FIELD: metallurgy.
SUBSTANCE: surface is treated with compressed scanning arc of direct action in argon. Also surface of forming rolls is strengthened with a pulse arc at current power 300-250 A, voltage 18-30 V superposing strips along spiral line at rate of arc travel along surface 1.0-1.3 m/min. A gap of 10-12 mm is maintained between a tungsten electrode and strengthened surface of the roll. Notably, electrode and strengthened surface of the roll are protected from oxidising with argon at its consumption 600-700 l/h.
EFFECT: upgraded quality of strengthened layer, raised resistance and operability of forming rolls.
2 tbl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PREPARING ROLLS FOR OPERATION DURING CAMPAIGN | 0 |
|
SU1678474A1 |
| METHOD OF THE THERMAL TREATMENT OF THE FORMING ROLLERS | 2005 |
|
RU2298043C1 |
| PROCEDURE FOR SURFACE HARDENING CYLINDER ITEMS OF HARDENABLE ALLOYS | 2010 |
|
RU2431684C1 |
| METHOD FOR OBTAINING WEAR-RESISTANT COATING | 2020 |
|
RU2753636C1 |
| METHOD OF PREPARING ROLLS TO OPERATION | 0 |
|
SU1634344A1 |
| METHOD FOR RESTORING WORN-OUT WORKING BODIES OF TILLAGE MACHINES | 2021 |
|
RU2762070C1 |
| METHOD FOR RESTORATION OF WORKING BODIES BY GAS-FLAME SURFACING | 2021 |
|
RU2756085C1 |
| METHOD FOR RESTORING WORN-OUT CUTTING SURFACES OF WORKING BODIES OF TILLAGE MACHINES | 2021 |
|
RU2763822C1 |
| METHOD FOR RESTORING WORN-OUT BLADES OF WORKING BODIES OF TILLAGE MACHINES | 2021 |
|
RU2763866C1 |
| METHOD FOR RESTORING WORN BIT OF TILLAGE MACHINE | 2020 |
|
RU2758861C1 |
