Because of the unique properties of carbon-graphite materials, it has a strong vitality when applied in mechanical industry. In particular, running at high temperatures (or ultra-low temperature), mechanical equipment in strong corrosive medium, because of the use of carbon graphite mechanical parts, so that lubrication and corrosion-resistant problems have been satisfactorily resolved, Minchi development speed, only a few decades, carbon and graphite materials have become a mechanical manufacturing industry in one of the general materials. Currently widely used in the manufacture of bearings, piston rings, seals ring, pumps and valve parts, protection kits, bearings, explosion-proof devices and paper machine, such as adsorption tablets.
The use of carbon graphite products in mechanical engineering, from the perspective of the use of the following requirements:
1) The product has the permeability;
2) The products have as much as possible to reduce the grinding performance;
3) Products have good thermal conductivity;
4) The coefficient of thermal expansion of products is small;
5) Products have high corrosion resistance;
6) The mechanical strength of the products, especially the impact resistance;
7) Carbon Graphite materials should have good mechanical processing performance;
8) It is required that the wear and tear should be small, whether used in the condition of thousand or wet type.
9) The price of finished goods is cheaper.
According to the characteristics of the production process, the mechanical carbon graphite material can be divided into the following six categories: Each category has several different grades
1) Calcined hard carbon graphite material;
2) Artificial graphite material;
3) The roasting and graphitization materials of the dipping resin;
4) Roasting and graphitization of impregnated metal materials:
5) Graphite material with polymeric resin as binder;
6) Anti-wear Graphite coating material.
Adsorption of expanded graphite on water pollution control, has a large number of research results, in terms of controlling oil, organic pollution of water body, far more effectively than current conventional activated carbon expanded graphite and economic. Expanded graphite inconvenient transport, application site preparation needs. Expanded graphite preparation of environmental protection, use, recovery, recycling a certain degree of technical difficulty, coupled with enough attention to environmental protection in the past, eg industrialization of eco-friendly materials have not been able to. Now expanded graphite material technical base for the industrialization of environmental protection has, from both the technical level of this project.
Increasingly frequent oil and organic water pollution emergencies, special ships for construction of integrated water and environmental protection, enclosure, pumping and other traditional means and high oil absorption of expanded graphite can be combined to improve pollution control capacity. This is a systemic project involving cross-sectoral, multidisciplinary, involving ships, marine management (maritime), and environmental protection, involving science and technology of mechanical, materials, chemical, thermal, environmental protection and so on. It is a difficult project, but after the completion of the environmental benefits, technology will be the world’s leading.
The Dragon Boat Festival, also known as the Dragon Boat Festival, Dragon Boat Festival and Tianzhong Festival, originated from the worship of natural phenomena and evolved from the Dragon sacrifice in ancient times. During the midsummer Dragon Boat Festival, Canglong Qisu flies up to the middle of the sky, which is the most “middle” position in the whole year. That is to say, “flying dragon is in the sky” in the fifth chapter of qiangua in the book of changes. Its origin covers the Ancient Astrology culture, humanistic philosophy and other aspects, and contains profound and rich cultural connotation. In the process of inheritance and development, it blends a variety of folk customs into one, and the festival customs are rich in content. Dragon Boat picking and rice dumpling eating are the two major customs of the Dragon Boat Festival. These two customs have been handed down in China since ancient times, and have been going on ever since.
Dragon Boat Festival, Spring Festival, Qingming Festival and Mid Autumn Festival are known as China’s four traditional festivals. The Dragon Boat Festival culture has a wide influence in the world, and some countries and regions in the world also have activities to celebrate the Dragon Boat Festival. In May 2006, the State Council listed it in the first batch of national intangible cultural heritage list; Since 2008, it has been listed as a national legal holiday. In September 2009, UNESCO officially approved its inclusion in the list of representative works of human intangible cultural heritage. The Dragon Boat Festival became the first festival in China to be included in the list of world intangible cultural heritage.
Recycled graphite carbon rod, simply said is roasted and pressed by graphite powder. Compared with graphite electrode rod, it has no graphitization in the process. Raw material is certainly different. The cost of graphite electrode rod is higer a lot. The density of recycled graphite carbon rod is higher than graphite electrode rod, respectively are 1.7 and 1.58. However, in the actual production, recycled graphtie carbon rod could not replace graphite electrode rod. With the development of science and technology, study and develop graphite application has a new develpment and discovery.
Compared with graphite electrode rod, conductivity of recycled graphite carbon rod is bad. If the requirement of resistance is more strict, graphite electrode rod should be used. If it is used for furnace, then recycled graphite carbon rod is more durable as it also has the heat resistant performance. The main reason is that the price is cheap. If it is used for stirring liquid, recycled graphite carbon rod could also be selected with good corrosion resistant performance. But if it is used for smelting process, graphite electrode rod should be used without no doubt. As it has strict requirement of physical index, recycled graphite rod could not be replaced.
In this artical, Raygroup graphite and carbon electrode will talk about the features of molten copper graphite crucible.
1. Density is between 2.2-2.3, the density is the density of the crucible of the world’s largest, high density making the crucible with the best thermal performance. Its thermal conductivity is better than the other brand crucible.
2. the glaze layer comparison
Aluminium graphite Crucible appearance there are four specially made glaze layers, coupled with dense material, both of which greatly improves the corrosion resistance of products, extending its life; Crucible made only one layer of cement on the surface. Extremely easy to damage the surface resulting in premature oxidation of crucible.
3. the contrasting comparison
Of ingredients all natural graphite crucible. Very good thermal conductivity. Made using synthetic graphite crucible, and in order to reduce costs and to reduce the content of graphite, due to technology reasons, manufacturers added a large number of clay to make it easy to shape. Significantly reduces the thermal conductivity.
4. packaging comparison
Crucibles for melting copper graphite crucibles are often used rope to tie wraps.
International Children’s Day is scheduled for June 1 every year. In commemoration of the leditzer massacre on June 10, 1942 and all the children who died in the war all over the world, we oppose the maltreatment and poisoning of children, and safeguard the rights of children.
In November 1949, the International Federation of democratic women held a council meeting in Moscow. Representatives of China and other countries angrily exposed the crimes of killing and poisoning children by imperialists and reactionaries in various countries. The meeting decided to take June 1 every year as the international children’s day. It is a festival set up to protect children’s rights of survival, health care, education and custody, to improve children’s lives and to fight against child abuse and poisoning. Many countries in the world set June 1 as children’s day.
In the homogenization of the competition intensified today, the mold graphite enterprises only with a professional spirit of innovation, do a good job of brand culture, can win the attention of everyone and the broad masses of consumers. For the manufacturing industry, to achieve long-term development, the maintenance of professionalism is undoubtedly an important survival principle. On this basis, the indispensable is a brand innovation ability. In turn, innovation can inject vitality and impetus into mould graphite enterprise, which is also the important guarantee for mould graphite enterprise to keep professionalism.
Hot pressing die mould: Artificial graphite hot pressing die used in the compression sintering of cemented carbide has the following characteristics: First, if the pressing temperature is raised to 1350-1450 degrees, the unit pressure required can be reduced to 67-100 kg force/square centimeter (that is, 1/10 of the cold pressure pressure); Second, the pressure and heating in the same process, after a short period of sintering will be able to obtain dense sintered body.
Package of graphite electrode:
1. Separate loading: electrode and joint are packed separately and load respectively.
2. Connection type: one side of electrode connects with joints and then ship by container. The function of package: protect the electrode from damage when storage and transportation, specially protect the screw part from damage.
Storage and transportation of graphite electrode:
When swing or transship electrode, be careful to operate to avoid electrode falling down and damage the electrode.
In order to protect the electrode surface and electrode thread, please do not use cleek to hang the two ends of holes of electrode when swing the electrode. You should use special tools. Do not crowbar to prize the end of electrode.
When loading and unloading joints containers, handle with care to avoid bump against the joint and result to the damage of thread.
Please do not put the electrode and joint on the ground. It should be put on the pallet or brandreth to avoide the damage of electrode. For the electrode and joints does not use temporarily, do not remove the package. Be careful to avoide the dust and clutter fall down to the thread or the hole of electrode.
Graphite processing Plant method: To speed up the development of new products and industrialization of graphite lay the foundation.
Graphite processing plant: Graphite is a allotrope of elemental carbon, and each carbon atom is connected with three other carbon atoms (in a honeycomb-shaped array of hexagonal) covalently bonded to form covalent molecules. Since each carbon atom emits an electron, the electrons are free to move, so the graphite belongs to the conductive body. Graphite is one of the most soft minerals. The use of graphite processing plants includes the manufacture of pencil cores and lubricants. Graphite processing plant is a good natural flotation, graphite processing plants are basically using flotation method for beneficiation. Because the size of graphite scale is one of the most important quality indexes, the selection method adopts multiple grinding and several other processes to select large scale graphite at the earliest possible time. Flotation commonly used collector for kerosene, diesel, foaming agent for No. Second oil, no. Fourth oil, adjustment agent for lime, sodium carbonate, inhibitors for water glass.
Due to China metallurgical steel industry is continuously growing, world lithium ion battery of is rapidly developing, which pulls on the needs of graphite materials; while industry, and government pay more and more attention on graphite strategy resources, which makes the price of graphite mineral rapidly climbe and reverse over 20 years situation that the price of other mineral is rising while graphite is constantly down. It not only makes graphite industry benefits constantly improve, but also makes some social funds constantly influx graphite industry.
Our country is rich of graphite, graphite industry for a long time within the low technical level of production, price competition, serious shortage of funding and technical inputs to the production of ore and mineral processing of low-end products, makes the industry’s prolonged slump. This situation leads to graphite deep process technologies and products in China lags behind developed countries, deep processing of resources is weak. It is not matched with the Chinese economy and the rapid development of science and technology. Present and for a fairly long period of time, protecting the invaluable strategic and scientific utilization of graphite resource graphite deep process development technology and product is a viable option for a cause.
Now, domestic already has a number of benefits of good (scales) graphite processing enterprises, flexible graphite in the largest enterprises are mainly located in Jiangsu and Zhejiang provinces, anode battery materials are mainly in Shenzhen and the Pearl River Delta and the Yangtze River Delta region. Flake graphite processing enterprises in Shandong have many homes, in Hubei, Henan, Fujian, Inner Mongolia, there are some enterprises.