Web Menu

Product Search

Language

Share

Spiral Quartz Heating Elements

Spiral Quartz Heating Elements

-- Steady & Reliable Manufacturer --

Introduction

Spiral Quartz Heating Elements represent a specialized segment within our heating product line, combining the superior radiant heat efficiency of quartz glass with a precisely engineered coiled resistance wire for rapid, directional heat transfer. Unlike straight linear elements, the spiral configuration concentrates the heat output, making these elements ideal for applications requiring intense, localized infrared heating and quick temperature ramp-up. We manufacture these elements by expertly embedding high-resistance alloy wires (such as Nichrome or FeCrAl) within high-purity quartz tubing. The quartz acts as a protective, highly efficient transparent insulator, allowing the maximum amount of infrared radiation to pass through unimpeded, delivering heat directly to the target surface. This design is particularly favored in industrial curing, drying, and preheating processes where energy efficiency and precise temperature control are essential performance metrics.

Our manufacturing process ensures the uniform coiling and tensioning of the resistance wire, which is critical for consistent heat distribution and element longevity. Poor coiling can lead to hotspots and premature failure. We utilize high-quality, seamless quartz tubing from our own production line, guaranteeing the dimensional stability and clarity necessary for optimal radiant output across the Short-Wave (SW), Medium-Wave (MW), and Far-Infrared (FIR) spectrums. By carefully controlling the pitch and diameter of the spiral, we can tailor the element's output power and radiant intensity to meet specific client requirements, such as those found in plastic forming, textile drying, or semiconductor wafer baking. The high thermal shock resistance of quartz allows these elements to be switched on and off repeatedly without degradation, leading to extended service life and reduced maintenance overhead for our customers. We offer various termination styles, including ceramic end caps and specialized wire connectors, ensuring easy integration into existing heating racks and industrial oven systems globally.

Clients looking for highly efficient, clean heat sources turn to our spiral quartz elements because they generate zero emissions, are chemically inert, and respond instantly to power adjustments. As a leading manufacturer in Yancheng, we provide comprehensive technical support to help determine the optimal element configuration (wattage, length, spiral density) for your specific heating application, ensuring maximum thermal performance and operational stability.

Specification Parameters

ParameterDetails
Quartz GradeHigh Purity Clear Fused Quartz (SiO2​≥99.99%)
Heating Element MaterialNichrome (NiCr) or Iron-Chromium-Aluminum (FeCrAl) Alloy
Outer Tube Diameter (OD)Standard 10 mm to 30 mm (Custom profiles available)
Voltage CompatibilityCustomizable 110V, 220V, 380V (Single or Three-Phase)
Power Output DensityUp to 100 W/cm (Adjustable based on spiral pitch)
Effective Wavelength RangeShort-Wave (∼1.0 μm), Medium-Wave (∼2.5 μm)Max Surface Temperature800∘C to 1000∘C (Element core temperature higher)
Termination TypeCeramic End Caps with Screw Terminals or Flexible Wire Leads

The specifications above highlight the robust engineering behind our spiral heating elements. The choice between Nichrome and FeCrAl for the resistance wire is critical, determining the maximum operating temperature and lifespan; FeCrAl generally offers higher temperature capability and longer life in air. The quartz tubing thickness is carefully calculated to balance mechanical strength against optimal infrared transmission. A key competitive advantage is our precise control over the spiral winding pitch. A tighter pitch increases the power density and surface temperature, while a looser pitch distributes heat more evenly over a longer area. We utilize advanced winding machinery to ensure pitch uniformity is maintained within ±0.5 mm across the entire heated length, which guarantees uniform radiant flux distribution on the target material. The spectral range output (SW or MW) is crucial; Short-Wave radiation penetrates deeper into materials like plastics, while Medium-Wave is ideal for surface coatings and water-based substances. Our high-purity quartz ensures transparency across both these critical infrared windows, maximizing energy transfer. All elements undergo a rigorous 100% continuity and insulation resistance test at maximum rated voltage before packaging. We offer specialized reflector coatings (e.g., gold or white ceramic) on the quartz exterior for directional heating applications, further enhancing energy efficiency by focusing radiant heat towards the processing zone.

Applications

  • Industrial Drying and Curing: Rapidly curing paints, varnishes, powder coatings, and printing inks on substrates like paper, metal, and textiles, accelerating production line speeds significantly.

  • Plastics Processing: Preheating plastic sheets for thermoforming, softening edges for bending, or welding plastic components where focused, non-contact heat is necessary to prevent material degradation.

  • Food Processing: Used in commercial ovens for baking, browning, and keeping food warm, leveraging quartz's ability to provide a clean, non-contaminating heat source.

  • Semiconductor Wafer Processing: Providing precise, localized heating for baking photoresists and curing polymers on silicon or glass wafers, benefiting from quartz's high purity.

  • Infrared Saunas and Health Applications: Used as efficient, long-lasting radiant heat sources in modern infrared sauna designs due to the clean heat and pleasant light output.

  • Laboratory and Scientific Heating: Integrated into small furnaces, heat exchangers, and analytical instrumentation requiring highly controllable, fast-responding thermal energy.

The unique advantage in application comes from the element's fast response time—achieved by the spiral coil heating the quartz tube rapidly. This allows for precise control in automated manufacturing lines, saving energy by only applying heat when necessary. In textile and paper drying, for instance, the intense, focused IR radiation penetrates deep into the material to remove moisture efficiently, avoiding surface scorching common with conventional convection heat. For systems that require high uptime, the robust construction of our spiral elements provides reliability. We can integrate internal thermal fusing or safety mechanisms into the design upon request, adding an extra layer of protection against over-temperature failures. Our extensive application experience allows us to advise clients not only on the heating element itself but also on optimal reflector geometry and array layout to maximize the uniformity of heating across large industrial zones, whether in vertical or horizontal processing configurations.

Advantages

  • Instantaneous Heat Response: Quartz elements have a very low thermal mass and the spiral coil heats quickly, allowing them to reach full temperature in seconds, vastly improving process throughput and minimizing energy waste during intermittent operation.

  • High Infrared Energy Transfer: Fused quartz transmits over 90% of infrared radiation, meaning less energy is wasted heating the air and more is directed into the target material, resulting in superior energy efficiency compared to opaque heating sources.

  • Precise Directional Heating: The compact, high-density spiral design enables highly focused, concentrated heat output, making it perfect for applications requiring defined heating zones and spatial control.

  • Clean and Non-Contaminating: The quartz sleeve protects the heating wire from oxidation and corrosion while remaining chemically inert, ensuring that the element produces no emissions or contaminants, critical for clean industries like food and semiconductor.

  • Long Service Life and Reliability: The high thermal stability of quartz protects the heating coil from thermal stress, extending the operational life of the element, even under continuous, high-temperature cycling.

  • Customizable Wavelength Output: We can tune the element construction (wire material and diameter) to optimize the infrared output wavelength (Short, Medium, or Fast Medium Wave) to maximize absorption efficiency for the client's specific material being processed.

The key distinction of our spiral elements lies in their robust engineering for continuous industrial use. While many elements on the market are built for light use, ours are designed with heavy-duty terminals and high-grade wire to withstand the vibrations and high duty cycles of automated manufacturing. This focus on durability translates into less maintenance and higher system uptime for our customers. Furthermore, the inherent safety of the quartz sleeve—acting as an electrical insulator—makes these elements safe to operate even when subject to splashes or moisture, though standard electrical precautions must always be followed. By choosing a heating element manufactured from our own high-quality quartz tubes, clients benefit from consistent material quality and supply chain reliability.

Payment and Shipping

As a dedicated manufacturer and global exporter of industrial components, we offer competitive and flexible international trade payment options. We primarily accept T/T (Telegraphic Transfer), typically requiring a 30% deposit upon order placement and the remaining 70% balance before dispatch. For large-volume recurring orders from established partners, we can discuss L/C (Letter of Credit) terms. We also support secured transactions through major trade platforms.

Shipping and Logistics: Every Spiral Quartz Heating Element is treated as a fragile component requiring specialized logistics.

  • Protective Packaging: Elements are individually secured within custom-fit foam slots or separated by high-density polyethylene padding to prevent movement and shock during transit. Batch orders are consolidated into heat-treated wooden crates (IPPC certified) suitable for international shipping.

  • Shipping Methods: We offer a range of shipping options: fast air cargo (e.g., DHL, FedEx, TNT) for smaller, urgent orders; and consolidated sea freight for cost-effective bulk orders (FOB, CIF, or DDU terms are available).

  • Documentation: We provide all necessary export documentation, including Commercial Invoice, Packing List, Certificate of Origin, and technical compliance certificates, ensuring smooth customs clearance globally.

Lead times vary based on configuration; standard elements are typically ready in 10−15 working days, while complex custom voltages or spiral geometries may require 3−4 weeks. We prioritize clear communication throughout the manufacturing and shipping process to meet client installation schedules.

Frequently Asked Questions (FAQ)

  • Q: What is the primary difference in performance between Short-Wave and Medium-Wave quartz elements?

  • A: Short-Wave (around 1.0 μm) reaches a higher color temperature, penetrates deep into many solid materials, and is ideal for fast heating cycles. Medium-Wave (around 2.5 μm) has a lower color temperature, is highly absorbed by water and many organic coatings, and is generally preferred for drying and surface curing applications. We manufacture both based on your material requirements.Q: How does the ambient operating temperature affect the lifespan of the spiral element?A: The lifespan is primarily determined by the operating temperature of the internal resistance wire. While the quartz protects the wire, operating the element continuously near its maximum rated temperature (800∘C to 1000∘C surface temp) will cause faster degradation. We always recommend consulting our technical team to select a wire grade and power density that offers the required heat while maintaining an acceptable service life at your operating point.

  • Q: Can these elements be used in a vacuum or inert gas atmosphere?

  • A: Yes, the sealed quartz envelope makes these elements perfectly suitable for high-vacuum, nitrogen, or argon environments, as the element's performance relies only on radiant heat transfer, and the quartz remains stable. This is a significant advantage over exposed filament heaters.

  • Q: Do you offer these spiral elements with built-in reflective coatings?

  • A: Yes, we provide both gold (for high reflection efficiency) and white ceramic coatings on the exterior surface of the quartz tube. Applying the coating on one side helps to focus the radiant energy directionally, which significantly increases heating efficiency in conveyor and drying tunnels.

From Made-in-China to
Global Smart Manufacturing

Yancheng Mingyang Quartz Products Co., Ltd. is a company specializing in the production of quartz and special glass products. Yancheng Mingyang Quartz Products Co., Ltd. is the production plant of Jinzhou Mingde Quartz Glass Co., Ltd. in Jiangsu, Since its establishment, the company has developed rapidly, introduced advanced technology and production equipment at home and abroad, and continuously improved and improved product quality. Relying on its own advantages, we have developed a variety of products suitable for the market and meet the needs of different customers, and solved many urgent production problems for our customers.

The company's products include quartz glass tubes, double-hole quartz glass tubes, quartz glass rods, quartz sheets, sapphire windows, calcium fluoride glass windows, infrared ultraviolet coatings, high-pressure resistant aluminosilicate glass window panels, quartz glass instruments, high borosilicate glass instruments, quartz crucibles, quartz gold-plated tubes, quartz heaters, quartz infrared heating tubes, far-infrared directional radiation heaters ultraviolet germicidal lamps and other special types of quartz glass products.

Yancheng Mingyang Quartz Products Co., Ltd.
Message Feedback
Twin-Tube Quartz Heating Elements Quartz Tubes Quartz Grinding Jars Quartz Plates and Discs for Optical and Thermal Applications