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ADDITIVE MANUFACTURING

Additive manufacturing (AM), also known as 3D printing, is a transformative approach to industrial production that enables the creation of lighter, stronger parts and systems. It is yet, another technological advancement made possible by the transition from analog to digital processes. In recent decades, communications, imaging, architecture and engineering have all undergone their own digital revolutions. Now, AM can bring digital flexibility and efficiency to manufacturing operations.

Additive manufacturing uses data computer-aided-design (CAD) software or 3D object scanners to direct hardware to deposit material, layer upon layer, in precise geometric shapes. As its name implies, additive manufacturing adds material to create an object. By contrast, when you create an object by traditional means, it is often necessary to remove material through milling, machining, carving, shaping or other means.

Although the terms “3D printing” and “rapid prototyping” are casually used to discuss additive manufacturing, each process is actually a subset of additive manufacturing.

While additive manufacturing seems new to many, it has actually been around for several decades. In the right applications, additive manufacturing delivers a perfect trifecta of improved performance, complex geometries and simplified fabrication. As a result, opportunities abound for those who actively embrace additive manufacturing.

Reposted from GE Additive 

HOW DOES ADDITIVE MANUFACTURING WORK?

The term “additive manufacturing” references technologies that grow three-dimensional objects one superfine layer at a time. Each successive layer bonds to the preceding layer of melted or partially melted material. Objects are digitally defined by computer-aided-design (CAD) software that is used to create .stl files that essentially “slice” the object into ultra-thin layers. This information guides the path of a nozzle or print head as it precisely deposits material upon the preceding layer. Or, a laser or electron beam selectively melts or partially melts in a bed of powdered material. As materials cool or are cured, they fuse together to form a three-dimensional object.

GE Additive specializes in developing Powder Bed Fusion (PBF) machines for the additive manufacturing of metal parts. The three processes GE offers with in the PBF category, recognized by the American Society for Testing and Materials (ASTM), include: Direct Metal Laser Melting (DMLM), Electron Beam Melting (EBM), Binder Jetting.

In all of GE Additive’s machines the process involve the spreading of the metal powder layer by layer and uses either a laser or electron beam to melt and fuse powder together to create a part. The process repeats until the entire part is created. Loose or unfused powder is removed during post processing and is recycled for the next build.

Reposted from GE Additive 

TYPES OF METAL ADDITIVE MANUFACTURING PROCESSES

POWDER BED FUSION

Powder Bed Fusion (PBF) technology is used in a number of additive manufacturing (AM) processes. This includes direct metal laser sintering (DMLS), selective heat sintering (SHS), selective laser melting (SLM), electron beam melting (EBM), and direct metal laser melting (DMLM). These systems use lasers, electron beams or thermal print heads to melt or partially melt, fine layers of powder material to build up a three dimensional (3D) object. Multitrade 3D Systems supplies the laser powder bed fusion (L-PBF) and Electron Beam Melting (EBM) machines from GE Additive’s Concept Laser and Arcam.

DIRECTED ENERGY DEPOSITION

Directed Energy Deposition (DED) is also used in a number of metal additive manufacturing (metal 3D Printing) processes like Laser Metal Deposition (LMD), Laser Engineered Net Shaping (LENS), Wire-Arc Additive Manufacturing (WAAM), and Cold Spray Additive Manufacturing (CSAM). The more commonly used DED process makes use of a laser to melt a powder stream or wire directed at a laser focal point.

Multitrade 3D Systems supplies the Directed Energy Deposition machines from Meltio in the form of the Meltio M450, and Meltio Engine for Robots or CNC machines.

Multitrade 3D Systems is able to sell and support metal additive manufacturing (metal 3D printing) machines and systems from GE Additive and Meltio all over South Africa. We can also supply specific metal AM machines into the following African countries: South Africa, Lesotho, Botswana, Namibia, Zimbabwe, Mozambique, Mauritius, Zambia, Angola, Tanzania, Kenya, Ethiopia, Congo, Democratic Republic of Congo, Uganda, and Rwanda. Contact us using the details below for more information or if you are interested in one of our systems from GE Additive or Meltio.

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