Polysoude P3 UHP High Purity Orbital Welding Station

Overview

The Polysoude P3 UHP is a smart welding station for orbital TIG welding of tubes without filler wire, designed around the needs of ultra high purity piping. Polysoude explains that it was primarily conceived for the semiconductor market, and that its precision makes it equally suited to other demanding high purity industries. It works with Polysoude closed chamber welding heads, which enclose the joint in shielding gas and produce the smooth, oxide-free inner bead that pharmaceutical, biotech, food and specialty gas systems require. With a weight of only 17 kg, the manufacturer describes the Polysoude P3 UHP as ultra-compact, offering a strong combination of power density and features in an automatic welding power source.

Seven Star LLC supplies the Polysoude P3 UHP, closed heads and accessories to customers in Oman and the GCC, with quotation on request and engineering support in Muscat. Buyers are usually installation contractors and plant engineering teams responsible for clean utilities such as purified water, water for injection, clean steam and process gases.

Working Principle of Autogenous Orbital Welding

In autogenous orbital welding no wire is added: the square-butted tube ends are fused together by the TIG arc as the electrode rotates around the tube inside a closed head. Success depends on very consistent current, travel speed and gas coverage, because there is no filler to compensate for poor fit-up or heat variation. The Polysoude P3 UHP controls torch rotation under closed loop regulation and lets the welding current be programmed in steps of one tenth of an ampere within its 5 to 50 A range, so the small heat inputs needed for thin-wall sanitary tubing can be reproduced exactly.

The station also offers a synergic mode with auto-programming and a library of welding procedure data, so that a programme can be generated from tube dimensions and material rather than built from scratch. As a general rule of high purity welding, purge quality is as important as arc control; for that reason the Polysoude P3 UHP provides adjustable mass flowmeters for both welding gas and backing gas, with a safety valve, and the set flow rate is shown on a display.

Engineering Design of the Polysoude P3 UHP

The housing measures only 575 x 224 x 455 mm, with protection class IP 21 and insulation class H, and the electronics are cooled by forced ventilation. The torch side is air-cooled as standard; when high duty-cycle heads are used, an external closed loop water cooling unit with flow safety valve is available as an option. Input is single phase, auto-range 115 V or 230 V, plus or minus 10 percent at 50 / 60 Hz, and the brochure states that it is compatible with field power generators.

Operators program the Polysoude P3 UHP from a wireless touchscreen controller, a 10.4 inch quick release colour touchscreen, or a Windows PC running the free Plug and Play software over LAN or WLAN. Welding heads are detected automatically. A built-in printer documents each weld, a USB stick stores programmes and monitored data, and an OPC-UA interface connects the station to Industry 4.0 production systems. A wireless barcode scanner can select the right programme automatically from a code on the job.

Key Features

The features of the Polysoude P3 UHP listed by the manufacturer include the following.

• TIG DC welding, constant or pulsed, without filler wire, for closed chamber heads.
• Standard range 5 to 125 A at 230 V or 5 to 95 A at 115 V in 1 A steps.
• High precision range 5 to 50 A in 0.1 A steps on both supply voltages.
• Net weight 17 kg, among the lightest automatic orbital power sources Polysoude offers.
• Synergic auto-programming with a welding procedure library for many materials and applications.
• Mass flow control for welding gas and backing gas with flow safety valve and flow display.
• Recording of arc voltage, welding current, electrode angular position and welding speed during each weld.
• Dual welding head switch box option allowing alternate use of two heads with automatic programme selection.

Industrial Applications

In the GCC, high purity tube welding is growing with pharmaceutical manufacturing, dairy and beverage plants, hospital medical gas networks, laboratory gas systems and electronics facilities. Each of these needs welds that can be inspected by borescope and documented joint by joint. The Polysoude P3 UHP is a natural fit for contractors executing such projects in Muscat, the Rusayl and Sohar industrial estates and the free zones of Salalah and Duqm, as well as for in-house maintenance crews at food processing plants that modify stainless lines themselves.

Seven Star LLC supplies the Polysoude P3 UHP together with UHP series closed heads, cooling units, remote pendants and consumables to customers across Oman and the GCC. Shops that also produce structural or heavier pipe welds with conventional processes may want to look at the Lincoln Electric Power Wave S500 and the ESAB Rebel EMP 285ic, and further orbital stations and heads appear in the orbital pipe welding systems section of our catalogue.

Technical Specifications

Specification data for the Polysoude P3 UHP as published in the manufacturer brochure.

Options for the Polysoude P3 UHP include a wireless touchscreen controller or laptop, a full function remote control, a dual head switch box, a backing gas mass flow meter, a wireless barcode scanner, a continuous gas flow kit, a tachometer head control kit and an external 115 / 230 V cooling unit.

Call To Action

Send Seven Star LLC your tube outside diameters, wall thicknesses, alloy and quality documentation requirements, and our team in Muscat will quote the Polysoude P3 UHP with suitable closed heads. The manufacturer brochure can be downloaded from this page, and we support buyers throughout Oman and the GCC.