The carbon fiber (carbon fiber, referred to as CF) is a new kind of fiber material with high strength and high modulus fiber with carbon content of more than 95%. It is a flaky graphite, micro crystalline and other organic fibers stacked along the axial direction of the fiber, it is obtained by carbonization and graphitization of micro crystalline graphite material. the quality of the carbon fiber is lighter than aluminum, but the strength is higher than that of steel, and it has the characteristics of corrosion resistance, high modulus, it’s important materials in the national defense and civilian areas . It has not only the intrinsic characteristics of carbon materials, but also the softness and processability of textile fibers. It is a new generation of reinforced fiber.

　　Carbon fiber has many excellent properties, carbon fiber has axial strength and high modulus, low density, high performance, no creep, non oxidation under the environment of high temperature resistance, good fatigue resistance, between heat and electrical conductivity between the metal and non metal, smaller thermal expansion coefficient and anisotropy, good corrosion resistance, good X Radiability. Good conductivity, thermal conductivity, good electromagnetic shielding, etc.. Compared with the traditional glass fiber, the young's modulus is more than 3 times; compared with Kevlar fiber, the young's modulus is about 2 times , it’s insoluble and non swelling in the organic solvent, acid and alkali , outstanding corrosion resistance.

　　Carbon fiber is an important strategic material for the development of national defense and national economy, it’s the key technology intensive material , with carbon fiber spun from academic research to long fiber carbon fiber, making use of carbon fiber heating material technology and products has gradually spread. Under the background of high-speed industrialization in the world today, the use of carbon fiber is becoming diversified. Chinese have made use of long fiber as a kind of high performance fiber, in high temperature, high physical stability of the occasion, carbon fiber composite materials have irreplaceable advantages higher than the strength of the material, the component weight smaller, higher than the modulus, the component stiffness is bigger, the carbon fiber is applied in military and civilian fields widely because of the excellent performance.

　　Carbon fiber material has been widely used in various fields of military and civil industry. From aerospace, aviation, automobiles, electronics, machinery, chemicals, textile and other civilian industries to sports equipment and leisure goods. Carbon fiber reinforced composites can be used in aircraft manufacturing and military field, wind turbine blades and other industrial fields, electromagnetic shielding materials, in addition to electric artificial ligament and other physical substitute materials and for the manufacture of rocket shell, motor boats, industrial robot, automobile plate spring and drive shaft etc.. Sports such as clubs. Carbon fiber is a typical new industrial material in the field of high technology.

　　The carbon fiber rope is made of carbon fiber, referred to as carbon rope. The polyacrylonitrile based carbon cord as an example, the commonly used 2 diameter, weight per meter 1.8g, minimum tensile load 100N, the maximum strength of 100N rings, the minimum ring strength 60N, ash content <0.5%, it is a kind of high temperature resistant materials and has excellent electrical conductivity.

　　Carbon fiber rope is made into carbon rope or braided rope according to customer's requirements. The carbon rope is a necessary ingredient of heat insulation material for high temperature furnace. It can also be used as conductive electrode. The carbon fiber rope has been widely used in various types of insulation furnace negative ion conductive electrode, vacuum. Various weaving layer carbon felt bundling, sewing, chemical, petroleum, food machinery, medical machinery, medical equipment, civil construction, the field of electronic instrument etc.. It also can be made into 2-12 carbon ropes or braided ropes according to the user's requirements.

　　The diameter of our carbon fiber rope are 0.5mm、Φ1mm、Φ2mm、Φ3mm、Φ4mm、Φ5mm、Φ6mm、Φ8mm、Φ10mm and so on.

　　The carbon fiber rope must be used in a protective atmosphere or inert gas when the temperature is above 400 C, . It can not be stressed , avoid moisture when transported or stored.we cut it according to the application requirements.

　　Our company also can produce other kinds of the carbon fiber products such as unidirection carbon fiber cloth and CFRP plate for strengthening the constructions. The bidirectional carbon fiber for different applications.please for free to contact us if you have the demand of our carbon fiber products. We will provide good quality products and high level service.

　　Graphite carbon plate adopts high quality graphite carbon material, and the organic compound with strong acid resistance is added. By high pressure molding, vacuum impregnation, high temperature heat treatment

　　The process is refined, has the special acid resistance and the temperature resistance performance, is the chemical industry phosphoric acid reaction trough, the phosphoric acid storage tank and so on equipment ideal lining material.

　　Excellent corrosion resistance

　　Products using carbon graphite material quality, adding organic compound with strong acid, effectively reducing the product porosity increases, the bulk density of the products, so the product has strong corrosion resistance and excellent wear resistance.

　　Stable performance, strong durability

　　The product is made of high strength organic glue as binder, and the high and new technology additive is introduced at the same time. Therefore, the product has the advantages of high strength, good wear resistance and stable structure, and the structure of the product does not change with the change of temperature.

　　Precise dimension

　　The product is of high quality and precise shape, and can produce special products according to the requirements of users.

　　Graphite carbon plate has the characteristics of wear resistance, temperature resistance, pressure resistance, corrosion resistance, creep resistance, oil-free self lubrication, small expansion coefficient, and excellent sealing property.

　　Use: pump, valve, fan, compressor, mixer, reactor, hydraulic pneumatic, electrical components, glass instrument, rotary joint, mechanical seal, pipe flange, petrochemical equipment, drying equipment, finishing equipment, chemical equipment, chemical machinery, rubber machinery, food machinery, machinery, machinery and other rotating fluid separation and the sealing member.

　　The graphite ring is made of flexible graphite or flexible graphite, which is molded into different sizes of ring products. Suitable for hot water, high temperature, high pressure steam, heat exchanger, nitrogen, organic solvents, hydrocarbons, low temperature liquids and other media. For compressors, pumps, valves, chemical equipment, instrumentation, etc.. Pressure (Mpa): 25 temperature (c): -200 ~ 850 line speed (m/s): pH value of 30: 0 ~ 14 graphite ring is divided into flexible graphite and carbon graphite ring. Carbon graphite ring is mainly used in mechanical rotating parts of the seal. Carbon graphite ring has the characteristics of high temperature, corrosion and wear resistance.

　　Graphite ring

　　English Name: Graphite ring

　　Flexible graphite or flexible graphite was used to prepare the packing, and the ring products with different sizes were molded.

　　Suitable for hot water, high temperature, high pressure steam, heat exchanger, nitrogen, organic solvents, hydrocarbons, low temperature liquids and other media.

　　For compressors, pumps, valves, chemical equipment, instrumentation, etc..

　　Pressure (Mpa): 25 temperature (c): -200 ~ 850 line speed (m/s): pH value: 0 ~ 14

　　Graphite ring is divided into flexible graphite and carbon graphite ring.

　　Carbon graphite ring is mainly used in mechanical rotating parts of the seal.

　　Carbon graphite ring has the characteristics of high temperature, corrosion and wear resistance.

　　Properties and characteristics of graphite ring:

　　1, good self-lubricating graphite ring

　　2, Shi Mohuan rebound coefficient is high

　　3, according to the needs of the user, according to the 45 degree oblique incision

　　Replacement procedure

　　If the graphite ring is damaged or the aluminum rod is cast in the absence of water blocking, the surface of the aluminum rod is rough, the graphite ring must be replaced.

　　1, loosen the mold of the four bolts, the mold from the mold.

　　2, remove the three O type sealing ring, with a special tool to unscrew the ring to remove the adapter plate.

　　3, loosen the mold of the two six angle bolts, the mold is divided into two pieces, note that take a O ring in between the two modules.

　　4, in a small rotary table will be put on the crystallization of the ring and rotate, with liquefied petroleum gas gun heating crystallizer until the graphite ring down.

　　5, put on the mold ring and put on the new graphite ring, pay attention to the small amount of material pressed graphite ring. Apply a lard to the graphite ring.

　　6, after the natural cooling back all the materials and clean up, pay attention to the small O ring and its position, the overflow hole alignment。

　　Graphite electrode is mainly in the petroleum coke and needle coke, coal tar pitch as binder, calcination, mixing, kneading, pressing, baking and graphitization, and made the processing machine, is a conductor in an electric arc furnace to form arc release electricity for heating and melting of the charge, according to the quality index level, can is divided into ordinary power, high power and ultra high power.

　　Instructions

　　1, by the wet graphite electrode, before use to dry.

　　2. Remove the foam plastic cap on the graphite electrode hole.

　　3, compressed air oil and water to clean up the spare graphite electrode surface and the hole threads; avoid using wire or metal brush cleaning cloth regiment.

　　4, the joint carefully into the end of the graphite electrode (not recommended directly into the furnace to replace the electrode removed) electrode hole, not to impact the thread.

　　5, the electrode sling (the use of graphite material sling) screw into the other end of the electrode hole.

　　6, lifting the electrode, the electrode to the standby pad fluffer joint end, to prevent the ground damage joints; rings with a hook into the spreader after lifting, lifting the electrode to smooth, prevent the electrode from B and other loose or fixed device collision.

　　7, the electrode to be connected to standby hanging above the electrode, electrode alignment hole slowly after falling; rotating standby electrode, the spiral hook electrode together with rotation in two decline; the electrode surface is 10-20mm, again with the compressed air cleaning electrode two and exposed part of the joint end; at last completely decentralized electrode. Not too hard, otherwise because of violent collision, will cause the thread electrode hole and joint damage.

　　8, use torque wrench to spare the electrode, until the end of the two electrodes in close contact (the electrode and the connection of the connection is less than 0.05mm).

　　In recent years the rapid development of mold industry, graphite materials, new technology and the increasing of the impact of the mold factory mold market, becoming the first choice of graphite mold making materials with good physical and chemical properties.

　　Mold is the most widely used basic equipment in industrial production, the mold industry is the basic industry of the national economy. In modern industrial production, stamping, forging, die casting, extrusion, plastic injection or other processing methods widely used in product parts, and forming mold of supporting the blank forming product in accordance with the requirements of the parts. A variety of tools and products used in our daily life and production, to the machine base body shell, the first embryo to a small screws, buttons and various household appliances, all have a close relationship with the mold. The shape of the mold determines the shape of these products, the quality and precision of the mold will determine the quality of these products. In recent years the rapid development of mold industry, graphite materials, new technology and the increasing of the impact of the mold factory mold market, becoming the first choice of graphite mold making materials with good physical and chemical properties. [1]

　　Excellent performance

　　1 excellent thermal conductivity and conductive properties of the thermal stability of low coefficient of good expansion of 2 lines and 3 anti heat shock resistance to chemical corrosion and most metal is not easy to react at high temperatures (above 4 in most copper matrix sintering temperature of 800 DEG C) intensity increases with the temperature of 5 has good lubrication and abrasion resistance 6 easy processing, good machining performance, can mold into complex shape and high precision

　　application

　　Graphite mould for continuous casting and semi continuous casting of nonferrous metals

　　In recent years, at home and abroad are being promoted by the molten metal state directly continuous (or semi continuous) the production of rods or pipes and other advanced production methods. Domestic copper, copper alloy, aluminum, aluminum alloy and other aspects have begun to use this method. It is considered that the artificial graphite is the most suitable material for the continuous casting or semi continuous casting of nonferrous metals. The production practice shows that due to the adoption of the graphite mold, because of its good thermal properties (thermal conductivity determines the solidification rate of metal or alloy), good self-lubricating performance factors such as mold, not only make the casting speed increased, and the ingot of precise size, smooth surface, uniform crystal structure, can be processed directly under the procedures the. This not only greatly improve the yield, reduce the loss of waste products, but also a substantial increase in product quality. There are two kinds of continuous casting methods: vertical continuous casting and horizontal continuous casting.

　　Mould for pressure casting

　　Artificial graphite materials have been successfully used in the pressure casting of nonferrous metals. For example, zinc alloy and copper alloy castings produced by pressure casting die made of artificial graphite materials have been used in automotive parts and so on.

　　Graphite mould for centrifugal casting

　　Shi Momo has been successfully used in centrifugal casting. The United States has been using the thickness of 25 mm or more of the artificial graphite mold centrifugal casting bronze sleeve. In order to prevent the loss of artificial graphite mold, can take some measures to prevent oxidation. After casting a certain number of castings, the size of the inner hole of the mold can be enlarged so as to be used for casting large size casing pipe if the inner surface of the mould is burnt.

　　Hot pressing die

　　Artificial graphite hot pressing die for pressure sintering has the following characteristics: one is if the hard alloy pressing temperature up to 1350-1450 degrees, the required pressure units can be reduced to 67-100 kg / cm2 (i.e. cold pressure 1/10) can; two is pressurized and heated in the same process get, the sintering of the compact sintering can be a short period of time.

　　Glass forming mould

　　Because the graphite material has chemical stability, not easily affected by infiltration of molten glass, will not change the contents of the glass, graphite thermal shock performance is good, the characteristics of small size changes with temperature, so in recent years in glass manufacture has become an indispensable tool material, it can be used to manufacture glass tube, pipe, mold and other kinds of funnel special glass bottle.

　　Sintering mould and other diamond sintering mould

　　It is widely used in the manufacture of semiconductor industry, which has been widely used in the semiconductor industry because of its low thermal distortion. In addition, also in the use of mould graphite mold cast iron, non-ferrous metal with the durability of the mold, the mold for casting steel, heat-resistant metal (Ti, Zr, Mo) aluminium heat welding of cast and welded rail for the mold etc.. Hot pressing sintered diamond tools with graphite mold, shouldering the dual role of the heating element and the mold support in diamond tool manufacturing process, the quality of the graphite mould, diamond tools directly affect the dimensional accuracy, shape etc.. Hot pressing sintering process requirements: temperature (1000 +. 2) C, molding pressure of 16 ~ 50 MPa, holding time of heat preservation pressure of 15 ~ 30 min. In this condition, both the requirements of molding and the heating element has a conductive graphite mold, high resistivity, sufficient mechanical strength, but also need to have good oxidation resistance and long service life, to ensure that the diamond tool precision and excellent performance. At present, the western developed countries manufacturing diamond tools materials graphite mould, mainly for graphite ultrafine particle structure, high purity and high graphitization degree, the average diameter of less than 15 m, and 10 m, average pore size of less than 2 m. The graphite mould made of the carbon raw material

　　High purity graphite refers to the carbon content of >99.99% graphite, widely used in metallurgical industry of high-grade refractory materials and coatings, military industrial explosive materials stabilizer, light industry, electrical industry pencil brush, industrial battery electrode, additives and catalyst in chemical fertilizer industry.

　　High purity graphite

　　Performance: flake crystal integrity, thin and good toughness, excellent physical and chemical properties, good thermal conductivity, temperature resistance, self lubrication, conductivity, thermal shock resistance, corrosion resistance and other properties.

　　Description: high pure graphite (also known as: flake high thermal conductivity toner) has the advantages of high strength, good thermal shock resistance, high temperature resistance, oxidation resistance, resistance coefficient, corrosion resistance, easy machining and other advantages, is the ideal inorganic non-metallic materials. For the manufacture of electric heating elements, the structure of die casting, high pure metal smelting crucible boat, crystal furnace heater, EDM graphite, sintering mold, tube anode, metal coating, semiconductor technology with graphite crucible, electron tube, thyratron and mercury arc rectifier with graphite anode, grid etc..

　　The characteristics and application of high pure graphite with high strength, high density, high purity, high chemical stability, high temperature resistance, compact and uniform structure, high conductivity, good wear resistance, self lubrication and easy processing characteristics, widely used in metallurgy, chemical, aerospace, electronics, machinery, nuclear power and other industrial areas. In particular, the large size and high quality high purity graphite, as an alternative material, has a broad application space in the fields of high technology and new technology, and has broad application prospects. [1]

　　Purification method

　　It is divided into two categories: one is wet purification, including flotation, acid and alkali, hydrofluoric acid; the two is the purification of the fire, including chlorination roasting and high temperature method

　　High purity graphite

　　Widely used in metallurgical industry of high-grade refractory materials and coatings, military industrial explosive materials stabilizer, light industry, electrical industry pencil brush, industrial battery electrode, additives and catalyst in chemical fertilizer industry. High purity graphite after processing, and production of graphite, graphite sealing material and composite material, graphite products, graphite antifriction additives and other high-tech products, various industrial sectors become important non-metallic mineral raw materials.

　　Fabrication and characterization of carbon fiber rod [1]

　　Carbon fiber rod is made of high - tech composite carbon fiber [2] raw silk impregnated with vinyl resin (high temperature curing). Carbon fiber has become the most important one of high performance fiber; carbon fiber with high strength, long service life, corrosion resistance, light weight, low density etc., are widely used in aviation kites, model aircraft, lamp bracket, PC equipment shaft, etching machine, medical equipment, sports equipment and other machinery and equipment. A series of excellent properties such as dimensional stability, conductivity, thermal conductivity, small coefficient of thermal expansion, self lubrication and energy absorption. It has the characteristics of high specific modulus, fatigue resistance, creep resistance, high temperature resistance, corrosion resistance and wear resistance.

　　Characteristic

　　1 light weight, high strength, it accounted for 1.4-1.5g/cm, only 1/4 of the steel, transportation and installation is very convenient, compared with plastic products, its strength is dozens of times of plastic products, so the lightweight carbon fiber rod is one of the remarkable characteristics of composite materials. [3]

　　2, corrosion resistance, aging resistance, long service life: carbon fiber rod can acid, alkali, salt, organic solvent and other corrosive erosion, in case of incomparable superiority to other metal corrosion field, and has good water resistance and anti ageing, both in the corrosive environment and bad the open, moist environment, the service life of up to 15 years.

　　3, good security, high impact resistance, strong design, modern industrial and agricultural products is one of the indispensable alternative materials.

　　Carbon brush, also known as brush, as a sliding contact, in many electrical equipment has been widely used. Carbon materials in the application of products are mainly graphite, graphite impregnated graphite, metal (including copper, silver) graphite. The carbon brush is the energy transfer device or signal between motor or generator or other rotating machinery of the fixed part and the rotating part, it is generally made of pure carbon coagulant, the general shape is square, stuck in the metal bracket, which has spring pressed it on the shaft, when the rotation of the motor, the power through the change which is delivered to the coil, as its main components are carbon, known as carbon brush, it is easy to wear. Should be regularly maintained to replace and clean up carbon deposits.

　　The carbon brush looks a bit like a pencil eraser. The volume is large and small. Carbon brush, as a sliding contact, has been widely used in many electrical equipment. The main products are graphite, graphite, graphite, metal (including copper, silver) graphite.

　　It is mainly on the effect of carbon brush and conductive metal friction; it's not like metal on metal friction as conductive metal on metal friction; conductive; friction force can be increased; at the same time where the transfer may be sintered together; and the brush is not; because the carbon and metal are two different elements of it; use mostly used in motor; shape is various; square and round etc..

　　The carbon brush is suitable for all kinds of motors, generators and wheel axles. It has good performance and long service life. The carbon brush is used for motor commutator or slip ring, as sliding contact body import and export current, its thermal conductivity, and good lubrication performance, and has certain mechanical strength and direction of the spark of instinct. Almost all motors use carbon brush, which is an important component of the motor. Widely used in all kinds of AC and DC generator, synchronous motor, battery DC motor, crane motor collector ring, various types of electric welding machine, etc.. With the development of science and technology, the types of motor and the working conditions are becoming more and more diversified

　　Specific function

　　1 the external current (excitation current) through the carbon brush to the rotor (input current);

　　2 the static charge on the main shaft is introduced into the earth by the carbon brush (grounding carbon brush);

　　3 the main shaft (ground) to the protection device for rotor grounding protection and measurement of positive and negative rotor voltage;

　　4 change the direction of the current (in the commutator motor brush, also plays a role reversal)

　　The electrode material is one of the key materials for vanadium redox flow battery. Due to the large surface area and good stability, the graphite felt is dominant. However, the graphite felt material has poor hydrophilicity, and its electrochemical activity is not good enough. This paper on the graphite felt electrode respectively chromic acid oxidation method, mixed acid electrochemical oxidation method and hydrothermal ammoniation method for processing vanadium redox flow battery to improve its activity, the main conclusions are as follows: after chromic acid oxidation, hydrophilicity and electrochemical activity of the Shi Mozhan electrode increased, the optimum processing time is 5 h. In the 10 to 70mA/cm2, the battery with the graphite felt after the treatment with the chromate has a good charge discharge performance.

　　The efficiency of the battery voltage is about 90.9% and the energy efficiency is up to 79.4% at mA/cm2. FT-IR and SEM show that the carbon fiber processing after the oxygen functional groups increased and the surface gully increased, the former increased the number of active sites on surface of carbon fiber in VO2+/VO2+ electrode reaction, which increases the contact area of vanadium ion and electrode. The hydrophilicity and electrochemical activity of the graphite felt electrode were obviously enhanced after the electrochemical anodization of sulfuric acid and phosphoric acid. The optimum treatment conditions were as follows: the current density was 50 mA/cm2 and the treatment time was 4min. The processing of graphite felt is loaded into the cell, showing good charge and discharge performance in 10 to 50 in mA/cm2, 20 in mA/cm2, the battery voltage efficiency of 88.2%, energy efficiency reached 79.6%. FT-IR and SEM tests showed that the oxygen functional groups on the surface of carbon fiber increased, and the surface roughness increased. The results of XRD show that the crystallite size and the space between the carbon fibers decrease, which indicates that the electrochemical oxidation etching the graphite crystallites in the outer layer, which is the reason for the increase of the surface roughness of the carbon fiber. For the first time put forward 180 degrees in the hydrothermal ammoniation of graphite felt electrode, hydrophilicity and electrochemical activity of treated graphite felt electrode increased, the optimum processing time is 15 H.

　　The processing of graphite felt is loaded into the battery, charge and discharge can be stabilized in 20 to 60 in the range of mA/cm2. In 20mA/cm2, the voltage efficiency can reach 83.7% and the energy efficiency is up to 85.3%. The reason lies in the improvement of electrode active carbon fiber surface increased nitrogen content of functional groups and nitrogen functional groups to enhance the positive charge density of the alkaline carbon fiber and its adjacent carbon atoms, to speed up the transfer speed of vanadium ions and electrons in the electrode / solution interface, improve the vanadium ion diffusion process, reduces the electron transfer resistance.