Description
Technical Parameters
1. Product Description
Our integral L-type MoSi₂ heating rod features seamless 90° bending without welding. It reaches up to 1800℃, builds self-repair SiO₂ film, resists oxidation steadily. Space-saving for furnace corners, low aging, shock-resistant and fits compact high-temperature kilns perfectly.
2. Product Parameters
- Material: High-purity Molybdenum Disilicide (MoSi₂)
- Product Grade: 1700 Type / 1800 Type
- Max Continuous Working Temp: 1700℃ (1700 Type); 1850℃ (1800 Type)
- Rod Diameter: Φ6mm/Φ8mm/Φ9mm/Φ12mm/Φ14mm (standard stock)
- Structure: 90° integrated L bend, straight cold end + bent heating end
- Standard Service Life: 2500h-8000h (oxidizing working condition)
- Resistance Feature: Stable resistance value, no obvious aging drift
- Applicable Atmosphere: Air, oxygen, nitrogen, argon, weak inert atmosphere
- Standard Voltage: 220V/380V customized matched
3. Product Detail Drawings
4. Product Advantages
- Exclusive L-shaped Structural Advantage: Integral hot bending molding without welding seam, high structural strength; fits furnace corner, side wall and narrow cavity installation, saves furnace inner space, optimizes overall temperature field distribution.
- Self-repairing Oxidation Resistance: Form dense SiO₂ protective film automatically at high temperature, isolate air corrosion; realize self-healing for tiny surface cracks, effectively avoid element burnout.
- Stable Resistance & Low Aging Rate: Resistance keeps stable in whole service cycle, no rapid resistance surge; new & old L-type MoSi₂ rods can be mixed for series/parallel connection freely.
- Super Thermal Shock Resistance: Support fast heating and fast cooling, no crack or fracture under frequent start-stop operation; low high-temperature creep deformation.
- Strong Chemical Corrosion Resistance: Resist weak acid, alkali flue gas and metal vapor erosion, adapt complex high-temperature firing working conditions.
- Energy-saving & Easy Maintenance: Fast heating speed, high thermal conversion efficiency; easy mounting and replacement, low later operation and maintenance cost.
- Low-temp No Brittle Failure: Better low-temperature toughness compared with common silicon carbide rods, no easy breakage during transportation and installation.
5. Product Application
L-type MoSi₂ heating rods are widely applied in ultra-high temperature manufacturing and scientific research industries globally, covering below core fields:
- Advanced Ceramics Industry: Zirconia ceramic, alumina ceramic, dental ceramic and piezoelectric ceramic sintering furnace
- New Energy Materials: Lithium battery cathode material, magnetic material, rare earth powder high-temperature sintering kiln
- Glass & Optical Industry: Optical glass melting, glass fiber tempering, precision glass annealing furnace
- Metallurgy & Heat Treatment: Alloy steel annealing, powder metallurgy, refractory material high-temperature treatment furnace
- Laboratory & Scientific Research: High-temperature muffle furnace, tube furnace, atmosphere experimental electric furnace for university and research institute
- Electronic Semiconductor: Electronic substrate sintering, ceramic chip high-temperature oxidation production line
6. Customized Service
We provide one-stop OEM & ODM customized service for global clients, meet personalized non-standard demands:
- Custom L-angle: 75°/90°/105° non-standard bending angle customization
- Custom size: Custom heating section length, cold end length, rod diameter as furnace drawing
- Custom atmosphere grade: Anti-carburization, anti-sulfur modified customized L-type rods for harsh flue gas
- Custom resistance matching: Precise resistance grouping for whole furnace batch collocation
- Custom terminal: Aluminum spraying terminal, reinforced conductive terminal optional
- Drawing-based production: Support client 2D/3D drawing non-standard rapid trial production
7. Global Export Service
Our L-type molybdenum disilicide rods have passed international industrial quality inspection standards, exported to Europe, Southeast Asia, North America, Middle East, South Korea, Japan and Australia steadily. We support EXW, FOB, CIF, DDP international trade terms; adopt export fumigation-free wooden box anti-collision packaging, support bulk container shipment and sample express delivery. We offer English product test report, CE factory certificate, customs clearance document and overseas after-sales technical guidance, build long-term stable cooperative supply chain for global furnace manufacturers and industrial end customers.
8. Product Accessories
9. FAQs
Q1: What is the difference between L-type MoSi₂ rod and straight silicon molybdenum rod?
A1: L-type adopts integrated 90° bent structure, specially designed for furnace side wall, corner and narrow installation space; no extra occupying inner furnace space, optimize internal temperature uniformity. Straight rod is for top and horizontal overall installation. L-type model is more adaptable for small-size customized high-temperature furnaces.
Q2: Can L-type 1700-grade and 1800-grade rods be used mixedly?
A2: Not recommended. 1700-type is for max 1700℃ continuous working; 1800-type ultra-high temperature model owns better high-temperature creep resistance. Mixed use will cause unbalanced load, local overheating and shorten whole furnace service life.
Q3: Why L-type silicon molybdenum rod has no fast aging problem?
A3: Qualified L-type MoSi₂ rod forms dense silicon dioxide protective film automatically above 1000℃, stop internal matrix oxidation. Different from SiC rod, its resistance will not surge sharply, with ultra-low natural aging rate under standard oxidizing atmosphere.
Q4: Can L-type MoSi₂ rod work under vacuum or reducing atmosphere?
A4: Standard model is suitable for oxidizing & weak inert atmosphere. Long-term vacuum, hydrogen and carbon monoxide reducing atmosphere will destroy protective film. We provide professional atmosphere-modified L-type rods for vacuum/reducing working conditions.
Q5: Is it allowed to mix new and old L-type heating rods for connection?
A5: Yes. Different from silicon carbide rods, MoSi₂ heating elements own stable resistance value in service cycle. New and used L-type rods can be connected in series or parallel without overload burnout risk.
Q6: What causes L-type rod bending part crack and damage?
A6 : Main 3 reasons: 1.Excessive external extrusion during installation; 2.Super fast cooling operation beyond process standard; 3.Unqualified hot-bending craft of low-quality products. Our integral one-piece bending craft solves bending fracture risk completely.
Q7: How to prolong service life of L-type molybdenum disilicide rod?
A7: 1.Avoid long-term constant temperature at 400-700℃ medium temperature zone; 2.Control heating & cooling rate uniformly; 3.Match matched voltage regulator cabinet; 4.Adopt anti-corrosion customized model for flue gas & metal vapor working conditions; 5.Avoid terminal over-tight extrusion during installation.
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