High Frequency Spiral Fin Tube Welding Machine | Spiral High-Frequency (Resistance) Welded Finned Tube Production Line

Spiral High-Frequency (Resistance) Welded Finned Tube Production Line Product Details

What is High Frequency Spiral Fin Tube Welding Machine?

The high frequency spiral fin tube welding machine uses high-frequency current as a heat source, welding steel strips and steel tubes through a specialized process to form integrated heat exchange elements.. Its core equipment includes:

Key Equipment in the High Frequency Spiral Fin Tube Welding Machine Production Process

High-Frequency Induction Heating System: Utilizes high-frequency current (200-500kHz) to create a skin effect, instantly heating the metal surface to a plastic state (900-1100°C for carbon steel / 1000-1200°C for stainless steel), heating only the contact layer (0.1-0.3mm thick).

Pressure Welding System: Mechanical pressure is simultaneously applied to the heated area, ensuring molecular-level diffusion bonding of the metals, resulting in a gapless metallurgical weld (tensile strength exceeding 90% of the base tube).

Precision Straightening Equipment: After rapid cooling via water or air cooling, a dedicated straightening device ensures tube straightness of ≤1mm/m and fin height deviation of ≤0.2mm.

Supporting Auxiliary Equipment

Feeder: Automatically feeds and positions the base tube, ensuring a precise welding starting point.

Tube Cutting Equipment: Cuts tubes to specified lengths on demand to meet the needs of various industrial scenarios.

This equipment is suitable for manufacturing spiral finned tubes made of carbon steel or stainless steel. It can simultaneously weld multiple tubes in a single operation, achieving high production efficiency.

High frequency spiral fin tube welding machine is the new generation of solid state high frequency welding machine, using all digital rectifying control board, full digital inverter control board, speed power closed loop technology, Ethernet networking technology, cloud control technology, using advanced manufacturing technology, has obtained reliability and technical specification verification in the welding pipe field, and has now entered the batch production stage and gradually pushed to the stage.

Solid state high frequency tube welder for carbon steel, aluminum, copper, stainless steel tube & pipe welding featured with high efficiency and reliable.

Power scope:10kW-3000kW
Frequency scope:50kHz-800kHz Rated DC voltage:450V
Power grid voltage:220V~450V,50/60Hz,3-phase

Full digital rectifying control board

The new generation of solid state welding machine, using the field programmable logic gate array (FPGA) main control chip, the main frequency up to 100M, 16 bit A/D conversion chip (the original control board using 8 bitA/D conversion chip), the high
precision of the data resolution; the cancellation of all the adjustable potentiometers on the board (12 control potentiometers in the original control board), color touch screen control System and parameter setting, debugging and operation are simple and intuitive. All parameters in the rectifier board can be transmitted to the host computer for display and recording through communication. The unique parallel working mode of FPGA ensures that the modules of the program operate at high speed and independently.

All digital inverter control board

The new generation of solid state high frequency welder has integrated the advanced control concept of similar products in the world. The field programmable logic gate array (FPGA) is used as the main control chip to realize the advanced control technology such as the fixed angle lock phase control, the upper / lower frequency locking protection and so on, which makes the equipment running more stable and more efficient.

The new bridge inverter technology design

The new technology inverter bridge plate is made of the 12mm purple copper plate surface plating technology and the oval inner channel cooling, the surface of the water cooled plate is more smooth and the cooling effect is better. The temperature of the power element is better than the original inverter bridge under the same environment (using the tin plating process of the 5mm thick purple copper plate and the surface welding copper tube cooling mode) Low 3~5 degrees Celsius improves the safety of power devices.

How is High Frequency Spiral Fin Tube Welding Machine Work?

The high-frequency welding production line of spiral finned tube produced is a single loop high frequency spiral fin tube welding machine. It is a finned tube welding equipment independently developed according to the requirements of Maoming Petrochemical Machinery Plant for welding stainless steel and alloy steel finned tubes, based on the experience and theory of finned tube welding technology, and referring to similar foreign products. The so-called single loop is to change the original dual loop (or three loop), inductive coupling high-frequency finned tube induction heating equipment into a single loop, capacitive coupling high-frequency finned tube induction heating equipment.

The product specifications are 100KW, 200KW and 300KW. In addition, in the winding, forming and welding of finned tubes, our company has made significant technical improvements with reference to foreign imported equipment. At present, the complete set of high-frequency finned tube welding equipment for single circuit and improved finned tube winding forming is exclusively produced by our company in China. The equipment has been used and operated by users for many years, with stable performance and advanced technology, and has been trusted and praised by all users.

The spiral fin tube equipment produced by our company has been exported to Türkiye, Malaysia and other countries. It created a precedent for Chinas high-frequency welding production line of spiral finned tubes to be exported to foreign countries.

Advantages Use High Frequency Spiral Fin Tube Welding Machine to Weld Finned Tube

High frequency welding machine welding uses the skin effect and proximity effect unique to high frequency current, so that the welding current is concentrated on the surface layer of the contact, the temperature of the surface joint surface rises quickly, and the surface to be welded is heated to a molten or near molten plastic state , then quickly extruded into a joint welding method.

This welding method has a series of advantages: the heat-affected zone of the weld is small, and the heating speed is fast, which can greatly improve the welding speed and weld quality of the frequency welding machine, and can use strip steel without pickling, shot peening and trimming as a blank At the same time, it can weld alloy steel, high alloy steel and non-ferrous metal pipes, greatly reducing the unit power consumption. A set of welding equipment can be used to produce various metal welded pipes. For different metals, it is only necessary to change the welding power and welding speed accordingly.

Welding speeds of up to 100-120 m / min. Such high welding speeds and beveled molten metal layers allow welding of light alloy, stainless steel, copper, brass, zirconium and other metal pipes without protection.