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UNIT 45 Additives materials - Coggle Diagram
UNIT 45 Additives materials
metals
Gold
silver
Silver is lustrous, soft, very ductile and malleable metal. It has the highest electrical conductivity of all metals,
Precious Metal Additive Manufacturing - PMAM - 3D
laser metal deposition (LMD)
Titanium
Titanium, one of the most common metals found on Earth, has excellent mechanical properties and allows the creation of very light components and structures with excellent corrosion resistance.
Precious Metal Additive Manufacturing - PMAM - 3D Printing
Steel
Stainless steel used in additive manufacturing exhibits a number of mechanical properties favored in a variety of automotive, industrial, food processing and medical applications, including hardness, tensile strength, formability and impact resistance.
EBM technique produces dense, super-strong, waterproof parts
Aluminium
They possess high strength-to-weight ratios, and they also demonstrate good resistance to metal fatigue and corrosion.
Aluminum is sintered in the Direct Metal Laser Sintering (DMLS) process or melted in the Selective Laser Melting (SLM) process.
polymers
polylactic acid
pla has a high mechanical strength and low glass transition and melting temperature. In addition PLA has an excellent performance of transfer of gases
Material Extrusion Additive Manufacturing
polyamides
Polyamides (PAs) are an important class of high-performance engineering thermoplastics produced either by the reaction of a diacid with a diamine or by ring-opening polymerization of lactams. They can be aliphatic, semi-aromatic or fully aromatic themroplastics. The aromatic polyamides, called aramids, have higher strength, better solvent, flame and heat resistance and greater dimensional stability than the all aliphatic amides (Nylon) but are much more expensive and more difficult to produce.
Polyamide casting molds a generally additively manufactured master model in silicone. A monomer is cast into this silicone tool, mixed with filler material, additives as well as an activator and catalyst. The thermoplastic materials are polymerized, without pressure, directly in the tool within a few minutes. The discharge quantity amounts to about 15 pieces per mold. Undercuts are possible by forced demolding.
Acrylonitrile Butadiene Styrene
It is a synthetic monomer produced from propylene and ammonia. This component contributes to ABS chemical resistance & heat stability. Good insulating properties
3D FDM or FFF printers and comes in the form of a long filament wound around a spool. Operating the 3D printer is fairly simple: the ABS strand is guided into an extrusion head or extruder that heats the ABS plastic to its melting point in order to liquefy it. Once liquefied, the material is deposited layer by layer on a printing platform (which may or may not be heated). By using such a simple manufacturing process, creating plastic products becomes quite easy.
composites
cerments
High melting points (so they're heat resistant).
Great hardness and strength.
Considerable durability (they're long-lasting and hard-wearing).
Low electrical and thermal conductivity (they're good insulators).
Chemical inertness (they're unreactive with other chemicals).
Thus far, selective laser sintering/melting (SLS/SLM), binder jet (3D printing), laser engineering net shaping (LENS), and direct laser deposition (DLD), as powder-based processes, have been used for cermet fabrication.
carbon fibre
Carbon fibers have several advantages including high stiffness, high tensile strength, low weight to strength ratio, high chemical resistance, high temperature tolerance and low thermal expansion.
deposition modelling
glass fillers within polymers
Fibrous fillers are used in polymer materials primarily to increase their mechanical strength (usually glass fibres), but also to increase their thermal conductivity (metallic fibres or carbon fibres) or to reduce the friction coefficient (PTFE fibres, carbon and graphite fibres) and thereby to improve the conditions of dissipation of frictional heat
epoxy resin
The primary reason for epoxy’s popularity is its superb mechanical strength. Welding is often the only alternative. Epoxy is nearly always cheaper and faster than welding.
Epoxy also has excellent resistance to chemicals. After setting, there is no worry of a chemical reaction that will weaken the seal. It also resists heat. That resistance makes it ideal for electronics and electrical systems and other industrial applications.
material jetting
