techniques involved in 3d printing
With the wide application of 3D printing technology in the industrial field, the advantages of 3D printing technology have also become the focus of attention.
From fashion to aerospace, from manufacturing to education, 3D printing has provided a new dimension for prototyping.
Since the 1980 s, 3D printing technology has been used by the manufacturing industry, but in the past few years, the application of 3D printing technology has expanded.
3D printing is a technology that consists of several different processes and technologies.
The most commonly used 3D printing technologies include:
Selective laser sintering
This method builds a prototype from a powder material by heating the material with a laser.
The powder used can be metal, plastic, ceramic or even glass.
Selective Laser Sintering (SLS)
It is suitable for rapid forming and small batch production of industrial parts.
Molten deposition model
This method uses metal wire or plastic filament and works on a computer-controlled mechanismaided machines.
The melted material is extruded from the nozzle into a layer, forming a solid structure after the layer becomes hardened.
Invented in 1980 by Scott Crump, he patented the method and founded his own 3D company Stratasys.
Model of molten deposition (FDM)
Also known as thermoplastic deposition.
By Chuck Hull in mid-
1980, stereo molding (SLA)
Ushered in the concept of rapid prototyping.
In this method, each layer is created with a UV laser and the parts are constructed with a liquid photo polymer.
The SLA was patented by Chuck Hull, who also commercialised the technology with his company 3D Systems Inc.
Manufacturing of laminated objects-
Developed by Helisys
It is a fast forming method.
In this method, the adhesive layer of the material is bonded together and then cut into a specific shape using a laser cutter or knife.
The materials used in this method are usually laminated materials of plastic, paper or metal.
This is a low-cost prototyping method.
Digital Light Processing
One of the best ways to achieve high resolution and accuracy in a prototype is digital light processing (DLP)
Expensive compared to other methods.
It uses a liquid polymer, which becomes a solid when exposed to light.
Depending on the size, budget and material involved, you can choose the method of 3D printing.
The main factors that affect the choice of 3D printing technology are refinement and cost.