Principle and characteristics of forming manufacturing technology

Layered solid manufacturing

The foil of hot melt adhesive is painted on one side, and the parts are heated. In this way, the foil and the surface of the part can be bonded together, and then the data information of CAD layered model can be obtained. Then, the gambling foil is cut by laser beam. After the outline of the designed part is highlighted, it is combined with a new layer of foil After that, the foil and the material that has been cut are bonded by the hot pressing device, and then the laser beam is used for cutting again. After repeating the above process flow, the whole part model can be completed. Layered solid manufacturing process is simple, does not have high processing costs, and has strong reliability, the use of this process in manufacturing industry, can improve work efficiency.


Photosensitive resin is the raw material of stereolithography. Stereolithography manufacturing can effectively control the UV laser of computer, and set the running track as the outline of each boundary layer of parts. The liquid resin can scan the photosensitive material point by point, and then gradually scan from point to line and surface When the first layer is cured, the lifting table should be moved to a thickness of one layer, and the parts should be fixed. Then the fixed resin surface should be scanned again and covered with new liquid grease. After fixing a new layer of resin thin section, repeat the above process continuously until the whole part is manufactured [5]. The precision of stereoscopic manufacturing technology is high. Applying it to modern machinery manufacturing industry can improve the quality of parts, and the utilization rate of raw materials is high. To some extent, this technology can produce more complex and fine parts.

Selective laser sintering

The energy source of this technology is carbon dioxide laser. Under the use of infrared laser beam, the powder film material can be evenly sintered on the processing plane. In this process, the computer can scientifically control the laser beam, and scan the two-dimensional data of different layers in the way of laser scanning [6]. The powder at the scanning position of the laser beam can be sintered into a certain thickness of sheet object. If the laser does not scan the powder, the powder morphology remains unchanged. For the powder without sintering, the height of the lifting table can be adjusted according to the thickness of the cross-section of the object. All the powder on the working table can be scanned by the powder spreading roller, and the two-dimensional data of all layered surfaces can be scanned more than several times. Then, the surplus powder can be removed, and then the required parts can be manufactured through multiple processes such as grinding and drying. Selective laser sintering (SLS) technology has high intensity and precision. If it is applied to modern machinery manufacturing industry, a variety of material parts can be produced.

Melt deposition molding

The melt deposition molding method is to use the nozzle to process the thermoplastic material, make it into filamentous, and then extrude, then the filamentous material will solidify and finally pile up into solid parts layer by layer. Melt deposition molding technology is easy to operate and low cost, which is conducive to improve the production efficiency of parts. At the same time, it has the advantages of environmental protection, and is a reliable mechanical manufacturing technology.

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