As the internal toolmaker and 100% subsidiary of the Saint-Gobain group, SEVA has an integrated foundry specializing in the casting of technical parts in stainless steels, refractory steels, high-alloyed steels, nickel-based alloys, cobalt-based alloys and superalloys. With an integrated metallurgy laboratory, we develop and produce our own grades according to our customers' requirements.
Specialty
Turnkey projects, from the study of the foundry to the assembly through machining, all in an integrated digital chain.
Manufacturing
Characteristics of parts
Mini | Maxi* | |
Unit weight (kg) | 0,1 | 2 000 |
Length (mm) | 10 | 2 000 |
Width (mm) | 10 | 1 000 |
Diameter (mm) | 10 | 1 200 |
*Beyond the maximum: please contact us.
Alloys
- Stainless steels (304, 316), low carbon (304L, 316L),
special stainless steels resistant to abrasion and/or seizing, - High-alloyed steels (25-20, 18-10, duplex, 17-4 PH),
- Refractory nickel-based alloys (G-NiCr28W, GX70Ni-CrW55-30-7),
- Self-lubricating nickel-based alloy (ASTM A494 Gr.CY5SnBiM),
- Cobalt-based alloys,
- Nickel cast iron (Ni-hard, Ni-resist)
Types of parts produced
Special process equipment, die forms, pump elements, molds, tools, impellers, standard round bars and bushings, etc...
Lot sizes
Production quantities can vary from single parts and small to medium series.
Special process: Hyperquenching amorphous metal fibers.

Design office resources
Integrated design office
Methods department, metallurgy laboratory, design, simulation tools, calculations, tests.
Softwares
Catia V5 R 27, Solidworks 2020, Magma V5, NC Simul, VX inspect, VX Model, Thermocalc.
Foundry resources
Casting process
Gravity casting in sand molds.
Patterns production
Integrated & subcontracted.
Molding and core-making methods
Manual and semi-mechanized, cold box process, 3D printed sand molding.
Melting capacities
6 MF induction furnaces of latest generation with capacities ranging from 600 kg to 1800 kg.
Finishing
- Manual, -
- Automatic (robotized cell),
- Cobotized.
Surface treatments
Shot-blasting, sandblasting, chrome-plating, polishing, thermal degreasing, scouring, etc...
Thermal treatments
2 furnaces with air quenching.



Machining resources
Computer Numerical Control (CNC), high speed, electro-erosion, milling, 3-axis and 5-axis turning, multifunctional and robotized machining centers. Parts up to 30 tons and 4 meters in length.

Controls
Dimensional (conventional, three-dimensional, 3D scanning), structural (macrography, micrography (SEM)), NDT (roughness, liquid penetrant testing (LPT), US, radiography, waterproofing), spectrometry, mechanical controls (traction, low and high temperature creep), compression, shear, hardness, etc...