References to 3D printing technology, main 3D printing technology methods

What are you referring to?

At present, the main 3D printing technology of Shengzhen.

There are several ways to do this.

Light-curing stereolithography refers to the use of laser beams.

Irradiation of photosensitive resin in a resin tank.

It can be quickly cured from point to line and from line to surface, and then the lifting table lowers the height of one layer and then cures the second layer, so that the layer of superposition is repeated until the whole model is formed. The schematic diagram of its working process is shown in Figure 1.

Layered solid manufacturing uses the sheet as the raw material, and the surface of the sheet is pre-covered with a layer of hot melt adhesive.

During processing, the hot pressing roller hot-pressed the sheet to make it bond with the workpiece that has been formed below, and then use the laser to cut out the cross-sectional profile of the part and the outer frame of the workpiece on the new layer that has just been bonded, and cut out the grid aligned up and down in the redundant area between the cross-sectional profile and the outer frame, after the laser cutting is completed, the workbench drives the formed workpiece to descend and separate from the strip sheet, and the feeding mechanism makes the new layer move to the processing area again, the worktable rises to the processing plane, the hot pressing roller heats, and the number of layers of the workpiece is increased by one layer. The height is increased by one thickness, and the cross-section profile is cut on the new layer. This is repeated until all sections of the part are bonded and cut, and the solid part is manufactured in layers. A schematic diagram of its working process is shown in Figure 2.

Selective laser sintering uses a powder material as a modeling material, which is heated to a temperature close to its melting point during processing, and then the powder is flattened with rollers, and the computer controls the two-dimensional scanning trajectory of the laser beam according to the slicing model of the prototype to selectively sinter the solid powder material to form a layer of the part. After one layer of powder is completed, the working piston is lowered by one layer and the powder spreading system is covered with new powder. Control the laser beam to re-scan the sintered new layer.

Melt molding is the use of electricity to heat the filamentous hot melt material to slightly higher than the melting point temperature, under the control of the computer, the nozzle according to the cross-section profile information, the material is selectively coated on the workbench, after cooling, a layer of stuffy balance section of the workpiece is formed, after the completion of a layer of forming, the nozzle moves the height of a layer of cross-section, and coats the next layer again, so that it is stacked layer by layer until a complete three-dimensional workpiece is formed. A schematic diagram of its working process is shown in Figure 4.

01 Different from traditional mold production, 3D printing is a technology that uses adhesives such as metal or plastic as printing materials and digital models to print layer by layer.

02 With the gradual improvement and maturity of 3D technology, more and more fields have used 3D technology, such as the medical industry, the construction industry and the traditional manufacturing industry, etc., and the application of 3D technology has also brought new development to various industries.

03 In 3D printing, each layer of printing is divided into two steps, the first step is to spray a layer of special glue at the place that needs to be formed, and the second step is to evenly spray a layer of powder, and the special glue and powder are in contact and condensed, so that the model can be printed.

04 3D printing technology has many advantages, it does not require machining, and it does not require any mold to produce any model from the data, so that the construction period can be shortened and productivity can be improved.

D printing (3DP) is a kind of rapid prototyping technology, also known as additive manufacturing, which is a technology that uses adhesive materials such as powdered metal or plastic to construct objects based on digital model files and printing them layer by layer.

D printing is usually achieved by a digital technology material printer. It is often used in mold manufacturing, industrial design and other fields to make models, and then gradually used in the direct manufacturing of some products, and there are already parts printed using this technology. The technology is used in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, GIS, civil engineering, firearms, and other fields.

On January 14, the University of California, San Diego, for the first time, used rapid 3D printing technology to create a spinal scaffold that mimics the structure of the central nervous system, which successfully helped rats recover motor function.

On May 5, China's first successful Long March 5B carrier rocket carried a "3D printer". This is China's first space 3D printing experiment, and it is also the world's first 3D printing experiment of continuous fiber reinforced composites in space.

3D printing technology generally refers to 3D printing.

3D printing (3DP) is a type of rapid prototyping technology, also known as additive manufacturing, which is a technology that uses adhesive materials such as powdered metal or plastic to construct objects based on digital model files by printing layer by layer. 3D printing is usually achieved by using digital technology material printers.

3D printing steps.

3D printing technology is able to present the printed effect vividly.