Graphite Heating Element for Industrial Furnace
Product Overview
Jincheng graphite heating elements are precision-manufactured high-purity graphite components designed for use in vacuum furnaces, atmosphere furnaces, and high-temperature sintering systems. With exceptional electrical conductivity and uniform heat distribution, these heating elements deliver reliable performance at temperatures up to 3000°C in inert or reducing atmospheres.
Our graphite heating elements are produced from high-density isostatic graphite with low ash content, ensuring long service life and minimal contamination. Customized shapes including rods, tubes, plates, and U-shaped elements are available to match your specific furnace design and thermal requirements.
Key Features
- High purity graphite with ash content below 500ppm for contamination-free heating
- Excellent electrical conductivity for efficient energy transfer and uniform heating
- High temperature resistance up to 3000°C in vacuum or inert atmosphere
- High mechanical strength at elevated temperatures for structural stability
- Excellent thermal shock resistance to withstand rapid temperature cycling
- Machinable to precision dimensions with tight tolerances for perfect fit
- Low thermal expansion coefficient minimizes deformation during operation
- Available in various grades including isostatic, molded, and extruded graphite
Technical Specifications
| Parameter | Value |
|---|---|
| Material | High purity isostatic graphite |
| Density | 1.70 - 1.85 g/cm3 |
| Shore Hardness | 55 - 75 HS |
| Compressive Strength | 40 - 65 MPa |
| Flexural Strength | 25 - 45 MPa |
| Electrical Resistivity | 10 - 15 uOhm*m |
| Thermal Conductivity | 100 - 140 W/(m*K) |
| Ash Content | < 500 ppm |
| Max Working Temperature | 3000°C (vacuum/inert) |
| Available Shapes | Rod, Tube, Plate, U-shaped, Custom |
| Diameter Range | 3 - 200 mm |
| Length Range | Up to 2000 mm |
Applications
- Vacuum sintering furnaces for ceramic, powder metallurgy, and cemented carbide
- Atmosphere-controlled furnaces for semiconductor and electronic materials processing
- Graphite purification furnaces for high-purity material production
- Czochralski crystal growth furnaces for silicon and sapphire crystal pulling
- Diamond synthesis presses for HPHT high-pressure high-temperature processes
- Heat treatment furnaces for annealing, brazing, and quenching applications
Why Choose Jincheng Graphite Heating Elements?
- 15+ years of graphite manufacturing experience serving global industrial clients
- In-house precision machining with CNC centers for tight tolerance production
- Multiple graphite grades available to match different furnace budgets and requirements
- Custom design service - we can produce heating elements to your furnace drawings
- Strict quality control with dimensional inspection and material certification
- Fast delivery - standard models in stock, custom orders within 2-3 weeks
- Competitive factory direct pricing with no middleman markup
- Global shipping to over 30 countries including USA, Germany, Japan, and India
Frequently Asked Questions
Q1: What is the typical service life of a graphite heating element?
A: Under normal operating conditions in a clean vacuum or inert atmosphere furnace, graphite heating elements typically last 2-5 years depending on temperature, atmosphere, and thermal cycling frequency.
Q2: Can you manufacture custom-shaped heating elements based on our drawings?
A: Yes, we specialize in custom graphite machining. Please send us your drawings or specifications and we will provide a quotation within 24 hours.
Q3: What is the minimum order quantity?
A: There is no strict MOQ. We accept sample orders for testing, and larger orders receive better pricing.
Q4: Do you provide material certification?
A: Yes, we provide material test reports including density, hardness, resistivity, and ash content for every batch.
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