Develops and manufactures components and special-purpose machines for resistance welding, including a welding laboratory, electrode manufacturing and service.
Osmina Welding GmbH
77833 OttersweierNew on Amplifa
About OSMINA
OSMINA is a provider of components and special-purpose machines for resistance welding based in Ottersweier (Baden-Württemberg). The portfolio includes welding heads, welding tongs, compaction modules, welding current controllers, saw-tooth machines and reels, customer-specific manual workstations, and special applications. The company manufactures electrodes as well as spare and wear parts in its own production, including from electrode materials and ceramics, and operates a machine park with three CNC machining centres, lathes, milling and grinding machines. The in-house welding laboratory offers free feasibility analyses, application tests and small-series production. Application areas include, among others, welding carbide teeth onto circular saw blades and saw bands, compacting copper strands, gap welding and battery welding, as well as joining enameled copper wire and electronic components. OSMINA serves industries such as automotive, e-mobility, electronics, renewable energies, medical technology, aerospace, cable assembly and the saw industry.
- Site
- Ottersweier
- Processes
- Resistance welding (spot welding, gap welding/battery welding, step welding), Resistance compacting of strands (compaction modules), Brazing of non-ferrous metals, Thermocompression welding, Hot crimping, Hot bar soldering (HotBar), ACF bonding (HotBar), Hot staking (HotBar)
- Materials
- Non-ferrous metals, Enameled copper wire, Carbide (hard metal), Ceramics, Copper strands, Non-ferrous metals / Copper, Electrode material
- Certificates
- Peel force measurement (test bench), 3D microscopy (KEYENCE), Metallographic sections, Process monitoring (position measuring probes, QST)
- Industries
- Automotive, E-Mobility, Electronics, Renewable Energies, Medical, Aerospace
- 01
Feasibility analysis and application testing in the welding laboratory
- 02
Consulting on electrode materials and geometries
- 03
Concept development and design
- 04
In-house manufacturing of components, electrodes and spare parts (CNC machining)
- 05
Assembly and commissioning of the systems
- 06
Service, spare parts availability and training
Materials & Processes
Non-ferrous metals / Copper
Focus of the welding applications, including enameled copper wire (e.g. stators) and copper strands (cross-sections 1–10 mm²).
Carbide (hard metal)
Welding of carbide cylinders onto saw bands and circular saw blades.
Ceramics
In-house production of ceramic parts as spare and wear components.
Electrode material
Electrode material and common electrodes in stock, of own manufacture.
Locations
Ottersweier
DEHeadquarters with laboratory, machine park and production
- Lot size
- Small series in the laboratory
- Materials
- Electrode material, ceramics, non-ferrous metals, carbide (hard metal)
- 3× CNC machining centre
- Lathe
- Grinding machine
- Milling machine
- Band saws
- Pillar drilling machines
- 3D microscope (KEYENCE)
- Test bench for peel force measurement
- Grinding machine for metallographic sections
- Fully automatic welding system ASKB 2024 (circular saw blades)
- Fully automatic welding system ASSB 2024 (saw bands)
Products & Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Resistance welding (spot welding, gap welding/battery welding, step welding)Joining | – | – | – | – | Non-ferrous metals, Metals, Enameled copper wire, Carbide (hard metal), Electronic components |
| Resistance compacting of strands (compaction modules)Joining | Repeatability < ±0.02 mm | Compacting length up to 15 mm (SVKM-E) × Compacting width 0.00 to 3 mm | – | – | Copper strands (cross-sections 1 to 10 mm², others on |
| Brazing of non-ferrous metalsJoining | – | – | – | – | Non-ferrous metals |
| Thermocompression weldingJoining | – | – | – | – | – |
| Hot crimpingJoining | – | – | – | – | – |
| Hot bar soldering (HotBar)Joining | – | – | – | – | – |
| ACF bonding (HotBar)Joining | – | – | – | – | – |
| Hot staking (HotBar)Joining | – | – | – | – | – |
| Welding of carbide onto saw bands or circular saw bladesJoining | – | Saw bands width 12 to 130 mm × Saw blades diameter 100 to 600 mm × Thickness 0.5 to 3.5 mm (saw blades) / | – | – | Carbide (hard metal) |
| Peel force measurement (test bench)Testing | – | – | – | – | – |
| Feasibility analyses in the welding laboratory, production of small seriesTesting | – | – | – | – | – |
| Special-purpose machine building (focus on resistance welding)Engineering | – | – | – | – | – |
| In-house manufacturing of electrodes, spare and wear partsMachining | – | – | – | – | Electrode material, Ceramics |
26 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC machining centre | – | 3 | – | – | Ottersweier |
| Lathe | – | – | – | – | Ottersweier |
| Grinding machine | – | – | – | – | Ottersweier |
| Milling machine | – | – | – | – | Ottersweier |
| Band saws | – | – | – | – | Ottersweier |
| Pillar drilling machines | – | – | – | – | Ottersweier |
| 3D microscope | KEYENCE | 1 | – | – | Ottersweier (laboratory) |
| Test bench for peel force measurement | – | – | – | – | Ottersweier (laboratory) |
| Grinding machine for metallographic sections | – | – | – | – | Ottersweier (laboratory) |
| Fully automatic welding system for circular saw blades | OSMINA ASKB 2024 | – | Saw blades Ø 100–600 mm, thickness 0.5–3.5 mm; dimensions 2300 x 1500 x 2200 mm | 2024 | Ottersweier |
| Fully automatic welding system for saw bands | OSMINA ASSB 2024 | – | Saw bands width 12–130 mm, thickness 0.8–1.6 mm; dimensions 2200 x 2300 x 1500 mm | 2024 | Ottersweier |
| Welding head (electric) | OSMINA OSK-25 E | – | Working stroke 25 mm, force 45–200 N | – | – |
| Welding head (pneumatic) | OSMINA OSK-25 P | – | Working stroke 25 mm, force 45–200 N | – | – |
| Pneumatic double welding head | OSMINA OSK-25 DP | – | Working stroke 25 mm, force 45–200 N | – | – |
| Follower unit (diaphragm) | OSMINA OSK-25 NPM | – | Electrode stroke 4 mm, force 40–200 N | – | – |
| Follower unit (spring) | OSMINA OSK-25 NPF | – | Electrode stroke 4 mm, force 10–160 N | – | – |
| Welding head | OSMINA KWA-6 | – | Electrode stroke 5 mm, force 40–240 N, 6 kA | – | – |
| Welding head | OSMINA KWA-8 | – | Electrode stroke 5 mm, working stroke 25 mm, force 10–400 N, 10 kA | – | – |
| Welding tong | OSMINA OSZ-25 / OSZ-40 / OSZ-63 | – | – | – | – |
| Compaction module (electric) | OSMINA SVKM-E | – | Cross-sections 1–10 mm², force 200–2000 N | – | – |
| Compaction module (mechanical) | OSMINA SVKM-M | – | Cross-sections 1–10 mm², force 200–2000 N | – | – |
| Double compaction module (mechanical) | OSMINA SVDKM-M | – | Cross-sections 1–10 mm², force 200–2000 N | – | – |
| Welding current controller (inverter) | Harms & Wende Primus HF (HFI/HFT) | – | – | – | – |
| Welding current controller (capacitor discharge) | Harms & Wende iSpot-HFG | – | – | – | – |
| Welding inverter (medium frequency) | Harms & Wende Genius HWI (HWI 3×40, 3×45, 3×60) | – | – | – | – |
| Manual workstations (customer-specific) | OSMINA | – | – | – | – |
Additional services
Quality & Testing Equipment
The welding laboratory offers application tests, feasibility analyses and peel force measurement; the equipment includes a 3D microscope from KEYENCE, various microscopes and a grinding machine for metallographic sections. Position measuring probes and process monitoring systems from partner QST ensure process control.
| Evidence | Ottersweier |
|---|---|
| Peel force measurement (test bench) | |
| 3D microscopy (KEYENCE) | |
| Metallographic sections | |
| Process monitoring (position measuring probes, QST) |
History
- 2023-08
End of the traditional company EKS Keller
- 2023
Acquisition of EKS Keller's know-how, experience and assets via asset deal; founding/continuation as OSMINA
- 2024
Presentation of the fully automatic welding systems ASKB 2024 (circular saw blades) and ASSB 2024 (saw bands)