china uhp graphite electrode

Pubdate: 07-06 2021

What are the characteristics of the graphitization process of high-purity china uhp graphite electrode?

(1) Ventilation purification. When the furnace temperature reaches 1800°C &;50°C, nitrogen gas is introduced first, and chlorine is introduced when it is maintained at about 1900°C. When the furnace temperature reaches about 2350°C, freon and chlorine are introduced, until 2700°C &;50°C. Stop the graphitization of the high-purity china uhp graphite electrode when the temperature is high, and stop the flow of freon at the same time, but continue to flow the chlorine until the furnace temperature drops below 2000 ℃, and then send nitrogen to wash out the chlorine in the china uhp graphite electrode products, and at the same time The purified gas remaining in the furnace is driven out, and the oxidation of china uhp graphite electrode products and the reverse osmosis of impurity gas are prevented. When manufacturing nuclear graphite, it is necessary to ventilate nitrogen after argon until it is out of the furnace to prevent the china uhp graphite electrode from adsorbing nitrogen. In the furnace cooling process, natural cooling is required instead of water cooling, and one of the purposes of passing nitrogen is to accelerate cooling.

(2) The graphitization temperature is high. The higher the graphitization temperature, the more impurities are discharged, and the higher the purity of china uhp graphite electrode products. The high-purity china uhp graphite electrode graphitization (also known as vented graphitization) temperature is above 2700℃.

(3) Low ash resistance material and insulation material. High-purity china uhp graphite electrode graphitization requires pure insulation material and resistance material, otherwise the purification effect will be reduced. Generally, petroleum coke with low ash content is used as insulation material, resistance material and furnace bottom material.

​ (4) Low raw material impurities. When producing high-purity china uhp graphite electrode products, the impurity content should be strictly controlled from the beginning of the raw materials, and low-ash raw materials should be selected. At the same time, the raw materials should be properly kept to minimize the mixing of impurities as much as possible. Generally, the impurity content of graphitized products is about 0.3%, while the high-purity china uhp graphite electrode requires an impurity content below 0.05% and some requires below 0.01% depending on the application. ?

 

[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.

[Purchase of electrode paste, please be cautious when encountering these problems] The threshold for the production of electrode paste in the leather bag company is relatively high. First of all, environmental issues. Without an environmental assessment report, it is impossible to produce an electrode paste factory; secondly, it is a cost issue. , Even if a non-CNC production line, the cost of an electrode paste processing line is still tens of millions. Not to mention other raw materials and technical costs. So not everyone can afford the electrode paste business casually. Therefore, there are many trading companies on the market that sell electrode paste under the name of the factory, but they have no production capability, let alone after-sales service. The price is also often very low, and when it is sold, it is shoddy. Therefore, when purchasing electrode paste, you must check the strength of the factory and beware of being deceived. Our company has encountered many such customers.

[Physical and chemical indicators of electrode paste] Resistance: <65 Ash content: <5% volatilization: 10.0-15.0 Density: >1.3 Pressure resistance coefficient:> Ductility: 6-20 Shape: egg pill, trapezoid, cylinder. Packing: Ton bag or export packing. According to customer requirements. Note: The parameter is the limit value reached by our factory. Please call us for details.

[Electrode paste, the highest quality raw materials create the highest quality products] The success of CGM carbon electrode paste is that advanced equipment and excellent technology are indispensable factors. Of course, there are other factors that add to the improvement of CGM quality. . As we all know, electric forging coal is the aggregate of electrode paste, and the quality of electric forging coal directly affects the use effect of electrode paste. CGM carbon electrode paste uses authentic Ningxia Taixi coal, which has low volatility, low ash content, high carbon content, low resistance and high hardness. It is a natural raw material for electrode paste. The carbon content of Taixi coal is 20% higher than that of Shanxi anthracite, and the price is 30% higher. Ningxia Taixi Coal has been known as black gold since ancient times.

[Electrode paste, CGM carbon can meet huge orders] This true story happened in a large alloy group factory in Shandong. One day, a dealer came to us and said that 12,000 tons of electrode paste are needed every year. We didn’t believe it at first, but after detailed communication, we learned that he is the owner of a small electrode paste factory in Shandong because he signed a contract with a group company in Shandong for two per year. For a 10,000-ton order, his own factory has a maximum annual output of only 8,000 tons, and the remaining 12,000 tons must be cooperated with the factory. With an annual output of 200,000 tons of electrode paste, CGM Carbon still has a margin of 12,000 tons. Therefore, not all orders can be eaten by the factories on the market, but CGM carbon is different. CGM carbon electrode paste can meet the needs of the group company’s electrode paste.

[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.


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