ISO Molds for Isostatic Pressing Technology

ISO Molds for Isostatic Pressing Technology

The invention of isostatic pressing technology has a history of more than 60 years, but the development has been slow in the first 40 years. In the past 20 years, with the development of emerging technologies, powder metallurgy is required to provide more special-purpose materials and complex shapes. Parts; so the rapid development of isostatic pressing technology occupies a very important position in the powder metallurgy forming process.

Isostatic pressing is a special forming method developed on the basis of traditional dry pressing. It uses fluid to transmit pressure to apply pressure evenly to the powder in the elastic mold from all directions. Due to the consistency of the internal pressure of the fluid, the pressure on the powder in all directions is the same, so the difference in the internal density of the green body can be avoided. Isostatic pressing can be divided into wet bag isostatic pressing and dry bag isostatic pressing. Wet bag isostatic pressing can form products with complex shapes, but it can only be operated intermittently. Dry bag isostatic pressing can realize automatic continuous operation, but it can only form products with simple shapes such as square, round, and tubular cross-sections. Isostatic pressing can obtain a uniform and dense green body, with small firing shrinkage and uniform shrinkage in all directions, but the equipment is more complicated and expensive, and the production efficiency is not high, so it is only suitable for the production of materials with special requirements.

Isostatic pressing technology is to place the sample powder to be pressed in a high-pressure container, and use the incompressible properties of liquid or gas medium and the property of uniform pressure transmission to uniformly pressurize the sample from all directions. When the liquid medium passes through the pressure When the pump is injected into the pressure vessel, according to the principle of fluid mechanics, its pressure is constant and evenly transmitted to all directions. At this time, the pressure on the powder in the high-pressure container is uniform and consistent in all directions. The method of forming barren powder into a compact body by the above method is called isostatic pressing.

    Jiangsu High Industry on the research and development and production of high-performance polyurethane isostatic pressing molds. Through in-depth cooperation with many isostatic pressing equipment manufacturers and in-depth study of the industry, the developed isostatic pressing polyurethane mold series products have the characteristics of long service life, high precision, small deformation, easy demoulding, etc., and are widely used in ceramics, etc. Static pressing mould, cemented carbide isostatic pressing mould, rare earth permanent magnet material isostatic pressing mould, graphite isostatic pressing mould, etc.

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