Study On Mechanism Of Low-Voltage Electromagnetic Compaction Of Powder Materials And Mechanical Performance Of Its Products

Powder metallurgy is an effective manufacturing method for all kinds of high-performance materials, special-function materials and materials working under extreme circumstances. The author applies the method of Low-voltage Electromagnetic forming onto Powder Materials Compaction and changes the voltage of traditional High-voltage Electromagnetic forming from thousands of volts to hundreds. At the same time, it augments the capacitance to insure the discharging energy that needed. Therefore, it results in the decrease of complexity and volume of the equipments and the notable decline of the manufacturing costs. On the contrary, the security and reliability are increased accordingly, and the life-span of the loop is prolonged because of the decline of the amplitude of discharging current.Based on the analysis of domestic and overseas situation of electromagnetic forming and powder compaction, the author uses the academic analysis combined with experimental research to work. And the produce's density, anti-press intensity and thickness equality mechanism are studied systematically.The experiments are carried out on the machine made by ourselves. And how the electronic parameters such as discharging voltage and consistence act on the produce's density and thickness equality has been analyzed systemically, and the inherent relation between electromagnetic compaction and normal compaction are studied too. Therefore, a method that can improve the density of the powder produce is provided. After the anti-press intensity experiments, the author analyzed the relation between anti-press intensity and the discharging energy. Afterwards, the author analyzed the thickness mechanism, equality and their effect on the performance of the produce in microcosmic world by the phase experiment.