lame electrode graphite
lame electrode graphite
Excellent performance of graphite electrode, graphite, graphite anode plate high temperature anti-oxidation coating
Graphite electrode, graphite, and graphite anode plates are all three types of equipment or materials that must be used in industry. The quality of their use is directly related to the safety and efficiency of industrial production. If the material has oxidation and corrosion problems, industrial production will not operate normally, and the safety hazard index will greatly increase. Solving the problem of oxidation and corrosion of high-temperature materials also reflects the level of science and technology of a country. The high-temperature enclosed anti-oxidation coatings of Beijing Zhisheng Weihua Company have high technical content and strong scientific research technology.
The temperature of the graphite electrode can reach 1400℃ during normal operation. Under such high temperature, the graphite electrode lining will be heated by high-temperature flame grilling, and the lining thermal insulation bricks, thermal insulation cotton and other thermal insulation materials will be extremely oxidized and aged at high temperature, and the materials will become brittle. , The thermal insulation effect decreases, and the graphite electrode safety index drops sharply. In this way, the graphite electrode lining 3-5 years, the graphite electrode lining will have to be replaced by a batch, which will cause waste of materials and reduce the normal working time of the graphite electrode. For the enterprise, it is a loss for the wife and soldiers!
Graphite anode plates oxidize and corrode faster in high-temperature environments. High-temperature oxidation of graphite anode plates means that graphite anode plates undergo chemical reactions with oxygen or oxygen-containing substances such as water vapor and 2 in a high-temperature gas phase environment to transform into graphite anode plate oxides. , The oxide of the graphite anode plate has been separated from the graphite anode plate and cannot form a whole. High-temperature corrosion problems are common in petrochemical, energy, power, metallurgy, aerospace and other fields. High temperature corrosion and oxidation of graphite anode plate will cause embrittlement layer of graphite anode plate, and the index of graphite anode plate such as hardness, strength and toughness will drop greatly, and it is easy to cause major safety accidents such as explosion.
Graphite at high temperature includes graphite electrode, graphite mold and graphite crucible. In these three materials, graphite is prone to oxidation and combustion reaction at high temperature, which will increase the porosity and loose structure of the colloidal carbon layer on the surface of the material, which affects its use. life. Taking the conventional baking of ladle as an example, after baking, the carbon-containing (graphite) refractory generally produces a decarburized loose layer of more than 15mm on the surface, and the decarburized layer is quickly eroded after the steel is contained. The graphite electrode loss of a steel plant accounts for more than one-tenth of the production cost of the steel plant. It was seen in the Zhisheng Weihua High Temperature Oxidation Laboratory that a 3 kg graphite crucible at a high temperature of 1600°C for 3 hours reduced its weight by 30 % Or more, that is, a 3 kg graphite crucible will become 2 kg at a time, and the oxidation is really fast. Graphite is a relatively expensive material. Corrosion and oxidation cause increased production costs and waste of energy materials.
To sum up the above, the hazards caused by high-temperature oxidation of graphite and graphite anode plates at high temperatures, and the significant safety significance and energy-saving benefits of preventing oxidation. To solve the high temperature oxidation of graphite electrode, graphite, and graphite anode plate at high temperature, it is necessary to find a material that has high temperature resistance, good compactness, strong oxidation resistance, and first-class adhesion. Remember that under the understanding of many parties, we have obtained a material that can fully meet the above-mentioned indicators—ZS-1021 high temperature resistant sealing coating. This type of coating has high temperature resistance. It uses Zhisheng Weihua’s special high-temperature solution, and the temperature can reach 1800℃. Long-term fire-resistant grilling. The material adopts nano-scale fish-scale structure with good compactness. The hardness can reach 7-8H, which is higher than that of graphite anode plate. The coating can form a dense coating on the graphite electrode, graphite, and graphite anode plate. It has strong anti-rust, anti-corrosion, anti-oxidation, anti-tarnishing, and wear-resistant properties. ZS-1021 high temperature resistant sealing paint is applied to graphite electrode, graphite, graphite anode plate, etc., to prevent oxidation rate at high temperature can reach more than 80%, material energy saving utilization rate can reach more than 90%, industrial high temperature production material safety accident rate can be A drop of more than 95, objective data.