FN Series Resistance Circular Seam Welding Machine 35~160KVA

FN Series Resistance Circular Seam Welding Machine

The FN Series Resistance Circular Seam Welding Machine is a precision-engineered industrial welding system dedicated to creating flawless, continuous circumferential seams on cylindrical components. With power options ranging from 35KVA to 160KVA, this advanced rotary seam welding machine is engineered for producing airtight, high-integrity circular joints in applications where seam consistency and structural integrity are paramount. Perfect for manufacturing fuel tanks, pressure vessels, industrial drums, and cylindrical housings, the FN Series integrates sophisticated rotational control with robust welding mechanics to achieve superior circumferential welds in high-demand production settings.

Product Overview: 

The FN Series Circular Seam Welder employs synchronized rotational feeding and precision welding wheel contact to generate uniform, overlapping weld nuggets around cylindrical workpieces. The system rotates the component while maintaining consistent electrode pressure and controlled current flow, resulting in a continuous, hermetic seam. Equipped with specialized fixturing for round components and programmable circumferential speed control, this machine ensures repeatable quality for round-the-clock production of cylindrical assemblies.

Machine Structure & Key Components:

• Reinforced Steel Frame with Rotational Bed – Delivers unwavering stability to support cylindrical workpieces during rotation and welding.
• Variable-Speed Rotary Drive Assembly – Powered by a DC motor with smooth speed regulation, maintaining consistent rotational velocity for uniform circumferential welding.
• Modular Cylindrical Workholding System – Includes adjustable chucks, mandrels, and supporting rollers to accommodate various diameters and lengths of tubular workpieces.
• Dedicated Welding Transformer – Single-phase 380V input, rated for 50% duty cycle to sustain extended welding cycles on round components.
• Pneumatic Clamping & Pressure System – Ensures even electrode contact force around the full circumference of rotating parts.
• KF9 Series Rotary Welding Controller – Purpose-built control interface featuring tactile rotary dials and encoders for fine-tuning welding current, rotational speed, and timing sequences tailored to circular welding applications.
• High-Capacity SCR Contactor – Enables maintenance-free, reliable high-current switching essential for continuous circumferential welding.
• Comprehensive Cooling Circuit – Manages thermal load on the transformer, secondary conductors, and electrode arms during prolonged operation.
• Dynamic Alignment Mechanism – Maintains optimal electrode-to-workpiece orientation throughout the rotational welding cycle.

Key Features & Advantages:

• KF9 Rotary-Specific Welding Controller – Engineered with intuitive rotary dials and switches designed expressly for setting circumferential welding parameters, allowing precise control without complex digital interfaces.
• Precision Circumferential Speed Control – Offers infinitely adjustable rotational speed from 0 to 3.2 m/min (peripheral speed), ensuring consistent seam formation around curved surfaces.
• Flexible Workpiece Compatibility – Configurable fixturing supports cylindrical parts ranging from compact pipes to large-diameter tanks, with rapid changeover between sizes.
• Uniform Peripheral Pressure Distribution – Maintains consistent electrode force around the entire circular profile for homogenous weld penetration and appearance.
• Adaptable Welding Modes – Provides both continuous rotational welding for efficiency and pulsed welding mode for managing heat input on sensitive or coated materials.
• Broad Diameter Capacity – Capable of welding cylindrical components from 50mm up to 1200mm in diameter with appropriate tooling setups.
• High-Volume Circular Welding Capability – Automated rotational welding process enables efficient mass production of round components with minimal operator intervention.

Machine Details:

Technical Parameters:

Welding Samples:

Applications:

The FN Series Circular Seam Welding Machine is indispensable for industries requiring precision circumferential joints that ensure sealing integrity and mechanical strength:

• Pressure & Storage Vessels: LPG cylinders, hydraulic reservoirs, compressed air tanks, and industrial pressure containers.
• Automotive & Mobility Systems: Fuel tanks, exhaust assemblies, catalytic converter housings, and cylindrical structural elements.
• Process & Chemical Equipment: Reaction vessels, mixing tanks, chemical transport drums, and industrial storage containers.
• Food, Beverage & Pharmaceutical Processing: Sanitary stainless steel tanks, processing drums, and cylindrical component fabrication.
• HVAC & Fluid Handling: Ducting sections, pipe fabrication, blower housings, and cylindrical air movement components.
• Packaging & Industrial Packaging: Steel drums, cylindrical casings, and specialty container manufacturing.

Why Choose the FN Series Circular Seam Welder?

• Engineered for Circular Precision: Advanced rotational control ensures perfectly concentric, uniform seams around cylindrical geometries.
• Consistent Peripheral Weld Integrity: Controlled rotation combined with stable electrode pressure guarantees reliable seam quality over full circumferences.
• Optimized for Cylindrical Production: Tailored fixturing and rotational feeding streamline the welding of round components, enhancing throughput.
• Versatile Diameter Handling: Adjustable tooling accommodates diverse cylindrical sizes, making it adaptable across multiple product lines.
• User-Centric Operation: Straightforward KF9 controls and efficient setup procedures reduce operator training time and improve workflow efficiency.

For manufacturers of cylindrical components where weld integrity, sealing performance, and circular precision are non-negotiable, the FN Series 35–160KVA Circular Seam Welding Machine provides the specialized capabilities, reliability, and efficiency required to excel in competitive industrial markets.