Isostatic Press Technology

Isostatic press technology is to use Pascal's principle to place the pressed material sealed in the flexible mold or the 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. The pressure is transmitted to the interface of the flexible mold or workpiece equally in all directions through the pressure medium, 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 press technology is usually divided into cold isostatic pressing, warm isostatic pressing, and hot isostatic pressing according to the temperature during forming and consolidation.

The isostatic press is a technology that realizes isostatic pressing at room temperature. Usually, rubber or plastic is used as the jacket mold material, and liquid or elastomer is used as the pressure medium. Cold isostatic pressing is mainly used for molding and pressing of powder materials to provide preformed blanks for further sintering, forging or hot isostatic pressing.

It is the basis of isostatic pressing technology that the fluid medium transmits pressure equally in all directions, and establishing a non-leakage interface between the pressed material and the pressure medium is the key to isostatic pressing technology.

Isostatic pressing technology is gradually applied from research experiments to large-scale production. Many industries use this technology for the consolidation of powders or the repair of defects in castings, including ceramics, metals, composites, plastics, etc., due to its properties such as precision molding and improved material properties.

Jiangsu High Tech Co., Ltd. is located in Zhenjiang, Jiangsu. It is a high-tech enterprise that develops and produces high-performance polyurethane products, cold isostatic pressing molds and cold isostatic pressing machines. The company's main products are polyurethane isostatic pressing molds and cold isostatic pressing machines. The company's products are widely used in all walks of life in China and exported to more than 30 regions around the world. They are widely praised by customers for their excellent quality and good service. The company always adheres to the product concept of "quality first" and has a deep understanding of customer needs. The company has been committed to the research and development and production of high-performance polyurethane elastomer molds for many years, and solves various design and production problems of polyurethane elastic molds for isostatic pressing users. The company has mature production and processing technology and a complete set of experimental equipment for mold elastomer analysis. In order to ensure the excellent impact resistance, abrasion resistance, cutting, tear resistance and clarity of the product and excellent dimensional stability. Its products are widely used in magnetic materials, ceramics, cemented carbide, high temperature refractory materials, rare earth permanent magnets, carbon materials, rare metal powders and other industries.

Compare to traditional rubber cold isostatic pressing bags, the polyurethane CIP bags have significant advantages. As a new polymer material, polyurethane products feature smooth surface, wearing-resistant, anti-fatigue, low deformation rate. The surface of pressed products with polyurethane bags is much smoother than that pressed with rubber bags, thus it possesses better looks and less postprocessing is required. It’s an ideal tool for powder material forming by press process, which can help a company reduce cost and increase efficiency.

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