Ultra-precision machining of complex components for aerospace, turbine manufacturing and the energy industry.
PRÄWEST PRÄZISIONSWERKSTÄTTEN Dr.-Ing. Heinz-Rudolf Jung GmbH & Co. KG
BremenNew on Amplifa
About PRÄWEST
Founded in 1945, PRÄWEST manufactures ultra-precise, complex components in Bremen by milling, turning and grinding from aluminium, titanium, IMI 834, Inconel/Waspaloy, Nimonic-Udimet, 17-4 PH and other stainless and heat-resistant alloys. The focus is on simultaneous 5-axis milling of parts up to 2500 mm in diameter and up to 15 t in weight; the raw material weight is limited to a maximum of 11 t. The machine park comprises more than 100 CNC machines and around 24 robots, including 5-axis milling machines, mill-turn machines, NC lathes, 5-axis grinding machines, EDM machines, vibropolishing machines and additive manufacturing machines. Products include, among others, structural parts for Airbus aircraft models, impellers and blisks, turbine and compressor blades as well as turbine casings. Customers come from aerospace, turbine manufacturing, vacuum technology, turbocharger production, and the energy and oil & gas industries; in 2018 the company received recognition from Rolls-Royce. NC programming is performed with CADRA, CATIA V4/V5, Concepts NREC MAX and TS35/TS85.
- Site
- Bremen
- Processes
- 5-axis milling (simultaneous 5-axis milling of complex parts), Turning (horizontal and vertical CNC lathes), Grinding (including 5-axis NC grinding, tool grinding), Conventional milling, 4-axis NC milling, 3-axis NC milling, EDM (electrical discharge machining), Vibropolishing
- Materials
- Aluminium, Titanium, IMI 834, Inconel, Inconel 718, Waspaloy, Nimonic-Udimet, 17-4 PH
- Certificates
- ISO 9001, EN 9100 / AS9100C / JISQ 9100, ISO 14001, ISO 50001
- Founded
- 1945
- Industries
- Aerospace, Turbine manufacturing (stationary and aviation), Organic Rankine Cycle, Vacuum technology, Turbochargers, Energy industry
- 01
NC programming (CADRA, CATIA, Concepts NREC)
- 02
5-axis milling / turning / grinding
- 03
EDM and vibropolishing
- 04
Additive manufacturing
- 05
3D measurement with Zeiss coordinate measuring machines
Materials & Processes
Simultaneous 5-axis milling
Complex parts up to Ø 2500 mm and 15 t in weight for all industries.
CNC turning (horizontal/vertical)
Machining of rotationally symmetric components made of aluminium, titanium, stainless steel and heat-resistant alloys.
5-axis NC grinding / tool grinding
Fine machining of demanding contours including tool grinding.
Electrical discharge machining
Erosive machining of difficult-to-machine materials.
Vibropolishing
Surface finishing of precision parts.
Additive manufacturing
Production of additively manufactured components, among others in the AMB2S project (Additive Manufactured BLISK to Sky).
Aluminium
Structural parts and blisks for aerospace.
Titanium / IMI 834
High-strength parts such as torsion cells and vane rings for aviation.
Inconel / Waspaloy / Nimonic-Udimet
Heat-resistant alloys for turbine blades, casings and compressor impellers.
17-4 PH (stainless steel)
Stainless precipitation-hardening steel, among other things for shrouded impellers.
Locations
Bremen
DEProduction and administration
- Part weight / size
- up to Ø 2500 mm, up to 15 t
- Materials
- Aluminium, titanium, Inconel, stainless steel, heat-resistant alloys
- 5-axis NC milling machines
- 5-axis mill-turn machines
- 4-axis and 3-axis NC milling machines
- Horizontal and vertical NC lathes
- 5-axis NC grinding machines
- EDM machines
- Vibropolishing machines
- Additive manufacturing machines
- ca. 24 robots
- 18 Zeiss CNC coordinate measuring machines
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| 5-axis milling (simultaneous 5-axis milling of complex parts)Machining | – | Ø 2500 mm | 15 t (machined part) / 11 t | – | Aluminium, Titanium, IMI 834, Inconel / Waspaloy, Nimonic-Udimet, 17-4 PH, Stainless steels, Heat-resistant alloys |
| Turning (horizontal and vertical CNC lathes)Machining | – | – | – | – | Aluminium, Titanium, Inconel, 17-4 PH, Stainless steel, Heat-resistant alloys |
| Grinding (including 5-axis NC grinding, tool grinding)Machining | – | – | – | – | Aluminium, Titanium, IMI 834, Inconel / Waspaloy, Nimonic-Udimet, 17-4 PH, Stainless steels, Heat-resistant alloys |
| Conventional millingMachining | – | – | – | – | – |
| 4-axis NC millingMachining | – | – | – | – | – |
| 3-axis NC millingMachining | – | – | – | – | – |
| EDM (electrical discharge machining)Machining | – | – | – | – | – |
| VibropolishingSurface | – | – | – | – | – |
| Additive manufacturingAdditive | – | – | – | – | – |
| NC programming (CADRA PC-APT, CATIA V4/V5, MAX5/MAX-SI/MAX-AB, TS35/TS85)Engineering | – | – | – | – | – |
| Quality inspection with CNC coordinate measuring machines (Zeiss)Testing | – | – | – | – | – |
| Assembly/robot-assisted handling (ca. 24 robots)Assembly | – | – | – | – | – |
14 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 5-axis NC milling machines | – | "more than | Parts up to Ø 2500 mm, up to 15 t | – | Bremen |
| 5-axis mill-turn machines | – | – | – | – | Bremen |
| 4-axis NC milling machines | – | – | – | – | Bremen |
| 3-axis NC milling machines | – | – | – | – | Bremen |
| Conventional milling machines | – | – | – | – | Bremen |
| Robots | – | ca. 24 | – | – | Bremen |
| Horizontal NC lathes | – | – | – | – | Bremen |
| Vertical NC lathes | – | – | – | – | Bremen |
| Conventional lathes | – | – | – | – | Bremen |
| 5-axis NC grinding machines | – | – | – | – | Bremen |
| Zeiss CNC coordinate measuring machines | Zeiss | 18 (Qualit | – | – | Bremen |
| EDM machines | – | – | – | – | Bremen |
| Vibropolishing machines | – | – | – | – | Bremen |
| Additive manufacturing machines | – | – | – | – | Bremen |
Additional services
Reference customers
Quality
The quality department is equipped with 18 Zeiss CNC coordinate measuring machines. The management system is certified to ISO 9001, EN 9100/AS 9100C, ISO 14001 and ISO 50001.
| Evidence | Bremen |
|---|---|
| ISO 9001 | |
| EN 9100 / AS9100C / JISQ 9100 | |
| ISO 14001 | |
| ISO 50001 |
History
- 1945
Foundation of PRÄWEST; dynamic development ever since.
- 2018
Successful certification/recognition by Rolls-Royce.