What is the Difference Between Copper Electrodes and Graphite Electrodes?

Jun. 23, 2020

As a Graphite Electrodes Solutions Supplier, share with you the difference between copper electrodes and graphite electrodes.

Graphite Electrodes

Graphite Electrodes

Data characteristics: Copper: electrolytic copper is best forged without impurities; Graphite: fine-grained structure, isotropic high-purity graphite. Finishing: Copper: 1, low loss electrode; 2. The appearance of the processing enterprise can reach Ra0.1m Suitable for mirror surface processing; 3. If there are grains in the appearance, the grains eroded by copper are more uniform. The graphite electrode is mainly made of petroleum coke and needle coke as raw materials, and coal pitch is used as a binder. It is made by calcination, batching, kneading, pressing, roasting, graphitization, and machining. It releases electrical energy in the form of an electric arc in an electric arc furnace. The conductor that heats and melts the charge can be divided into ordinary power, high power and ultra-high power according to its quality index.

Graphite Electrodes mainly includes four types of common power graphite electrodes, oxidation-resistant coated graphite electrodes, high-power graphite electrodes and ultra-high-power graphite electrodes. Graphite rods are commonly used in electric heaters of high-temperature vacuum furnaces. The maximum operating temperature can reach 3000°C. It is easy to oxidize at high temperatures. Except for vacuum, it can only be used in a neutral atmosphere or a reducing atmosphere. It has a small thermal expansion coefficient, a large thermal conductivity, a resistivity of (8~13)×10-6 Ω·m, better workability than SiC and MoSi2 rods, high temperature resistance, excellent cold and extreme heat resistance, and price Cheaper. Graphite block is a kind of artificial graphite, and artificial graphite is made by manual heating of coke products. Generally, if the purification is made for high purity or carbon fiber, the added value is higher.

Graphite: high finishing electrode loss

Roughing: Red copper:

Graphite: rough opening speed, good air permeability; low electrode consumption, processing is suitable for increasing the cavity.

Data usage rate: Red copper: 1. It can be used again after restructuring. The utilization rate is high. Graphite: Mechanical processing function: Copper: 1, machine function is poor, grinding and finishing is difficult, how to improve: welding on copper Steel substrate; 2. It is easy to deform and the grinding technology is difficult, so it is not suitable for direct production and processing of fine parts; 3. Easy to form graphite: 1, good mechanical function, easy to form and correct. The thin, deep bone electrode will not deform, it is brittle, it will break instead of deforming; it can withstand high temperature without deformation; N1 liter 4, high-speed machine ability and processing, brittle and hard, the tool is easy to wear, need to use a special graphite knife are easy to crack, large dust, easy to fall, easy to deposit carbon, medicine residue, should pay attention to protect the machine tool.

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