Laser welded Fin Tube Coils - DATANG Lamellenrohr-Wärmetauscher: Effiziente Wärmeübertragungslösungen für Ihre Bedürfnisse.

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Laser welded Fin Tube Coils

Modell-Nr. Laser Welded Fin Tube Coils
Prinzip Mischen von Wärmetauschern
Stil Stahl-Typ
Material Edelstahl
Inspektion SGS BV
Transport-Paket Sperrholz
Spezifikation 1007060
Warenzeichen datang
Ursprung China
HS-Code (HS-Kodex) 7306400000
Produktionskapazität 800000Stück/Jahr

  • Produktdetails
  • Produkteigenschaften

Laser-Welded Finned Tube Coils for Heat Exchanger

Laser-welded finned tube coils represent a core process applying laser welding technology to the secondary forming of finned tubes. It achieves a metallurgical bond between fins and the base tube through high-precision laser welding before coil winding into compact, high-efficiency heat exchange units. Key technical features and application advantages are as follows:


Ich.Laser-Welded Finned Tube Coils Core Process & Technical Advantages

  1. Laser Welding Precision Bonding

    • Utilizes a high-energy laser beam (1–6 kW) to achieve deep fusion welding between fins and the base tube. Weld tensile strength exceeds 95% of the base material.
    • Heat Affected Zone (HAZ) width < 0.1 Mm, minimizing material lattice deformation and ensuring structural stability during coil bending‌.
  2. Material Compatibility & Lightweight Design

    • Base tube thickness: 0.8–1.5mm, Dicke der Lamellen: 0.3–1.0mm. Achieves 30% weight reduction and lower material costs compared to traditional processes‌.
    • Supports combinations of dissimilar materials like stainless steel (304/316L), Kohlenstoffstahl, Kupfer, and aluminum, adapting to corrosive media environments (e.g., chemical reactors, seawater cooling systems)‌.
  3. Structural Adaptability for Coil Forming

    • Laser welds are uniform and dense, free from localized thermal stress concentration. Allows direct cold or hot bending.
    • Achieves minimum bending radius of 1.5 times tube diameter (e.g., Ø25mm tube bendable to R37.5mm), meeting compact space layout requirements‌.

II.Laser-Welded Finned Tube Coils Performance Advantages & Measured Data

  1. Enhanced Heat Transfer Efficiency

    • Contact thermal resistance approaches zero (over 60% lower than traditional HF-welded tubes). Heat transfer coefficient increases by 18–25%‌.
    • Case Study: Petrochemical catalytic cracking unit retrofit increased flue gas waste heat recovery rate from 62% to 89%, saving 12,000 tons of coal annually‌.
  2. Resistance to Operational Fluctuations

    • Vibration fatigue life reaches 10⁷ cycles (HF-welded tubes: only 3×10⁶ cycles), withstands thermal stress shock from boiler start-stop cycles with ΔT=300°C‌.
    • Offshore Platform Case: No crevice corrosion observed after 8 years in environments with Cl⁻ >5000mg/L. Service life is 2.6 times that of embedded fin tubes‌.
  3. Long-Term Cost Effectiveness

    • Initial cost is 15–20% higher. However, low fouling factor (0.0002 m²·K/W) and reduced maintenance enable recovery of the cost difference within 3–5 years. Service life reaches 15–20 years‌.

III.Laser-Welded Finned Tube Coils Typical Application Scenarios

Sector Application Equipment Leistung
HVAC&R Fan Coils / Air Cooler Evaporators Heat transfer area increased by 3–10x; Cooling energy efficiency improved by 15%‌
Energy & Power Boiler Economizers / Air Pre-heaters Flue gas temperature reduced below 120°C; Thermal efficiency increased by +3%‌
Chemical & Pharma Reactor Coils / Condensers Resists strong acid/alkali corrosion, reduces shutdown frequency for cleaning‌
Shipbuilding Seawater Cooling Coils Compact design saves cabin space; Resistant to salt spray corrosion‌

IV.Laser-Welded Finned Tube Coils Custom Specification Reference

  • Base Tube Size‌: Ø16–32mm (Expandable to Ø150mm)‌
  • Fin Parameters‌: Height 8–15mm, Spacing 2.5–15mm, Helix Angle 30°–60°‌
  • Coil Configuration‌: Single-layer spiral, Multi-layer concentric circles; Compatible with Shell & Rohr / Plate Heat Exchangers‌

V.Laser-Welded Finned Tube Coils Future Development Direction

  1. Dissimilar Material Welding Innovation‌: Combinations like Inconel 625 fins + 316L base tube to solve thermal expansion matching issues at 900°C‌.
  2. Smart Production Line Integration‌: Vision positioning systems (±0.05mm accuracy) with adaptive laser parameter control for zero-defect welding‌.
Modell-Nr. Lasergeschweißtes Lamellenrohr
Prinzip Mischen von Wärmetauschern
Stil Stahl-Typ
Material Edelstahl
Inspektion SGS BV
Transport-Paket Sperrholz
Spezifikation 1007060
Warenzeichen datang
Ursprung China
HS-Code (HS-Kodex) 7306400000
Produktionskapazität 800000Stück/Jahr

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