How to cut large thickness metal material

How does the wire cut edm process large thickness metal materials
This has always been a problem that wire cutting machine processes the large thickness work-pieces.Neither short circuit and wire broken nor the cutting speed could not go up.There are several causes for cutting large thickness pieces:
1.There are errors in Machine body,guide wheel ,wire frame,and wire drum.So the range and frequency of molybdenum wire will increase,that make the molybdenum wire contact with work-piece directly and are short-circuit,then wire edm machine will start short-circuit back up function;The large thickness work-pieces are usually big and heavy,they are clamped on workbench,which make the fixtures and worktable deform.the X，Y axis true moving distance is quite different from the wire cut control system calculation distance. Finished products can not meet the quality requirements.
2.Working solution used methods or selection for wire edm machine are incorrect,If the working fluid cannot flow into the work-area where electric discharge between electrode wire and work-piece rapidly,the cooling and clearance function may become bad,and the machine cannot process constantly.
3.wire cut edm pulse power supply must output more enger to cut the large thickness piece than general metal piece.but many manufactures for wire edm cannot reach and develop the excellent performance of pulse power supply.First the electrode can discharge electric with metal material,but not cut into the metal material after a while.
4.Because of material or large volume,The large thickness work-piece might deform during processing, This can cause short-circuit and back up.
The 3rd is most key in the four factors above.  The pulse power supply is the core technology of wire cut edm machine,and is core competitiveness for wire cut manufactures.Many users of wire edm had bought various of wire cutting machine pulse power supplies performance are good or bad.Now,I am offering some advice how to cut the large thickness work-piece.
1.Setting principle for Pulse power supply,adopt the high voltage transmission——110V,pulse power supply energy output formula:power rate=V*A*pulse width.So increase the pulse width.
2.Adopt a more liquid water base working solution for WEDM than before,or ointment for specially for wire edm.and purchase a bigger capacity water tank with high-pressure pump.
3.We must measure the pulsation of the wire drum,the range is less than 0.05mm,and replace the guide pulley assembly,power feed contact,molybdenum wire.
4.Correct the molybdenum wire verticality and adjust the tension of molybdenum wire after clamping the thick work-piece on worktable.