Famille de blocs hydrauliques — perçages croisés, ébavurés, testés à 350 bar
Une famille de quatre corps de vanne en aluminium à canaux internes sécants, ébavurés intérieurement et testés en pression à 350 bar avant expédition.
Spécification de la pièce
- Secteur
- Industrial Machinery
- Procédé
- CNC Milling
- Matière
- Aluminium 6061-T6
- Tolérance
- ±0.02 mm
- Finition
- Clear anodised, ground sealing faces
- Quantité
- 800 / year
- Délai
- 20 working days
Identité du client non divulguée (NDA).
Problématique
Intersecting cross-drilled passages leave burrs exactly where they cannot be reached with a hand tool, and a burr that breaks loose in a hydraulic circuit destroys the valve it feeds. The customer had experienced two field failures traced to internal debris.
Solution
We redesigned the drilling sequence so intersections are formed in a controlled order, then added thermal deburring for the internal passages and a high-pressure flush with particle counting on the effluent. Every body is hydrostatically tested to 350 bar with the test record supplied, and sealing faces are ground to 0.005 mm flatness.
Résultat
Particle counts now pass ISO 4406 18/16/13 on every batch. There have been no field failures in three years of supply. The pressure test record accompanies each shipment, which removed an incoming inspection step at the customer.
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