Rapid prototyping is a group of technologies used to quickly build models, which is the physical part of buildings using three-dimensional computer aided design (CAD). Other technologies used in rapid prototyping in Shandong include molding, casting, high-speed machining and extrusion. Different types of rapid prototyping designs:
1. Stereolithography Technology (SLA)
SLA is a rapid prototyping manufacturing process with low price and high speed. It is the first type of 3D printing in history. SLA uses a can of photosensitive liquid that turns into a solid when in contact with computer-controlled ultraviolet radiation. Once SLA parts solidify, they cannot be turned back into liquid; This process is irreversible.
2. Selective laser sintering (SLS)
SLS is also a rapid prototyping manufacturing technology, suitable for plastic and metal molding manufacturing. SLS uses high-power lasers to heat and sinter powder layers to create a molding. It is worth noting that SLS products are much weaker than SLA molding. However, SLS is much cheaper, requires less time and labor, and provides high productivity. SLS parts are very rough and require more precision machining after obtaining the final part.
3. Material Spray or Melt Deposition Molding (FDM)
Material spraying is also a rapid prototyping manufacturing process, which is fast, reasonable, easy to use and cheap. FDM is good for product development. FDM uses thermoplastic wire melted inside the printing nozzle barrel to create a molding. The printer works by moving the nozzle back and forth. By using a computer deposition program, plastic is layered to form a shape. picture
4. Powder Bed Fusion (PBF) or Selective Laser Melting (SLM)
SLM is a common type of rapid prototyping manufacturing. This method is very popular in aerospace, automotive, defense, and medical companies. It is a popular method because of its lower cost and the ability to manufacture high-quality parts. This method uses high-power or electron beams to melt and layer the adhesive with the powder to create production parts or forming. PBF uses power based materials such as copper, aluminum, and stainless steel.
5. Sheet Lamination or Laminated Object Manufacturing (LOM)
Compared to SLS and SLM, sheet lamination is not as complex. This process does not require you to achieve the desired results in a specially controlled environment. The working principle of sheet lamination is to use a laser beam to place layers of metal, plastic, and ceramic cutting materials together to create the required CAD design. Each layer is glued together until the entire component is completed. However, this method is labor-intensive and requires a significant amount of time.
6. Digital Light Processing (DLP)
The DLP and SLA methods are almost identical. DLP uses resin polymerization and a beam of light for curing. The light source of DLP comes from a projector, while the light source of SLA comes from a laser beam. DLP is cheaper and faster than SLP, but it requires more infrastructure in terms of post curing.
Rapid prototyping manufacturing ensures that expensive tools and settings are not required. The same 3D printer can be used to produce different geometric shapes for molding. It greatly reduces design defects and errors. If you have any doubts or needs regarding this, please come to our website http://www.jrjmockup.com consulting service