Racor sanitario tri-clamp — 316L, electropulido a Ra 0,4 µm
Un racor de proceso sanitario en 316L mecanizado completo en un centro de torno-fresado, electropulido interiormente a Ra 0,4 µm y suministrado con certificados de material y registros de acabado.
Especificación de la pieza
- Sector
- Medical Devices
- Proceso
- CNC Turning
- Material
- Stainless 316L
- Tolerancia
- ±0.02 mm
- Acabado
- Electropolished Ra 0.4 µm
- Cantidad
- 500 / year
- Plazo
- 18 working days
Datos del cliente no divulgados por NDA.
Reto
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.
Solución
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.
Resultado
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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