U-Shaped MoSi₂ Heating Element for High-Temperature Furnaces

Introduction

ZYLAB U-shaped MoSi₂ (Molybdenum Disilicide) heating elements are the ideal choice for demanding high-temperature applications. Operating up to 1800°C (3272°F), these elements are trusted worldwide for their superior performance in various atmospheres, including oxidizing, inert, nitriding, carburizing, and reducing environments.

Engineered with stability and longevity in mind, ZYLAB MoSi₂ elements exhibit:

• Stable electrical resistance even after long-term use

• Compatibility between old and new elements in series

• Fast thermal cycling with no performance degradation

• Self-healing SiO₂ protective layer in oxidizing atmospheres

• Custom dimensions for optimized fit and efficiency

Available Models & Customization

• Model: U-shaped MoSi₂ Heating Element

• Grades: 1700 / 1800

• Standard Diameters: 3/6, 4/9, 5/10, 6/12, 7/14, 9/18, 10/18, 12/24 mm

• Voltage: 220V–380V (customizable)

• Custom Specs Example: φc/φd = 6/12 mm, Le = 350 mm, Lu = 300 mm, a = 60 mm, Grade = 1700

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ZYLAB also offers a full range of accessories for MoSi₂ heating elements to ensure safe and efficient installation.

1. Glass Industry

Used in primary glass manufacturing processes, including:

• Glass forehearth (feeder systems)

• Glass melting and fusing

• Fiberglass and specialty glass production

• Down-draw and overflow forming processes

2. Ceramics Industry

Ideal for the production of both traditional and advanced ceramics:

• Ceramic sintering

• High-temperature ceramic firing

• Post-processing of functional ceramics

• Sintering of 3D printed ceramic components

3. Metallurgical & Heat Treatment Industry

Suited for a wide range of heat treatment processes involving steel, aluminum, and alloy materials:

• Annealing furnaces

• Carburizing and hardening furnaces

• Galvanizing and tempering processes

• Metal sintering and debinding

4. Electronics Industry

Applied in precision heating systems required in electronics manufacturing:

• Single-crystal silicon (Si) and GaAs growth furnaces

• Diffusion furnaces and wafer processing

• MLCC (Multi-Layer Ceramic Capacitor) sintering

• ITO (Indium Tin Oxide) sintering

5. Other Advanced Applications

• Laboratory and research furnaces

• High-temperature additive manufacturing

• Powder metallurgy

• Refractory material processing

• Custom thermal processing systems requiring stable, clean high heat

Features & Benefits

• Maximum temperature: Up to 1800°C

• Excellent high-temperature oxidation resistance

• Quick thermal response for fast heating cycles

• Minimal resistance change—mixing old and new elements is possible

• Long service life with low maintenance frequency

• Energy efficiency and improved product quality

MoSi₂ Heating Element Installation Guidelines

Because MoSi₂ elements are brittle at room temperature and ductile at high temperature, careful handling is required:

General Recommendations

• Always use vertical mounting for U-type elements. If horizontal mounting is needed, use high-temperature insulating supports.

• The cone ends must extend into the furnace chamber.

• Do not overtighten the power connectors initially. Tighten again when heated to avoid breakage.

• Use matching ceramic spacers to separate the shanks.

Installation Steps

• Remove the wooden block from between the shanks.

• Insert the element through the ceramic spacer into the mounting hole.

• Push the element in until it touches the wooden block inside the furnace.

• Fill any gaps with alumina fiber.

• Install the ceramic fixture, aligning all screws in one direction.

• Once all elements are in place, install the power tracks, ensuring they do not contact the fixture to prevent short circuits.

Note: MoSi₂ rods are fragile and should be handled with caution at all times.

Why Choose ZYLAB?

• Expert in high-temperature furnaces and components

• Global supplier to research and industrial users

• Full customization service with fast lead times

• Reliable technical support and after-sales service