Renishaw has developed a new laser melting additive-metal manufacturing process capable of producing fully dense metal parts direct from 3D CAD data.

The parts are built layer by layer, in thicknesses ranging from 20 to 100 microns, using a high-powered fiber laser. The final product is made from a range of fine metal powders that are fully melted in a tightly controlled atmosphere.

The current range of machines has a third-generation design with key features such as variable powder delivery, ultra low oxygen content in the build atmosphere, and a safe-change filter system to minimize user contact with materials.

There are two systems available: the AM125 and the AM250, both of which feature vacuum technology and low gas consumption.

Both models have the design engineering of a machine tool, and feature similar operation and serviceability. The touch-screen operator interface will include menu options for machine preparation and clean down.

Consumable costs are minimized through features such as the soft re-coater blade that can be rotated several times before replacement, use of low-cost filter elements, and low gas consumption – all of which improve system reliability and cost of ownership.

Renishaw additive-metal systems are able to process a wide variety of materials, including 316L and 17- 4PH SS, H13 tool steel, aluminum Al-Si-12, titanium CP, Ti-6Al-4V and 7Nb, cobalt-chrome (ASTM75), and Inconel 718 and 625.

Both systems are designed for rapid material changeover. The AM125 uses a cassette-type materials delivery system, while the AM250 uses a removable hopper. The hopper system is particularly useful for materials development or use of a range of materials.

Also, to help enhance productivity, an interlocking valve on the AM250 allows extra powder to be added while the process is running. Safe processing of reactive materials, such as titanium and aluminum, is ensured with features such as a gas knife that clears away reactive, sooty emissions, and a heated build plate.

The AM125 provides a part-build volume of 125 x 125 x 125 mm (X-Y-Z), and the AM250 provides 250 x 250 x 300 mm (X-Y-Z) with Z axis extendable to 360 mm.

For more information visit: www.renishaw.com