- Graphites
- Isostatic Graphite
- Molded Graphite
- Extruded Graphite
- Vibration Graphite
- Mechanical Carbon Graphite
- Graphite Box for Anode Material
- CNC Machining Graphite Parts
- CNC Machining Graphite Parts
- Graphite Electrode
- Graphite Bipolar Plate
- Carbon Brush/Electric Brush
- High-Purity Graphite Powder for Lithium-Ion Battery Applications
- Graphite Hot Zone for PV
- Calcined Petroleum Coke
- Graphite Products for Glass Industry
- Graphite Crucible
- Graphite Pipe
- Graphite Rod/Block/Plate
- Expanded Graphite Powder – High Conductivity Grade BZ-20
- C-C Composites
- 2D
- 2D Carbon-Carbon Composite Sheets and Plates
- 2.5D Carbon-Carbon Composite Materials
- 3D Carbon-Carbon Composite Materials
- 4D / 5D Carbon-Carbon Composite Materials
- High-Density Carbon-Carbon Composite Materials
- Carbon-Carbon Composite Aircraft Brake Discs
- Carbon-Carbon Composite Heaters & Heating Elements
- Carbon-Carbon Composite Insulation Barrels & Blankets
- Carbon-Carbon Composite Moulds
- Carbon-Carbon Composite Screws & Studs
- Carbon Carbon Composite Crucible
- Carbon Carbon Composite U & L Profiles
- Carbon Carbon Composite Blocks
- Carbon Carbon Composite Racing Brake Discs and Pads
- Carbon Carbon Composite Rods, Tubes, and Pipes
- Carbon Composite Bolts and Nuts
- Carbon Ceramic Composite Materials and Precision Parts
- Pyrolytic Graphite
- Carbon Felt / Graphite Felt
Graphite Hot Zone for PV
BZNCarbon produce and supply precision-machined graphite components specifically designed for hot zone use in PV applications. With multiple CNC machining centers and three-coordinate measuring systems, we guarantee high dimensional accuracy. Additionally, our advanced purification furnaces enable ash reduction to levels below 2 PPM when needed.
Description
Material Specifications
| Grade | Bulk Density (g/cm³) | Specific Resistance (μΩ·m) | Flexural Strength (MPa) | Compressive Strength (MPa) | Ash (Normal) % | Ash (Purified) (ppm) | Grain Size (μm) |
|---|---|---|---|---|---|---|---|
| BZ-11 | 1.83 | 11–13 | 50 | 115 | 0.05 | 50 | 8–10 |
| BZ-12 | 1.90 | 11–13 | 61 | 135 | 0.05 | 50 | 8–10 |
| BZ-13 | 1.78 | ≤13 | 46 | 86 | 0.05 | 50 | – |
| BZ-14 | 1.86 | 11–12 | 65 | 135 | 0.05 | 50 | 5 |
| BZ-22 | 1.80 | 13–14 | 55 | 100 | 0.02 | – | 8 |
| BZ-23 | 1.86 | 9–12 | 55 | 110 | 0.05 | – | 13 |
| BZ-31 | 1.79 | 11–13 | 38 | 78 | 0.05 | – | – |
| BZ-32 | 1.85 | 11–13 | 45 | 100 | 0.05 | – | – |
Product Overview
With the growth of the photovoltaic industry, the demand for high-quality materials has rapidly increased. Polysilicon ingot production, an essential process in solar wafer manufacturing, heavily relies on high-purity graphite materials.
Why Graphite?
Graphite is used throughout the PV manufacturing chain — from quartz smelting to polysilicon production and monocrystalline growth — due to its:
Excellent high-temperature resistance
Outstanding thermal stability
High density and compressive strength
Superior corrosion resistance and electrical conductivity
We achieve ultra-high purity levels (ash content < 2 PPM) through our proprietary purification techniques, making our products ideal for cleanroom-level PV processes.
Typical Applications
Graphite electrodes
Graphite heaters
Graphite crucibles
Heat insulation shielding plates
Heat reflection plates
Structural graphite components in hot zones
Production Process
Raw Material Crushing
Screening
Mixing & Kneading
Cold Isostatic Pressing (CIP)
Baking
Impregnation
Re-Baking
Graphitization
CNC Machining
Purification
Inspection
Packaging
Packaging & Shipping
We use vacuum packaging for high-purity graphite parts. Based on customer preferences, we provide customized packaging including wooden boxes and pallet solutions for safe international delivery.
