The characteristics of isostatic pressing are similar to the principle of isostatic pressing. Axial pressing molding is unidirectional or bidirectional pressure pressing, powder and mold friction is larger, pressure along the pressing direction will produce pressure loss, so that the density of each part of the blank body is not uniform. The pressure transmitted by the liquid medium in isostatic pressing is equal in all directions. When the elastic mold is subjected to the pressure of the liquid medium, the deformation is transferred to the powder in the mold. The friction between the powder and the mold wall is small, the force of the blank body is uniform, the density distribution is uniform, and the product performance is greatly improved.
Isostatic pressing technology is to use Pascal's principle to place the pressed material sealed in a flexible mold or a solid workpiece with a closed shell in a high-pressure cylinder filled with fluid pressure medium, and use high-pressure equipment to exert a certain pressure on the pressure medium in the cylinder. Pressure, through the pressure medium, the pressure is equally transmitted to the interface of the flexible mold or workpiece, so that the pressed material or workpiece undergoes a certain volume deformation under the action of isostatic pressure, thereby realizing isostatic pressing. If the material to be compressed is a powdery substance, when the pressure acts equally on the surface of the flexible mold, the powder in the package will be uniformly compressed and densified, and its shape is smaller than and similar to the cavity of the flexible mold.
Isostatic pressure treatment: It is to place the product in the container containing liquid, under certain pressure and temperature conditions, apply equal pressure to the product from all directions and all surfaces, so that the product does not change the appearance and shape of the condition, reduce the distance between molecules, increase the density, and even produce the deformation of molecules and atoms, to change the surface state of the substance, molecular arrangement and physical properties. Improve various physical properties of substances, and then obtain new materials and high performance materials, to meet the requirements of aviation, aerospace, petroleum, chemical and other fields of material performance.