Isostatic Rare Earths
Rare earths are mainly used in military affairs, metallurgical industry, petrochemical industry, glass ceramics, agriculture and so on.
1. Military aspects: Rare earth is known as the "gold" of industry. Because of its excellent physical properties such as optoelectronics and electromagnetics, it can form new materials with different properties and varieties with other materials. Its most notable function is to greatly improve other materials. Product quality and performance. For example, the tactical performance of steel, aluminum alloy, magnesium alloy, and titanium alloy used to manufacture tanks, aircraft, and missiles has been greatly improved.
2. Metallurgical industry: Adding rare earth metals or fluorides and silicides to steel can play a role in refining, desulfurization, neutralizing harmful impurities with low melting point, and can improve the processing performance of steel. It is widely used in automobiles, tractors, and diesel engines. and other machinery manufacturing industries; adding rare earth metals to magnesium, aluminum, copper, zinc, nickel and other non-ferrous alloys can improve the physical and chemical properties of the alloy, and improve the mechanical properties of the alloy at room temperature and high temperature.
3. Petrochemical industry: The molecular sieve catalyst made of rare earth has the advantages of high activity, good selectivity, and strong resistance to heavy metal poisoning, so it replaces aluminum silicate catalyst for petroleum catalytic cracking process.
4. Glass ceramics: mainly include superconducting ceramics, piezoelectric ceramics, conductive ceramics, dielectric ceramics and sensitive ceramics. Rare earth oxides or processed rare earth concentrates can be widely used as polishing powder for optical glass, spectacle lenses, picture tubes, oscilloscope tubes, flat glass, plastic and metal tableware; in the process of melting glass, it can be used Cerium dioxide has a strong oxidation effect on iron, reducing the iron content in the glass to achieve the purpose of removing the green color in the glass.
5. Agriculture: The research results show that rare earth elements can increase the chlorophyll content of plants, enhance photosynthesis, promote root development, and increase root absorption of nutrients. Rare earth can also promote seed germination, increase seed germination rate, and promote seedling growth. In addition to the above main functions, it also has the ability to enhance disease resistance, cold resistance and drought resistance of certain crops.
Isostatic pressing is a new forming method developed with the rise of modern powder metallurgy technology. Generally, isostatic pressing is divided into cold isostatic pressing and hot isostatic pressing according to its characteristics. The former often uses water or oil as the pressure medium, so It is called hydrostatic pressure, hydrostatic pressure or water-oil static pressure. The latter often uses gas (argon) as the pressure medium, which is called gas hot isostatic pressure.
