Research On The Electromagnetic Compaction Machine And The Applications In The Function Ceramic Forming

Ceramic clay body forming has been an important key in function ceramicmaterials producing. It has been very important that the stand or fall of forming forfunction ceramic can affect all kind of the function ceramic's performances.Low-voltage electromagnetic compaction of function ceramic powder waslodged by the study group for the first time through researching the status in quo ofstudying in the sintering function ceramic powder and compaction of powdermaterials, and summed up our school's researching on the function ceramics,electromagnetic forming equipments, powder metallurgy, and so on. It is a newmethod for function materials forming, which has inosculated electricity, mechanics,powder metallurgy and material science.In this paper, the author has done series researches on the key technologies of thelow-voltage electromagnetic compaction machine. The idea was lodged firstly in theworld, which use the principle of charge-pump and the development platform ofembedded applications based on SCM in the design of the low-voltage electromagneticcompaction machine's power. In the results, the heavy transformer has beenabnegated. The control precision of discharge voltage has been improved. Thecurrent-limiting-analogous charge has been come true.The author has studied the effect of the power's output by PWM signal with thestate-space average model. The state-space average equations was calculated, and selected theparameter of the power's components with computer simulation. The theory ofapproximately steady current control was lodged.The control project is lodged by computer with correlative theories.Through the study on powder compaction experiment, and analyzed therelationship between the total number of the loop, the amplifier's cone angle, thedischarge voltage, second compaction and the density of the ceramics.Lastly, the low-voltage electromagnetic compaction machine was used tocompact the piezoelectricity ceramics powder for study the compaction effects bydifferent compaction parameters and proved the electromagnetic compaction is betterthan pressed-green.