Monocrystalline Silicon Graphite Thermal Field High Thermal Conductivity and Good Electrical

Model NO.
according to the drawings
Ash
800ppm
Flexual Strength
60
Compressive Strength
10-14
Density
1.78/1.85
Trademark
BC
Transport Package
Export Packing
Specification
Any sizes
Origin
China
HS Code
3801909000
Our firm since its inception, normally regards item top quality as company life, constantly make improvements to generation technology, improve product excellent and repeatedly strengthen organization total good quality management, in strict accordance with the national standard ISO 9001:2000 for Monocrystalline Silicon Graphite Thermal Field High Thermal Conductivity and Good Electrical, The product will supply to all over the world, such as: Netherlands, Sydney, Rwanda, We take measure at any expense to achieve essentially the most up-to-date equipment and approaches. The packing of nominated brand is our a further distinguishing feature. The products to assure years of trouble-free service has attracted a great deal customers. The solutions are obtainable in improved designs and richer assortment, they're created scientifically of purely raw supplies. It readily available in a variety of designs and specifications for your selection. The most recent kinds are a great deal better than the preceding one particular and they are quite popular with lots of prospects.
PingDingShan Baocheng Carbon Co., Ltd. Diamond / Audited Supplier

Monocrystalline silicon graphite thermal field
I. introduction
The CZ Thermal Field is also called hot zone. It is a whole system to melt silicon materials and keep the single crystal growth under a certain temperature.
Monocrystalline silicon graphite thermal field includes parts: thermal insulation barrel, heater, three-segment crucible, crucible tray, draft tube, graphite electrode, electrode nut, graphite pad for cutting silicon rods, heat shield, graphite boat, etc..We adopt the cold isostatic pressing production technical to the product, so it has many advantages.
II. features
1. Good electrical and thermal conductivity
2. High temperature resistance
3. Resistance to oxidation
4. Corrosion resistance
5. Thermal shock resistance
6. Easy precision machined
III. structures
Parts of Graphite Hot Zone
Include thermal insulation barrel, heater, three-segment crucible, crucible tray, draft tube, graphite electrode, electrode nut, graphite pad for cutting silicon rods, heat shield, graphite boat, etc.
Graphite three-segment crucible
The three-segment graphite crucible has high density, good thermal conductivity and high temperature resistance. In the process of high temperature use, the coefficient of thermal expansion is small, and it has certain strain resistance to rapid heating and cooling. It has strong corrosion resistance to acid and alkaline solution and excellent chemical stability.
Graphite draft tube
The significance of the outer draft tube inside the graphite heat field is to increase the flow rate of the fluid, and the purpose of increasing the flow rate of the fluid is mainly to enhance the heat effect. The single crystal graphite heat preservation cylinder sequentially comprises an upper cylinder, a middle cylinder and a lower cylinder from top to bottom.
Graphite heater
The graphite heater has become the current thermal field structure of the single crystal furnace. The final reason for the indispensable accessories depends on the good characteristics of the graphite heater:
Crucible tray
The graphite tray is located on the support under the graphite crucible in the single crystal furnace. In the thermal field of the single crystal furnace, the installation requirement of the graphite tray is firmly combined with the lower shaft and has good neutrality.
Graphite supporting rod
The graphite supporting rod and the tray are required to be firmly combined with the lower shaft and have good neutrality. The height design of the supporting rod and tray needs to fully consider the material melting pot position and sufficient pot lift stroke.
Graphite bolt
Good conductivity, good processing performance, small expansion coefficient, strong shearing force, light weight, corrosion resistance.
IV,application
In the production of crystal silicon, the graphite heat field of single crystal furnace is mainly composed of heat preservation cylinder, guide tube, heater, graphite crucible and quartz crucible. Quartz crucible is located in graphite crucible, graphite crucible is located in heater, heat preservation cylinder is located in the outermost layer, and guide tube is located above and inside quartz crucible. When the heater is electrified, the graphite crucible begins to heat up. When the temperature rises to 1400-1600 degrees, the silicon in the quartz crucible melts sufficiently, and then the inert gas is introduced into it. Under the protection of the inert gas, the crystal growth is oversized through the steps of crystallization and shoulder setting.