Atomized Powders

Coating Technologies

There are numerous techniques to clad a substrate with a layer of special charcteristics. Properties of the layer can be optimized for:

• Wear resistance

• Corrosional resistance

• Heat resistance

• Hygenic surfaces

• Decorative surfaces

Established pocesses for cladding are for example:

• Electric arc wire spray

• Atmospheric plasma spray

• High Velocity Oxy-Fuel (HVOF) spray

• Gas fuel HVOF

• Liquid fuel HVOF

• Combustion spray

• Combustion powder spray

• Combustion wire spray

Typical materials: Carbides, nitrides, borides, multiy-component systems

Powder type: water atomized / irregular particle shape

Sintering techniques developed into an important industry branch when it comes to mass production of geometrically advanced components. Metal powder is filled into moulds compacted by a piston under high pressure. Then this green part is sintered in a furnace. Typical applications can be found in automotive area, e.g. toothed wheels in gear boxes, seat adjusters and many more. Ferritic high strength steels are used very often, however, high alloy steels are also used often, depending on application.

Typical materials:

• High strength steel

• Tool steel

• Stainless steel

Powder type: water atomized and ultra fine, spherical particle shape

Metal injection moulding is suited excellently for mass production of small and geometrically very demanding components. Similar to injection moulding of plastics, a pasty feedstock made of metal powder and binder is injected into a mould. After removal from the mould the binder is debinded from the component. Dimensional accuracy of the component is not neagtively affected during this process and the component is sintered. Maximum weight of such components is approx. 120 g. Mass of such parts is limited, however, the MIM process is preferably used for mass production. Typical components are used for turbo chargers, seat adjustors, camshaft phasers, components for turbo jet engines for aircrafts etc.

Rapid development of additive manufacturing processes causes diversified requirements on machines, powders, handling of the printer as well as on resulting demands on mechanic- technological characteristics of printed parts. As soon as engineers have realized the tremendous freedom in design of new and more functional components, experts expect significant stimuli in creating highly functional components which cannot be manufactured by conventional procedures. Numerous examples of components manufactured by this technology point to the tremendous potential which is now in reach. thyssenkrupp has systematically build-up a product portfolio which guarantees that powders supplied fit chemically, morphologically and size-wise to your machine type in use and to requirements of the respective component.

• Sintered filter elements
• Embedding of diamonds
• Reinforcement of plastic materials
• Magnetic materials
• Conveyer belt supervision
• Dental applications