Raccordo sanitario tri-clamp — 316L, elettrolucidato a Ra 0,4 µm
Un raccordo di processo sanitario in 316L lavorato completo su centro di tornitura-fresatura, elettrolucidato internamente a Ra 0,4 µm e fornito con certificati materiale e registrazioni di finitura.
Specifica del particolare
- Settore
- Medical Devices
- Processo
- CNC Turning
- Materiale
- Stainless 316L
- Tolleranza
- ±0.02 mm
- Finitura
- Electropolished Ra 0.4 µm
- Quantità
- 500 / year
- Tempo di consegna
- 18 working days
Dati del cliente non divulgati per NDA.
Sfida
The part is used in a pharmaceutical fluid path, so the internal surface must be free of crevices, tool marks and embedded iron. The customer had been buying a welded fabrication that required boroscope inspection of every weld and still produced occasional rejects at validation.
Soluzione
We machined the fitting complete from solid 316L bar, eliminating the weld entirely. Internal surfaces were finish-bored with a polished carbide insert to Ra 0.8 µm, then electropolished to ASTM B912 to reach Ra 0.4 µm and restore the passive layer. Parts were cleaned in a multi-stage ultrasonic line with DI water rinse and double-bagged in a controlled area.
Risultato
Weld inspection was removed from the process entirely. Internal Ra measures consistently between 0.32 and 0.38 µm, comfortably inside the 0.4 µm specification, and validation now passes on the first article. Unit cost fell 17 % despite starting from solid bar, because the welding, boroscope and rework operations disappeared.
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