wire cut edm advantages and disadvantages

wire cut edm advantages and disadvantages
molybdenum wire edm machine is a special cnc machine tool,that can cut the metal conductive materials by electric discharge machining with electrode wire.It has been widely used in industry for more forty years.we will describe the advantages and disadvantages of the wire cut edm machine now.
●advantages:
A.Low investment, a general wire cut edm machine price is from $5000 to $25000 in most cases,and the common work environments are suitable for the wire cut,no thermostatic workshop,no dust-free workshop,so the investment cost is lower than the other precision machine tools.
B.Low cost of use,The molybdenum wire can be re-used for a long time,according our calculation cost of wire cut edm,300 meters a cylinder of molybdenum wire can work at 4-5A current for 7 days,eight hours a day.that means the quantity of molybdenum wire is about 1500 meters per month,the working fluid can be changed twice a month,and the power of wire cut machine 1.5kw per hour in general ,the ZK series medium wire edmmachine with latest electrical controller power is from 1.0 to 1.2kw. And the guide wheels,electric feed blocks need to be changed per three months.so you can calculate the basic cost of one wire cut machine working every month.
C.Easy to operate,traditional operations of wire cut machine include the programming and setting parameters,threading and tension wire,clamping workpiece,calibrating vertical, etc,the setting parameters is most difficult,but the new intelligent programming software of wire cut edm can make it easy hardly,the operator only enter the material name,thickness,diameter of wire data,and control system just can select a group of machining parameters for the workpiece automatically,then begin working.As a edm wire cut machine manufacture for a long time,we had the latest control system, pulse power supply self-developed,and a huge machining database to support the functions of intelligent program and setting parameter.The beginners just can operate the machine after training of two days in general.
D.Used in various fields widely, machining hard metal materials,eg.copper,aluminum,titanium,tungsten carbide,stainless steel.wire edmcan cut complex shape,small slot,taper workpiece,very thick materials,the wire cutting machine can cutting the metal material up to 1.2 meters thick at present.
●Disadvantages
A.processing accuracy and surface finish,the best accuracy of octagon Cr12,40mm thickness is 0.008 to 0.01mm,roughness is Ra≦0.8um,molybdenum wire cut had done.There is still a gap which compare to the brass wire cut edm.because the molybdenum wire would wear when machining the metal products,the diameter of molybdenum wire becomes smaller,that can influence the wire edmworking accuracy and roughness directly.but the diameter of brass wire would not change for ever when the brass wire cut machine working,so the slow wire edmcutting datas are stable and controllable.
B.Automation of installing wire,It is not difficult to install the molybdenum wire on the wire cylinder,but the wire cut operators all afraid that the wire breaks suddenly,that need more time to thread the wire once more.The brass wire cut machines could automatically thread the wire through the guide,wheel and hole of workpiece when the brass wire breaks or runs out.at present,some companies have developed the automatic threading wire mechanism on the machine body,but that technique is not refined.