What wire is used in EDM?
What wire is used in EDM?
brass wire
There are two main types of wire used for the main wire for EDM machine, brass wire and coated wire.
What is the smallest EDM wire?
Standard EDM wire is 0.25mm in diameter. Microwires can range from 0.15mm down to 0.020mm. The wire diam- eter chosen depends on part features, such as corner radii, slot widths, thin-wall details and intricacy of geometries. There are drawbacks to using a wire with too small a diameter.
What is the diameter of wire used in EDM?
EDM wire ranges in diameter from 0.0008 to 0.013 inch. A wire with a diameter of 0.0008 inch will produce a 0.00044-inch radius in a corner, a feature nearly impossible to manufacture any other way. Such precision may be required for openings in dies to produce electrical components, for example.
How thick can you wire EDM?
What is the minimum/maximum thickness of metal your wire EDM machines can work with? Our wire EDM machines can work with metal thicknesses anywhere from . 001 to 16 1/8”.
Can you reuse EDM wire?
No, the wire breaks down and is not reusable but we do send it to recycling.
Why is brass used in EDM?
Brass wire Zinc has a lower melting/vaporization point which makes it a better electrode material than copper, so the more zinc in the surface of an EDM wire, the faster it will cut.
Can you EDM Carbide?
Tungsten carbide, third in hardness to diamond and boron carbide, is an extremely difficult material to machine. Except for diamond cutting tools and diamond impregnated grinding wheels, EDM presents the only practical method to machine this hardened material.
Why brass wire is used in EDM?
Brass EDM Wire Zinc has a lower vaporisation point which makes it a better electrode material than copper. So, the more zinc in the surface of the EDM wire, the faster it will cut. Tensile strengths of brass wires range from 375-1200 N/mm² depending on the alloy composition and temper.
Why is wire EDM so accurate?
While accuracies of +/- 0.00004” (0.001mm) are sometimes quoted for wire EDM, +/- 0.0002” (0.005mm) is more widely accepted. The reality is that EDM accuracy depends on a combination of workpiece characteristics, the surface finish desired, and the time available for machining.
Can wire EDM cut graphite?
Can you wire-cut graphite? Yes, your EDM-wire cut machine can cut graphite, however, graphite being brittle needs careful handling and cutting is very slow; also, it will be better to do plain machining of graphite by milling and use your EDM-wire cut machine for machining the intricate profiles.
Can wire EDM cut plastic?
Virtually any material that is conductive is a perfect one for wire EDM, and it includes all the metals. DEK’s wire-cut EDM equipment also can machine plastic, metal alloys, exotic and precious metals.
How long does EDM wire last?
The machines of today are engineered to last into the 25-year and longer range. This progress in prolonging the life of the WEDM machine is part design and part education in maintenance. What a great investment for any shop.
What material Cannot be cut using EDM wire cut?
Due to the nature of wire EDM cutting — removing material by using rapidly repeating, controlled electrical charges along a strand of metal wire — the method is limited to electrically conductive materials. Therefore, any material that is a composite or coated with a dielectric is not feasible for EDM.
What is a sinker EDM?
Sinker EDM machines use an electrode and workpiece submerged in liquids such as oil or dielectric water. A power supply is connected to the electrode and generates electrical potential between both of the parts, producing a breakdown to form a plasma channel and spark jumps.
What is Micro EDM?
Microelectrical discharge machining (micro-EDM) is a thermal abrasion process which is based on electrical discharges between a tool and a workpiece. The advantages of micro-EDM are more and more in focus for ceramic machining.
Can you wire EDM stainless steel?
Wire EDM Applications We have expertise in working with hard and soft metals. Our wire EDM cutting can be applied to Aluminum, Brass, Bronze, Copper, Spring Steel, Stainless Steel, Steel and Titanium, which are super alloys and difficult metals to machine.
How accurate is wire EDM?
How accurate is a wire EDM?
Unfortunately, there’s no simple answer. While accuracies of +/- 0.00004” (0.001mm) are sometimes quoted for wire EDM, +/- 0.0002” (0.005mm) is more widely accepted. The reality is that EDM accuracy depends on a combination of workpiece characteristics, the surface finish desired, and the time available for machining.
What is the disadvantage of EDM?
Disadvantages of Electrical Discharge Machining The slow rate of material removal. The additional time and cost used for creating electrodes for Ram/Sink EDM. Reproducing sharp corners on the work piece is difficult due to electrode wear.
What is the difference between EDM and wire EDM?
The wire-cut EDM machine is operated by a CNC control instrument that can control the wire on a three-dimensional axis for greater flexibility. Conventional EDM cannot produce narrower angles or more complex patterns, while wire-cut EDM can be performed. A more precise cutting process allows for more complex cuts.
What is the difference between a wire EDM and a sinker EDM?
Wire EDM is capable of cutting very hard materials, and it is almost always used to cut all the way through the workpiece (with the length of the exposed wire being greater than the height of the workpiece). This is a major difference between wire EDM and sinker EDM, as sinker EDM is used to make cavities.