Working hours:（GMT+8） Mon - Fri 9.00 - 18.00
WhatsApp: +86 19139980296
   
Home
Products
U-Type Silicon Carbide Heating Element
U-Silicon Carbide Heating Element
U-Silicon Carbide Heating Element

U-Type Silicon Carbide Heating Element

Note: When filling in the phone number, please pay attention to the selection of the area code.

 

U-Type SiC Heating Element – Product Details

U-type silicon carbide heating elements consist of two straight rods connected by an end conductive bridge, forming a high-temperature resistive heater. They operate at up to 1625°C (in oxidizing atmospheres) and are ideal for side-wall installation in furnaces requiring U-shaped electrical loops without bent components. Widely used in pusher kilns and car-bottom furnaces due to their structural adaptability.

  • Product Name: U-Type Silicon Carbide Heating Element
  • Material: High-purity hexagonal α-SiC (≥99% purity)
  • Voltage: 220V/380V
  • Density: Hot zone density up to 2.96 g/cm³
  • Service Life: Up to 2200 hours (continuous operation)
  • Diameter: 8–85 mm

 

5D-Materials 5D U-Type Silicon Carbide Rod Product Advantages

  1. Mechanical Stability: Avoids stress concentration issues of single-bent rods, ensuring structural reliability with a bending strength of 100–120 MPa.
  2. Distinct Cold/Hot Zones: Effectively reduces temperature at wall-penetrating ends, protecting furnace walls and electrical systems.
  3. Large Furnace Compatibility: Suitable for long heating zones or large-volume furnaces.
  4. Customizable Dimensions: Diameters from 8–65 mm; cold/hot end sizes adaptable to furnace structures.
  5. Energy-Efficient: Uniform heating with low energy consumption, meeting green industrial standards.
  6. ISO-Certified Production: Manufactured in ISO-certified facilities with an annual capacity of 500 tons.
  7. Export-Grade Packaging: Reinforced wooden cases with foam liners ensure safe shipping.

 

U-type Silicon Carbide Heating Element - Applications

  • Pusher/Plate Kilns: Symmetrical layout for continuous sintering of ceramics and functional materials .
  • Car-Bottom Furnaces: Suitable for large chambers and heavy-duty conditions; U-shape reduces wall penetrations .
  • Box Furnaces: Easy installation and replacement for frequent start-stop cycles .
  • Muffle Furnaces: Used in calcination, ash testing, and lab analysis .
  • Atmosphere Furnaces: Compatible with inert or controlled atmospheres .
  • Continuous Industrial Kilns: Tunnel kilns, roller hearth kilns for sintering ceramics, electronics, and new energy materials .
  • Glass Industry: Melting and auxiliary heating for specialty glass, fiberglass, and optical glass

 

Definition of U-type Silicon Carbide Heating Element

The U-type silicon carbide heating element is an integrated high-temperature resistor made from high-purity recrystallized SiC. Its two straight rods are connected by an end bridge, with customizable parameters (hot-end diameter, center spacing, hot/cold zone lengths, etc.) to suit diverse furnace layouts.

Operating at 1500°C in air, it offers high thermal radiation efficiency, thermal shock resistance, and stability for sintering and heat treatment in PV, ceramics, metallurgy, and glass industries

 

U-Type Silicon Carbide Rod - Product Structure Diagram

Product Structure Explanation:

  • OD: Outer diameter (mm)
  • D: Bridge diameter (mm)
  • HZ: Hot zone length (mm)
  • CZ: Cold zone length (mm)
  • OL: Overall length (mm)
  • A: Shank spacing (mm)
  • H: Connector bridge (mm)

Example: U-type, OD=16mm, OL=625mm, CZ=300mm, HZ=300mm, D=25mm, R=3.18Ω, denoted as U-625×300×16​

Note: Contact us for other specifications or customization.

 

SG-Type SiC Heating Rod Installation Method

  1. Inspection: Check for cracks before installation. Ensure no structural issues in the furnace affecting rod placement.
  2. Installation: Vertical or horizontal installation. Self-supporting at high temp, but furnace must allow free thermal expansion.
  3. Fixing: Install ceramic chucks/clamps on cold ends, ensure they are outside furnace to prevent overheating.
  4. Power Connection: Use flat aluminum braid and spring clamps to connect to 110–480V power supply, matching resistance correctly.
  5. Heating Debugging: Gradually increase to working temp to avoid thermal shock. Enter normal load after stable furnace temp.
  6. Regular Maintenance: Check aluminum-coated connectors and clamps for looseness or corrosion.
  7. Note: Installation should be performed by professionals. Contact us for detailed manuals.

 

U-Type Heating Scenario Design Recommendations

U-Type SiC Heating Element Configuration & Furnace Matching

  • Layout: Reserve ground-level or supported placement space in the furnace.
  • Mounting: Typically horizontal or suspended.
  • Hot Zone: Align with effective heating width; avoid wall contact.
  • Cold Zone Length: Furnace wall thickness + 50–150 mm external connection allowance. This prevents end overheating if too short and avoids an extended non‑heating zone if too long.
  • Furnace Port Size: Recommended port diameter is 1.4–1.6 times the cold end diameter. Seal with ceramic fiber gaskets to accommodate thermal expansion and prevent stress damage.
  • Spacing Design: Maintain a minimum distance of ≥3× element OD from furnace charge or walls. Center-to-center spacing between adjacent SiC rods should be ≥4× OD. This reduces radiation shielding and improves temperature uniformity.
  • Temperature Control System: An intelligent system is recommended for precise regulation, suppressing thermal shock and extending service life.
  • Atmosphere: Optimal in oxidizing atmospheres. For reducing, carburizing, or hydrogen-rich conditions, reduce operating temperature or implement protective measures. Contact us for specific application guidance.

 

U-Type Silicon Carbide Rod - Product Size Chart

Number Size Hot Zone surface area Nominal loading values* Standard
pin hole
location*2
External Diameter Hot Zone Length Cold End Length Overall Length
mm mm mm mm cm² Voltage Power Resistance
U-625*300*16 16 300 300 625 301 121 4600 3.18 40
U-725*400*16 400 300 725 402 160 6080 4.21
U-825*400*16 400 400 825 402 163 6190 4.29
U-825*500*16 500 300 825 502 200 7600 5.26
U-730*300*20 20 300 400 730 376 112 5990 2.09 45
U-780*350*20 350 400 780 439 130 6960 2.43
U-830*400*20 400 400 830 502 147 7860 2.75
U-830*450*20 450 350 830 565 164 8770 3.07
U-930*500*20 500 400 930 628 183 9790 3.42
U-1030*500*20 500 500 1030 628 185 9900 3.46
U-1030*600*20 600 400 1030 753 218 11700 4.06
U-1130*600*20 600 500 1130 753 220 11800 4.1
U-1130*700*20 700 400 1130 879 253 13500 4.74
U-1230*700*20 700 500 1230 879 256 13700 4.78
U-1230*800*20 800 400 1230 1005 289 15500 5.39
U-1330*800*20 800 500 1330 1005 291 15600 5.43
U-835*400*25 25 400 400 835 628 131 9370 1.83 55
U-935*400*25 400 500 935 628 133 9510 1.86
U-885*450*25 450 400 885 706 147 10500 2.06
U-935*500*25 500 400 935 785 163 11700 2.27
U-1035*500*25 500 500 1035 785 165 11800 2.31
U-985*550*25 550 400 985 863 179 12800 2.5
U-1035*600*25 600 400 1035 942 195 13900 2.74
U-1135*600*25 600 500 1135 942 197 14100 2.75
U-1135*700*25 700 400 1135 1099 227 16200 3.18
U-1235*700*25 700 500 1235 1099 229 16400 3.2
U-1235*800*25 800 400 1235 1256 259 18500 3.63
U-1335*800*25 800 500 1335 1256 261 18700 3.64
U-940*500*30 30 500 400 940 942 148 13800 1.59 55
U-1040*500*30 500 500 1040 942 150 14000 1.61
U-1040*600*30 600 400 1040 1130 177 16500 1.9
U-1140*600*30 600 500 1140 1130 179 16700 1.92
U-1140*700*30 700 400 1140 1319 206 19300 2.2
U-1240*700*30 700 500 1240 1319 208 19400 2.23
U-1240*800*30 800 400 1240 1507 235 22000 2.51
U-1340*800*30 800 500 1340 1507 237 22200 2.53
U-1340*900*30 900 400 1340 1696 264 24700 2.82
U-1440*900*30 900 500 1440 1696 266 24900 2.84
U-1540*1000*30 1000 500 1540 1884 295 27600 3.15
U-1045*600*35 35 600 400 1045 1319 179 19200 1.67 60
U-1145*600*35 600 500 1145 1319 181 19400 1.69
U-1145*700*35 700 400 1145 1539 209 22400 1.95
U-1245*700*35 700 500 1245 1539 211 22600 1.97
U-1245*800*35 800 400 1245 1759 239 25600 2.23
U-1345*800*35 800 500 1345 1759 240 25700 2.24
U-1345*900*35 900 400 1345 1979 269 28800 2.51
U-1445*900*35 900 500 1445 1979 270 28900 2.52
U-1545*1000*35 1000 500 1545 2199 300 32100 2.8

Nominal load values measured at 1000°C in open air. Convert to current, tolerance is ±15% of center value.

Select a suitable rod model from the table above based on your application. Contact us for free samples if interested.

 

Crossbar size

D(External Diameter) 16 20 25 30 35
D0（Link Bridge Outer Diameter） 25 30 35 40 45
H（Link Bridge Length） 76 90 110 125 140

Contact Us

Reviews

There are no reviews yet.

Be the first to review “U-Type Silicon Carbide Heating Element”