Graphite Boat for Solar Cell Sintering Furnace
Product Overview
Jincheng graphite boats for solar cell sintering are precision-formed graphite carriers designed to hold silicon wafers during the firing of front and back side contacts in photovoltaic cell manufacturing. These boats ensure uniform heating and precise alignment of wafers through the sintering furnace.
Our solar cell sintering boats are manufactured from high-purity, fine-grain graphite that provides excellent thermal conductivity and low contamination for consistent solar cell performance. Custom slot designs and wafer spacing are available to match different furnace models and wafer sizes.
Key Features
- High purity graphite with low ash content for wafer protection
- Excellent thermal conductivity for uniform heating during sintering
- Precision slot design for accurate wafer alignment and spacing
- High temperature resistance up to 1100°C peak sintering temperatures
- Dimensional stability under repeated thermal cycling
- Smooth surface finish to minimize wafer damage and particle generation
- Custom sizes available for 156mm, 166mm, 182mm, and 210mm wafers
- Long service life with proper atmosphere and handling procedures
Technical Specifications
| Parameter | Value |
|---|---|
| Material | High purity fine grain graphite |
| Density | 1.75 - 1.85 g/cm3 |
| Ash Content | < 200 ppm (ultra-high purity available) |
| Shore Hardness | 60 - 75 HS |
| Flexural Strength | 50 - 70 MPa |
| Thermal Conductivity | 100 - 130 W/m·K |
| Max Working Temperature | 1200°C |
| Wafer Size Compatibility | 156mm, 166mm, 182mm, 210mm |
| Wafer Capacity | Custom per boat design |
| Slot Tolerance | ±0.05 mm |
Applications
- Crystalline silicon solar cell manufacturing for front and back contact firing
- Heterojunction (HJT) solar cell production for low-temperature sintering processes
- PERC and TOPCon cell manufacturing for high-efficiency solar cells
- Thin film solar module production for thin film deposition processes
- Solar cell research and development for new cell technology development
- Photovoltaic pilot lines for small-batch production and process validation
Why Choose Jincheng Graphite Boats?
- Solar-grade high purity graphite to prevent wafer contamination and power loss
- Precision CNC machining with accurate slot spacing for consistent wafer placement
- Experience with major furnace brands including Despatch, Centrotherm, and ICP
- Custom boat designs optimized for your specific furnace and wafer size
- Competitive pricing as a direct graphite component manufacturer
- Fast delivery - standard boats within 1 week, custom within 2 weeks
- Technical support for boat design optimization and process improvement
- Global shipping to solar cell manufacturers and research institutes worldwide
Frequently Asked Questions
Q1: What wafer sizes do your boats support?
A: We manufacture boats for all common wafer sizes including 156mm M2, 166mm M6, 182mm M10, and 210mm M12. Custom sizes are also available.
Q2: How long do solar sintering boats last?
A: Boat life depends on furnace conditions and atmosphere. Under typical air sintering conditions, boats last 3-6 months before needing replacement.
Q3: Can you manufacture boats for my specific furnace model?
A: Yes, we manufacture boats based on your furnace specifications. Please provide your furnace model or existing boat dimensions for quotation.
Q4: Do you offer ultra-high purity graphite options?
A: Yes, we offer ultra-high purity graphite grades with ash content below 50 ppm for the most demanding solar cell applications.
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