FIELD: process engineering.
SUBSTANCE: invention relates to metal forming and can be used in production of steel piston compression and oil wiper rings from wire. Wire is preheated to temperature 250-300° higher than Ac3, strain-hardened in the range of martensitic conversion temperatures MH - MK. For this, wire is drawn through profiling drawing rolls with squeezing. Produced profile is coiled onto mandrel and thermally fixed at 350-400°C for one hour. Coiled profile on mandrel is cut into separate rings. Rings are fitted in cylinder liner and subjected to thermal stabilisation at 560-580° C for 30 minutes.
EFFECT: possibility to produce complex-profile steel rings with high operating properties.
2 cl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR MANUFACTURING OF STEEL OIL-SCRAPER PISTON RINGS | 2008 |
|
RU2380210C2 |
| STEEL OIL PISTON RINGS MANUFACTURING METHOD | 2005 |
|
RU2318645C2 |
| METHOD OF MANUFACTURE OF STEEL COMPRESSION PISTON RINGS | 2007 |
|
RU2341362C1 |
| METHOD FOR MAKING PISTON RING | 1998 |
|
RU2132763C1 |
| METHOD FOR MAKING PISTON RINGS AND APPARATUS FOR WINDING HELIX OF STEEL SECTION | 2002 |
|
RU2219036C2 |
| STRENGTHENING METHOD OF STEEL PISTON RING SURFACES | 2008 |
|
RU2386726C1 |
| METHOD FOR MAKING CHROME-PLATED PISTON RINGS | 2000 |
|
RU2182064C2 |
| METHOD FOR MAKING TANGENTIAL EXPANDERS FOR OIL PISTON RINGS | 0 |
|
SU691231A1 |
| METHOD AND DEVICE FOR HARDENING PROFILE BAND FOR PISTON RINGS | 1998 |
|
RU2147041C1 |
| METHOD OF PRODUCING TANGENTIAL EXPANDERS OF ALL-BENT STRUCTURE WITH LOCK | 0 |
|
SU507981A1 |
