Ceramic Powder Injection Molding (CIM)

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Application fields of CIM ceramics

Ceramic injection molding makes it commercially feasible to manufacture complex geometric shapes, such as vertical holes, precision threads and other ceramic parts. These features were previously too difficult or expensive to use other traditional production techniques. Through CIM technology, ceramic materials with wear resistance and corrosion resistance, excellent hardness, higher mechanical strength and thermal stability provide more abundant imagination for product selection. At present, the special ceramic products prepared by CIM technology can be used in medical equipment, orthodontics, automobiles, aero engines, watches, vacuum applications, daily consumer products and more application possibilities.

The characteristics and process route of CIM

In traditional machining technology, complex parts are formed first, and then engraved. However, this is obviously not reasonable for ceramic materials with hard and brittle characteristics. After large-scale “rough” machining, It is difficult to guarantee that ceramic materials will leave micro-cracks, which will affect the subsequent product stability. The ceramic powder injection molding technology (Ceramic Injection Moulding, referred to as CIM) can be used to produce small, precise, and three-dimensional complex special ceramic parts in large quantities, with high dimensional accuracy, small machining volume, smooth surface, and low production cost. Therefore, it has become the fastest growing and most widely used precision manufacturing technology for ceramic parts in the world today.

Process brief description

The beginning of CIM starts by mixing ultra-fine ceramic powder raw materials with polymer binders and other additives into raw materials, and then the raw materials are plasticized and injected into the cavity under high pressure. After molding, the injection is removed according to actual needs. Point or add other functions that cannot be achieved during molding. The next step is to debinding in the furnace or using chemical reagents to remove the binder, that is, the degreasing process. After degreasing, it enters the sintering process. In this step, the ceramic The particles fuse together and become a dense special ceramic ceramic component. At this stage, the ceramic has excellent ceramic properties. According to product index requirements, other surface treatments, such as polishing, sandblasting and laser processing, can be further adopted to complete the customization of parts/products.

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