Castings in grey cast iron and spheroidal graphite iron for single parts, small series and prototypes
Nehr + Saurer GmbH
Ottostraße 10, 73037 GöppingenNew on Amplifa
About Nehr + Saurer GmbH
Nehr + Saurer GmbH is an established iron foundry with a tradition dating back to 1919. The company specialises in the production of castings in various grey cast iron and spheroidal graphite iron grades. Production covers both conventional hand moulding and modern machine processes such as the ColdBox core shooting machine. The delivery range extends from single parts and prototypes to small series with a unit weight of 0.5 kg to approx. 2500 kg. Cores are produced using the CO² water-glass process and furan resin sand. In addition to production in Göppingen, a separate QA building guarantees maximum precision through ultrasonic, magnetic particle and Brinell testing. The main areas of application are mechanical engineering, the automotive industry and ornamental casting restoration.
- Site
- Göppingen
- Processes
- Sand casting (hand moulding / machine moulding), 3D-printed sand moulds (3D printer for moulds), Core production ColdBox process, Core production CO² water-glass process (by hand), Core production furan resin-bonded sand (by hand), Melting operation cast iron (melting and casting), 3D scanning and CAD design of patterns, Shot blasting (steel blasting medium)
- Materials
- Cast iron with lamellar graphite (grey cast iron), Spheroidal graphite cast iron, Cast iron with vermicular graphite, Duktil Plus cast iron, High-silicon spheroidal graphite cast iron
- Certificates
- ISO 9001:2015, DIN EN ISO 9712:2012, non-destructive testing, ultrasonic testing Level 2, ISO 9001
- Founded
- 1919
- Industries
- Mechanical engineering, Automotive / Replica, Ornamental casting / Restoration, Automotive / Vintage cars / Replica
- 01
Design and 3D scanning
- 02
Pattern making
- 03
Core production (CO₂ water-glass/furan resin/ColdBox)
- 04
Melting and casting operation (3 t induction crucible furnace)
- 05
Post-processing (shot blasting, deburring)
- 06
Material and non-destructive testing
- 07
Acceptance and delivery
Locations
Göppingen
DEProduction, administration, quality assurance
- Part weight / size
- 0.1 kg - 2.5 t
- Lot size
- Single parts, prototypes, small series
- ColdBox core shooting machine (Laempe LL20)
- Mains-frequency induction crucible furnace (3 t)
- 3D scanner
- 3D printer (sand moulds)
- Microscope
- Automatic grinding and polishing machine
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Sand casting (hand moulding / machine moulding)Casting | – | – | 0.1 kg – 2.5 t | Single parts, prototypes – Small series | EN-GJL-200, EN-GJL-250, EN-GJL-300, EN-GJS-350-22-LT, EN-GJS-400-15, EN-GJS-400-18-LT, EN-GJS-450-10, EN-GJS-500-7, EN-GJS-600-3, EN-GJS-700-2, EN-GJV-300, EN-GJV-400, EN-GJV-500, EN-GJS-600-10, EN-GJS-450-18, EN-GJS-500-14, GJS-XSiMo 5.1 |
| 3D-printed sand moulds (3D printer for moulds)Casting | – | 75 cm × 45 cm × 35 cm | 42 kg | – | Cast iron |
| Core production ColdBox processCasting | – | – | – | – | Moulding sand |
| Core production CO² water-glass process (by hand)Casting | – | – | – | – | Moulding sand |
| Core production furan resin-bonded sand (by hand)Casting | – | – | – | – | Moulding sand |
| Melting operation cast iron (melting and casting)Casting | – | – | – | – | Grey cast iron, Spheroidal graphite cast iron |
| 3D scanning and CAD design of patternsEngineering | – | – | – | – | – |
| Shot blasting (steel blasting medium)Surface | – | – | – | – | Cast iron |
| Fettling / deburring / removal of gating systemsSurface | – | – | – | – | Cast iron |
| Ultrasonic testing (non-destructive, DIN EN ISO 9712:2012 Level 2)Testing | – | – | – | – | – |
| Magnetic particle testing (crack testing)Testing | – | – | – | – | – |
| Hardness testing according to BrinellTesting | – | – | – | – | – |
| Material testing: micrographs, thermal analysis, spectral analysis, temperature measurement, sampleTesting | – | – | – | – | – |
| Inspection certificate 3.1 according to EN 10204:2004Testing | – | – | – | – | – |
7 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| ColdBox core shooting machine | Laempe LL20 | 1 | – | – | Göppingen |
| Mains-frequency induction crucible furnace | 3t | 1 | – | – | Göppingen |
| Hand blast cabinet | – | 1 | – | – | Göppingen (QA building) |
| 3D scanner | – | – | – | – | Göppingen |
| 3D printer (sand moulds) | – | – | – | – | Göppingen |
| Microscope (materials laboratory) | – | – | – | – | Göppingen |
| Automatic grinding and polishing machine | – | – | – | – | Göppingen |
Additional services
Reference customers
Quality Assurance
Quality assurance takes place in a separate part of the building through a materials laboratory. For inspection, micrographs, thermal and spectral analyses are carried out. Non-destructive testing methods include ultrasonic testing (DIN EN ISO 9712:2012, Level 2) and magnetic particle testing. This is supplemented by hardness testing according to Brinell.
| Evidence | Göppingen |
|---|---|
| ISO 9001 |
Company History
- 1919
Otto Saurer purchased the existing iron foundry in Göppingen (company Kuhn and Saurer, flat irons and machine parts).
- 1952
Helmut Saurer took over the company. In 1966, a foundry was built in the Göppingen-Ursenwang industrial area.
- 2004
Gerhard Saurer and Jürgen Nehr run the iron foundry under the name Nehr + Saurer GmbH.
- 2012
Sascha Nehr joined the company. The annex building for the QA department was set up and the company was certified according to ISO 9001:2008.
- 2017
Sascha Nehr was appointed deputy managing director.
- 2019
Simon Nehr joined as assistant to the management.
- 2020
Gerhard Saurer ended his active work in the company.
- Jetzt
Led by Jürgen and Sascha Nehr; Simon Nehr serves as deputy managing director.