MJF multi-shot melting
Compared with SLS selective laser sintering process, the materials used are nylon-based polymer materials. The difference is that in addition to molding powder, auxiliary agents and refined agents are added. When the previous layer is still in a molten state, this process is used to print a new material layer and the printing agent on it, so as to ensure the perfect fusion of the two layers of materials, thus obtaining durable, high-quality, clean and powerful 3D printing parts.
principle of operation
First spread the powder layer, then spray the solvent, and then spray the material for fine treatment, so as to ensure the fineness of the printed edge and the ideal strength and texture of the finished product. When heat sources are involved, these steps will be repeated until the whole object is printed in layers. Spray the "fluid" onto the printed area (i.e. the cross section of the printed matter) to completely dissolve the powder material, and then spray the "fine powder" onto the outer edge of the printed area to provide thermal insulation. In this way, the unprinted powder can be kept loose, the reuse rate of powder can be increased (80%, the normal SLS rate is about 50%), the surface of the printed layer can be smoothed, and the printing fineness can be improved.
Comparison of advantages and disadvantages
Advantages:
Suitable for small batch/custom production of parts with complex mechanism and special geometry.
Excellent material strength, no need to add processing support.
Short processing period and low cost.
Optimize structure and open mind
Disadvantages:
Surface quality is not as good as SLA resin 3D printing
Available materials are temporarily limited to industrial applications.
Available materials are limited to color, light gray or charcoal black.
Optional materials
Highly reusable PA12 nylon material
Features: Excellent strength, secondary processing and assembly, cement color appearance may appear.
Typical application: 3D printing performance test, small batch production.
