600mm graphite electrodes uhp
600mm graphite electrode
The main production process of 600mm graphite electrode is as follows:
Calcining. Both petroleum coke and pitch coke need to be calcined, and the calcining temperature should be reached to fully remove the volatiles contained in the carbonaceous raw materials and improve the true density, mechanical strength and conductivity of the coke.
Crushing, screening and ingredients. The roasted carbonaceous raw materials are crushed and sieved into aggregate particles of the specified size, and part of the coke is ground into fine powder, which is weighed according to the formula and aggregated to form a dry mixture of various particles.
Kneading. Under the heating state, the quantitative dry mixture of various particles and the quantitative binder are stirred and mixed, and kneaded into a plastic paste.
Forming. Under external pressure (extrusion molding) or high-frequency vibration (vibration molding), the paste is pressed into a green electrode (green body) with a certain shape and higher density.
Roasting. The green electrode is placed in a special baking furnace, the green electrode is filled and covered with metallurgical coke powder, and the bonding agent is carbonized at a high temperature of about 1250°C to form a coking coke, thereby preparing a calcined carbon electrode.
Impregnation. In order to improve the density and mechanical strength of the electrode product, the roasted electrode is installed in the high-voltage equipment, the liquid impregnant pitch is pressed into the pores of the electrode, and the second roasting should be carried out after the impregnation. According to the product performance requirements, sometimes the impregnation and the second roasting It needs to be repeated 2 to 3 times.
Graphitization. The roasted carbon electrode is placed in a graphitization furnace, covered with insulating material, and heated by direct energization to generate high temperature. The carbon electrode is converted into a 600mm graphite electrode with a graphite crystalline structure at a high temperature of 2200~3000℃.
Mechanical processing. According to the application requirements, the 600mm graphite electrode blank is subjected to surface turning, flat end faces and screw holes for connection, and the joints for connection are processed.
The 600mm graphite electrode is properly packaged after passing the inspection and sent to the user.
[Electrode paste, many people choose CGM carbon] CGM was established in 1992 and has developed into a large-scale carbon production enterprise with an annual output of 200,000 tons of electrode paste and 250,000 tons of forged coke. In the development process of CGM Carbon, we have experienced many difficulties and detours. However, with the basic concept of honest management, CGM Carbon has grown stronger. CGM carbon products are not only sold domestically, but also exported to Indonesia, foreign countries and other countries, and are recognized and praised by the international market.
[Electrode paste, why we do it better] There are 500 electrode paste manufacturers nationwide, and there are more than 100 manufacturers with a scale of more than 10,000 tons. In so many electrode paste production plants, why is CGM carbon in the production scale? Do better in terms of word of mouth. This starts with the development history of CGM Carbon. CGM Carbon was established in 1992 and was initially a carbon enterprise with petroleum coke calcination as its main business. In 2006, the CGM carbon electrode paste production line was put into operation. The production of electrode paste requires heat to soften and shape the raw materials. The general electrode paste factory needs a gas generator in this process, and in time, it also needs more expensive natural gas after coal is changed to gas. However, because our calcined coke production line can release a lot of spare heat, and this heat is just used by the electrode paste production line. Therefore, compared to more general electrode paste manufacturers, we have already saved a lot of costs in terms of heat generation.
[Electrode paste, CGM carbon makes the world without submerged arc furnace accidents] According to statistics, in all submerged arc furnace accidents, 20% are electrode paste problems, and 30% are caused by workers. The quality of our electrode paste can allow customers to avoid these 20% of the problems, and the after-sales service of our factory engineers can provide free training to the workers, allowing the factory to avoid the remaining 30% of the problems.