The Graphite Material of Photovoltaic Industry

As we know, graphite is widely applied , As technology has improved,high density, high strength, good isotropic graphite has become more and more useful, which is iso-graphite, iso-graphite is widely used in solar photovoltaic industry.

In the monocrystal or polycrystalline furnace, the most common products are graphite crucible, heating element, guide cylinder, graphite tray, heat shield an so on.

  Graphite hot zone of guide cylinder

  Graphite hot zone of heating element

  Polycrystalline graphite sabot

  Polycrystalline graphite parts

Graphite materials have excellent characteristics that other metal materials can not be replaced in solar photovoltaic industry, such as heating evenly, good earthquake-resistance,and prolong machinery  life-cycle at the same time.

Whether at home or abroad, the isostatic pressure graphite is preferable for graphite hot zone.Which is an important materials.

article from: http://www.xrdcarbon.com/industry_news/211.html 

Graphite Plate Is Better Material In Vacuum Furnace 

Tough Graphite Mold Market 2016

Kinds of Graphite Machining Parts XRD Has

XRD Graphite Manufacturing Co.,Ltd are focused on producing, processing and selling various types of graphite products, including all kinds of graphite machined parts and components.

With the development of China graphite industry, diversiform types and specifications graphite machining parts are growing gradually. As a professional graphite machining enterprise, XRD Graphite keep pace with the times, we have many kinds of graphite machining parts for sale now.

However, how many kinds of graphite machining parts does XRD have? Let us discuss about it. The familiar machining parts are popular in XRD. Such as various continuous casting mould, diamond sintering mould, polycrystalline graphite parts, machining parts  for nuclear industry, non-ferrous smelting mould, electrical discharge machining mould, and other kinds of graphite hot zone parts.

Graphite parts for vacuum furnace are also the main machining parts in XRD. Graphite heating element, graphite connector, graphite nuts, graphite bolts, graphite spacers, graphite studs protectors, graphite plates and graphite trays for heat treatment and sintering jigs,etc.

Another important machining parts in XRD is graphite cookware, we have fixed customer in Japan and professional technology to machine the graphite to satisfy the customers requirements.

 

Otherwise, XRD Graphite can customized according to customer’s drawings requirements or sample and OEM for production.

Article From: http://www.xrdcarbon.com/news/115.html

The Principle Of TCGS In XiaoMi Mobile Phone

One Case Of Graphite Material Applications 

1、What's Graphite?

Graphite is the allotropes of the carbon,by covalent bond each carbon atom is surrounding link with the other three carbon atoms (in multiple hexagonal honeycomb to arrange),to be covalent molecules.because each carbon atom will emit an electron, the electrons can move freely,so graphite belongs to the conductive body.graphite can be refractory material.graphite can be conducting material.graphite can be wear-resistant and self-lubrication material.because of chemical stability,graphite can be made in heat exchanger,reactive tank,condenser,combustion tower,absorption tower,cooling unit,heating element.graphite can save much material if used in petrochemical industry,hydrometallurgy,Acid and alkali production etc.The graphite is used as part of the cell phone design,we can see a lot of useful things.For example,Thermal Conductivity Of Graphite Sheet(TCGS) is used in the current mobile phone which mainly is the use of the thermal conductivity of the graphite.

2、What's TCGS?

TCGS,Thermal Conductivity Of Graphite Sheet.

it Is a kind of new thermal heat and dissipation material,it has the unique grain orientation,along the two directions it has same thermal conductivity,the layered structure of the tablets can be well adapted to any surface,to improve the performance of consumer electronics when it is shielding the heat source and components at the same time.

because of the plasticity of graphite, we are able to design into TCGS.we can make graphite material to like a sticker sheet,and make it stick attached to the inside of the mobile phone circuit board.it can also cut off the materials contacts,but also it plays a role of anti-seismic effect.

3、Introduce The Heat Dissipation Principle Of XiaoMi Mobile Phone

In the conference of XiaoMi mobile phone,lei jun was solemnly declared to the cooling characteristic of the XiaoMi mobile phone,through it is not the first time that the TCGS used  in the mobile phone,but it is rare to promote as a advantage.

Here we try to introduce it simply:

one of the hot source in XiaoMi mobile phone is CPU and Flash chip,therefore on these chips encapsulation layer,it has a "7" type of TCGS,the other side of the radiator is inside of metal plate in the middle of the above.While another larger piece of TCGS is in the middle of the metal plate on the other side in XiaoMi mobile phone,it connects the back of the screen.

So,when the phone don't be open, we can see the back of the screen and CPU/Flash heat can pass through the middle of the metal layer,it eventually makes heat uniformly,and fianlly it's for cooling through the flow of air.So,we can say that part of the heat will go through the LCD side auxiliary cooling,in addition,the back cover of mobile phone can also be cooled.

Therefore,we can say, XiaoMi mobile phone of TCGS is actually playes the role of the heat conduction,and the even distribution of heat,indirectly, that is the cooling effect.

Article Sorted By XRD Graphite Manufacturing Co.,Ltd, One Top Class Of Graphite Suppliers .

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Article From: http://www.xrdcarbon.com/industry_news/114.html

Super Graphite Material

According to England “daily mail” reported,scientists have developed a “super material”, its thickness is thinner than paper,but its intensity is more than steel.

The kind of new graphite material called “graphene paper”,this is a kind of composite materials which is based on graphite material.The facts prove that it is not only light weight,good strength,high hardness,with better flexibility than steel, but also it is a kind of environmental protection material.

Researchers are convinced that the birth of this material will triggers a revolution of business and industry,especially for automotive manufacturing and aerospace industry.

One of The study’s chief scientist Ali Reza Ranjbartoreh,he is one of the researcher of XRD Graphite Manufacturing Co.,Ltd said: “in order to get the unique mechanical properties of graphene materials.no one has ever done such test production and thermal environment.we are far ahead of the others in the reaserach. ”

He said: “the outstanding mechanical properties of graphene material make it has a good application prospect in commercial and engineering field. the material is not only lightweight,high strength,good flexibility, but also it can be recycled, so it’s more economy environmentally friendly.

first,Scientists grinded graphite raw materials finely, then used the chemical methods to the purification.Then at the nanoscale to reshape the graphene synthesis material,finally got the super graphite material.

The final product is 6 times lighter than the steel material,and the density is lower than steel 5 ~ 6 times, but the hardness is 2 times higher and bending stiffness is 13 times to steel.

XRD Graphite Manufacturing Co.,Ltd—-China Graphite Machining,Graphite Manufacturers,Graphite Material Suppliers,Graphite Suppliers.

Official Website:http://www.xrdcarbon.com/

Article From: http://www.xrdcarbon.com/industry_news/111.html

Difference between Synthetic Graphite and Natural Graphite

The main raw material of Synthetic Graphite is high quality calcined petroleum coke, with adding asphalt to be bonded, and add some other materials. After preparing these raw materials, they should be  pressed into mold, then graphitize them in the non-oxidation environment  with 2500-3000 ℃. After calcining with high temperature, the components of sulfur, ash, and gas are greatly reduced.

The calcining of petroleum coke is mainly in order to remove sulfur, moisture and volatile. They have to be calcined with the temperature of 1200-1350 ℃, only by these can be formed basically pure carbon because of the high impurity content of raw petroleum coke.

Natural graphite can be divided into flake graphite and microcrystalline graphite. Flake graphite need to be purified chemically, or heated to high temperature to decompose and volatile the oxide.Flake graphite production is low, and the price is high. Microcrystalline graphite is of high ash content, it should not be used as casting recarburizer commonly.

Generally, the cycle of synthetic graphite is better than natural graphite, which is more attractive with reasonable price. Natural graphite is soft. If the compaction is higher, it can make the grain transform, and fluid absorption capacity decline sharply.

Article From china graphite manufacturers company-XRD Graphite Manufacturing Co., Ltd.

Article From: http://www.xrdcarbon.com/news/109.html

The Advantage Of Graphite Electrode Compared With Copper Electrode

Compared with copper electrode,graphite electrode has the following advantages:

1)Processing speed is faster

processing speed is the volume of metal removed per hour.the processing speed of graphite electrode is faster than copper electrode of 1.5 ~ 3 times,

graphite electrode can be worked at Large area Under the condition of high current,and copper electrode has low melting point,the current of copper electrode will be limited.

2)Resistance to wear and tear

machining accuracy is the outline dimension tolerance size after the workpiece machining,which is closely related Electrode material is resistant to wear and tear or not.

There are several kinds of edm, the electrode material will be dissipated;Such as volume loss,Loss of face,loss of side,end face and Angle losswhen it is processed,the Angle of jiao electromagnetic field density is the largest,if experimenting on iron powder,it can be found most Angle of iron powder absorption.So in the above four kinds of loss, maximum Angle loss and Angle determines the service life of the electrode loss.so the final form is determined by the electrode Angle and the edge of the electrode loss,therefore,if the electrodes are the weakest parts,which can effectively resist wear and tear,electrode will have the longest life.

graphite electrode which is melting point 2000 ℃ higher than the copper and intensity is bigger than copper,so when it is processed,the Angle of loss is very small, which means that the superfine graphites service life is long,the processing cost is lower than copper electrode.

Article From china graphite machining company-XRD Graphite Manufacturing Co.,Ltd

Article From : http://www.xrdcarbon.com/news/108.html

XRD Graphite provides graphite materials

XRD Graphite provides custom graphite machining services to produce parts and components per customer specifications, technical drawing, rough sketch, or even a Concept. We utilize our processing techniques and facilities, CAD designer and qualified technicians with years of machining experience to produce consistent graphite products to meet current market demands.
laces.The reporter understands from heilongjiang province bureau of quality and technical supervision, completion in jixi country of graphite products in heilongjiang province, quality supervision and inspection center through the review will be put into use in August.In the graphite producers to establish national graphite products supervision and inspection center, fill in the north of the Yangtze river is omnibus the blank of graphite products supervision and inspection.
It is understood that the panel to the state of graphite products quality supervision and inspection center of personnel, equipment, environment, technology ability, management ability and 44 415 clause has carried on the comprehensive evaluation factors of quality.The panel concluded that state quality supervision and inspection center of various graphite products can satisfy the requirements of national and international standards.
Graphite is an important industrial and agricultural production is the basis of raw material and strategic materials.65% of the world's graphite in China, China 60% of the graphite in heilongjiang, heilongjiang 50% of graphite in jixi.At present, jixi has proven reserves of about 540 million tons of graphite resources, prospective reserves of 850 million tons, among the top of the Asia.
The establishment of national graphite products quality supervision and inspection center will provide a new graphite materials industry quality inspection testing, technical service platform, promote new graphite materials industry healthy and rapid development.Graphene, the world's most thin, the hardest, nanomaterials have been technology as the "magic of material", have a variety of special physical properties and has extensive application prospect in the field of military and civilian.Graphene as material, many products can change the industrial field.

factory shopfloor

China make important discoveries in the field of graphene application exploration: graphene under the effect of light the movement of the phenomenon, this finding can be used as a new source of power in space, as a new kind of generating set are possible.After repeated experiments and demonstration, the Beijing century technology co., LTD. (hereinafter referred to as carbon century) shows the great application found, and the device was developed successfully, fully shows the "light suspended" phenomenon in graphene materials.Describes the phenomenon of "light suspended carbon century: graphene characteristic of the single atomic layer structure can convert light energy to kinetic energy.Embodied in the beam vertical irradiation graphene in the tube at the bottom of the ball, as the light intensity gradually changed from small to big, graphene ball began to move up, finally in light intensity, stable graphene ball to stop moving up, its overcome gravity and to the original position to produce displacement (10 cm - 80 cm), under the action of gravity and wall adhesion "suspended" in the glass tube.
Significance: provide inexhaustible source of powerGraphene materials can converts