Core Value

The 1300°C U &W Shape SiC Silicon Carbide Heating Elements are high-efficiency, non-metallic ceramic heating elements engineered for high-temperature industrial electric furnaces, ceramic kilns, glass lehrs, and powder metallurgy sintering equipment. Manufactured from high-purity, high-density recrystallized Green Silicon Carbide (a-SiC) grains through high-temperature reaction sintering, these elements spontaneously generate a protective silicon dioxide (SiO2) surface glaze when operating above 900°C. This self-healing glass layer shields the interior SiC ceramic matrix from atmospheric oxidation and chemical corrosion during continuous operation up to 1300°C (2372°F).

Specifically designed in U-Shape (2-shank) and W-Shape (4-shank) geometries, these elements allow all electrical terminal connections to exit from a single side or roof penetration of the furnace wall. This single-ended wiring configuration simplifies terminal lead routing, reduces heat losses through multiple wall penetrations, and maximizes available space inside the heating chamber. Featuring low-resistance cold terminal ends welded to high-purity hot shanks, U and W shape SiC elements deliver high surface loading (watt density), rapid thermal response, and highly uniform radiant heating. BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE and UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS for guaranteed electrical resistance consistency and zero-defect furnace reliability.

✓ 1300°C Continuous Thermal Stability: Performs reliably up to 1300°C (2372°F) in air and neutral gas atmospheres without structural sagging or thermal fatigue.

✓ Single-Ended Terminal Wiring: U and W shape designs consolidate electrical connections to one furnace wall or roof port, reducing terminal heat losses and wiring complexity.

✓ Self-Healing Anti-Oxidation Layer: Protective SiO2 glass film regenerates automatically at high temperatures, retarding internal oxidation and extending service life.

✓ High Watt Density & Fast Ramp-Up: Accommodates high surface watt densities (up to 15 W/cm²), enabling rapid heating cycles and higher furnace throughput.

✓ Low-Resistance Cold Terminals: Thick cold-end joints keep terminal connection clamps at safe operating temperatures, preventing terminal burnouts.

✓ High Mechanical Rigidity: Recrystallized dense SiC ceramic matrix prevents bowing or sagging during horizontal or vertical installation.

✓ Reliable Quality: 30+ YEARS MANUFACTURING EXPERIENCE guarantees precise ceramic sintering, uniform shank resistance matching, and tight geometric tolerances.

✓ Quality Assured: UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS including hot/cold resistance calibration, density checks, and dimensional verification.

✓ Global Compliance: CE, RoHS, ISO 9001, and ISO 14001 certified.

Technical Specifications & Performance Data

Industrial Applications & Solutions

• Ceramic & Refractory Kilns: Top and sidewall heating elements for firing porcelain, sanitaryware, technical ceramics, and refractories in shuttle and roller kilns.

• Glass Industry Annealing & Tempering: Top-suspended U and W shape heating units for glass container lehrs, tableware tempering ovens, and glass bending units.

• Powder Metallurgy & Hard Metal Sintering: Heating elements for sintering tungsten carbide, structural steel components, and magnetic ferrite cores.

• Heat Treatment Furnaces: Forging, annealing, and stress-relieving batch and continuous furnaces operating in air or controlled neutral atmospheres.

• Laboratory & R&D Muffle Furnaces: High-efficiency top-mounted elements for benchtop box and tube muffle furnaces requiring single-sided wiring access.

HT-Heater vs Standard Market SiC Elements

Installation & Operating Guidelines

• Resistance Batch Matching: When installing multiple U or W shape elements in a single control zone, use elements from the same resistance calibration group ($\pm 5\%$) to ensure balanced current distribution and uniform heating.

• Fragility Precaution: SiC elements are hard but brittle ceramics at room temperature. Handle with care during unpacking, measurement, and mounting to prevent mechanical fracture.

• Flexible Aluminum Connection Straps: Always connect cold-end terminals to power busbars using flexible aluminum braided connection straps. Never clamp rigid solid copper wires directly to terminals, as thermal expansion will crack the ceramic cold legs.

• Thermal Expansion Clearance: Provide adequate clearance in furnace roof/wall passage slots (cut holes 5–10 mm larger than the element OD) to allow free expansion and contraction during thermal cycling.

• Managing Resistance Aging: Over hundreds of operating hours, SiC elements experience slow electrical resistance increase (aging). Utilize a multi-tap transformer or SCR power regulator to gradually adjust voltage and maintain constant wattage output over time.

Customer Success Stories

Case 1:

Glass Lehr Manufacturer (Italy)

• Application: Glass container annealing lehr roof heating units operating at 1150°C.

• Challenge: Dual-ended straight rods required wiring access on both sides of the lehr, making insulation sealing and maintenance extremely difficult.

• Solution: HT-Heater U-Shape SiC Heating Elements (Ø 20/300/400 mm) with single-ended roof termination.

• Results: WIRING INSTALLATION TIME CUT BY 50%. “Switching to HT-Heater’s U-shape SiC elements simplified our roof wiring layout dramatically. HT-Heater UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS, and element lifetime in continuous glass annealing is outstanding.”

Case 2:

echnical Ceramics Sintering Plant (Taiwan)

• Application: Shuttle kiln firing alumina ceramics continuously at 1280°C.

• Challenge: Frequent bridge breakage on standard market W-shape elements during rapid thermal cycling.

• Solution: W-Shape SiC Heating Elements with reinforced ceramic bridge welds.

• Results: ELEMENT BREAKAGE DROPPED TO ZERO. “30+ YEARS MANUFACTURING EXPERIENCE is visible in their bridge welding quality. Thermal fatigue resistance at 1280°C is top-tier.”

Pricing & Procurement Options

• • Standard Production: MOQ 5 pieces. BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE ensuring exact resistance matching and dimensional repeatability across production lots. Tiered volume discounts available for 50+ unit orders.

  • Lead Times: Standard Catalog Dimensions (U-Shape OD 14–30 mm): In stock, 3-5 days. Custom W-Shape, Special Shank Spacing, or Heavy Diameters (OD 35–54 mm): 7-10 days. Express air freight with protective wooden crating.

  • Global Logistics: Encased in individual shock-absorbing foam slots inside reinforced wooden export crates to ensure zero transit breakage.

  • Sample Orders: Custom sample elements produced upon CAD drawing and electrical specification approval. Every shipment UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS prior to dispatch.

Global Certifications & Compliance

• CE Marking
  Fully compliant with European safety and environmental standards.
• LVD Compliance
  Low Voltage Directive tested for continuous thermal load safety.
• RoHS Compliant
  Constructed using environmentally safe, lead-controlled brass alloys.
• ISO 9001
  Certified quality control covering CNC machining, coil pressing, and electrical testing.

Quality Documentation: Certificate of Conformity (COC) and insulation resistance test reports included.

Comprehensive After-Sales Support

• • Warranty: 1-Year Comprehensive Warranty covering internal heating element and built-in sensor.

  • Technical Support: Application engineers available for wattage distribution calculation, thermocouple calibration, and nozzle fitting assistance.

  • Global Response Network: BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE with technical inquiry feedback within 2 hours.

Ready to Optimize Your Injection Molding?

Next Steps:

• 📧 Request Custom Quote – Send your nozzle dimensions, wattage, voltage, and HT-CLW-450 drawing requirements.
• 🔧 Free Design Consultation – Work with our thermal engineers to optimize heat distribution and lead insulation.
• 📦 Order Test Samples – Evaluate thermal performance on your injection molding machine.
• 📞 Contact Hot Runner Experts – Response within 2 hours

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