Polyurethane CIP Molds/Bags for Powder Metallurgy

Polyurethane CIP Molds/Bags for Powder Metallurgy

Powder metallurgy is a processing method that prepares metal powder and makes products from metal powder or a mixture of metal powder and non-metal powder through processes such as shaping and sintering. It can not only prepare special materials that are difficult to prepare by ordinary smelting methods, but also manufacture various products. A kind of precision mechanical parts, saving labor and materials. However, the cost of molds and metal powder is high, and it should not be used when the batch size is small or the size of the product is too large. Compared with traditional material processes, powder metallurgy materials and processes have the following characteristics:

1. The powder metallurgy process is carried out at a temperature lower than the melting point of the base metal, so multi-phase heterogeneous special functional composite materials and products such as a variety of metals, metals and ceramics, metals and plastics with widely different melting points and densities can be obtained.

2. Improve material performance. Fine metal or alloy powder prepared by a special method has extremely fast solidification speed and fine and uniform grains, ensuring a uniform structure of the material, stable performance, and good cold and hot processing properties, and the powder particles are not affected by alloy elements and content Limitation, the reinforcing phase content can be increased, thereby developing new material systems.

3. Using various forming processes, powder raw materials can be directly formed into blanks or net-shape parts with little or no margin, greatly reducing the amount of machining. Improve material utilization and reduce costs.

The pressure acts directly on the powder body or the elastic mold sleeve, so that the powder body is evenly pressed in all directions at the same time to obtain a compact with uniform density distribution and high strength.

Isostatic pressing uses liquid as the pressure transmission medium. Put the powder into an elastic mold and place it in a steel sealed container. Use a high-pressure pump to press the liquid into the container. The liquid's characteristics of uniformly transmitting pressure are used to make the powder in the elastic mold evenly pressurized. Therefore, cold isostatic pressing compacts have high density, are relatively uniform, have good mechanical properties, are large in size and have complex shapes, and have been used in the production of bars, pipes and large products.

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