[Audio] Hello,I am kiran,
here are the few points on additive manufacturing.. 

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a  vedio  presentation by : b  kiran   kumar   reddy  ( reg  no:1033)

[Audio] What is additive manufacturing?
It is the industrial production process for 3d printing,the computer controlled process that creats three dimensional objects by depositing materials.. 

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Additive manufacturing (AM) or additive layer manufacturing (ALM) is the industrial production process  for 3D printing, a computer controlled process that creates three dimensional objects by depositing materials, usually in layers.

[Audio] How does additive manufacturing work?
These are build by layer by layer ,as with a 3d printing procrss.using computer aided design or 3d object scanners.. 

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Using computer aided design (CAD) or 3D object scanners, additive manufacturing allows for the creation of objects with precise geometric shapes. These are built layer by layer, as with a 3D printing process, which is in contrast to traditional manufacturing that often requires machining or other techniques to remove surplus material.

[Audio] Additive manufacturing processes 1) Binder jetting 2)Directed energy deposition. 

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1. Binder Jetting This technique uses a 3d printing style head moving on x, y and z axes to deposit alternating layers of powdered material and a liquid binder as an adhesive.   2. Directed Energy Deposition Direct energy deposition additive manufacturing can be used with a wide variety of materials including ceramics, metals and polymers. A laser, electric arc or an electron beam gun mounted on an arm moves horizontally melting wire, filament feedstock or powder to build up material as a bed moves vertically.

[Audio] 3) Material extrusion 4) Powder bed fusion 5) Vat polymerisation. 

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3. Material Extrusion This common AM process uses spooled polymers which are either extruded or drawn through a heated nozzle which is mounted on a movable arm. This builds melted material layer by layer as the nozzle moves horizontally and the bed moves vertically. The layers adhere through temperature control or chemical bonding agents.    4. Powder Bed Fusion Powder bed fusion encompasses a variety of AM techniques including direct metal laser melting (DMLM), direct metal laser sintering (DMLS), electron beam melting (EBM), selective laser sintering (SLS) and selective heat sintering (SHS). Electron beams, lasers or thermal print heads are used to melt or partially melt fine layers of material after which excess powder is blasted away.   6. Vat  Polymerisation This process uses a vat of liquid resin photopolymer to create an object layer by layer. Mirrors are used to direct ultraviolet light which cures the successive layers of resin through  photopolymerisation .

[Audio] 6) Sheet lamination 7)Wire arc additive manufacturing. 

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5. Sheet Lamination Sheet lamination can be split into two technologies; laminated object manufacturing (LOM) and ultrasonic additive manufacturing (UAM). Laminated object manufacturing is suited to creating items with visual or aesthetic appeal and uses alternate layers of paper and adhesive. UAM uses ultrasonic welding to join thin metal sheets; a low energy, low temperature process, UAM can be used with various metals such as aluminium, stainless steel and titanium.    7. Wire Arc Additive Manufacturing  Wire arc additive manufacturing uses arc welding power sources and manipulators to build 3D shapes through arc deposition. This process commonly uses wire as a material source and follows a predetermined path to create the desired shape. This method of additive manufacture is usually performed using robotic welding equipment.

Additive Manufacturing Technologies AM technologies can be broadly divided into three types. The first of which is sintering whereby the material is heated without being liquified to create complex high resolution objects. Direct metal laser sintering uses metal powder whereas selective laser sintering uses a laser on thermoplastic powders so that the particles stick together. The second AM technology fully melts the materials, this includes direct laser metal sintering which uses a laser to melt layers of metal powder and electron beam melting, which uses electron beams to melt the powders. The third broad type of technology is stereolithography, which uses a process called photopolymerisation, whereby an ultraviolet laser is fired into a vat of photopolymer resin to create torque-resistant ceramic parts able to endure extreme. 

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Additive Manufacturing Technologies AM technologies can be broadly divided into three types. The first of which is sintering whereby the material is heated without being liquified to create complex high resolution objects. Direct metal laser sintering uses metal powder whereas selective laser sintering uses a laser on thermoplastic powders so that the particles stick together. The second AM technology fully melts the materials, this includes direct laser metal sintering which uses a laser to melt layers of metal powder and electron beam melting, which uses electron beams to melt the powders. The third broad type of technology is stereolithography, which uses a process called photopolymerisation, whereby an ultraviolet laser is fired into a vat of photopolymer resin to create torque-resistant ceramic parts able to endure extreme

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ADDITIVE MANUFACTURING

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here are the few points on additive manufacturing.

avatar

It is the industrial production process for 3d printing,the computer controlled process that creats three dimensional objects by depositing materials.

These are build by layer by layer ,as with a 3d printing procrss.using computer aided design or 3d object scanners.

ADDITIVE MANUFACTURING

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