Technical sales and technology consulting for forming, machining, injection moulding and spring technology
Lang & Dähn GbR
Wiehl-Marienhagen (sales office) · BempflingenNew on Amplifa
About Lang & Dähn
Lang & Dähn GbR is an owner-managed, independent manufacturers' representative based in Wiehl-Marienhagen with a second location in Bempflingen. Since 2009, the company has acted as an interface between industrial customers and specialised industrial partners, delivering technical solutions from the first development stage through to production maturity. The range of services covers cold-formed parts, turned parts, milled parts, pressed, stamped and drawn parts, plastic injection moulded parts with hybrid technology, forged parts made of aluminium and steel, as well as special and standard springs and wire-formed parts in materials ranging from stainless steel and beryllium copper to special alloys such as Inconel® or Elgiloy®. In addition to technical sales, Lang & Dähn offers technology consulting, project management, analysis and technical evaluation of processes and materials as well as product cost optimisation. Customers come, among others, from the automotive and commercial vehicle industry, engine, gearbox and brake technology, mechanical and apparatus engineering and renewable energy technology.
- Site
- Wiehl-Marienhagen
- Processes
- Cold-formed parts (cold extrusion, 2-7 forming stages), Thread and knurl rolling (flat die and round rolling), Internal thread forming, Turned parts (single-spindle automatic lathes), Turned parts (multi-spindle automatic lathes), Swiss-type turning, Turning of chuck and infeed parts, Ring turning
- Materials
- Structural, heat-treatable and case-hardening steels, Stainless steels, Hardening and non-hardening aluminium alloys, Copper alloys, Nickel alloys, Free-cutting steel, Stainless steel, Non-ferrous metal alloys
- Certificates
- IATF 16949:2016, DIN EN ISO 9001:2015, ISO 14001:2015, ISO 50001:2011, ISO 9001, IATF 16949, ISO 14001, ISO 50001
- Founded
- 2009
- Employees
- 2–10
- Industries
- Automotive & commercial vehicle industry, Engine, gearbox & brake technology, Agricultural & construction machinery technology, Electrical & electronics industry, Construction & building hardware industry, Specialist retail
- 01
Technology consulting and process/material analysis
- 02
Project management
- 03
Placement with specialised industrial partners
- 04
Manufacturing by industrial partners
- 05
Quality assurance (incl. 100% feature inspections)
- 06
Assembly of component groups and delivery
Locations
Wiehl-Marienhagen
DEHeadquarters, sales office
Bempflingen
DELocation
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Cold-formed parts (cold extrusion, 2-7 forming stages)Forming | – | Shank length 335 mm × Wire diameter Ø30.0 mm | – | – | Structural, heat-treatable and case-hardening steels, stainless steels, hardening and non-hardening aluminium alloys, copper alloys, nickel alloys |
| Thread and knurl rolling (flat die and round rolling)Forming | – | up to Ø20 mm | – | – | – |
| Internal thread formingForming | – | up to M20 | – | – | – |
| Turned parts (single-spindle automatic lathes)Machining | – | up to Ø71 mm | – | Small series – Large series | Free-cutting steel, stainless steel, non-ferrous alloys, plastics, special materials |
| Turned parts (multi-spindle automatic lathes)Machining | – | up to Ø32 mm | – | – | Free-cutting steel, stainless steel, non-ferrous alloys, plastics, special materials |
| Swiss-type turningMachining | – | up to Ø32 mm | – | – | Free-cutting steel, stainless steel, non-ferrous alloys, plastics, special materials |
| Turning of chuck and infeed partsMachining | – | up to Ø250 mm | – | – | – |
| Ring turningMachining | – | Ø1 mm - Ø6 mm | – | – | – |
| CNC turning and machining centresMachining | – | – | – | – | – |
| Thread rolling and forming (chipless)Forming | – | – | – | – | – |
| Machining | – | Maximum machining length 1,000 mm | – | – | – |
| Vibratory finishing and polishingSurface | – | – | – | – | – |
| Pressed, stamped and drawn parts (stamping)Forming | – | Tool length max. 2500 mm | – | – | – |
| Drawn parts (deep drawing)Forming | – | – | – | – | Coil 0.5 mm to 10 mm material thickness |
| Welding robot systems (with automatic turntable)Joining | – | Component lengths up to 1800 mm | – | – | – |
| Laser and resistance weldingJoining | – | – | – | – | – |
| Laser cuttingMachining | – | – | – | – | – |
| Laser engravingSurface | – | – | – | – | – |
| Assembly manufacturingAssembly | – | – | – | – | – |
| Aluminium forged parts (cold and hot formed)Forming | – | – | 0.02 kg – 1.5 kg | – | Aluminium |
| Steel die forgingForming | – | – | up to 10 kg piece weight | – | Steel |
| Plastic injection moulded parts / hybrid technologyPlastics | – | – | – | – | Plastics |
| Forming | – | Material widths 6.35 mm - 31.75 mm | – | – | Beryllium copper, brass, spring steel wire DIN EN 10270-1, valve spring wire DIN EN 10270-2, chromium-silicon alloys, chromium-vanadium alloys, Elgiloy®, Hastelloy®, Inconel®, Monel®, carbon steel, cold drawn, spring bronze, composite plastics, stainless steel DIN EN 10270-3, stainless steel (e.g. 1.4568, 1.4401, 1.4404), spring steels per AISI, JIS |
| ElectropolishingSurface | – | – | – | – | – |
| Shot peeningSurface | – | – | – | – | – |
| Powder coatingSurface | – | – | – | – | – |
| PassivationSurface | – | – | – | – | – |
| Assembly of component groupsAssembly | – | – | – | – | – |
| Heat treatmentHeat treatment | – | – | – | – | – |
| Testing | – | – | – | – | – |
| Technology consulting / project management / technical salesEngineering | – | – | – | – | – |
28 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Double-pressure and multi-stage presses (2-7 forming stages) | – | – | Wire diameter Ø0.8 - Ø30.0 mm, shank length max. 335 mm, pressing force max. 380 t | – | Industrial partner (Lang & Dähn manufacturers' representation) |
| Flat die and round rolling machines | – | – | up to Ø20 mm | – | Industrial partner |
| Special machines for internal thread forming | – | – | up to M20 | – | Industrial partner |
| Eccentric and hydraulic presses | – | – | – | – | Industrial partner |
| Cam-controlled and CNC-controlled secondary turning automats | – | – | max. clamping Ø25 mm | – | Industrial partner |
| Through-feed and plunge grinding machines | – | – | max. Ø35 mm | – | Industrial partner |
| Drilling automats | – | – | Axial and transverse drilling | – | Industrial partner |
| Milling automats | – | – | head-side and shank-side slot milling | – | Industrial partner |
| Switch-drum automats | – | – | – | – | Industrial partner |
| Single-spindle automatic lathes (CNC and cam-controlled) | – | – | up to Ø71 mm | – | Industrial partner |
| Multi-spindle automatic lathes (CNC and cam-controlled) | – | – | up to Ø32 mm | – | Industrial partner |
| Swiss-type automatic lathes | – | – | up to Ø32 mm | – | Industrial partner |
| Automatic lathes for chuck and infeed parts | – | – | up to Ø250 mm | – | Industrial partner |
| Ring turning automats | – | – | Ø1 mm - Ø6 mm | – | Industrial partner |
| Switch-plate automatic lathes | – | – | up to Ø42 mm | – | Industrial partner |
| CNC turning and machining centres | – | – | – | – | Industrial partner |
| Opto-electronic inspection and sorting machines | – | – | – | – | Industrial partner |
| CNC milling machining centres | – | – | Maximum machining length 1,000 mm | – | Industrial partner |
| Conventional milling and drilling machines | – | – | – | – | Industrial partner |
| Surface and rotary table grinding machines | – | – | – | – | Industrial partner |
| Stamping presses | – | – | 50 t - 400 t, coil 0.5 mm to 10 mm, tool length max. 2500 mm | – | Industrial partner |
| Drawing presses | – | – | 50 t - 320 t | – | Industrial partner |
| Welding robot systems with automatic turntable | – | – | Component lengths up to 1800 mm | – | Industrial partner |
| Laser and resistance welding systems | – | – | – | – | Industrial partner |
| Forming presses | – | – | up to 650 t | – | Industrial partner |
| Forging hammers (hot forming) | – | – | 0.6 t - 5 t impact force | – | Industrial partner |
| Precision saws and cutting machines | – | – | – | – | Industrial partner |
| CNC turning, milling, drilling, grinding and broaching machines | – | – | – | – | Industrial partner |
Additional services
Quality
The manufacturing industrial partners perform 100% feature inspections both mechanically and optoelectronically and use eddy-current and ultrasonic testing as well as opto-electronic inspection and sorting machines. Product groups are certified according to IATF 16949, ISO 9001, ISO 14001 and ISO 50001.
| Evidence | Industrial partners (product groups) |
|---|---|
| ISO 9001 | |
| IATF 16949 | |
| ISO 14001 | |
| ISO 50001 |
History
- 2009
Founding and market launch as an owner-managed manufacturers' representative