High Purity Graphite
1.Process engineering characteristic of high purity graphite
1) High Purity Graphite is made into low ash raw material by high temperature graphitizing and ash handling treatment.Production standard is according to JBT 2750-2006, carbon content is between 99% and 99.95%.
2)High temperature resistance:Graphite is one of the currently known highest-temperature resistance materials. Its melting point is 3850 ° C ± 50 ° C, boiling point up to 4250 ° C. Under 7000 ° C ultra high temperature electric arc, the loss of graphite is the minimum, only 0.8% of the total weight in 10 seconds,Thus, the high temperature resistance of graphite is very prominent.
3) Specific thermal shock resistance: Graphite has good thermal shock resistance,when the temperature changes suddenly, the crack will not emerge due to the small thermal expansion coefficient
4) Thermal and electric conductivity: Graphite has good thermal conductivity and electrical conductivity. Compared with the general material, its thermal and electrical conductivity is very high. Four times higher than stainless steel, two times higher than carbon steel and 100 times higher than the average non-metallic.
5)Lubricant: The lubricating properties of the graphite is similar to MoS2, the friction coefficient is less than 0.1. Its lubricating properties changes from the size the graphite flake, the bigger the flake is,the smaller the coefficient is ,and the lubricant property will be better.
6)Chemical stability: Graphite has good chemical stability at room temperature. Resistance to acid, alkali, and organic solvents.
2.Discharge electro tube, thyratron, graphite block for mercury-arc rectifier Graphite boat, pot and electric heating element for semiconductor technology
Graphite utensil used for metal gasification, continuous casting, graphite mould for pressure agglomeration and graphite electrode processing.
| Items | Unit | Specification | |
| Grain Size | mm | 0.022-0.45 | |
| Bulk Density | g/cm3 | 1.72-1.85 | |
| Resistivity | μΩ•m | 6-9 | |
| Bending Strength | Mpa | 26-38 | |
| Compressive Strength | Mpa | 48-68 | |
| C.T.E | ×10-6/ ℃ | 3.2-4.5 | |
| Ash | % | 0.01-0.1 | |
| Round | Diameter | mm | 100-600 |
| Length | mm | 200-800 | |
| Square | Length | mm | ≤600 |
| Width | mm | ≤600 | |
| Height | mm | ≤500 | |
| Products can be processed as order requirement or drawings. | |||
We process special graphite product according to customer’s drawing
| Product Name | Industry | Application |
| Crucible,Boat,Dish,etc. | Metallurgy | Melting,refining and analysis |
| Dies,Molds,Ingot Chassis,etc. | EDM graphite electrodes,semiconductor manufacturing,iron,steel and nonferrous metal making,continuous casting,metallurgy pressing machine | |
| Graphite Roller,etc. | Heat treatment of steel plate in furnace | |
| Conduit,Skateboard,etc. | Aluminum molding | |
| Graphite Pipe | Guard pipe for measuring temperature,blowpipe,etc | |
| Graphite Block | Masonry furnace and other heat resistance material | |
| Chemical Equipment | Chemistry | Heat exchanger,reaction tower,distillation columns,absorption equipment,centrifugal pumps,etc |
| Electrolytic Plate | Salt solution and baking molten salt electrolyte | |
| Electrolytic Mercury | NaCI electrolyte | |
| Grounded Anode | Electrical anticorrosion | |
| Motor Brush | Electricity | Commutator,slipping ring |
| Current Collector | Skate,slide,trolley | |
| Contact | Switches,relays | |
| Mercury Ferry And Electronic Pipe | Electronics | Anode,grid pole,repeller pole,ignition pole of the Mercury rectifier and anode,grid electrode |
| Graphite Bearing | Machinery | High temperature resistance sliding bearing |
| Sealing Element | Sealing ring,stuffing box seal,packing seal | |
| Product Element | Braking in plane and vehicle | |
| Nuclear Graphite | Nuclear Power | Deceleration materials,reflective materials,shielding materials,nuclear fuel,support devices,etc |