No need for a laser

Additive manufacturing using

Hermle MPA Technology

Hermle MPA technology stands for an innovative andversatile additive manfacturing technology for large-volume metal parts, which can play to its strengthsespecially in the field of tool and mould making.MPA is a thermal spray process where metal powderparticles are accelerated to high speed within a gasstream and applied to a surface via a nozzle.

With the integration of the MPA application unit into aHermle machining centre, material application andmilling are combined to a hybrid manufacturingscheme. The 5-axes technology of the machine allowsfor material build-up on freeform surfaces. With this,prefabricated solids can be extended with additivelymanufactured components in a very flexible way. TheMPA process also allows to combine multiple materialswithin one part. In addition to conformal cooling, thisalso offers the possibility to integrate copper inlays orembed heating conductors into your components.

Additive manufacturing of die cast toolsHermle MPA technology is used to build a conformal coolingchannel on the surface of a massive blank. The resultingsurface of the part can even be polished to high gloss.

Hermle MPA technologyManufacturing using metal powder application

Cooling and heatingTools manufactured with MPA technology

Manufacturing steps of a tool with copper coresStarting with a steel blank, predefined geometries are filledwith copper using the MPA process. After smoothing thesurface, layers of steel are applied on the part, covering thecopper cores. In a finishing milling step, the part is given itsfinal contours.

Tools with cooling channels and copper elementsAdditive manufacturing with multiple materials allows forheat conduction with a combination of cooling channels andembedded copper elements. Copper can be integratedwherever a conformal cooling layout with cooling channelsist not possible for geometric reasons.

Tool inserts with cooling - material build-up on blanksWith the possibility to apply material on freeform surfaces,most parts can be manufactured starting with a massiveblank. The conformal cooling channels are just added on topof their surface. With the 5-axes configuration of the MPAmachine, material can also be applied radially on rotatingcylindric blanks.

sales.hmg@hermle.de+49 89 673 5950 - 335

www.hermle-generative-manufacturing.com

Hermle Maschinenbau GmbHDaimlerstraße 6

D-85521 OttobrunnGermany

Interested? Contact us!Our service offerings

Hermle MPA technologyManufacturing using metal powder application

Cooling and heatingTools manufactured with MPA technology

Hermle offers manufacturing of moulds and toolsusing MPA technology as a service to its customers.Our service offerings include:

– Feasibility studies for your components– Part design optimisation for MPA-technology– Manufacturing on customer-provided semi-

finished parts– Material tests– Heat treatments

Are you interested in Hermle MPA technology?Would you like to learn more about its advantagesand also its limits? Do not hestitate to contact us!

Integrated heating conductorsMPA Technology allows for integration of heatingelements and functional parts.

The large working space of the machine, togetherwith material build-up rates higher than 200 cm³/h forsteel and 900 cm³/h for copper, let MPA technologyenter new dimensions in additive manufacturing. Aspecial filling material is used as a place holder whencooling channels and other cavities are implemented.water-soluble filling material. It is water-soluble andcan be rinsed out at the end of production.

Hot work tool steels 1.2344, 1.2367Cold work tool steels 1.2333, 1.2379Stainless steels 1.4404, 1.4313Invar, Iron, copper, bronze...

Range of Materials

For all materials available with MPA technology, highquality metal powders are used with individuallyoptimized process parameters. The materialproperties of the spraying process show a porosity farless than one percent. After a heat treatment, ourparts are 100 percent dense, so even a glossy finishof the surfaces is possible.