Isostatic Pressing

Isostatic pressing

Normally used for products with short production series or products too complicated to press with a tool. Powder is packed to a rubber bag that has the shape of the desired product. The bag is immersed into a pressure tank containing fluid. A compressor is used to pressurize the container to the desired level, where a robust form of the product will be pressed. Then the preformed part will be pre-sintered at 600 - 800 °C, after which the part is chalk-kind and can be CNC machined. At this point it is possible to for example drill holes needed in nozzles. Finally the product will be sintered in normal high temperature and it reach the hardness typical. With isostatic pressing it is quite easy to make complicated designs. The part will also be more uniform in quality, but the processing costs will be higher than the processing costs of a bulk product made with tool pressing.

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