Carbon felt is made up of carbon fiber and felt like,it divided into two categories,classificated by raw materials. RAYON and PAN.

　　Carbon felt has the properities as the bulk graphite,such as: high temperature resistance,corrosion resistance,non melting etc.meanwhile,it’s also low density,flexible, elastic, collapsible, clipping, suture as the fiber.

　　Carbon felt is widely used as the high temperature heat insulation material for high temperature furnace(eg.high temperature carbon tube furnace), high temperature induction furnace and vacuum coating furnace.as it has a low invasion with molten metal,ceramic and glass etc.so it could be used as a surface coverings of these material,to reduce the heat loss.The fiber in the carbon felt whose diameter is less than 10μm,so it’s also good using as catalyst carrier.

　　The carbon carbon composite material products used with carbon felt could be used as nose cone, throat material in the aerospace industry.The main specification of carbon felt are:bulk density,carbon contant,ash,strength, thermal conductivity, oxidative weightlessness, tensile strength etc.

　　Graphite felt need the carbon felt under vacuum conditions and with 2000 degrees Celsius heat treatment.the carbon contant is higher than carbon felt,more than 99%.the technology is that fill the RAYON carbon felt or PAN carbon felt in to a graphite material container and put the container into high temperature furnace,meanwhile, ensure that the vacuum in the furnace or inert gas is filled, heating-up the temperature to 2200~2500 degrees celsius,and then chill-down 100 degrees celsius,the graphite felt is done.

　　The main use of graphite felt is heat insulating material of Single crystal silicon smelting furnace,It also could be used as filter material.the working temperature could get 3000 degrees celsius under non oxidizing atmosphere.

　　Graphite is used in a number of forms in refractories due to its ability to withstand intense temperatures. Alumina-graphite is used to construct nozzles and troughs. Graphite based bricks are used to line steel convertors, blast furnaces and electric arc furnaces.

　　Graphite is used to construct the anodes of all major batteries such as batteries used around the house in remote controls and battery powered toys. Graphite is particularly important in the construction of electric car batteries.

　　Natural graphite and synthetic graphite are both used as a carbon raiser in molten steel. This increases the carbon content in the steel.Graphite is used in the brake linings of large heavy vehicles.Fine flake graphite is used in a certain type of water-based paint that is used to prevent hot metal from sticking to molds.

　　Graphite is also used to produce lubricants to use at very high or very low temperatures. Forging die lubricants, anti-seize agents, gear lubricants are all made from graphite.Graphite is used as the marking substance inside pencils. It is normally mixed with clay to give it softer characteristics. It is also used in raw form as an artistic medium in sticks and flakes.It is also used in some electric motor brushes.

　　Expanded graphite is used to make graphite foil which is used to make bipolar plates in fuel cells and heat sinks for laptop computers.Expanded graphite is often used as a surface material for molten metal ladles and steel ingots to reduce heat loss.It is also used as fire stops around the edge of fire doors and as protective sheets around pipes to prevent fire damage.Specialized synthetic graphite is also used as a matrix and neutron moderator in nuclear reactors.

　　Synthetic graphite is used to create the electrodes that melt scrap iron and steel in electric arc furnaces due to graphite’s ability to conduct electricity.Graphite fiber is also used to reinforce plastics such as those used in fishing rods, golf clubs, bicycle frames and pool cues and heat-resistant components such as reinforced carbon-carbon.Graphite has also been used to create radar absorbent materials and smokeless powder.

　　Graphite is one of six allotropes of carbon elements,it’s layered crystal structure.As the special crystal structure,graphite shows the unique physical and chemical properties,such like:silver gray,lubricity,electrical conductivity,corrosion resistance,oxidative stability etc.Graphite divided into two categories,natural graphite and synthetic/artificial graphite.

　　The natural graphite come from the graphite mineral,and there are two types of it, Amorphous graphite and crystal graphite(flake graphite).too much impurities in the graphite ore after mining,so it need to be beneficiation before using.the mainly use of natural graphite is produce refractory material,carbon brush,flexible graphite,lubricant,etc.it also be used for carburetant.

　　Among the carbon industry,the largest production of the graphite products is variety of synthetic/artificial graphite.it’s usually manufactured by petroleum coke or pitch coke,and finished after charge mixture, kneading,molding,baking, graphitization and machining,the production cycle need dozens of days.

　　Graphite have a lot of types.There are so many kinds of the artificial graphite: Single crystal graphite, multi crystal graphite, pyrolytic graphite and Highly oriented pyrolytic graphite,carbon fiber and so on.Most of the graphite products belong to the multi crystal graphite.

　　Graphite electrode is the mainly product of all the graphite products. It’s a high temperature resistance,corrosion resistance and electrical conductivity material.the artificial graphite is also widely used in other industry,such like the carbon brush used in the electrical machine,casting mould,EDM dies , wear parts and electrolytic cell in the chemical industry.High purity and high strength graphite material is also used in the nuclear industry and as the parts of rocket.

　　If you need graphite or carbon products , We interested in supplying those materials for you.As a leading Chinese graphite manufacturer and supplier, we specialize in providing high quality graphite material, carbon carbon composites and graphite parts.To buy graphite and carbon products please contact us and ask our sales manager for a quote.

　　Graphite electrode is usually used as extruded graphite materials, because of low resistivity of extruded graphite, conductive performance is good, the price is competitive.

　　Mold geometry increasing complexity and diversification of product applications has led to the discharge of sparks getting high accuracy requirements. Graphite electrodes are the advantages of easier machining, electrical discharge machining removal rate is high, small graphite loss, therefore, part of the group of sparks machine customers gave up and switched to the copper electrode graphite electrodes. In addition, some special shape of the electrodes can not be made of copper, but are more easily molded graphite and copper electrodes heavy, not suitable for processing large electrode, these factors have caused some group of sparks machine client application graphite electrodes.

Graphite electrode with good property

The chemical stability:

Graphite at room temperature have a good chemical stability to acid, alkali and corrosion resistance to organic solvents.

Thermal shock resistance:

Graphite used at room temperature can withstand dramatic changes in temperature without damage to live, when sudden changes in temperature, little change in the volume of graphite, will not crack.

Welcome enquiries to our company, we will give you the best quality products and the most competitive price.

　　A lot of people know the important role of Braking system, also a lot of people are willing to spend more money to change this relationship to the life safety of the system.

　　This material is called Carbon ceramic composite materials (Carbon Ceramics: C-SIC), which is a new type of composite material, it is not young, because the material as early as the 1991 Frankfurt international motor trade fair has been published. Only this material due to its production up to more complex, and the production cost is too high, so know in 2001, was formally applied to 911 (996) achieved. And with the continuous development of science and technology, in recent years, the carbon ceramic technology mature gradually, and after verification confirmed that it is indeed a very strong material, to be used in each big factory, and gradually developed to the modified products, only the price, is still so high.

　　We first started its production process, in fact both carbon carbon and carbon ceramic, its basic parts are only one, that is carbon fiber. If you want to ask it with what we see at ordinary times package of carbon fiber is used to make and bellows materials used in? Answer you, theoretically making carbon brake disc package of the carbon fiber to make carbon fiber (dry carbon fiber) is actually the same, and the method of making the aerodynamic kit of high temperature and high pressure is actually one of the steps of making carbon brake rotor. Yes, both production package dry carbon fiber and carbon fiber brake disc have to go through high temperature and high pressure, this is a basic form, with the basis to continue to make, as for the carbon carbon and carbon ceramic production respectively is what? Lies in the different carbon ceramic brake disc is not is not really to join the ceramic, but on the basis of the carbon fiber add silicon (Si) this kind of element, the element in the case of high temperature and high pressure will react with carbon production of silicon carbide, and called it a carbon ceramic, its meaning is actually a ceramic contains elements of silicon carbide, so called carbon ceramic. The so-called carbon carbon, in fact, in the aspect of production and the difference between carbon ceramic is not added in the silicon. Is the direct use of layers of carbon fiber cloth for high temperature and high pressure compression, make it will be just the right thickness of compressed into layers of CFRP. Of course, you will also ask, carbon fiber sheet (CFS) is a flat cloth, if use resin glue, it will shatter easily, how to inherit the friction? Here is just a general designation of carbon fiber cloth, according to head back, actually making carbon carbon and carbon ceramic brake disc of the carbon fiber used although package to make the similar, but not the same. Brake disc, after all, there is a certain thickness and need of friction, so the time of its carbon fiber in the preparation of absolute is not flat, the horses as the production of brake disc, the use of carbon fiber is compiled by 3 D, and only in this way can we really be able to brake disc friction under high intensity.

　　A lot of people know the important role of Braking system, also a lot of people are willing to spend more money to change this relationship to the life safety of the system. Speaking of the system, like the porsche 911, pagani Zonda R and lamborghini LP700 etc, these vehicles on the braking system is used on the changing material of brake disc, believe that if you have pay attention to these supercar fans will know that this material is called Carbon ceramic composite materials (Carbon Ceramics: C-SIC), which is a new type of composite material, it is not young, because the material as early as the 1991 Frankfurt international motor trade fair has been published. Only this material due to its production up to more complex, and the production cost is too high, so know in 2001, was formally applied to 911 (996) achieved. And with the continuous development of science and technology, in recent years, the carbon ceramic technology mature gradually, and after verification confirmed that it is indeed a very strong material, to be used in each big factory, and gradually developed to the modified products, only the price, is still so high.

　　We first started its production process, in fact both carbon carbon and carbon ceramic, its basic parts are only one, that is carbon fiber. If you want to ask it with what we see at ordinary times package of carbon fiber is used to make and bellows materials used in? Answer you, theoretically making carbon brake disc package of the carbon fiber to make carbon fiber (dry carbon fiber) is actually the same, and the method of making the aerodynamic kit of high temperature and high pressure is actually one of the steps of making carbon brake rotor. Yes, both production package dry carbon fiber and carbon fiber brake disc have to go through high temperature and high pressure, this is a basic form, with the basis to continue to make, as for the carbon carbon and carbon ceramic production respectively is what? Lies in the different carbon ceramic brake disc is not is not really to join the ceramic, but on the basis of the carbon fiber add silicon (Si) this kind of element, the element in the case of high temperature and high pressure will react with carbon production of silicon carbide, and called it a carbon ceramic, its meaning is actually a ceramic contains elements of silicon carbide, so called carbon ceramic. The so-called carbon carbon, in fact, in the aspect of production and the difference between carbon ceramic is not added in the silicon. Is the direct use of layers of carbon fiber cloth for high temperature and high pressure compression, make it will be just the right thickness of compressed into layers of CFRP. Of course, you will also ask, carbon fiber sheet (CFS) is a flat cloth, if use resin glue, it will shatter easily, how to inherit the friction? Here is just a general designation of carbon fiber cloth, according to head back, actually making carbon carbon and carbon ceramic brake disc of the carbon fiber used although package to make the similar, but not the same. Brake disc, after all, there is a certain thickness and need of friction, so the time of its carbon fiber in the preparation of absolute is not flat, the horses as the production of brake disc, the use of carbon fiber is compiled by 3 d, and only in this way can we really be able to brake disc friction under high intensity.

　　Speaking of the carbon fiber problem, and one more thing is to be sure, in a foreign country is Brembo manufacturers have the ability to make carbon fiber such as brake disc, these vendors are not the same way they have prepared. Particularly in terms of production materials, like help ferrari contract Brembo, its use of carbon ceramic brake disc of the choice of materials is to choose a way of short called woven. Its characteristic is to use this form to make carbon fiber is relatively convenient, thought short woven carbon fibre is generally small, so better control their weight, cost savings. This form made of carbon fiber its coefficient of friction and heat resistance, etc, the basic and the use of long to make woven carbon ceramic brake disc is the same, but its only shortcoming is the tension of the brake disc itself, if on a pedestal a miss will break them easily, so use this kind of brake disc models after the accident, the manufacturer usually requires the owner to brake disc to send back to factory for repair work. Because after an accident, you may not have the brake disc surface crack, but its internal may already appear internal injuries.

　　Say that finish, let's take a look at its actual effect. Both carbon, ceramic and carbon carbon brake disk, it than the original cast iron brake disc is worse. We know generally made of cast iron in the form of the brake disc is quite large, the weight and metal though to withstand high temperatures, the temperature is not high. And in the case of high temperature, metal can appear the phenomenon of softening, in addition, the performance of thermal conductivity of metal is too high, so the heat will transfer to the brake disc and tubing, make the brake fluid produces heat and boil, finally it is fatal. The advantages of carbon fiber, first of all you should think of light, in fact, the size of the brake disc, using carbon fiber materials, are lighter than the cast iron material on half the weight. And this is not the key, the key lies in the carbon fiber material of insulation and resistance ability is very strong. That is to say, when braking, brake and brake disc friction, although its temperature will rise, but relatively slow, and its heat transfer is small, so if the intense driving, brake oil oil temperature will be guaranteed. Of course, this is the brake and the brake disc are carbon fiber material.

　　Replacement brake and replace the brake disc, I believe that everybody's most concerned about is the working temperature and the coefficient of friction, working temperature in normal street, of course, it is best to start from zero, this carbon carbon and carbon ceramic are actually able to do it, and was selected by F1 carbon ceramic brake disc, we think the main reason is that the coefficient of friction, the friction coefficient of carbon ceramic belongs to a relatively average, meaning that it will have a general range of coefficient of friction, whether how much braking, its friction coefficient will wander in this range, so it is no problem for the street, but the corresponding to the aerodynamic super F1, I'm afraid it is not enough, because no matter what the car, the driver will continue to squeeze the brake distance, often is the zero point zero seconds late brake, can get a chance to overtake. Because if the coefficient of friction to keep for a long time in a certain level, the driver with the limit, it is hard to break. Then the characteristics of carbon carbon is most can play a role, because carbon carbon brake disk, its characteristics is that although normally also have a certain range, but when in fact the driver stepped on the brake, when its use, the more its friction coefficient will be stronger and stronger, so, this is carbon carbon and the difference between carbon ceramic brake disc.

　　Many people think that carbon brake should be used in the car or the super sports car, in fact I don't think the braking system of the so-called hierarchical, just see how you normally use. For example, if you want to use daily, but want to occasionally and don't want to track multiple investment, big can change a carbon ceramic brake system. Or you like to travel across the country, may often meet with some long slope, if know can take advantage of the gear to control speed, of course, but if you don't understand, replacement of a carbon fiber brake system is also can give you more security. To tell the truth, replace the brake system is to strengthen the safety of the vehicle, we don't need to let this security also coupled with a level.

　　Our company can produce carbon carbon brake, carbon ceramic brake system. Our products are exported to all over the world, quality assured, the price is reasonable.

　　If you have any need please contact us

Carbon fiber is one kind of special fiber consists of carbon element.it has high temperature resistant,good wear resistance,electrical conductivity,thermal conductivity,corrosion resistance etc.It’s fiber in shape,flexible,and could be machined into fabric.

Along the fiber axis direction,it has a high strength and modulus.density of the carbon fiber is low,so it has a high specific strength and specific modulus.

The most important use of carbon fiber is to be the reinforce which be manufactured as advanced composite materials with resin,metal,ceramic and carbon etc.

The carbonization processing of the precursor fiber,the raw material,carbon content below:

precursor fiber

The procedure of the 3 process above includes:

1. stabilizing treatment(200~400℃)
2. carbonization treatment(400~1400℃)
3. graphitization treatment(>1800℃)

In order to improve the bonding performance between carbon fiber and composite material,the surface treatment,sizing and drying are usually used. Another way to manufacture the carbon fiber is The vapor phase growth method. Under 1000℃,the mixed gas of methane and hydrogen with catalyzer could meet discontinuous and chopped carbon fiber,the max length is about 50cm. The structure of chopped carbon fiber is different from PAN or PITCH ones,it has an easy graphitization,good conductivity property etc.

　　What is Graphite Foil? - Graphite foil is a pliable graphite material with anisotropic properties similar to pyrolitic graphite. It is a good thermal and electrical conductor within the plane of the surface but a much poorer conductor through the thickness of the material. It also has a surface reflectivity several times that of ordinary graphite.

　　Graphite foil products are in stock as sheets, discs, rings & rolls in standard, commercial & high purity grades. All items are to customer requirements. Specialty products include gaskets, tape, die cut rings, carbon fiber yarn & foil yarn with cotton or wire core.

　　Graphite foil is an excellent sealing material for high temperature, high-pressure transfer of liquids, gases, steam, chemicals and corrosives. It is manufactured from high purity, high crystalline natural graphite flakes, which are processed into continuous foil by special acid and thermal treatments to produce expanded graphite crystals. The expanded graphite crystals are then formed into foil through a calendaring process without any resins and binders.

　　Benefits of using Graphite Foil

　　- Excellent thermal stability and reflectivity.

　　- High purity

　　- Low coefficient of friction & self-lubricating.

　　- no associated health hazards.

　　- Low electrical resistivity

　　- Resistant to high temperature of 450oC in air, 700oC in steam & 3000oC in vacuum (or reducing)

　　- Chemically inert with pH range of 0-14 (except strong oxidizers such as nitric or sulphuric acid).

　　- High thermal conductivity

　　- Highly anisotropic - electrical & thermal properties different parallel to & perpendicular to flakes.

　　- Excellent in-process longevity ?save replacement and down time costs.

　　Among others, graphite foil is potentially applicable to high and low temperature gaskets and to lubricate seals. It can be used also in ceramic hot pressing as a protector to punches and dies. Graphite foil also prevents adhesion of ceramic reactions and reduces friction erosion through the pressing and extraction process.

　　Graphite foil gaskets from Graphite Foil Fabricators Corp. are manufactured from sheet or roll products and will compact under only moderate bolt loads to fill irregularities in nearly all fluid sealing applications. Small, surface irregularities are more easily filled under lighter bolt loads thus reducing the need for costly surface refinishings. Rings that are made of compressed graphite foil are known as Die Formed Rings. As a leading Chinese graphite manufacturer and supplier, if you have any inquiry or demand of the graphite foil and sheet , graphite gasket and so on , please feel free to contact us .

　　Graphitization process is the key process in the processing of graphite electrode production, Physico-chemical properties of the graphite electrode is largely determined by the temperature of graphitization process, the graphitization temperature shall be above 2500 ℃.

　　Graphitization furnace used in the graphite electrode processing mainly use the direct method which include two types of the furnaces,one is Acheson graphitization furnace,and another one is LWG furnace.

　　1、Acheson graphitization furnace

　　Its main characteristic is contained into the roasting products constitute furnace resistance together with the resistance of material, the graphitization temperature will be 2000~3000℃.It is still widely used in China now.This furnace is characterized by simple structure, Strong and durable, easy to maintenance which is mainly the graphitization of equipment in the carbon industry.

　　The disadvantages of the Acheson graphitization process:

　　a) In fact, only about 30% of the energy is used for graphitized carbon process, the remaining energy did not play a role of should have, and power consumption is too large.

　　b) Acheson graphitization furnace core temperature nonuniformity, lead to the whole quality of furnace electrode non-uniform,so lead to graphitization quality instability.

　　c) The harmful gas is difficult to To recycle and dust work environment.

　　d) Production capacity is low

　　2、Internal heating type concatenated graphitizing furnace(LWG furnace)

　　The graphitization process without resistance material, is invented by kastner from the United States.compared with the acheson graphitization furnace,the LWG furnace Power consumption could reduce by 20% ~ 35%.

　　Now the LWG furnace could not completely replace Acheson graphitization furnace,But the LWG furnace has the advantage which the acheson graphitization furnace could not meet.

　　a) Heating speed

　　b) Low power consumption

　　c) The graphitization degree was homogeneous

　　d) No need of the resistance material

　　Though the acheson graphitization process and equipment have greatly improved,but the technology has been close to the limit, most promising is the LWG furnace of graphitization process.

　　If you need graphite or carbon products , We interested in supplying those materials for you.As a leading Chinese graphite manufacturer and supplier, we specialize in providing high quality graphite material, carbon carbon composites and graphite parts.To buy graphite and carbon products please contact us and ask our sales manager for a quote.

　　　Graphite electrodes are usually used for melting metal, such as aluminum melting and copper melting and so on. Graphite electrodes easier processing, and processing speed significantly faster than copper electrodes. For example, the use of milling machining graphite, its processing speed than other metal working 2 to 3 times faster and does not require additional manual processing, and copper electrodes require manpower grinding frustration. Similarly, if the high-speed machining centers graphite electrode, faster, more efficient manner, but also no dust problems. In these processes, select the right tools and graphite hardness can reduce the wear loss and damage of copper tools. If the time is relatively specific milling graphite electrode and copper electrode graphite electrodes, graphite 67% faster than the copper electrode in electrical discharge machining under normal circumstances, the use of graphite electrodes machining copper electrode faster than 58%.As a result, the processing time significantly reduced, while also reducing manufacturing costs.

　　Extruded graphite, the electrode material. Which according to particle size graphite points, can be divided into: the details of the graphite structure, coarse graphite (particle size generally about 0.8mm), there is a graphite electrode 3) lubrication: lubrication performance depends on the graphite flake graphite size, the larger scales, the smaller the friction coefficient, the better the lubricating properties.

　　If you need graphite or carbon by-products , We interested in supplying those materials for you. To buy graphite and carbon by-products please contact us and ask our sales manager for a quote.