Additive manufacturing is a transformational approach to industrial production that enables the creation of lighter, strong parts and systems.
This is yet another technical progress which is possible by transmitting analog to digital processes.
In recent decades, communication, imaging, architecture and engineering have all cross their own digital revolutions.
Now, AM can bring digital flexibility and efficiency for manufacturing works.
Additive Manufacturing uses direct computer-aided-design (CAD) software or 3D object scanner to store precise geometric shapes, to store layers on the layer.
As its name implies, Additive Manufacturing adds materials to make an object.
On the contrary, when you make an object through traditional means, it is often necessary to remove the material through milling, machining, carving, shaping or other means.
While Additive Manufacturing seems to be new to many, it’s actually around for several decades. In the right applications, additive manufacturing delivers a perfect trifecta of better performance, complex geometrical and simplifies construction.
Consequently, opportunities for those who are actively embracing Additive Manufacturing are abound.
What is additive manufacturing?
Additive manufacturing, also known as 3D printing, is a process that creates a physical object from a digital design.
How Does Additive Manufacturing Work?
The term “Additive Manufacturing” refers to techniques that at one time develop three-dimensional objects as a superfine layer.
Each successive layer bond binds or partially melt the preceding layer of the melt material.
It is possible to use different materials including material powder, thermoplastic, ceramic, composites, glass, and even adobe-like chocolate.
Objects are digitized by computer-aided-design (CAD) software that is used to create the .stl files that essentially “slice” objects into ultra-thin layers.
This information directs the path of a nozzle or print head as it properly stores the material on the preceding layer.
Or, a laser or electron beam melts selectively in a bed of powder material or partially melts.
As soon as the material is cool or cured, they together form a three-dimensional object.
The journey from the .stl file to the 3D object is revolutionizing change in manufacturing.
The steps taken by the mediator, such as the formation of the mold or die, is the cost time and money.
Additive Manufacturing Processes
There are a variety of different additive manufacturing processes:
Extrusion of Materials:-
Extrusion of materials is one of the most famous additive manufacturing processes.
Spool polymers are remove, or pull through a hot nozzle place on a movable hand.
The nozzle runs horizontally, while the bed runs vertically, allowing the molten material to make the layer after the layer.
Proper adhesion between layers is through the use of precise temperature control or chemical bonding agents.
Directed Energy Deposition:-
The process of direct energy deposition (DED) is similar to the exit of the material, although it can be used with various types of materials, including polymers, ceramics and metals.
An electron beam gun or a four or five-axis mounted laser melts either wire or filament feedstock or powder.
With material jetting, a print head moves forward and backward, much like the 2D inkjet printer. However, it usually runs on x-, y- and z-axes to create 3D objects.
Layers are hard because they are cool or are cured by ultraviolet light.
The binder jetting process is similar to material jumping, except that the print head leaves the optional material of the powder material and a liquid binder.
Laminated object construction (LOM) and ultrasonic additive manufacturing (UAM) are two sheet lamination method.
LOM uses alternative layers of paper and adhesive, while UAM imposes thin sheets of metal assembled through ultrasonic welding.
LOM gives excellence in making objects ideal for visual or beauty modeling.
UAM is a relatively low temperature, low energy process, which is used with various metals, including titanium, stainless steel and aluminum.
With vat photopolymerization, an object is made in a liquid resin photopolymer in a vat.
A process called photocyramination, using microscope-directed ultraviolet light (UV) fixes every microphone resin layer.
Powder Bed Fusion:-
Powder bed fusion (PBF) technology is used in various types of AM processes, including direct metal laser conditioning (DMLS), selective laser sintering (SLS), selective heating sensing (SHS), electron beam melting (EBM) and direct Metal laser melting include (DMLM).
These systems use laser, electron beam or thermal print heads to melt the material in a three-dimensional space or to partially melt the ultra-fine layers.
As soon as the process is finished, extra powder is destroyed by the object.