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Principle of Spark Machine:
In the realm of Electrical Discharge Machining (EDM), the tool electrode and the workpiece are strategically connected to opposite poles of the pulse power supply. Immersed in working fluid or with fluid filled into the discharge gap, when the gap between these two electrodes achieves a specific distance, the applied pulse voltage overcomes the working fluid's resistance, initiating a spark discharge.
In the brief moment of discharge, a substantial amount of heat energy is focused within the micro-channel, reaching staggering temperatures over 10,000 degrees Celsius, accompanied by sharp pressure changes. This intense energy causes localized melting, vaporization, and expulsion of the metal material into the working fluid. The expelled material rapidly condenses into solid metal particles which are then carried away by the working liquid, leaving a minuscule pitting mark on the workpiece surface. The process pauses momentarily as the working fluid restores its insulating state between the electrodes.
Subsequently, the next pulse voltage initiates a discharge at another proximate point between the electrodes, repetitively generating spark discharges. Each pulse discharge erodes an infinitesimal amount of metal, but given the high frequency of thousands of pulses per second, a significant cumulative metal removal is achieved, thus ensuring a certain level of productivity.
Maintaining a consistent discharge gap between the tool electrode and workpiece, the erosion of workpiece metal proceeds as the tool electrode advances towards it. Ultimately, the machined shape mirrors that of the tool electrode. By altering the tool electrode's shape and its relative motion to the workpiece, complex profiles are precisely crafted. Materials with high electrical conductivity, melting points, and ease of processing, such as copper, graphite, copper-tungsten alloy, and molybdenum, are typically used for tool electrodes. While the tool electrode experiences minimal wear compared to the workpiece metal corrosion, it often results in negligible loss.
Serving as the discharge medium, the working liquid is essential for cooling and chip removal during the machining process. Preferred working liquids include low-viscosity, high flash point, and stable performance mediums such as kerosene, deionized water, and emulsion. EDM machines operate on self-excited discharge principles: the spark discharge between the electrodes begins with a high voltage, breaking down the medium as the electrodes near each other, initiating a spark. The discharge results in a sharp drop in resistance and voltage. The spark channel must extinguish promptly (within 10-7 to 10-3 seconds) to preserve the 'cold pole' characteristic, ensuring that the channel energy affects only a minuscule area, thereby causing localized erosion of the electrode. This erosion-based material removal technique is termed EDM.
| Product name | Sparking machine | ||
| Product model | ZNC-450 | ||
| Product technical parameters | |||
| 1.Table size | 700*400MM | ||
| 2(X)Left and right travel (X) | 450MM | ||
| 3(Y)Forward and backward travel (Y) | 350MM | ||
| 4Spindle travel (Z-axis) | 200MM | ||
| 5Head travel | 230MM | ||
| 6Distance from electrode head to table surface | 450MM | ||
| 7Maximum electrode load | 120KGS | ||
| 8Maximum working load | 1200KGS | ||
| 9Machine weight (approx) | 2200KGS | ||
| 10Volume of filter box | 400L | ||
| 11Net weight of filter box | 150KGS | ||
| 12Appearance dimensions (L * W * H) | 1470*1150*1980MM | ||
| disposition | Accessories name and specification | quantity | |
Standard parts for machine tools | 1,Hand oil pump | 1 | |
| 2,Quartz working lamp | 1 | ||
| 3,15''CRTPC15 "CRT display and PC industrial computer | 1 | ||
| 4Patented electrode head | 1 | ||
| 5Electric box remote control | 1 | ||
| 6Operating instruction | 1 | ||
| 7Three axis electronic ruler | 1 | ||
| 8Detail disk | 1 | ||
| 9Control box | 1 | ||
| 10servomotor | 1 | ||
| 11Machine level adjustment pad | 1 | ||
| 12Tools and toolboxes | 1 | ||
FAQ
1.What is the MOQ for your production?
A. The MOQ depends on your requirements for color, logo, and other specifications. For some standard items we have in stock, the MOQ is just 1 set.
2.How to control the quality of the products?
A. We have always prioritized maintaining a high level of quality. The principle we steadfastly adhere to is to provideour customers with better quality, better prices, and better service.
3.What's your main products of your company?
A: We specialize in various machines, such as CNC Machines, Lathe Machines, Milling Machines, Grinding Machines, Vertical Machining Centers, and DrillingMachines, Radial Drilling Machines, Sawing Machines, and more.
4. What are your trade terms?
A: We accept Ex-works, FOB, CFR, and CIF terms.
5.What's the Payment Terms?
A: T/T, 30% initial payment when ordering, 70% balance payment before shipment.
6.What CNC system do you use?
A: We offer FANUC, SIEMENS, MITSUBISHI, SYNTEC, and HCN systems. The choice depends on your preference.
7.How can I choose the most suitable machines?
A: Send us the product drawings and applications, and we will recommend the most suitable machines for you.
8.What kind of package do you offer?
A: Normally in a plywood case to ensure all goods are in good condition. Custom packages are also acceptable.
9. Can your plant do OEM?
A: Yes, we can do OEM and ODM for any customer.
10.How about the warranty?
A: The warranty period is one year after delivery. Even beyond the warranty period, we offer lifetime service for the machines.
