Application of Isostatic Pressing and Cold Isostatic Pressing

Application of Isostatic Pressing and Cold Isostatic Pressing

Application of isostatic pressing technology

In the initial stage, isostatic pressing technology was mainly used in powder forming of powder metallurgy; especially the manufacture of integral blisks of engines, which is of great significance in the aerospace field. The structural design and manufacturing technology of modern aero-engines is an important link in the development, development and use of engines. In the 21st century, high thrust-to-weight ratio engines require reducing structural weight and reducing development and manufacturing costs. In order to meet this stringent requirement, it must be updated Manufacturing technology and improvement of processing technology, while improving engine reliability and maintainability, increase engine thrust and thrust-to-weight ratio as much as possible, and reduce weight. The ultra-high pressure isostatic pressing technology provides an opportunity for the use of special lightweight and high-performance materials to realize the overall and lightweight molding of the engine. Similarly, isostatic pressing technology plays an excellent role in the manufacture of impellers such as civil oil pumps, and improves the mechanical properties of impellers at low temperatures. In addition, isostatic pressing technology can be widely used in ceramics, casting, atomic energy, tool manufacturing, plastics and graphite and other fields, and has excellent performance in parts densification, compounding, and connection.

Cold isostatic pressing

Cold isostatic pressing technology is a technology to achieve isostatic pressing at room temperature. Usually, rubber or plastic is used as the mold material for the envelope, and liquid or elastomer (plastic, rubber) is used as the pressure medium, and the pressure can reach 600MPa.

Cold isostatic pressing technology overcomes the disadvantages of ordinary molding technology, such as shape distortion, so that cold isostatic pressing has high density and uniformity, small shrinkage, and easy shape control. Expand to other powder metallurgy fields. Since the size of the green compact formed by the cold isostatic pressing process is only limited by the size of the inner cavity of the high-pressure cylinder and does not need to be controlled by the total pressure of the ordinary molding press, the cold isostatic pressing technology can be used to form the large-sized green compact. By using cold isostatic pressing technology, a compact shape can be formed through a mold cavity formed by a plastic envelope or a rigid mold part.

1. Application of Cold Isostatic Pressing in Ceramics

At present, cold isostatic pressing technology has been used in the ceramic industry, including refractory bricks, ceramic tubes, alumina lamps, alumina grinding balls, etc.

2. Application of Cold Isostatic Pressing in powder metallurgy

Cold isostatic pressing technology is widely used to make cemented carbide with large size, complex shape and strict performance requirements, roll, top hammer for synthetic diamond, cemented carbide cutting tool, etc. It is also widely used to form various powder materials with large height-diameter ratio, such as tungsten, high-speed steel, beryllium, aluminum and other rod-shaped and tubular blanks of different sizes, thus ensuring the performance of these materials and giving full play to powder metallurgy and cooling. The advantages of combining static pressure technology.