Isostatic graphite
1. Isostatic pressing and isostatic pressing
Isostatic pressure: refers to the state of applying equal pressure to the sealed material in all directions at the same time.
Isostatic pressing: the material to be pressed is placed in a high-pressure container after being sealed, and the material is uniformly pressurized from all directions by using the incompressible nature of the liquid medium and the property of uniform pressure transmission. When the liquid medium is injected into the pressure by the pressure pump When using a container, according to the principle of fluid mechanics, its pressure is constant and uniformly transmitted to all directions, so the pressure on the powder in the high-pressure container is uniform and consistent in all directions. The method of densifying the powder into a green body by the above method is called isostatic pressing.
2. Isostatic graphite
Isostatic graphite refers to graphite materials produced by isostatic pressing. Due to the uniform and constant pressure of the liquid pressure during the molding process, the isostatic graphite material has excellent properties, with: large molding specifications; uniform structure of the blank; high density and high strength; isotropy (characteristics and dimensions, Shape, sampling direction has nothing to do), so isostatic graphite is also called "isotropic" graphite.
Advantages of isostatic graphite:
Electrical resistance, durability, and other properties do not depend on orientation
The possibility to produce 3D heaters for vacuum furnaces
Increased chemical and oxidative resistance
High thermal shock resistance
Low abrasion and long service life
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