment are superior to those of 5000 series alloys. It has broad application prospects in shipbuilding and is mainly used for ship superstructures, such as extruded structures. , Armor plates, etc., but the shortcoming of 7000 alloy is poor stress corrosion resistance, so it limits the range of use of this series of alloys.