Graphite material is a carbon material composed of graphitic carbon, which is the most rapidly developed material in industrial materials
One of the materials, not only in the traditional industrial industry (metallurgy, chemical industry, machinery) the use of the increase, but also
The application has been extended to a wider range of high-tech fields, such as: aerospace, aviation, electronics, electrochemistry, communication
Nuclear industry, precision machinery, bioengineering and environmental protection [1zhen. The graphite material studied in this paper is electric fire
Cold isostatic pressing isotropic high-performance graphite electrode materials for flower processing (unless otherwise specified, please refer to
The graphite materials studied are all referred to as graphite for short), which are widely used abroad, and more than 95% of the electric sparks in the United States

  Processing users choose graphite as electrode material. In other industrial developed countries such as Japan and Switzerland, graphite
It also plays a major role in electrode materials for EDM.
In recent years, graphite as an electrode material has been used as a mold for products in China's automobile, home appliance, communication and electronics industries
The appliance is widely used in the field of EDM manufacturing. The density of graphite is about 1.55-1.859/em3
1 / 5 of the density of copper, and graphite can be bonded, so it can be used to manufacture large electrodes with complex shapes. Copper electricity
Compared with electrode materials, graphite has the advantages of high strength, low electrode consumption and small thermal deformation, which is especially suitable for manufacturing
Electrodes for machining complex cavity molds with special structures such as thin walls, fins and micro holes, as shown in Fig. 1-1
As shown in. Graphite electrode materials have gradually replaced copper electrodes as the mainstream electrode materials for EDM 124j.
(a) (b) (c) (d)
Figure 1.1 graphite electrode: (a) thin wall L; (b) Thin wall 2; (c) Micro group hole 1; (d) Micro group hole 2
Fig．1-l Graphite electrodes：(a)(b)Thin walls 1 and 2； (c)Micro·holesl and 2

  The traditional processing methods of graphite include turning, milling, grinding and sawing, but they can only achieve simple shape and low accuracy

Widely used, these traditional machining methods have been gradually replaced by high-speed machining technology. Graphite high speed machining center
The spindle speed is usually between 10000 and 60000r / min, the feed speed can reach 60m / rain, and the wall thickness can be processed
Doctoral Dissertation of Guangdong 1 = Ye University
Can be less than 0.2ram, the minimum fillet can be less than 0.2ram, and the surface processing quality and processing accuracy are high
It is now the main means of high-efficiency and high-precision processing of graphite [61. With the product structure of the mold industry moving towards large-scale, precision
Rapid development in the direction of complexity and efficiency, mold with deep grooves, narrow slits, micro group holes and other precise micro structures
The demand for graphite electrodes for manufacturing precision and complex molds has increased dramatically, which also affects the high-speed processing technology of graphite electrodes for manufacturing precision and complex molds
It puts forward a huge demand and higher requirements for updating.