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244. Laser sintering of metal powder conditions

Status: The U.S. metal powder products DTM main features of the company
1. Material composition: Cover model 1080 carbon steel
2. Application: production of metal injection molding and metal die-casting mold core
3. Production of the main features: fully dense, to achieve the strength and hardness of aluminum; modulus of steel with similar thermal conductivity; capable of machining, welding, surface treatment and heat treatment; degree of polishing the surface roughness to Ra = 0. 1um; main dimensions, tolerance is 0. 25mm
4. Application examples: injection mold plastic parts; extrusion die and injection mold with the mold trial; non-ferrous metal parts to suppress mode
5. Molding productivity: under normal conditions, the production of more than 100,000 plastic mold; 200 to 500 pieces of aluminum, zinc or magnesium products die. And the North University of China launched a follow-mode The Cultivation of the laser sintering of metal powder technology.
University of North follow-mode performance of metal powder mainly:
1. Ingredients: 1Cr18Ni9Ti cover mold powder
2. Appearance: Grey powder
3. Size: 160 mesh ~ 300 mesh
4. Laser sintering temperature of 140 degrees celsius, the sintering deformation is small, forming dimensional accuracy ± 0. 15mm.

Using rapid prototyping method can easily and quickly create prototypes required, the depth of the laser sintering: sintering directly affect the quality of one of the important factors, the appropriate sintering sintering depth of good quality is a prerequisite, the depth must be greater than the sintering shop powder thickness, to ensure that laser energy can be dissolved through the current layer, so that adjacent layers have sintering, otherwise you will have strength of layered lead to precision molding worse, not even formed, so the factors affecting the sintering depth study, through reasonable selection of process parameters to control the sintering depth is of great significance.