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Metal 3D Printing for Production

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Update time : 2019-09-16 12:48:24

With the development of technology and the application of promotion and application, the direct manufacture of metal functional parts by rapid prototyping has become the main development direction of rapid prototyping. The main metal 3D printing processes currently available for the direct fabrication of metal functional parts include: Selective Laser Sintering (SLS), Direct Metal Laser Sintering (DMLS), Selective Laser Melting (Selective) Laser Melting, SLM) technology, Laser Engineered Net Shaping (LSS) technology and Electron Beam Selective Melting (EBSM) technology.

Selective laser sintering (SLS)

Selective laser sintering, as its name suggests, uses a metallurgical mechanism that is a liquid phase sintering mechanism in which the powder material partially melts, the powder particles retain their solid phase core, and pass through subsequent solid phase particle rearrangement and liquid phase solidification. Bonding achieves powder densification.

Laser Selective Melting (SLM)

The basic principle of laser selective melting technology is to design a 3D solid model of the part by using 3D modeling software such as Pro/e, UG, CATIA, etc., and then slice the layered software to obtain the contour of each section. Data, the filling scan path is generated from the contour data, and the device will control the laser beam selection area to melt the metal powder materials of each layer according to the filling scan lines, and gradually stack into three-dimensional metal parts. Before the laser beam starts scanning, the powder laying device first pushes the metal powder onto the substrate of the forming cylinder. The laser beam then fills the scanning line of the current layer, and the choosed area melts the powder on the substrate to process the current layer, and then the forming cylinder is lowered one by one. The distance between the layers is thick, the distance from the powder cylinder is increased by a certain thickness, and the powder coating device lays the metal powder on the processed current layer. The equipment transfers the data of the next layer of contour for processing, so that the layer is processed until the whole The part has been processed.

Laser near net shape (LENS)

Laser near net shape (LENS) technology uses laser and powder transport simultaneously. The computer slices the 3D CAD model of the part to obtain the 2D plane contour data of the part, which is converted into the motion track of the CNC table. At the same time, the metal powder is sent into the laser focusing area at a certain powder feeding speed, and is rapidly melted and solidified. The layers are superimposed by points, lines and surfaces, and finally the near-net shape part body is obtained, and the formed part does not need or requires a small amount of processing. be usable. LENS can achieve moldless manufacturing of metal parts, saving a lot of cost.


https://www.infignos.com/templates/updatelistingnow.cfm?email=ryanlee901213@gmail.comShenzhen Kangda Precision Manufacturing Co.,Ltd.,Machining Manufacturer,Shenzhen,FL