Boat plate is a material used to make the hull of a ship, usually made of materials such as steel, aluminum alloy, fiberglass, etc. Among them, steel ship plate is one of the most commonly used materials, and its composition and properties have a significant impact on the strength, corrosion resistance and service life of the hull. The following will analyze the material of the ship plate and introduce the composition properties.
1. Steel ship plates.
Steel ship plates are one of the most commonly used hull materials, consisting mainly of iron, carbon, and a small amount of alloying elements. Among them, iron is the main component of ship plates, carbon can increase the strength and hardness of ship plates, and alloying elements can improve the corrosion resistance and other properties of ship plates.
The manufacturing process of steel shipboard includes two processes: hot rolling and cold rolling. The hot rolling process is to smelt iron ore into molten steel at a high temperature, and then process it into a steel plate of a certain thickness through a rolling millThe cold-rolled process is to make the hot-rolled steel plate into a steel plate with a certain thickness and surface quality through pickling, cold rolling, annealing and other processes.
The advantages of steel ship plates include high strength, high hardness, good corrosion resistance, etc. The disadvantage is that it is heavier, which is not conducive to the lightweight design of the ship. At the same time, the cost of steel ship plates is also higher.
2. Aluminum alloy ship plate.
Aluminum alloy ship plate is a lightweight, high-strength hull material, mainly composed of aluminum, magnesium, silicon and other elements. The advantages of aluminum alloy ship plates include light weight, good corrosion resistance, good thermal conductivity, etc. Its disadvantage is that it is higher and has poor impact resistance.
The manufacturing process of aluminum alloy ship plate includes two ways: casting and extrusion. The casting process is made by smelting aluminum into a liquid, pouring it into a mold and cooling and solidifyingThe extrusion process is to process the aluminum ingots into aluminum alloy profiles of a certain shape through an extrusion machine.
3. FRP ship plate.
FRP shipboard is a non-metallic hull material, which is mainly composed of fiberglass and resin. The advantages of FRP ship plate include light weight, good corrosion resistance, good impact resistance, etc. Its disadvantage is that it is high and has poor high temperature resistance.
The manufacturing process of FRP ship plate includes hand lay-up method, spraying method and lamination method. The hand lay-up method is made by mixing glass fiber and resin, applying it to the surface of the mold, drying it, and then demoulding itThe spraying method is to mix glass fiber and resin, spray it on the surface of the mold through a spray gun, and dry it and then release the moldThe lamination method is to alternately stack multiple layers of fiberglass cloth and resin and then heat press them.
In summary, the different composition and properties of the board material determine its purpose and service life. When choosing a boat board material, it is necessary to consider it comprehensively according to the actual needs and the use environment. At the same time, in order to ensure the quality and performance of the ship plates, strict testing and quality control are also required.