Recently, BGTG, a leading invar steel manufacturer in China, has successfully achieved commercial production of ultra-thin invar in conjunction with a Chinese LNG shipbuilding company.
Invar is a metal that is widely used in the industrial field. It not only does not deform, but also has a very low expansion coefficient. Therefore, this material is often used in the construction of civilian ships. The most common one is specifically used for transporting liquefaction. Natural gas LNG ships, because Invar can remain undeformed in ultra-low temperature environments, it is the most suitable material when manufacturing equipment to contain LNG. At present, large quantities of Invar are used in LNG ships in Japan, South Korea and other countries. Manufacturing containers for storing and transporting liquefied natural gas.
However, Invar is not only effective, but also more difficult to manufacture. At present, there are only a few countries in the world that can successfully manufacture Invar. Before achieving breakthroughs in Invar production technology, most of China relied on foreign imports. Due to its complex characteristics, production is very difficult. Difficulty. Therefore, the price of Invar in foreign countries has remained high, the procurement cost has been continuously increased, and it is also easy to get stuck. In order not to be controlled by others, a number of Chinese companies jointly developed this product and finally successfully manufactured 0.7 mm Invar in one fell swoop. Get rid of dependence on Western countries, and the entire manufacturing industry has been further improved.
With the breakthrough in Invar production technology, the construction of LNG LNG carriers will no longer be restricted in the future. China’s current shipbuilding strength is already very strong. Coupled with the widespread use of domestic Invar, domestic LNG ships will become more and more popular. Larger, stronger and stronger, thus completely surpassing Japan and South Korea, successfully occupying the international market, and also allowing China's shipbuilding industry to rise to a new level.
Not only that, Invar can also be used in high-end industrial products in the fields of aerospace, laser, optical measurement, and astronomy. For example, it is an important part of the composite materials on the surface of many aerospace equipment. After the successful domestic production, In the future, China will develop more smoothly in these fields.
In addition to direct application to industrial products, Invar is often seen in various molds required for the manufacture of industrial products, such as the paving used in the prototype manufacturing stage of aerospace parts. Due to the high durability of Invar and the reliability of vacuum, the weight of the mold made with it is 60% lighter than that of the laying mold made of ordinary materials. The factory is more convenient to operate during transportation, and the production time is more convenient. It has also been shortened by 20%, the manufacturing cost has been greatly reduced, and the prototype manufacturing of aerospace parts is therefore more convenient and faster.