Develops and manufactures multi-wire welding systems for large-diameter pipe mills using longitudinal seam and spiral pipe processes.
Uhrhan & Schwill Schweißtechnik – Lincoln Electric GmbH
EssenNew on Amplifa
About Uhrhan & Schwill Schweißtechnik
Uhrhan & Schwill Schweißtechnik – Lincoln Electric GmbH in Essen has specialised since 1963 in the planning, development, design, manufacture and assembly of special welding systems for large-diameter pipe mills. The product range includes 1-wire tack welding systems for metal active gas welding (MAG) as well as multi-wire internal and external welding systems for submerged arc welding (SAW) with up to five welding wires. The systems are designed in customised plant engineering to match customers' production programmes; in addition, existing systems are upgraded. More than 300 systems have been commissioned in over 35 large-diameter pipe mills worldwide. The offering also includes welding power sources, welding consumables such as wire-powder combinations, powder supply systems, ground brush systems and the Digital Welding System Z5 for quality assurance. A test laboratory at the site serves the continuous optimisation of systems and processes. The systems are used in longitudinal seam and spiral pipe mills.
- Site
- Essen
- Processes
- MAG tack welding (metal active gas welding) of pipe tack welds, Submerged arc welding (SAW) of pipe internal seams (multi-wire, up to 4 wires longitudinal seam / 3, Submerged arc welding (SAW) of pipe external seams (multi-wire, up to 5 wires longitudinal seam / 3, Longitudinal seam pipe welding process, Spiral pipe welding process, Planning, development, design and manufacture of special welding systems (customised, Assembly and commissioning of welding systems, Quality assurance of weld seams (Digital Welding System Z5, data/quality recording)
- Materials
- Steel (plate for large-diameter pipes), Metal active gas welding (MAG), Submerged arc welding (SAW)
- Certificates
- QM certificate (details in download area)
- Founded
- 1963
- Industries
- Longitudinal seam pipe mills, Spiral pipe mills, Pipe manufacturing, Large-diameter pipe mills (longitudinal seam pipe mills)
- 01
Engineering
- 02
Design
- 03
Manufacturing
- 04
Assembly
- 05
Commissioning
- 06
After Sales
Welding Processes and Materials
Metal active gas welding (MAG)
Arc welding process with active gas; used in the 1-wire tack welding systems to produce the tack weld prior to SAW welding.
Submerged arc welding (SAW)
Electric fusion welding process under a layer of welding flux with high deposition rate; used in the multi-wire internal and external welding systems for longitudinal and spiral seams.
Steel (plate for large-diameter pipes)
Base material of the large-diameter pipe ends welded in the systems, made from plate.
Location
Essen
DEHeadquarters, development, design, manufacturing, test laboratory
- Materials
- Steel (suitability for large-diameter pipes)
- 1-wire tack welding system (MAG)
- Multi-wire internal welding system (SAW)
- Multi-wire external welding system (SAW)
- Powder supply system
- Ground brush system
- Digital Welding System Z5
Systems and Assemblies
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| MAG tack welding (metal active gas welding) of pipe tack weldsJoining | – | – | – | – | Steel (large-diameter pipe mills) |
| Submerged arc welding (SAW) of pipe internal seams (multi-wire, up to 4 wires longitudinal seam / 3Joining | – | – | – | – | Steel (large-diameter pipe mills) |
| Submerged arc welding (SAW) of pipe external seams (multi-wire, up to 5 wires longitudinal seam / 3Joining | – | – | – | – | Steel (large-diameter pipe mills) |
| Longitudinal seam pipe welding processJoining | – | – | – | – | Steel |
| Spiral pipe welding processJoining | – | – | – | – | Steel |
| Planning, development, design and manufacture of special welding systems (customisedEngineering | – | – | – | – | – |
| Assembly and commissioning of welding systemsAssembly | – | – | – | – | – |
| Quality assurance of weld seams (Digital Welding System Z5, data/quality recording)Testing | – | – | – | – | – |
| Supply of welding power sources and welding consumables (wire-powder combinations)Joining | – | – | – | – | – |
7 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 1-wire tack welding system (MAG tack welding system) | Uhrhan & Schwill Schweißtechnik – Lincoln Electric Digital Welding System Z5 (optional) | – | – | – | Essen (manufacturing) |
| Multi-wire internal welding system (SAW process) | Uhrhan & Schwill Schweißtechnik – Lincoln Electric | – | – | – | Essen (manufacturing) |
| Multi-wire external welding system (SAW process) | Uhrhan & Schwill Schweißtechnik – Lincoln Electric | – | – | – | Essen (manufacturing) |
| Welding systems for large-diameter pipe mills (over 300 installed systems in more than 35 | Uhrhan & Schwill Schweißtechnik – Lincoln Electric | over 300 | – | – | worldwide |
| Powder supply system / welding flux feed and extraction system | Uhrhan & Schwill Schweißtechnik – Lincoln Electric | – | – | – | – |
| Ground brush system for ground current transfer | Uhrhan & Schwill Schweißtechnik – Lincoln Electric | – | – | – | – |
| Laser scanner / seam guidance systems (laser scanner / spur wheel) | Uhrhan & Schwill Schweißtechnik – Lincoln Electric | – | – | – | – |
Additional services
History
- 1963
Founded by the engineers Günter Uhrhan and Heinrich Schwill in Essen as a specialist for tack welding systems (later Uhrhan & Schwill GmbH).
- 1998
Acquisition of Uhrhan & Schwill Schweißtechnik GmbH by Lincoln Electric; expansion of the product range to include welding power sources and welding consumables.