Injection mould with permeability utilised Metal Laser Sintering Combined with High Speed Milling

This paper describes the fundamental experimental results done on producing injection mould with permeability utilised Metal Laser Sintering Combined with High Speed Milling. The process is one of the layered fabrication processes that uses surface finish milling with every certain thickness interval of a mold. It is therefore suitable for producing molds having deep rib shape. However, mould of this shape have difficulty of venting air in the mould during the injection moulding process. This is due to residue air in the mould is compressed and generates heat thus giving negative effect on the product. By using permeable materials, influence of residue air on the product can be reduced. We confirmed that injection mould with permeability is effective for influence of residue air on the product and discussed in this paper.