Graphite Sagger for Ceramic Sintering Furnace
Product Overview
Jincheng graphite saggers for ceramic sintering furnaces are precision-machined graphite containers designed to hold ceramic components during high-temperature sintering processes. These saggers provide excellent thermal uniformity and dimensional stability for consistent ceramic part quality.
Our ceramic sintering saggers are manufactured from high-density, fine-grain graphite that withstands the high temperatures and repeated thermal cycling of ceramic sintering furnaces. Custom shapes and sizes are available to match different furnace designs and ceramic part geometries.
Key Features
- Excellent thermal conductivity for uniform heating of ceramic parts
- High temperature stability up to 1600°C in controlled atmospheres
- Good thermal shock resistance for repeated sintering cycles
- Dimensional stability for consistent part positioning and firing results
- Non-reactive surface to prevent reaction with ceramic materials
- Custom shapes and sizes for various furnace designs and part geometries
- High density graphite for long sagger life and reduced deformation
- Easy to clean and maintain between sintering runs
Technical Specifications
| Parameter | Value |
|---|---|
| Material | High density fine grain graphite |
| Density | 1.75 - 1.85 g/cm3 |
| Shore Hardness | 60 - 75 HS |
| Flexural Strength | 50 - 70 MPa |
| Compressive Strength | 80 - 120 MPa |
| Thermal Conductivity | 100 - 130 W/m·K |
| Max Working Temperature | 1600°C (in inert atmosphere) |
| Wall Thickness | 5 - 20 mm (custom) |
| Size | Custom per furnace and part design |
| Tolerance | ±0.5 mm |
Applications
- Advanced ceramic sintering for alumina, zirconia, and silicon nitride components
- Electronic ceramic firing for MLCC substrates and ceramic packages
- Ceramic core and shell firing for investment casting shells
- Glass ceramic crystallization for glass-ceramic materials
- Ceramic filter manufacturing for porous ceramic membrane supports
- Ceramic R&D and pilot production for new ceramic material development
Why Choose Jincheng Graphite Saggers?
- Sintering-grade graphite optimized for ceramic firing applications
- Precision CNC machining for accurate sagger dimensions and consistent performance
- Custom sagger design based on your furnace specifications and ceramic part geometry
- Competitive pricing as a direct graphite component manufacturer
- Fast delivery - standard saggers within 1 week, custom within 2 weeks
- Technical support for sagger design optimization and sintering process improvement
- Long service life with proper atmosphere control and handling procedures
- Global shipping to ceramic manufacturers and research institutes worldwide
Frequently Asked Questions
Q1: What is the typical service life of graphite saggers?
A: Sagger life depends on sintering temperature, atmosphere, and thermal cycling conditions. Under typical ceramic sintering conditions, graphite saggers last 50-200 cycles before needing replacement.
Q2: Can you manufacture saggers with specific shapes for my parts?
A: Yes, we manufacture custom saggers based on your part drawings and furnace specifications. Please provide your part geometry and furnace dimensions for quotation.
Q3: Do graphite saggers work in oxidizing atmospheres?
A: Graphite saggers are best suited for inert, reducing, or vacuum atmospheres. In oxidizing atmospheres at high temperatures, graphite will oxidize and degrade quickly.
Q4: How do I clean and maintain graphite saggers?
A: Saggers can be cleaned by light sandblasting or grinding to remove ceramic residues. Regular inspection for cracks and deformation is recommended between sintering runs.
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