Explanation

It is a method of densification of powder by placing the processed object in a closed container full of liquid and gradually pressurizing each surface with equal pressure through the pressurization system. 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 is commonly used as a pressure medium with water or oil, hence it is referred to as hydrostatic pressure, hydrostatic pressure, or oil-water hydrostatic pressure; The latter often uses gas (such as argon) as the pressure medium, and is known as inherent gas hot isostatic pressing. The pressure of the hot isostatic press used in general industrial production is 150-200MPa, and the temperature is 1500 ° C. hot isostatic pressing (HIP) is mainly applied to the molding of high-performance powder products, such as powder metallurgy high temperature alloy, powder metallurgy high speed steel and ceramics materials; Eliminate the internal defects of hardmetal, castings or used components; Bonding of solid materials, such as metal to metal, ceramics or fiber composite materials.

Classification