FIELD: process engineering.
SUBSTANCE: invention may be used for recovery of pits in housings of "НШ" or "НШ-У" pumps. Housing well is machined to remove traces of wear. Aluminium alloy "АК9ч" heated to 725…735°C is poured into housing. Punch shaped to housing inner surface is used to stamp fluid alloy for 70…80 s at 140 MPa. Punch motion speed makes 0.2-0.3 m/s. After stamping, wells are bored to preset sizes and surface hardened by micro arc oxidising in alkaline electrolyte.
EFFECT: increased thickness, higher micro hardness and wear resistance.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR RESTORING WELLS OF ALUMINUM-ALLOY HOUSINGS OF GEAR PUMPS | 2002 |
|
RU2236335C2 |
| METHOD OF RECONDITIONING WORNOUT PARTS FROM ALUMINIUM ALLOYS | 2009 |
|
RU2389593C1 |
| METHOD OF RECONDITIONING PARTS FROM ALUMINIUM AND ITS ALLOYS | 2009 |
|
RU2427457C1 |
| DEVICE FOR MICRO-ARC OXIDATION OF GEAR PUMP HOUSING WELLS | 2002 |
|
RU2209259C1 |
| METHOD FOR RESTORING WORN PARTS OF ALUMINUM ALLOYS | 2004 |
|
RU2252122C1 |
| APPARATUS FOR MICROARC OXIDIZING OF WELLS OF HOUSING OF GEAR-TYPE PUMP | 2002 |
|
RU2215831C1 |
| METHOD OF RECONDITIONING PARTS FROM ALUMINIUM ALLOYS | 2012 |
|
RU2482949C1 |
| METHOD FOR RESTORING WORN PARTS OF ALUMINUM AND ITS ALLOYS | 2000 |
|
RU2196035C2 |
| APPARATUS FOR MICROARC APPLYING OF OXIDE COATING ON PRESSURE RACE AND BEARING RACE OF GEAR PUMP | 2000 |
|
RU2190045C2 |
| METHOD OF RECONDITIONING WORN-OUT PARTS | 2012 |
|
RU2486044C1 |
