arc melts the metal filaments while simultaneously a high velocity gas flows through the arc zone and propels the atomized metal particles on to the RP pattern. The spray pattern is either controlled manually or automatically by robotic control. Metal can be applied in successive thin coats to very low temperature of RP patterns without deformation of geometry. Current wire arc technologies are limited to low temperature materials, however as well as to metals available in filament form. Vacuum Plasma Spray technologies are more suited in higher melting temperature metals. The deposition material in this case comes in powder form which is then melted, accelerated and deposited by plasma generated under vacuum. Fig: Wire Arc Spraying Epoxy Tools: Epoxy tools are used to manufacture prototype parts or limited runs of production parts. Epoxy tools are used as:- Moulds for prototype injection plastic Moulds for casting Compression moulds Reaction Injection Moulds The fabrication of moulds begins with the construction of a simple frame around the parting line of RP model. Screw gauges and runners can be added or cut later on once the mould is finished. The exposed
arc melts the metal filaments while simultaneously a high velocity gas flows through the arc zone and propels the atomized metal particles on to the RP pattern. The spray pattern is either controlled manually or automatically by robotic control. Metal can be applied in successive thin coats to very low temperature of RP patterns without deformation of geometry. Current wire arc technologies are limited to low temperature materials, however as well as to metals available in filament form. Vacuum Plasma Spray technologies are more suited in higher melting temperature metals. The deposition material in this case comes in powder form which is then melted, accelerated and deposited by plasma generated under vacuum. Fig: Wire Arc Spraying Epoxy Tools: Epoxy tools are used to manufacture prototype parts or limited runs of production parts. Epoxy tools are used as:- Moulds for prototype injection plastic Moulds for casting Compression moulds Reaction Injection Moulds The fabrication of moulds begins with the construction of a simple frame around the parting line of RP model. Screw gauges and runners can be added or cut later on once the mould is finished. The exposed
140325495-Rapid-Prototyping.docx