Discharge tungsten needle, also known as discharge machining needle, is a special tungsten product made of high-purity metal tungsten powder through precision processing technology. This product is known for its slender tapered design, which enables it to easily enter narrow processing spaces and ensure high-precision processing results. The reason why the discharge tungsten needle is unique among many materials is mainly due to its excellent high strength characteristics. As a transition metal, tungsten has significant advantages such as high density, high melting point, high hardness and high strength. These characteristics enable the discharge tungsten needle to maintain stable performance and avoid deformation or damage under high temperature, high pressure and complex processing environment. .
The high strength advantage of the discharge tungsten needle is reflected in many aspects:
First, tungsten has a melting point of 3410°C, one of the highest of all metals. This feature ensures that even when high-temperature sparks are generated during EDM, the discharge tungsten needle can still maintain its structural stability and will not affect the machining accuracy due to thermal deformation. The high melting point makes the discharge tungsten needle perform well under extreme processing conditions, ensuring the smooth progress of the processing.
Secondly, the hardness of tungsten is second only to diamond, which gives the discharge tungsten needle extremely strong wear resistance. During long-term high-intensity processing, the discharge tungsten needle can effectively resist wear and maintain the sharpness of the needle tip, thereby extending its service life. This wear-resistant property is of great significance for improving production efficiency and reducing replacement frequency.
Furthermore, the high strength of tungsten ensures that the discharge tungsten needle can maintain the stability of shape and size when subjected to complex stress. This feature is crucial to ensure processing accuracy, especially in industrial applications with high precision requirements. The stability of the discharge tungsten needle can significantly improve product quality.
Finally, tungsten also has good conductivity, which enables the discharge tungsten needle to efficiently transfer current during EDM and generate stable spark discharge, thereby improving machining efficiency. Good conductivity not only increases processing speed, but also improves processing quality, making the final product more refined.