July 2021


offers all prerequisites to complete the required UHP and HP jobs in a satisfactory manner.


The Smart Welding Station P3 UHP is designed to fulfil these jobs with welding heads of the type UHP 500 or UHP 625. These orbital TIG welding heads produce joints of unrivalled quality without cracks, pores and rough- ness, their closed chamber provides perfect gas pro- tection to avoid heat tint of the tubes and reduced particle emission to keep the cleanroom clean. The gas cooled UHP type welding heads allow autogenous welding of thin-walled tubes with diameters between 1.6 and 6.35 mm. As precision welds require precision adjustment, the welding current can be programmed in steps of 1/10 A.


With a weight of only 17 kg the power source P3 UHP is the lightest automatic welding station on the market and can be carried without hoisting equipment, which is comfortable in the workshop but especially advanta- geous if used on site.


Figure.2: On-site installation for medical gas lines in a hospital


usually connected by welded joints which must meet extremely stringent provisions.


Cleanroom equipment manufacturers and suppliers of related components like tubes, valves, fittings etc. execute these welds in their workshops, whereas cleanroom builders who mount the final installations must carry out the welds on site (Fig.2). Anyhow, the required joint quality can only be reached if all of these welds are manufactured under clean room conditions.


The ultimate goal of the P3 UHP concept had been to make available specific welding equipment which is exclusively designed and intended for cleanroom purposes. The end user of a cleanroom facility un- derstands the quality of the joints has direct conse- quences on the results of his own production, so he expects perfect welds proved by a complete and re- liable documentation. The subcontractor who carries out the welds takes care that his welding equipment


To avoid additional particle release, water cooling is not wished in cleanroom environments and not nec- essary to operate UHP type welding heads. However, if improved performance is required or tubes with more important diameters up to 170 mm have to be joined, water cooled closed chamber welding heads of the MW type become the tool of choice, in this case a sep- arate cooling unit can be added to the Smart Welding Station P3 UHP. Finally, further orbital welding heads from Polysoude or even other suppliers are supported as well. Automatic welding guarantees best results if the relat- ed procedures are thoroughly respected. To support the operator as far as possible, the Smart Welding Sta- tion P3 UHP comes with several unique features. Com- pared with a conventional remote control pendant or even a tablet it has turned out that a Wireless Touch- screen Controller (WTC) offers substantial advantages concerning ergonomics of use, for example flexible access to one or several Welding Stations and their re- lated welding heads (Fig.3). The set values of the mass flow meters for welding and backing gas are displayed directly on the screen, the software-controlled flow rates can be adjusted precisely by means of particular buttons.


The authorization of the operator himself, the used weld- ing gas type and the identity of the workpiece can be quickly determined by a bar code scanner which trans- mits the data to the welding station via WiFi or by ca-


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