Lord Fin Tube-High Frequency Welding of Spiral Finned Tube

Finned tube manufacturer introduction

We are a renowned finned tube manufacturer located in China, specializing in the production of various high-quality finned tubes and heat exchangers. Our expertise includes the manufacture of finned tubes, finned tube heat exchangers, high-frequency welding spiral finned tubes, and heat pipe heat exchangers.

Our company boasts a strong technical foundation and a skilled production management team. We have recruited experienced managers and local operators with expertise in high-frequency welding fin control from the Wuxi area. This team forms the backbone of our production technology and has successfully addressed the challenges associated with high-frequency welding of fin tubes, including materials like alloy steel and stainless steel.

Our dedicated staff has produced a significant volume of high-frequency welded fin tubes for various applications, including boilers, waste heat boiler flues, and coal-saving rotary fin tubes for air filters in renowned institutions such as Shanghai Boiler Plant, Harbin Boiler Plant, Dongfang Boiler Plant, Wuhan Boiler Plant, and Harbin 703 Research Institute of Shipping Corporation.

Our manufacturing facility spans 18 meters in width, 60 meters in length, and 7 meters in height, with three spans in total. The workshop features a clean and well-lit terrazzo floor, making it a model factory within our industry.

In terms of equipment, we utilize state-of-the-art 200 kW High-Frequency machinery, with welding mechanisms developed using cutting-edge technology. These mechanisms offer strong conductivity, full power utilization, high welding rates, and rapid welding speeds, among other advantages.

Our production capacity is impressive, with the capability to produce up to 20 tons of finned tubes daily, allowing us to meet the demands of mass production from our valued customers.

Furthermore, our company possesses the design and manufacturing capabilities for various heat pipe heat exchangers, hot blast stoves, and finned tube economizers.

Finned Tube Materials and Types:

Our finned tubes are available in various materials, including:

- Weldable fins: carbon steel, corrosion-resistant steel, stainless steel, and alloy steel.

We offer both solid and serrated fins, providing flexibility to meet different application requirements.

High-Frequency Welding of Spiral Finned Tubes:

High-frequency welding of spiral finned tubes is a precise process that leverages the skin effect and proximity effect of high-frequency current. This process heats the outer surface of the steel strip and tube until it reaches a plastic or molten state, facilitating welding under specific pressure while winding the steel strip. This high-frequency welding method is essentially a solid-phase welding process. Compared to mosaic, brazing, or hot dip galvanizing, high-frequency welding excels in product quality, boasting a high bonding rate of fins, often reaching up to 95%. Additionally, it offers superior productivity and automation.

High-frequency welding is grounded in solid resistance heat, generating resistance heat through high-frequency current in the workpiece during welding. This heat raises the surface of the welding zone to a molten or near-plastic state, and then a forging force is applied to achieve a solid metal bond. This welding method can be categorized into contact high-frequency welding and induction high-frequency welding, depending on how the high-frequency current generates heat in the workpiece. Contact high-frequency welding involves mechanical contact between the high-frequency current and the workpiece, while induction high-frequency welding generates induction current within the workpiece through an external induction coil. High-frequency welding is a specialized and robust welding technique, requiring dedicated equipment tailored to the specific product. It offers high productivity and welding speeds of up to 30 meters per minute, primarily used for welding longitudinal or spiral joints in pipes.

High-frequency welding serrated spiral finned tubes