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What Is Graphite ?

Graphite, also called plumbago or black lead. Graphite has a layered structure that consists of rings of six carbon atoms arranged in widely spaced horizontal sheets. Graphite thus crystallizes in the hexagonal system, in contrast to the same element crystallizing in the octahedral or tetrahedral system as diamond. Such dimorphous pairs usually are rather similar in their physical properties, but not so in this case. Graphite is dark gray to black, opaque, and very soft (with a hardness of 1 1/2 on the Mohs scale), while diamond may be colourless and transparent and is the hardest naturally occurring substance. Graphite has a greasy feel and leaves a black mark, thus the name from the Greek verb graphein, “to write.” For detailed physical properties of graphite, see native element (table).

Graphite is formed by the metamorphosis of sediments containing carbonaceous material, by the reaction of carbon compounds with hydrothermal solutions or magmatic fluids, or possibly by the crystallization of magmatic carbon. It occurs as isolated scales, large masses, or veins in older crystalline rocks, gneiss, schist, quartzite, and marble and also in granites, pegmatites, and carbonaceous clay slates. Small isometric crystals of graphitic carbon (possibly pseudomorphs after diamond) found in meteoritic iron are called cliftonite.

Graphite is used in pencils, lubricants, crucibles, foundry facings, polishes, arc lamps, batteries, brushes for electric motors, and cores of nuclear reactors.Graphite products such as graphite rods, graphite blocks, graphite plates etc. It is mined extensively in China, India, Brazil, North Korea, and Canada.

Graphite was first synthesized accidentally by Edward G. Acheson while he was performing high-temperature experiments on carborundum. He found that at about 4,150 °C (7,500 °F) the silicon in the carborundum vaporized, leaving the carbon behind in graphitic form. Acheson was granted a patent for graphite manufacture in 1896, and commercial production started in 1897. Since 1918 petroleum coke, small and imperfect graphite crystals surrounded by organic compounds, has been the major raw material in the production of 99 to 99.5 percent pure graphite.

article from: http://www.xrdcarbon.com/industry_news/231.html

Graphite Industry Moves Toward The High-end

Advantages Of Carbon-Carbon Composite Material

#graphite

Graphite Industry Moves Toward The High-end

Development of low-end of chinese graphite industry is seriously hurt resource protection and industrial upgrading. with the rapid development of modern science and technology and the country's new materials, the field of new energy broaden continuously, graphite industry is facing the same fate with rare earth: due to the low threshold which leads to over-exploitation of resources, the low end of the industry, low deep processing technology, a few companies monopoly control, lack of unified planning and regulation, and all these situation restrict the healthy development of graphite industry.

According to the records of Bureau of Customs, datas show that China graphite is major exporting to japan, south Korea, the united states, india, russia, japan and south korea import large quantities of graphite material from china, the price per ton only a few thousand dollars, after its purification process re-export to china, the price per ton of 10 million -20 million.

In Inner Mongolia, Shandong, Heilongjiang, Hubei, Hunan and other places of rich graphite, graphite industry is basically still in the process of mining the primary stage of the production of raw materials, graphite products, quality and technical level are all backward, so as to form a waste of resources, environmental pollution , and the cycle of low efficiency, and lack of funds, lack of information, lack of talent is also fatal factors to these graphite companies, china graphite companies are most are still at a loss.

article from: http://www.xrdcarbon.com/industry_news/225.html

Advantages Of Carbon-Carbon Composite Material

The Graphite Material of Photovoltaic Industry

#china graphite

Advantages Of Carbon-Carbon Composite Material

Carbon-carbon composite material is a material made of high strength carbon fiber and carbon matrix after the process of graphitization, it can be widely used in various types of structures, heaters and containers under high temperature environments.

Compared to graphite materials and other materials,What are the main advantages of carbon-carbon composites material?

1）High intensity (five times stronger than steel);

2）High temperature resistance (still maintain excellent mechanical and electrical properties at 2000 ℃);

3) Thermal shock resistance;

4) Low thermal expansion coefficient;

5) Small heat capacity;

6) Low density (1.7);

7) Excellent corrosion resistance and radiation performance.

It can be mainly used in industries such as aerospace、auto industry、chemical, textile and machinery manufacturing and medical field etc.

article from: http://www.xrdcarbon.com/industry_news/221.html

The Graphite Material of Photovoltaic Industry

Graphite plate is better material in Vacuum Furnace

#graphite

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

#graphite material

Graphite plate is better material in Vacuum Furnace

Graphite plates used for vacuum furnace, which is generally resistant to 2,000 degrees celsius, the other materials are not up to such a high temperature.and graphite is the most electrically conductive non-metallic minerals in the nature, its temperature can reach 30 degrees celsius temperatures, and it is the best conductive material, so it's applied to vacuum furnace、heat treatment furnace. Ceramics can also be resistant to several thousand degrees, but the ceramics are not non-conductive, so they are just used to make protective sleeve, not the heating rods.

Graphite plates used in vacuum furnace,if they are different materials selected, its life is different, oxidation time will be also different. in general, poor material of graphite rod, after heating, the oxidation will speed and be not durable, and then the surface oxidised, it will become broken easily. so high density graphite plate is the best choice. as top graphite plates supplier, XRD Graphite Manufacturing Co.,Ltd offers high purity graphite、high density graphite and high strength graphite.

article from: http://www.xrdcarbon.com/industry_news/209.html

Tough Graphite Mold Market 2016

How To Prolong The Service-life Of Graphite Plate

#graphite plates #graphite plate suppliers

Tough Graphite Mold Market 2016

Now, with the global scarcity of resources, raw material price increases much more than before, so the cost of graphite mold rises too. some of graphite molds suppliers can not afford the cost and "close the door". some large companies have started new ideas of graphite mold market to find a new way.

Graphite mold enterprises are facing heavy pressure:

1、The rapid rise in prices of raw materials make graphite mold rises price at almost months or even one or two months, some large graphite mold companies had to cut profits.

2、Due to the impact of national policies,huge domestic graphite mold industry is also facing increasingly intense competition.

3、From the consumer in terms of market players, consumers have become more rational than before, a very sought-after price promotion also has lost the power.

Cooperation and competition of graphite mold suppliers:

For graphite mold companies, they must identify the market position、customer orientation、brand positioning, establish a unique brand personality, enhance their competitiveness and occupy and expand the market.

In addition, the agreement between the future market needs related companies coexist to form groups to occupy the market. This requires companies to be good to share the benefits with others, so that companies can win-win.

Graphite mold market forms a new pattern of brand segmentation:

Brand integration, capital operation, the enterprise alliance is the more active,these are notable feature of graphite mold industry this year, such as graphite molds for silver、graphite molds for copper、graphite molds for glass etc.the industry reshuffle soon, the competition will force the brands companies segment customers in the market, new pattern segment formed in the brand.

article from: http://www.xrdcarbon.com/industry_news/206.html

How To Prolong The Service-life Of Graphite Plate

Market Analysis Of China Graphite Molds 2015

#graphite mold #graphite molds #custom graphite molds #graphite molds suppliers

How To Prolong The Service-life Of Graphite Plate

Graphite plate is widely used in many industries, so the maintenance is importmant for customers. as one of topgraphite plates suppliers-XRD graphite makes a few considerations and advices as follows:

1)The amount of current increased to Graphite plate, the higher temperature of the appearance for graphite plate. It recommends to use as small as possible load density (power).

2)Parallel connection for the grpahite plates, avoiding to be broken for the rapid increase of resistor.

3)After the graphite plate heated in the air, the appearance of graphite plate will constitute a dense silicon oxide film, playing the effect of extending service-life.

4)When graphite plates used continuously, resistor need to be added slowly to delay service-life.

5)the higher temperature,the shorter service-life for graphite plates. in the furnace of 1400℃ or above,oxidation rate will accelerate to shortened the service-life. so try not to let the temperature of the graphite plate surface too high when used in the process.

article from: http://www.xrdcarbon.com/industry_news/203.html

Market Analysis Of China Graphite Molds 2015

Carbon Graphite Products‎–The Foundation Of The Photovoltaic Industry

#graphite plates #graphite plate suppliers

Market Analysis Of China Graphite Molds 2015

It was hard for graphite molds industry in 2015, real estate industry of national macro-control makes it cool down, and it also has brought big impact to the graphite molds industry that the real estate is closely related.from the begining of the year, except some big merchants, the rest of most small and medium-sized graphite molds suppliers both have fallen in terms of volume and prices.

1、The analysis of overall price level

From may to december of 2015, graphite mould industry has experienced a trend of a fall after rise, price rebound finally by the end of year.

2、The analysis of overall business situation

On the whole 2015 graphite mold market has grown steadily. in may and june, the market ushered in the peak of purchasing. the popular graphite molds are conventional graphite molds parts products、graphite molds building products、especially sanitary graphite mold products, wire and cable products, instrumentation products, mechanical and electrical equipment products. the sales of these types of products has increased largely, which was far more than expected business.

3、Predictive analytics of Graphite mould market in 2016

2016, China graphite mould industry is gradually emerging from the financial crisis, the market is getting warmer. our graphite mold companies not only maintenance the international markets in Europe and America, but also seek the opportunities to invest larger market abroad.

article from: http://www.xrdcarbon.com/industry_news/196.html

Carbon Graphite Products‎–The Foundation Of The Photovoltaic Industry

How To Improve The Oxidation Resistance Of Graphite Products

#graphite molds #graphite molds suppliers

Carbon Graphite Products‎--The Foundation Of The Photovoltaic Industry

Carbon graphite products are the foundation of solar photovoltaic industry and both are interdependent. carbon graphite is applied to polycrystalline silicon pv modules、monocrystalline silicon pv modules in the photovoltaic industry. due to the properties of better density、hardness、compressive degree and very good high temperature resistance, high pressure resistance, corrosion resistance, good electrical conductivity, stable performance, etc, carbon graphite material can be made to the heating container--graphite crucible which can be used graphite hot zone of silicon ingot manufacturing etc.

Because the market of photovoltaic industry is dominated by policy,so the key to reduce the cost is the graphite materials chosen. if the graphite material is not ready, it is difficult to improve the photoelectric conversion efficiency and reduce the cost. and if graphite material has low purity, too many impurities, then the quality of the chip is not guaranteed, so the result is efficiency of solar cells can not have a lift.

XRD Graphite Manufacturing Co.,Ltd supplies high purity graphite, high strength graphite, high quality grpahite, and provide best customer service.

article from: http://www.xrdcarbon.com/industry_news/192.html

How To Improve The Oxidation Resistance Of Graphite Products

Applications Of Graphite Bearing In Mechanical Industry

#graphite products #graphite

How To Improve The Oxidation Resistance Of Graphite Products

graphite has good characteristics such as electrical conductivity, thermal conductivity, high temperature resistance, corrosion resistance etc. So that it can be widely used in kinds of industries. However, how to prolong the service life of the graphite products? It is absolute principle to improve the oxidation resistance in the high temperature environment.

After high temperature anti-oxidation coating processing, graphite electrode, graphite crucible, graphite rods can be seep into the pores by the liquid, a layer of protective film is formed on the surface of the graphite crucible, which can prevent air directly from contacting with the graphite electrode, graphite crucible, graphite rod to avoid oxidation reaction, after dipping coating of the antioxidant treatment, which can’t crack and spall in high temperature changes as to extend the lifetime by effectively delaying the oxidation.

article from: http://www.xrdcarbon.com/industry_news/189.html

Applications Of Graphite Bearing In Mechanical Industry

Shanghai Cooperation Organization Summit Held in Zhengzhou

#graphite rods #Graphite Products

Applications Of Graphite Bearing In Mechanical Industry

A bearing is one of the commonly used sliding parts in the machinery industry.graphite bearing is based on the graphite materials with the development of mechanical equipment requests.graphite bearing has different fetures such as self-lubricating,high temperature resistant,corrosion resistance,much light etc.

With the development of the science and technology,ceramic ball bearings and carbonization silicon bearing are developed,graphite bearing has been further widened such as bronze graphite oil-retaining bearing,inlaid graphite bearing.customers have greater space to choose different kinds of graphite bearing for different industries.because of the plasticity and special material function,carbon composite bearing will be the development direction of bearing material.

Due to the special performance of the graphite bearing,it will have great development in the future and will have more applications in many industries.

article from: http://www.xrdcarbon.com/news/185.html

Shanghai Cooperation Organization Summit Held in Zhengzhou

The Difference Between High Purity Graphite And High Strength Graphite

#graphite bearing

Shanghai Cooperation Organization Summit Held in Zhengzhou

Congratulations to the Shanghai Cooperation Organization Summit Conference! It is really good news for us that the 14th Shanghai Cooperation Organization Summit is holding in Zhengzhou.

Zhengzhou city is Henan provincial capital,which is loaded in central China. I am proud of being a member of Henan Province.

The Shanghai Cooperation Organization Summit Meeting is held from December 14th to December 18th 2015. With the meeting of Shanghai Cooperation Organization, we are sure of achieving new changes of economic development in Henan.

As Top Graphite Supplier,XRD Graphite Manufacturing Co.,Ltd has many international and domestic business,we will also seize the opportunity and make new breakthrough development.

http://www.xrdcarbon.com/news/178.html

The Difference Between High Purity Graphite And High Strength Graphite

The Application Of Graphite Plate

#xrd graphite

The Difference Between High Purity Graphite And High Strength Graphite

The Difference Between High Purity Graphite And High Strength Graphite:

1、the applications of high purity graphite in the semiconductor industry.includes applications of the single crystal furnace and semiconductor materials such as mandarin sip,dish etc and the devices of high purity metals.High temperature graphitization, mostly by moulding or isostatic pressing molding.High temperature of graphitization which is mostly by molded graphite or isostatically pressed graphite.10~20Hm of pyrolytic graphite is covered by some high purity graphite devices to avoid to be oxy-genated.

2、the applications of high strength graphite in the rocket engine.the material must satisfy the conditions of the harsh working:2000 degrees to 3500 degrees.the advantages of high-strength graphite is its light-weight,heat stability and better heat resistance.

As one top china graphite supplier,XRD Graphite Manufacturing Co.,Ltd has lots graphite material for customers,hope we can have a good cooperation.

article from: http://www.xrdcarbon.com/news/177.html

The Application Of Graphite Plate

The Process Of Graphite Formed

#high purity graphite

The Application Of Graphite Plate

Graphite plates is the most used in the semiconductor field,and also in the fields of the solar cell,sensors,nano electronics,high performance electronic devices,composite materials,emission materials etc.

Now graphite plate is no longer our uperficial cognition-just application in electrode.Now graphite plates play a important role in many industries.

Graphite plate products has become the focus of marketing research again,and reported in 2015 for the first time.Graphite plate products will invest $120 million this year,a jump of 12.6 percent over the same time last year.about the sales of graphite plate products and development, following factors are stressed:

1、Open up a new and large market,the sales of graphite plates will hugely increase.

2、Build a more efficient sales team,providing the new power of support for enterprise development.

3、Learn the experience from international graphite suppliers and graphite machining enterprises,to establish a clear structure and with international vision and demonstration significance of graphite plate products and act on international convention,Promote the development of industrialization in the graphite plate products and the improvement of the industrial structure.

article from: http://www.xrdcarbon.com/industry_news/176.html

The Process Of Graphite Formed

XRD Graphite: Graphite Products Loaded For Customers

#graphite plates

The Process Of Graphite Formed

Graphite is widely used in many industries,such as EDM,Metal Continuous Casting,Metallurgical Industry,Nuclear,Photovoltaic,Vacuum Furnace etc.synthetic graphite is the most used in industries.

According to the formed of methods it can be divided into the following kinds:

1、Isostatic graphite

2、Molded graphite

3、Squeeze graphite

According to the particle physics degree of the graphite,it can be divided into the following kinds:high purity graphite,coarse graphite and graphite electrode.

With the advanced production processing equipments,modern production management,perfect product testing methods,and good network service and strong capability of research,XRD Graphite Manufacturing Co.,Ltd is always providing best graphite machining services for customers.such as graphite crucible,graphite cookware,graphite molds etc.

article from: http://www.xrdcarbon.com/news/175.html

XRD Graphite: Graphite Products Loaded For Customers

Main Application of Graphite Crucible

#xrd graphite

XRD Graphite: Graphite Products Loaded For Customers

Nov of 2015,the weather is cold,few people is on the road.morning of Nov 25,our workers was busy loading the graphite products for customers,due to the heavy weight of graphite,forklift was used,they cooperate smoothly.it's worth for our effort for customers.

As one of top graphite suppliers,we believe that we can make it for customers.

article from: http://www.xrdcarbon.com/news/174.html

Main Application of Graphite Crucible

Advantages Of Vacuum Furnace Graphite Parts

#xrd graphite

Main Application of Graphite Crucible

Graphite crucibles have good thermal conductivity and high temperature resistance. as a graphite machining product,Thermal expansion coefficient is small.

It has a certain strain resistance to acid and alkaline solution of strong corrosion resistance and excellent chemical stability.It is widely used in metallurgy, casting, mechanical, chemical and other industries.

In recent years, XRD Graphite adopted high temperature resistant composite material, such as: silicon carbide, alumina, ferrosilicon do skeleton of the crucible, clinker, etc. It has significant effect in improving crucible product quality, enhancing the crucible density and mechanical strength.

article from: http://www.xrdcarbon.com/news/173.html

Advantages Of Vacuum Furnace Graphite Parts

Congratulations! Nice Business Trip To CHTF 2015

#graphite crucibles

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