Mold Rapid Prototyping latest technology

1. Principle of selective laser melting technology

Rapid Prototyping technology in recent years developed an advanced manufacturing technology. It is the CAD, CNC, laser and new materials, integration of the disciplines. Rapid prototyping is an automated manufacturing technology, it is by the CAD model directly through a special manufacturing process to create complex shapes technology, general three-dimensional solid parts. The main materials used in forming the liquid photosensitive resin, wax, paper, alternative materials.

Metallic powders by selective laser melting (SLM-Selective Laser Melting) technology is based on the general principles of rapid prototyping using CAD software to design parts of the three-dimensional solid model, and then based on specific process requirements, in accordance with a certain slice thickness of model layer processing, its separated into a series of two-dimensional level, and then two-dimensional level, data processing information and join the machining parameters, generate NC code input machine to control the movement of machine in order to complete the various levels of molding manufacturing, until the processing phase compared with the CAD model the same prototype or part.

2. Selective Laser Melting (SLM) technology, features and technical specifications

This method is selective laser sintering (SLS) developed on the basis of, but distinct from selective laser sintering technology, the key technical features embodied in the following aspects:

l made directly to the terminal metal products, eliminating the need for intermediate links;

l available metallurgical bonding metal entity, the density close to 100%;

l SLM manufactured workpiece has a high tensile strength; a lower roughness (Rz30-50 mm), high dimensional accuracy (<0.1 mm)

l for a variety of complex shapes of workpieces, especially suitable for complex shaped internal structures (such as cavity), using traditional methods can not produce the complex work;

l suitable for single piece and small batch rapid prototyping molds and parts.

3. Selective Laser Melting (SLM) for technical use

Rapid prototyping by selective laser melting technology is a mold or metal parts forming technology, but also simplify the link between Terminal Technology. Laser Rapid Prototyping is the inevitable trend of development. The artifacts produced by the polishing or simple surface treatment can be directly Die, workpiece or medical use of metal implants. The technology would apply mainly to the rapid development and application of mold products, prototype of the rapid design and automated manufacture of the tool to ensure the rapid manufacture. No CNC milling, EDM need, without any special tooling and tools, directly from the prototype and complex tools and cavity created, in general, using selective laser melting technology, rapid prototyping, mold manufacturing time and costs are transmission technology for traditional 1 / 3. And that the technology in composite materials, gradient materials, parts manufacturing entities also have a very good potential for development.