The PRO-I 2200 is a professional inverter arc welding unit with microprocessor control, designed to deliver high performance, maximum reliability and total control of the welding process. Developed for complex industrial applications and intensive on-site use, it represents an advanced solution for stud welding, including Nelson-type studs, and internally threaded bushings.
Thanks to the latest-generation inverter technology, the PRO-I 2200 ensures extremely precise control of welding parameters, guaranteeing arc stability even with short welding times and low currents. The high reproducibility of the process enables uniform and consistent results, reducing rework and machine downtime.
With a welding capacity of up to Ø22 mm, the unit is suitable for both long arc and short arc welding. The high-performance cooling system allows intensive duty cycles and fast, continuous operating sequences, maintaining high efficiency even in large-scale production. Despite its available power, its reduced weight compared to traditional stud welding units facilitates mobile use and movement in dynamic working environments.
The integrated electronic power supply operates within a wide voltage range (320–495 V), ensuring stable operation even in the presence of unstable power sources, very long extension cables or generators. The robust structure, designed for heavy-duty conditions, ensures long service life and operational reliability.
The PowerPackage system, supplied as standard, allows multiple units to be connected to increase total output up to 3150 A, creating a high-energy modular configuration. This solution is ideal for applications requiring greater power while maintaining system flexibility and scalability.
Continuous adjustment of welding current and time, together with automatic constant current management, enables complete process control. The user interface is intuitive and durable: the rotary push-button control and the large digital display allow quick viewing and setting of all operating parameters. Pre-installed welding programs simplify initial configuration, while the possibility of storing customized settings makes the unit adaptable to specific production requirements.
The integrated monitoring system ensures continuous quality control by automatically recording the parameters of the last ten welds. An optional extended memory is available for storing up to 16,000 cycles, with USB data transfer for analysis and traceability on a PC. This makes the PRO-I 2200 particularly suitable for environments where documentation and process control are essential.
The range is completed by the possibility of integrating a shielding gas module, an automatic system with VBZ stud feeder and automatic welding head, as well as simultaneous management of up to four welding guns with independent adjustments via the external PRO-SPLIT adapter. A trolley-mounted version with large wheels and telescopic handle is also available, ideal for mobile applications.
The PRO-I 2200 stands out as a high-performance inverter welding unit, designed to ensure power, precision and quality control in every operational context.
Drawn arc stud welding is a process used to securely join a metal threaded stud to a metal surface. It is widely used in industrial applications because it creates strong, reliable, and long-lasting connections.
The process is carried out using a dedicated welding system equipped with a welding gun. When activated, the gun generates an electric arc that melts both the tip of the stud and the surface beneath it at the same time.
This creates a weld pool, which is held in place by a ceramic ferrule. The ferrule helps contain the molten metal and ensures a clean, consistent weld, resulting in a high-quality and durable joint.
In the long arc cycle welding process, the welding stud or pin is joined by an electric arc that generates enough heat to melt both the base material and the fastener. The resulting molten pool is either contained by a ceramic ferrule or left exposed and protected by an inert gas, which is automatically supplied through a protective positioner mounted on the welding gun.
Short arc cycle welding, on the other hand, produces the electric arc in just a few milliseconds. Because of the extremely short welding time, much less material is melted compared to the long arc process. This method is ideal for welding threaded studs up to M8 on thin sheet metal, minimizing heat input and reducing the risk of distortion.
The key elements for achieving a high-quality weld include careful surface cleaning, the selection of the correct equipment that A.T.S. Lamberti normally recommends to the customer, the proper adjustment of welding parameters, and the use of certified drawn arc welding studs.
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