Ductile iron castings for railway vehicle suspension. Casting and CNC machining are done within one group, so castability and machinability are reviewed together before tooling is made.
Ductile iron air spring seats for railway vehicle suspension. Mounting faces and holes machined to drawing, checked on CMM.
Tensile strength, hardness and graphite nodularity verified in house, with a material certificate supplied.
| Dimensions | CMM measurement |
|---|---|
| Chemical Composition | Spectrometer |
| Strength & hardness | Tensile tester, hardness tester |
| Microstructure | Metallographic microscope |
| Materials | Ductile iron FCD450 – FCD550 （ASTM A536） |
|---|---|
| Part weight | 0.2 – 200 kg |
| Minimum Order Q'ty | From 100 pcs |
| Process | Casting, CNC machining, surface treatment, export packing |
| Documents | Material certificate, dimensional inspection report |
| Certification | ISO 9001 |