Discharge tungsten needle may refer to the tungsten electrode used in Electrical Discharge Machining (EDM). Electrical discharge machining is a method of metal processing by generating spark discharges between the workpiece and an electrode.
The following are some characteristics and applications of discharge tungsten needles in EDM:
1. Material selection: Tungsten has become a commonly used electrode material in EDM due to its high melting point and good electrical conductivity. Discharge tungsten needles are usually made of pure tungsten or tungsten alloy.
2. High temperature stability: Electrodes in EDM need to remain stable under high temperature conditions. Tungsten’s high melting point and chemical stability make it an ideal choice.
3. Electrical conductivity: Tungsten is a good conductive material, ensuring that current can flow between the electrode and the workpiece, producing spark discharge.
4. Hardness: Tungsten has high hardness, which is critical for precision cutting and engraving operations in EDM.
5. Application: EDM is widely used in the manufacturing industry for processing complex shapes that are difficult to cut, materials with high hardness, or parts that require high precision.
In electrical discharge machining, the electric charge between the workpiece and the electrode generates electric sparks, which partially melts the surface of the workpiece to achieve machining. Since the discharge process places very high demands on electrodes, selecting appropriate electrode materials, such as discharge tungsten needles, is crucial to ensuring processing quality and efficiency.
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