I believe that most people have heard of 3D printing technology, but there are very few people who really understand 3D printing technology. After all, for the general public, 3D printing technology is too professional, and the chance of encountering it is not great, so come today Give everyone a detailed science knowledge about 3D printing technology.

1. What is 3D printing technology

In fact, 3D printing technology is one of many rapid prototyping technologies, also known as additive manufacturing. way to construct objects with advanced technology.

2. The working principle of 3D printing

3D printing is usually realized by using digital technology material printers. In fact, it works basically the same as ordinary printers, but the printing materials they use are different. For example, the printing materials of ordinary printers are ink and paper, while 3D printers contain What is used is real raw materials such as metal, ceramics, plastic, sand, etc. After connecting with the computer, the printed materials are superimposed layer by layer through computer control, so that the blueprint on the computer can be turned into a real object.

3. Common 3D printing technologies and their characteristics

1) FDM technology: that is, fusion lamination technology, which uses high temperature to melt materials, extrudes them into filaments through the printing head, and accumulates them on the component platform. The world’s first 3D printer based on FDM technology was launched by the well-known 3D printing company Stratasys, which marks that FDM technology has officially entered the commercial stage. In the following 20 years of development, Stratasys has always kept up with market changes, and has continued to work hard in the research and development of 3D technology innovation. It has successively launched F120 3D printers, F123 3D printers, F900 3D printers, etc., which can meet the printing needs of different enterprises and users.

Features of FDM technology:

●Supported production-grade thermoplastics are mechanically and environmentally stable;

●Complex geometries and inner cavities that cannot be manufactured by other technologies can be realized;

●Perfect stability and repeatability, supporting direct production in small batches;

2) PolyJet technology: Polymer injection technology, which is to spray photocurable resin from the nozzle. After the injection is completed, it is cured by ultraviolet light irradiation. PolyJet uses array nozzles, and can even spray different materials at the same time to achieve multiple materials and multi-colors. Materials are printed simultaneously. For example, the new-generation J850 3D printer developed by Stratasys can achieve 500,000 colors and a layer thickness of 14 microns. Enterprises can use it to quickly produce prototypes that are consistent with the appearance of the final product.

Features of PolyJet technology:

● generate complex shapes, fine details and smooth surfaces;

●It can print multiple materials at the same time to achieve multiple colors, gradients and textures;

●Quick production of 3D printing molds ;

3) SLA technology: that is, photocuring technology, which uses ultraviolet light to irradiate liquid photosensitive resin to undergo polymerization reaction, to solidify layer by layer and generate a three-dimensional entity.

Advantages of SLA technology:

●The molding process is highly automated;

●The dimensional accuracy of the SLA prototype can reach ±0.1mm, and the surface quality is excellent;

●The system has a high resolution and can make models or parts with complex structures;

4. Current status and development prospects of 3D printing technology

In recent years, 3D printing technology has continued to develop and mature, and the types of 3D printing materials have become more and more abundant. Large-scale professional 3D printing companies such as Stratasys have developed many 3D printing equipment that can reduce enterprise costs and improve enterprise production efficiency. , has been widely used in manufacturing, aerospace, automotive, medical, education, dental and other fields. In the future, the application field of 3D printing technology will be further expanded, printing materials will be more diversified, and the functions of printing equipment will be more perfect, and it will have a profound impact on traditional production methods and human life, leading the global A new wave of revolution in manufacturing.

The above is all the content to be shared today. I believe that after reading it, you will have a deeper understanding of 3D printing technology. If you have any questions, please leave a message in the comment area for discussion.