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Additive manufacturing

Additive manufacturing processes

Additive manufacturing processes make it possible to produce a part thanks to the successive deposits of layers of material. In recent years, laser additive manufacturing processes have developed considerably with the arrival of new technologies combined with laser sources which have contributed to this boom within industrial sectors. The integration of laser additive manufacturing machines into the production chain helps reduce costs and waste. This type of process offers the possibility of manufacturing a wide variety of parts according to various geometries and materials.
Additive manufacturing on a powder bed is used for small parts requiring high deposition precision. Additive laser manufacturing by powder spraying or by adding wire is more suitable for large parts and higher production rates. Industrial Laser Systems supports manufacturers in implementing these innovative laser additive manufacturing solutions in order to improve their production capacities and has the means for demonstrations and tests on site or near our partners.

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Laser additive manufacturing with wire feed

This process, close to laser brazing, is called laser-wire additive manufacturing (or WLAM for Wire Laser Additive Manufacturing). Less expensive than powder, the use of wire as a filler metal guarantees a 100% material yield and eliminates the constraints associated with the management of powders. The laser beam allows better control of heat input compared to arc-wire additive manufacturing processes. This feature makes it possible to limit thermal deformations during deposition cycles while improving the properties of the post-process part. Current research still needs to deepen knowledge of the process in order to diversify the materials that can be deposited. The first parts produced allow a wide variety of applications to be envisaged, including reloading, repairing or creating a 3D volume. Several research programs have been launched in France (which includes Industrial Laser Systems) and in Europe in order to better understand and expand the applications of this new laser-wire additive manufacturing process.

Additive construction

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Powder spray laser additive manufacturing (LMD)

Based on the same technology as that used for the repair of aeronautical parts, the powder is projected and melted by a laser beam leaving a high pressure nozzle (reloading head). This process makes it possible to produce parts of greater volume but require draconian protection due to the environment in which the powder is sprayed: entry airlock, room under pressure, suit for operators with air filtration, recycling of powders, etc.

Industrial Laser Systems has manufactured for a major aerospace customer an additive powder spray laser construction machine, integrating a robot and two diode laser sources in a controlled atmosphere enclosure. This LMD machine allows the production of prototype parts but also the repair of specific parts.

rechargement-additive-laser

Rechargement additive laser

Fabrication additive poudre

Optiques rechargement laser

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Powder bed laser additive manufacturing (SLM)

The democratization of consumer 3D printing has changed the function of deposited parts and the way we design them. SLM-type laser additive manufacturing makes it possible to produce ceramic, metallic or polymer parts from the fusion of successive layers of powder. Used for the production of small parts, SLM machines allow high dimensional precision to be achieved on parts of high geometric complexity. Industrial Laser Systems is one of the players in this field and for several years has been manufacturing SLM type machines for a large internationally renowned industrialist as well as special machines for research laboratories.

Additive manufacturing machines on powder beds