The test items include: determination of particle size distribution of graphite electrode plate; Determination of solid composition; Determination of volatiles; Determination of pH value; Determination of grain size; Determination of film resistivity; Determination of adhesion; Determination of porosity; Determination of moisture resistance; Determination of iron and copper content, in addition can also determine the product's heat resistance and film lubrication, etc.The particle size distribution of the graphite electrode plate is determined as follows:

First of all, the quality of the graphite blocks on the quality of its service life of the basic reasons.It must be carefully processed to meet the standard targets. Secondly, to ensure a good working environment of graphite anode plate is the key to prolong its life. In the process of production, it can reduce extrusion, keep the working environment clean, detect the circuit regularly, organize production at the optimal temperature, reduce the degree of oxidation of air to it, and so on. Finally, high quality graphite blocks are used to extend their life. Conductivity, volume density, compressive flexural strength, resistivity and other physical and chemical properties were improved.

Graphite products can be beneficial to health, graphite products can be heated to produce far infrared ray, far infrared ray can enhance the body function, make the human body full of vitality and vitality, and effectively prevent various diseases. Such as the activation of water molecules, increase the oxygen content of the body, make the mind flexible, invigorate the spirit, enhance metabolism, regulate the nervous fluid body, improve blood circulation, especially the microcirculation system. It can effectively prevent hypertension, cardiovascular disease, tumor, arthritis, cold paralysis of limbs and other diseases caused by microcirculatory system disorders.

Basic characteristics of graphite: 1, high temperature resistance: graphite melting point is very high, in a vacuum of 3850±50 degrees Celsius. And then sublimation at low pressure, at 2200 degrees Celsius. Different from the general high temperature resistant materials, when the temperature rises, graphite not only does not soften, but the strength increases, and then 2500 degrees Celsius graphite tensile strength than at room temperature to increase twice. 2. Thermal and electrical conductivity: Since the carbon atoms on the hexagonal network plane layer have residual electrons, the remaining electrons with the carbon atoms on the adjacent plane exist between the network plane as an electron cloud, so that graphite has good thermal and electrical conductivity. The thermal conductivity of graphite is just opposite to that of general metal materials.

The graphite electrode material characteristics are as follows: 1.CNC machining speed is fast, cutting property is high, dressing is easy, graphite machining speed is fast, 3-5 times of copper electrode, precision machining speed is especially outstanding, and its strength is very high, for ultra-high (50-90mm), ultra-thin (0.2-0.5mm) electrode, processing deformation is not easy. And in many cases, the product needs to have good surface effect, this request as far as possible when doing the electrode to make the overall public electrode, and the whole public electrode production when there is a variety of contact Angle, due to the nature of graphite is easy to repair, make this problem be solved easily, and greatly reduce the number of electrodes, and the copper electrode is impossible.