
Control systems and welding machines for resistance and friction welding, developed and manufactured in Hamburg.

Harms & Wende GmbH & Co. KG
Hamburg (Headquarters) · Karlsruhe (Training)New on Amplifa
About Harms & Wende
For over 80 years, Harms & Wende has been developing and manufacturing control systems, medium-frequency inverters and welding systems for resistance welding and friction welding, as well as quality assurance for these processes. The portfolio includes the GeniusMFI, GeniusHWI, Sinius and Filius control systems, the Primus HF product range for resistance spot welding, wire compacting and wire-braze soldering, the iSpot HFG device series for micro welding, friction welding systems of the RSM/RPS series, and power modules for welding currents above 240 kVA. In addition, the company offers the engineering of welding solutions including fully automated special-purpose machines, control cabinet construction, retooling of existing systems, trial welding in its own technology center with transformer station, spare parts service, repairs and training. Headquarters and production are located in Hamburg, with an additional training site in Karlsruhe. Fields of application are primarily the automotive industry, Industrial Solutions and precision micro welding applications.
- Site
- Hamburg
- Processes
- Resistance Welding, Spot Welding, Projection Welding, Micro Welding, Friction Welding / Friction Spot Welding, Seam Welding, Wire-Braze Soldering, Wire Compact Compacting
- Materials
- Electrically conductive materials (general for resistance welding), Resistance Welding, Resistance Spot Welding, Projection Welding, Micro Welding, Friction Welding / Friction Spot Welding, Seam Welding, Wire-Braze Soldering
- Certificates
- Trial welding in the technology center, Quality assurance for welding processes
- Industries
- Automotive, Industrial Solutions, Micro Welding, Resistance Welding, Friction Welding, Micro Welding Applications
- 01
Engineering & Project Planning
- 02
Control Technology & Inverter Manufacturing
- 03
Control Cabinet Construction
- 04
Trial Welding in the Technology Center
- 05
Assembly of Systems and Special-Purpose Machines
- 06
Service, Spare Parts, Repairs, Retooling, Training
Materials & Processes
Resistance Welding
Process for electrically conductive materials based on joule heating at the joint.
Resistance Spot Welding
Economical, robust and dominant variant of resistance welding, among other things for demanding materials in the automotive sector.
Projection Welding
High-performance variant of resistance press welding with advantages in automation.
Micro Welding
Extremely fast processes for a wide range of materials and delicate precision work.
Friction Welding / Friction Spot Welding
Combines the process stability of friction welding with the economical principle of spot welding.
Seam Welding
Resistance welding process for continuous joints, among other things for special applications such as roller seam welding.
Wire-Braze Soldering
Soldering process implementable with the Primus HF product range for cable and joining tasks.
Wire Compact Compacting
Compacting process for wire bundles with the Primus HF product range.
Locations

Hamburg
DEHeadquarters, Development and Production
- Medium-frequency inverter GeniusMFI
- Technology center with transformer station for trial welding
- Control cabinet construction
Karlsruhe
DETraining Site
Products & Systems










Inside the production









Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Resistance WeldingJoining | – | – | – | – | electrically conductive materials |
| Spot WeldingJoining | – | – | – | – | demanding materials (automotive) |
| Projection WeldingJoining | – | – | – | – | – |
| Micro WeldingJoining | – | – | – | – | a wide range of materials |
| Friction Welding / Friction Spot WeldingJoining | – | – | – | – | – |
| Seam WeldingJoining | – | – | – | – | – |
| Wire-Braze SolderingJoining | – | – | – | – | – |
| Wire Compact CompactingJoining | – | – | – | – | – |
| Trial welding in the technology centerTesting | – | – | – | – | – |
| Engineering of welding solutions incl. fully automated special-purpose machinesEngineering | – | – | – | – | – |
| Control cabinet construction (complete control cabinets according to own design or customerAssembly | – | – | – | – | – |
| Retooling / modernization of existing systemsEngineering | – | – | – | – | – |
9 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Medium-frequency inverter / control system GeniusMFI | Harms & Wende Genius | – | – | – | Hamburg |
| GeniusHWI control system | Harms & Wende Genius | – | – | – | – |
| Sinius control system (resistance welding technology) | Harms & Wende Sinius | – | – | – | – |
| Filius control for spot, projection and seam welding joints | Harms & Wende Filius | – | – | – | – |
| Primus HF product range (resistance spot welding, wire compacting, wire-braze soldering) | Harms & Wende Primus HF | – | – | – | – |
| iSpot HFG device series for micro welding | Harms & Wende iSpot HFG | – | – | – | – |
| RSM/RPS friction welding systems | Harms & Wende RSM/RPS | – | – | – | – |
| Power modules for high welding currents (> 240 kVA / 1600 A) | Harms & Wende Powermodule | – | – | – | – |
| XPegasus operating software (for GeniusMFI, GeniusHWI, HWI 28XX, HWI 22XX, Ratia 73) | Harms & Wende XPegasus | – | – | – | – |
Additional services
Quality
In the company's own technology center with transformer station, trial welds are carried out to demonstrate welding quality and process stability on a customer-specific basis. Quality assurance in resistance and friction welding processes has been part of the company's core business for over 80 years.
| Evidence | Hamburg |
|---|---|
| Trial welding in the technology center | |
| Quality assurance for welding processes |
History
- 2026
Anniversary year: 10 years together with China – over 80 years of company tradition.
- 2026
Awarded for the tenth time as "Germany's Customer Champion 2026".