Product Name: Laser Welded Carbon Steel Finned Tube
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Laser welded finned tubes are high-efficiency heat exchange elements that use laser welding technology to firmly connect carbon steel base tubes and fins. They are widely used in industrial heat exchange, heating systems, and other fields. Their core advantages lie in high welding strength (≥600MPa), excellent heat exchange efficiency (more than twice that of high-frequency welding), and lower material costs.
Key Technical Features of Laser-Welded Carbon Steel Finned Tubes
Welding Performance
Utilizing laser welding, the weld penetration rate is ≥99%, effectively preventing crevice corrosion and extending service life.
Narrow weld seam (0.1-0.3mm), small heat-affected zone, allowing for carbon steel base tube thickness as low as 0.8-1.5mm and fin thickness as low as 0.3-1mm, significantly saving material.
Supports different material combinations (e.g., carbon steel base tube + stainless steel fins), breaking through the limitations of traditional processes.
Heat Exchange Efficiency
The heat dissipation area is nearly 50% larger than that of high-frequency welded finned tubes, and the heat exchange rate is more than twice that of high-frequency welded finned tubes.
Welding without filler material reduces thermal resistance and improves heat transfer performance.
Applications of Laser-Welded Carbon Steel Finned Tubes
Industrial Applications: Power plant cooling systems, chemical heat exchangers, flue gas desulfurization equipment, etc.
Civilian Applications: Wall-hung boilers, boiler heat exchangers, energy-saving and environmentally friendly, meeting national emission standards.
Special Needs: Flexible processing adaptable to complex installation environments.
Key Manufacturing Processes for Laser-Welded Carbon Steel Finned Tubes
Pre-treatment: Clean the surface of the base tube and fins, removing oil and rust to ensure welding quality.
Welding Parameters: Precisely control laser power, speed, and shielding gas (such as argon) to prevent oxidation.
Inspection Standards: Must pass weld flaw detection, dimensional measurement, and performance testing to ensure no incomplete or faulty welds.
| Characteristic | Laser Welded Carbon Steel Finned Tube | High Frequency Welded Finned Tube |
|---|---|---|
| Weld Penetration Rate | ≥99%, no root wrinkles | Prone to incomplete penetration and root wrinkles |
| Heat Exchange Rate | More than 2 times higher | Lower |
| Material Cost | Thinner base tube/fins, cost-saving | Higher material consumption |
| Applicable Tube Diameter | Can process small diameters (small heat-affected zone) | Limited by process constraints |
