Computer Simulation of Electromagnetic Force Efiect on Melting Pool in Layer-laminated Deposition Process

A new computer simulation was carried out for investigating the electromagnetic force efiect on melting pool in layer-laminated deposition process. Because of the gravity and the ∞uid motion of molten metal in melting pool during the layer-laminated deposition process without supporting, it will di-cult to form complex shape parts. So a new scheme which using the magnetic fleld to restrict the melting metal ∞ow was proposed. The method designed a restricted equipment of magnetic fleld in order to prevent and reduce the ∞uid ∞ow and collapse of the melting pool. Compared with traditional method, as the height of the deposition shape increased, the process restricted with electromagnetic force can make the shape of parts more complex and more accurate. The changes of the electromagnetic force fleld were simulated with the flnite element analysis, while the efiects of electromagnetic force on forming process were discussed. Simulation and experimental results show that the control system is feasible and practicable. The electromagnetic force will decrease the post-treatment procedure and could contribute to the process of layer-laminated deposition shaping. Electromagnetic Forming Technology was founded in the late 50's. In the age of 60 to 70, it has been rapid development. In the 80's in the United States, the former Soviet Union the technology has been systematized and standardized.The technique Using the electromagnetic force which generated by alternating electromagnetic fleld to constraint the forming of melting metal has been widely used in smelting and forming of aluminum and many chemical active metal. However, the current electromagnetic forming technology only available on forming of simple shape parts. So this paper discuss the research of electromagnetic force on melting pool in layer-laminated deposition process, this method can make complex parts more easier (1{4).