LNG ship is a unique ship that transports LNG (Liquefied natural gas) from a liquefaction plant to a receiving station. The main factor of liquefied natural gasoline is methane. Which will facilitate transportation, it is usually liquefied through freezing at a completely low temperature (-165°C) beneath regular pressure.
The garage tank of LNG deliver is a special structure unbiased of the hull. Inside the layout of the ship, the main factors considered are materials which can adapt to low-temperature media. Generally, marine carbon steels are brittle at such low temperatures. For that reason, the cargo tanks of LNG ships can simplest be made of expensive nickel alloy steel or 5083 aluminum sheet.
The protection of LNG ships has usually been the point of interest of the enterprise. In addition to high energy and excessive toughness to withstand bending load and sloshing impact, the liquid-carrying cargo tank production substances need to have dependable low temperature resistance and thermal insulation performance, in addition to suitable processing era, formability and welding performance.
At gift, the main low-temperature resistant substances for the LNG ship Invar steel, 9% Ni metallic and 5083 aluminum alloy. Invar metallic is an iron-nickel alloy with very small thermal growth coefficient, low thermal conductivity, low energy and hardness, high plasticity and toughness, and may maintain a fixed length in a extensive temperature variety. It's miles very luxurious and has extremely excessive requirements for the welding process.
The main structure of nine% Ni metal is ferrite, which may be used at -196°C. It is widely utilized in LNG garage tanks because of its high energy and coffee thermal enlargement charge. LNG garage tanks are normally large, and it's miles not possible to behavior warmth remedy after welding. Consequently, with a view to keep good low temperature durability after welding, 70% Ni metal is used because the welding cloth.
Aluminum grade 5083 has low density, high specific energy, correct plasticity, corrosion resistance and processability, and no low-temperature brittleness. It has come to be a broadly used fabric for production low-temperature garage tanks. Welcome to depart message under to inquire aluminum 5083.