Product Overview
High-purity graphite crucibles designed specifically for salt bath furnaces and quenching applications. With excellent resistance to molten salt corrosion and thermal shock resistance, our graphite crucibles provide reliable performance in heat treatment processes including hardening, tempering, and brazing in molten salt baths.
Key Features
- Excellent resistance to molten salt corrosion
- Superior thermal shock resistance for repeated heating/cooling cycles
- High temperature stability up to 1200°C+
- Good thermal conductivity for uniform salt temperature
- Thick wall design for extended service life
- Custom sizes and shapes available
- Suitable for various salt bath compositions
Technical Specifications
| Parameter | Unit | Value |
|---|---|---|
| Material | - | Fine-Grain Isostatic Graphite |
| Bulk Density | g/cm³ | 1.78 - 1.85 |
| Shore Hardness | - | 65 - 75 |
| Flexural Strength | MPa | 40 - 50 |
| Compressive Strength | MPa | 70 - 85 |
| Max Working Temp | °C | 1200 |
| Capacity Range | L | 5 - 500 |
| Wall Thickness | mm | 10 - 30 |
Applications
- Salt bath hardening and quenching
- Salt bath tempering and annealing
- Brazing and soldering in salt baths
- Heat treatment of tool steels
- Precision parts heat treatment
- Wire and spring patenting
- Metal melting and holding applications
Why Choose Jincheng Salt Bath Crucibles?
We manufacture graphite crucibles for salt bath furnaces and heat treatment shops worldwide. Our crucibles are engineered to withstand the corrosive environment of molten salts and repeated thermal cycling, providing longer service life and more consistent heat treatment results. We offer a range of standard sizes as well as fully custom crucibles for your specific furnace dimensions.
FAQ
Q: How long do graphite crucibles last in salt bath service?
A: Service life depends on salt composition, operating temperature, and workload. Typically, graphite salt bath crucibles last 6-12 months with proper operation. Regular inspection of wall thickness and controlled operating temperatures will maximize crucible life.
Q: What salt bath compositions are compatible with graphite?
A: Graphite is compatible with most neutral and oxidizing salt baths including chloride salts and nitrate salts. It is not recommended for fluoride-based salts or strongly oxidizing salt mixtures at high temperatures. Please consult us for specific salt composition compatibility.
Q: Can you manufacture crucibles with spouts and lifting lugs?
A: Yes, we can machine custom features including pouring spouts, lifting lugs, handles, and support rings. Please provide your furnace dimensions and any special requirements, and we will design a crucible that fits your equipment perfectly.
Hot Tags: salt bath crucible, graphite crucible, quenching crucible, heat treatment crucible, salt bath furnace, hardening crucible, molten salt crucible, tempering, crucible chemistry lab, crucible in chemistry lab, crucible made of graphite, graphite lined crucible, melting graphite crucible, preparing a graphite crucible
