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U Shape MoSi2 Heating Rod

U-Type Molybdenum Disilicide Rod, Elements, Heater

CVSIC U-Type Molybdenum Disilicide (MoSi2) heating element, up to 1850℃, high-temperature and oxidation-resistant, perfect for ceramics, electronics, lithium batteries, and high-temp furnaces. Offering global wholesale, customization, and OEM/ODM services. Contact us for free samples!

  • Material: Molybdenum Disilicide (MoSi2)
  • Power Supply: 220-480V
  • Grade: 1700/1800/1850
  • Diameter: 3/6, 4/9, 6/12, 9/18, 12/24 mm or custom
  • Density: 5.5-6.2 g/cm³
  • Bending Strength: 15-25 kg/cm³
  • Vickers Hardness: 570 kg/mm²
  • Porosity: 7.4%
  • Water Absorption: 0.2%
  • Thermal Elongation: 4%
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U-Type MoSi2 Heating Rod Description

CVSIC U-Type Molybdenum Disilicide (MoSi2) heating element, shaped like a “U,” is crafted from high-purity MoSi2 via a high-temperature sintering process, with a density of 5.5-6.2 g/cm³ and a maximum operating temperature of 1850℃. Featuring two cold ends (Lu) and a U-shaped hot end (Le), the cold end diameter is twice the hot end’s, joined by welds, with an aluminum-coated cold end for low-resistance contact. Built for suspended installation, it delivers high-temperature and oxidation resistance, making it a reliable heating option for high-temperature applications in ceramics, electronics, lithium batteries, and furnaces.

Technical Parameters

Diameter (d/c, mm)Le(hot zone) LengthLu(cold zone) Lengthc(mm)d(mm)f(mm)g(mm)A(mm) Std/Min
3/6CustomizableCustomizable63251525/16
4/9CustomizableCustomizable94251525/19
6/12CustomizableCustomizable126452550/26
9/18CustomizableCustomizable189753060/38
12/24CustomizableCustomizable24121004080/54

Note: Dimensional tolerance ±5% (except c and d), Lu length 150-1000mm, Le length 150-1500mm, customizable.

MoSi2 Heating Element Resistance versus Time

mosi2 heating element resistance versus time

AtmosphereGrade 1700Grade 1800Grade 1850
NO2, CO2, O2, Air1700℃1800℃1850℃
He, Ar, Ne1650℃1750℃1800℃
SO21600℃1700℃1750℃
CO, N21500℃1600℃1700℃
Wet H21400℃1500℃1650℃
Dry H21350℃1450℃1600℃

Element Temperature (℃)1700 Type Resistivity (Ω·mm²/m)1800 Type Resistivity (Ω·mm²/m)
8001.8461.714
9002.0711.918
10002.2852.142
11002.4992.366
12002.7342.601
13002.9682.836
14003.2233.050
15003.4883.315
16003.7433.570
17004.0293.805
18004.3164.060

Note: Resistivity increases rapidly with temperature but remains stable over time, allowing new and old elements to be used together.

Ordering Information

When ordering U-Type MoSi2 heating elements, please provide the following parameters:

  • Material Grade: 1700/1800/1850
  • d/c: Hot zone/cold zone diameter (mm)
  • Le: Hot zone length (mm)
  • Lu: Cold zone length (mm)
  • A: Shank spacing (mm)
  • Example: U-Type, 1800 grade, d/c=3/6mm, Le=140mm, Lu=125mm, A=25mm, denoted as: 1800/U-Type/3/6x140x125x25
u shape mosi2 heating element drawing

Note: Contact us for other specifications or customization.

U-Type MoSi2 Heating Rod Connection Method

  • Contact Surface Design: The cold end features an aluminum coating, ensuring low-resistance contact for efficient conductivity.
  • Electrical Connection: Secure with flat aluminum braid and spring clips, compatible with 220-480V power; use an SCR voltage regulator (for precise temperature control) for optimal performance.

Note: Ensure connectors fit tightly to the cold end, with connection end voltage <0.01V; select appropriate material grade (1700/1800/1850) based on atmosphere type.

U-Type MoSi2 Heater Application Fields

CVSIC U-Type MoSi2 heating elements are widely used in:

  • High-Temperature Furnaces: Supports ceramic sintering, glass manufacturing, and other high-temperature processes.
  • Electronic Semiconductors: Used for wafer sintering, diffusion furnaces, and encapsulation material heating.
  • Lithium Battery Materials: Facilitates high-temperature processing of battery anode and cathode materials.
  • Rare Earth Phosphors and Precision Casting: Provides high-temperature stability and uniform heating.
  • Laboratory Furnaces: Meets high-temperature experimental and material testing needs.

U-Type MoSi2 Elements Product Advantages

  • Ultra-High Temperature Resistance: Operates up to 1850℃, ideal for extreme environments.
  • High Oxidation Resistance: High-density MoSi2 (5.5-6.2 g/cm³) offers excellent oxidation resistance and long lifespan.
  • Quick and Uniform Heating: 4% thermal elongation ensures even temperature fields and rapid heating.
  • Corrosion Resistance: Low porosity (7.4%) and water absorption (0.2%) make it suitable for various atmospheres (air, inert gases, etc.), enhancing its durability.
  • Flexible Installation: The U-Type design suits suspended installation, with aluminum-coated cold ends that simplify electrical connections.
  • Stable Resistivity: Resistivity remains constant over time, allowing mixed use of new and old elements.
  • Global Service: ISO-certified factory, 360-ton annual capacity, offers free samples, and 7-30 day delivery.

U-Type MoSi2 Heating Rod Installation Method

To ensure the performance and safety of U-Type MoSi2 heating elements, follow these steps:

  1. Inspect Element: Check for cracks or damage before installation.
  2. Installation Position: Place the hot end (Le) downward for suspended setup and insert cold ends (Lu) into the furnace, ensuring the transition zone is not exposed to avoid overheating damage.
  3. Spacing Design: Maintain adequate distance from furnace bottom and walls (≥3 times hot end diameter) to prevent heat buildup.
  4. Fixing Device: Use ceramic or heat-resistant steel clips to secure cold ends, avoiding mechanical stress.
  5. Power Connection: Connect the cold end to power using a flat aluminum braid and spring clips, ensuring a solid connection.
  6. Preheating: Gradually increase power during first use to avoid thermal shock.
  7. Regular Maintenance: Inspect connectors and clips for loosening or corrosion; re-tighten screws after 2-3 hours of operation to address thermal relaxation.

Replacement Steps

  1. Locate damaged element and prepare replacement set.
  2. Disconnect power, remove aluminum braid and connecting screws, and clear refractory material and plugs.
  3. Insert new element from furnace top, reconnect wires, and refill refractory material.
  4. Gradually heat to ensure normal operation.

Note: Installation and replacement should be done by professionals. Contact us for detailed guidance.

U-Type MoSi2 Heating Rod Design Recommendations

To optimize the performance of U-Type MoSi2 heating elements, follow these suggestions:

  • Length Matching: Ensure Lu (150-1000mm) and Le (150-1500mm) match furnace dimensions, avoiding hot end insertion into furnace walls.
  • Shank Spacing Design: Select A value (standard/minimum) based on diameter for stable installation and uniform heat distribution.
  • Atmosphere Selection: Choose 1700/1800/1850 grade based on atmosphere (e.g., O2, N2, H2), referring to the maximum temperature table.
  • Spacing Design: Maintain ≥3 times hot end diameter between element and furnace wall/material, and ≥4 times diameter for center-to-center spacing to optimize heat distribution.
  • Temperature Control System: Use a PID controller for precise temperature control to extend element lifespan.
  • Cold End Protection: Ensure the cold end aluminum coating is intact and connectors are tightly secured to avoid poor contact.

Customization Services

CVSIC offers flexible customization for U-Type MoSi2 heating elements:

  • Size Customization: Adjust hot/cold zone diameter, Lu/Le length, and shank spacing (A).
  • Grade Selection: Provide 1700/1800/1850 grades to suit different atmospheres and temperature needs.
  • Special Coatings: Offer oxidation-resistant coatings for enhanced performance in harsh environments.
  • OEM/ODM Services: Support bulk wholesale, free samples, and 7-30 day delivery.
  • Technical Support: Offer expert guidance and thermal simulation for selection and setup.
    Contact us for customized solutions or free samples!

CVSIC is dedicated to providing top-notch U-Type MoSi2 heating elements to optimize ceramics, electronics, lithium batteries, and high-temperature processes. Contact us for product quotes, customization services, or free samples to boost your heating efficiency!

U Type MoSi2 Elements Accessories

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  • Material: Molybdenum Disilicide (MoSi2)
  • Shape: Straight/I-Type
  • Power Supply: 220-480V
  • Grade: 1700/1800/1900
  • Diameter: 3/6, 4/9, 6/12, 9/18, 12/24 mm or custom
  • Density: 5.5-6.2 g/cm³
  • Bending Strength: 15-25 kg/cm³
  • Vickers Hardness: 570 kg/mm²
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  • Material: Molybdenum Disilicide (MoSi2)
  • Shape: W-Type
  • Power Supply: 220-480V
  • Grade: 1700/1800/1850
  • Diameter: 3/6, 4/9, 6/12, 9/18, 12/24 mm or custom
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L Shape Molybdenum Disilicide Rod

  • Product Specifications
  • Material: Molybdenum Disilicide (MoSi2)
  • Shape: L-Type
  • Power Supply: 220-480V
  • Grade: 1700/1800/1850
  • Diameter: 3/6, 4/9, 6/12, 9/18, 12/24 mm or custom
  • Density: 5.5-6.2 g/cm³
  • Bending Strength: 15-25 kg/cm³
  • Vickers Hardness: 570 kg/mm²
  • Porosity: 7.4%
  • Water Absorption: 0.2%
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