Industrial Electric Heating Elements | HENGRUI High Temperature

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Industrial Electric Heating Elements | HENGRUI High Temperature

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Advanced Heating Solutions for Industrial Furnaces and Equipment

As industrial heating technology evolves, high-performance electric heating elements have become essential for achieving efficient, stable, and energy-saving high-temperature operations. HENGRUI High Temperature Energy-Saving Materials Co., Ltd. offers a comprehensive range of electric heating components, including silicon carbide rods (SiC rods), molybdenum disilicide heating elements (MoSi₂ rods), and resistance wires such as FeCrAl and NiCr alloys.

These products are widely used in muffle furnaces, box furnaces, tube furnaces, and various industrial kilns for ceramics, metallurgy, glass, and refractory materials.

Silicon Carbide Heating Element (SiC Rod)

The silicon carbide rod is a non-metallic electric heating element made from high-purity silicon carbide (SiC). The raw materials are molded into rods or tubes, sintered and recrystallized at temperatures around 2000°C.

Operating Temperature: 900–1300°C (maximum 1450°C for short periods, 2–3 months lifespan)
Applications: Laboratory furnaces, small box furnaces, and muffle furnaces.
Advantages: Excellent oxidation resistance, fast heating speed, and uniform temperature distribution.

The SiC rod provides a stable and cost-effective heating solution for mid- to high-temperature industrial applications requiring consistent thermal performance.

Molybdenum Disilicide Heating Element (MoSi₂ Rod)

The MoSi₂ heating element is a high-temperature electric heater made from molybdenum disilicide, known for its superior oxidation resistance and thermal endurance. Using advanced hot-bending technology, HENGRUI can manufacture MoSi₂ rods in various shapes and configurations.

Operating Temperature: Up to 1700°C (maximum 1800°C)
Applications: Large industrial furnaces such as ceramic kilns, magnetic material furnaces, glass melting furnaces, metallurgical kilns, and sintering furnaces.
Advantages:
- High melting point and excellent oxidation resistance.
- Capable of maintaining performance under repeated thermal cycles.
- Long service life and minimal energy loss.

The MoSi₂ element is ideal for continuous and batch operations requiring ultra-high temperature stability.

FeCrAl Resistance Wire (Iron-Chromium-Aluminum Alloy)

FeCrAl heating wire is a cost-effective and durable electric heating material suitable for long-term operation. With maximum service temperatures up to 1400°C, it is commonly used in resistance furnaces operating below 1100°C.

Common Grades:

Kanthal APM, Kanthal A-1 (Swedish quality standards)

HRE, 0Cr21Al6Nb (Nb alloyed), 0Cr27Al7Mo2 (Mo alloyed)

Key Features:

High oxidation resistance and electrical resistivity.
Long service life and stable performance.
Economical price and high thermal efficiency.

Limitations: Lower mechanical strength at high temperatures; tends to deform after long operation due to increased ductility.

NiCr Resistance Wire (Nickel-Chromium Alloy)

NiCr resistance wires, such as Cr20Ni80, are premium electric heating materials known for their excellent high-temperature strength, plasticity, and oxidation resistance.

Main Advantages:

Withstands high mechanical stress at elevated temperatures.
Easy to repair and reshape due to good ductility.
High radiation rate and corrosion resistance.
Non-magnetic and stable in structure.

Although NiCr wires are more expensive than FeCrAl (due to the high cost of nickel), they provide superior stability and longevity, making them ideal for precision heating applications.