High-power(HP) graphite electrode mainly petroleum coke, needle coke as raw material, coal tar as binder, after calcination, ingredients, kneading, pressing, roasting, graphitization, machining and made.
HP graphite electrodes with oxidation resistance, low resistivity, acid and alkali corrosion, high efficiency and energy saving, low loss and other characteristics.
China HP graphite electrodes arc discharge electric energy in the electric arc furnace steelmaking as a conductor to heat and melt the charge. High-power graphite electrode is mainly used for high-power electric arc furnace and ladle furnace to steelmaking.
Our graphite electrodes has the following feature:
1. Lower electric resistivity, good electric and heat conductivity;&
2. High mechanical strength under high temperature;
3. High resistance to thermal shock and mechanical vibration;
4. Lower ash content;
5. According to the customer’s feedback information, our electrodes used in EAF/LF with the pretty lower consumption per ton steel.
The rising of photovoltaic industry not only drives the demand of polycrystalline silicon, but brings great opportunity for the market of specialty graphite. It is predicted that the demand of specialty graphite will be greatly increased in the near future to match with the high speed development of photovoltaic industry.
The two main bottlenecks to limit the development of photovoltaic industry is polycrystalline silicon and specialty graphite. Nowadays, with the release of polysilicon, this bottleneck has been broken through. However, the gap of specialty graphite is still large. In the past 5 years, the capacity of specialty graphite applied to electric semi-conductive and solar energy increase to 50,000 tons from 25,000 tons. If every country develop solar energy according to this plan, then it could be reach 70,000 or 80,000 tons, or even 100,000 tons.
At present, graphite and other carbon relative products have been widely used in steel metallurgy, building, new energy, traffic, lithium battery, medical facility, sports goods, etc.
In recent years, graphite rods, graphite electrodes, graphite molds and other graphite products are used more and more widely, which benefits from the advantages of graphite. Now let’s look at the advantages of graphite products.
1. Graphite products have good adsorption.
The carbon pore structure makes the carbon have very good adsorption, so the carbon is often used as adsorption material to absorb moisture, odor, toxic substances and so on. We have done experiments, barbecue used graphite baking tray looks very clean, but put on the electromagnetic stove heating, will see the last time the adsorption of grease and harmful substances will slowly seep, but do not worry, with a clean meal paper wipe can be used.
2. Graphite products have good thermal conductivity, heat transfer fast, heat evenly, save fuel.
With graphite made of baking pan, pot and other heating fast, and the food fired evenly, from inside to cooked, heating time is short, not only taste pure, but also can lock food original nutrients. We have done experiments, with graphite baking plate barbecue, just start induction cooker to fire, only 20-30 seconds can preheat, start baking food as long as hit in small fires can be used to save energy.
3. Graphite products with chemical stability and erosion resistance.
Graphite has good chemical stability at room temperature and is not subject to any strong acid, alkali and organic solvents. Therefore, graphite products even if the long-term use of loss is very little, as long as the cleaning is as fresh as the new.
4. Graphite products have a strong antioxidant and reduction action.
Products, especially graphite mattress heating can produce negative oxygen ions, so that the surrounding goods active, maintain human health, effective prevention of aging, so that the skin full of luster and elasticity.
5. Graphite products environmental health, no radioactive pollution, high temperature resistance.
Carbon in the 2000-3,300 degree of high-temperature environment through at least more than 10 of the process of graphitization in the day and night to become graphite, so the toxic and harmful substances in graphite has been released, at least in 2000 degrees is stable.
When you see “May Day”
What’s the first thing you think of?
To be on holiday? Travel?
Compared with the Mid Autumn Festival, Spring Festival and other festivals
Like May Day is just a holiday?
At least we will think of the Mid Autumn Festival and Spring Festival
Reunion, festivity, firecrackers, fireworks and so on
But May Day is just a holiday
At first, May Day was used to organize gatherings and celebrate throughout the country to oppose capitalism and celebrate the socialism of “labor being the master of the country”. However, with the changes of the times, the political significance of labor day certainly no longer exists.
Why does May Day still exist?
In my opinion, the existence of a festival is not for us to participate in those customs, but for us to remember the story behind the festival and cultivate our good moral character. May Day tells us “fight against exploitation and fight for our own rights”, “labor is the most glorious” and so on.At last，RAY GROUP LIMITED CO., LTD. wishes you a happy May Day！
People in the industry know already that the characteristics of graphite mould manufacturing has changed to computer auxiliary design type from manual experience design type. Raygroup graphite mould has adopted computer assistive technology, artificial intelligence technology to make decision. Simulation analysis and optimizing design. At the same time, the application of database and computer network technology let designers share design data, information and resources on a large scale and cooperate, which also improve the technology of raygroup graphite mould to a unprecedented height.
Widely use CAD/CAE/CAM technology to integrate graphite mould design, computer analysis, production equipment, CNC machining, testing and mold testing. Designing data directly deliver to each production sectors through network database managing system, which greatly shorten the production cycle of graphite mould. Besides, the formation process computer simulation, concurrent engineering, artificial intelligence rapid prototyping manufacturing and other advanced manufacturing technology applications, as well as graphite mold standardization, specialized production, etc. also play an important role in shortening the supply period.
The manufacturing of our graphite mould mostly depend on higher degree of automation machine tool with high precision and high efficiency. From rough processing of graphite mould, thermal treament to quality control and testing of various precision processing, the machines must be fully equipped and appropriate facilitie. Among them, CNC machining equipment accounts for a major proportion to match with unit or short run mould production. At the same time, CNC machining equipment is the basic of CAD/CAE/CAM, which is beneficial for realizing full automatic processing of graphite mould manufacturing. This is why graphite mould has been widely used.
Graphite Parts processing factory What are the advantages of graphene material?
Graphene, the world’s thinnest and hardest material, came out in 2004 and was awarded the Nobel Prize in Physics in 2010 by Professor Andre-Heim of the University of Manchester, UK.
This graphene polymeric material battery has a long lifespan, which is four times times the traditional hydrogenated cell and twice times the lithium battery. And because of graphene’s properties, the battery weighs only half of the conventional battery, making it lighter to load and thus increasing fuel efficiency.
Although the battery has a variety of excellent performance, but its cost is not high. Graphenano company Responsible Person said, the cost of this battery will be 77% lower than lithium battery, completely within the consumer’s range. In addition, in the automotive fuel cell and other fields, graphene is also expected to bring revolutionary progress.
Isostatic pressing graphite product with high strength and high density has higher mechanics performance, machinery performance and good processing performance. It is widely used in metallurgy industry, semi-conductive industry, spark processing, biological material, nuclear industry, aerospace industry, national defense and military industry, etc. It has higher economic benefit and strategy significance. Therefore, every country is focuing on studying this aspect. At present, the study of isostatic pressing graphite product with high strength and high density from America, Japan, Germany, France, Russia and other countries rank leading position with good product performance and various kinds. Our country still has a great gap compared with these countries. Mainly shows below:
Weak basic research. There are many factors for isostatic pressing molding, such as material selection, granules composition, moulding pressure, roast temperature, heating rate of graphitization and heat treatment temperature, etc. There is no systematic and comprehensive studies on these factors.
Poor product performance. Our carbon industry has a great gap with America, Japan, Germany, France and other countries, especially in mechanical performance.
Specialty graphite mainly refers to high strength, high density, high purity graphite products. Use excellent oil coke as raw material, coal asphalt or synthetic resin as bond agent, it made through raw material preparation, mixing, pressing, crushing, re-mixing, moulding, roast repeatly, soak repeatly, purification and graphitization and machinery processing. It has excellent high temperature resistance, electric and thermal condutivity, lubrication, high temperature performance, anti-chemical corrosion, plasticity, etc. it is the important functional and consumable material, which is widely used in metallurgy, mould, checmial and other industry.
From material structure, specialty graphite could be divided into coarse granules structure, fine granules structure, super fine granules. From moulding method, it could be divided into mould pressing forming specialty graphite, extrusion forming specialty graphite and isostatic pressing specialty graphite. Besides, vibrating forming could be also used for producing specialty graphite.
Specialty graphite is widely used in metallurgical, chemical, oil, mechanical, nonferrous metals, aviation space environmental, nuclear engineering, industry of hi-tech material with higher requirement. Itself has high strength, high-density, high purity, high chemical stability, dense and uniform structure, high temperature resistance, irradiation resistance, high conductive rate, good wear resistance, self-lubrication, etc. It is the irreplaceable material in the production of high technology industry.
The continuous development of technology, continuous improvement of technology, graphite electrode products More and more irreplaceable importance, many steel mills, silicon plant continues to expand, graphite electrode dosage is also increasing. The graphite electrodes are in the limelight at this time, and at the same time, the quality of graphite electrodes is becoming stricter.
High-power graphite electrodes in the current use of electric arc furnace accounted for a large proportion, many of the original use of ordinary power graphite electrode enterprises have also switched to high-power graphite electrodes, because the high power graphite electrodes have less consumption, higher quality advantages, more and more manufacturers trust
With the country to eliminate backward production capacity further strengthening, many small steel mills, small silicon plants, calcium carbide, ferroalloy and other industries to reduce the number of graphite electrodes downstream of the industry sharp reduction, graphite electrodes a large number of inventories, manufacturers of capital turnover difficulties, resulting in many small manufacturers do not shut down, this can be said to be the graphite electrode of the new market reshuffle, many influential graphite electrode manufacturers can take advantage of this opportunity to expand the market. Increase the market share in the field of graphite electrodes.
Or this is a test of the quality of graphite electrode products, many quality manufacturers will be in this shuffle out of the limelight, the rapid expansion of business, but the quality of the manufacturers may not have the advantage of this closed or closed.
Graphite manufacturing is not like steel manufacturing, graphite manufacturing cycle is very long, from raw materials to finished products, at least 6 months (half a year) of time, like wine, every a links, every a times must be strictly controlled, but inevitably there will be quality differences, even if the same batch of products, due to the location in the furnace, processing temperature will vary, resulting in different performance. Usually, we will be tested to meet a standard section of the graphite products as a qualified product, of course, in the qualified products within the upper limit and lower limit of the product compared to the use of the performance of some of the differences, we will feel that any graphite company will have this kind of phenomenon, but the difference is not very big, also not often encounters this kind of extreme situation, if the customer has the request, we will try to provide the similar material in order to reduce the use error. The biggest difference between domestic graphite and foreign graphite is the extent of the difference.