Graphite characteristics:
Light weight: the proportion of 1/5 of the copper, suitable for large-scale production of electrodes
2 good machining performance: cutting resistance of copper 1/3
3. Surface easy to handle: machining burr-free, easy-to manual processing
4 high temperature: the temperature of 3650 ℃ sublimation gasification, able to withstand greater current
Low thermal expansion coefficients: 1/4 of the copper, and heat deformation
6 discharge machining speed: 3 to 5 times of the discharge machining speed ratio copper block, a large area is more noticeable when or roughing.
Electrode wear: copper ratio of 2:4, can be lossless processing.
 Graphite is a kind of elemental carbon allotropes, each carbon atom of the peripheral connected to three other carbon atoms (arranged plurality of hexagonal honeycomb-type) to a covalent bond, form covalent molecule. Since each of the carbon atoms are emitted from an electron, the electron can freely move, and therefore the graphite is a conductive body. Graphite is one of the most soft mineral. It uses including the manufacture of a pencil core, and a lubricant.
 Nature characteristics
The room temperature single quality carbon of the chemical nature of stable, insoluble in water, dilute acid, dilute alkali and organic solvents; different temperatures react with oxygen combustion, to generate carbon dioxide or carbon monoxide; halogen only fluorine can be elemental carbon direct reaction; in the heating Next, a single carbon easier by acid oxidation; at high temperatures, the carbon can generate metal carbide reaction with many metals. The carbon has a reduction, at high temperatures metal smelting.
 Graphite is a carbonaceous element crystalline minerals, its crystalline grid is hexagonal layered structure. The distance between each network layer 3.40Å 1.42Å spacing of the carbon atoms in the same network layer. Are hexagonal, with complete layered cleavage. The cleavage plane molecular bonds mainly weak molecular attraction, so the natural floatability good.
Graphite LUBRICANTS
Graphite is a relatively soft material, the lubricity is also good physical properties, we use it to do with the solid lubricants, the the modern mold guide sleeve, wear blocks, is also used for this application. The smooth graphite powder, no oil since the the smooth graphite rod, solid lubricants graphite rod is graphite lubricants to do this.
 Second, the conductive
The conductivity of the graphite is the nonmetallic best conductive minerals, its conductive resistance can almost be ignored, practicing mills graphite electrodes also using a graphite superconductivity used heating power, generate heat, melting the intermediate can not be heating part, we used cell, the inside of the graphite rod, also using the conductivity of the graphite, for human use. .
 Third, the temperature of the graphite
Under normal circumstances, the temperature of the graphite temperature reached more than 3000 degrees, and this characteristic can be produced using graphite other materials can not be done in a high temperature environment, we want to achieve the demand with graphite, polysilicon thermal field graphite furnace temperature can reach thousands of degrees, so, and is an excellent material for conductive graphite, we produce a graphite rod purification rods, to ensure the purity of the polycrystalline silicon, this is what we call a high-purity graphite powder