FIELD: metallurgy.
SUBSTANCE: first, a roll is heated at a rate of 50 °C/h to temperature of 1050 °C and is kept at this temperature and cooled in the air to 400-500 °C, then the roller is heated at the same rate to a temperature in the range of 900-1000 °C, is kept at this temperature, cooled in oil, after which the roll is heated at the same rate to the annealing temperature in the range of 500-680 °C depending on a given hardness, is kept at this temperature and cooled in the air.
EFFECT: increased mechanical properties of the roll by obtaining more fine-grained structure, increased depth of the roll working layer, improved operating characteristics of the roll and reduced duration of heat treatment.
1 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR THERMAL PROCESSING OF FORGED ROLLS FROM HYPEREUTECTOID STEEL | 2002 |
|
RU2235137C2 |
| METHOD OF THERMAL HARDENING OF TUBE-MOLDING ROLL | 2000 |
|
RU2192486C2 |
| METHOD FOR MAKING ROLL OF SHAPE BENDING AGGREGATE | 2001 |
|
RU2203333C2 |
| METHOD OF THERMAL TREATMENT OF METAL-ROLLING ROLLS | 0 |
|
SU1544825A1 |
| METHOD OF THERMAL TREATMENT OF STEEL ARTICLES WITH ENHANCED STRENGTH OF SUPERCOOLED AUSTENITE | 0 |
|
SU1733482A1 |
| METHOD FOR RECONDITIONING OF WORKING ROLLS OF COLD-ROLLING MILLS | 1992 |
|
RU2015866C1 |
| METHOD OF BUILDING UP ROLLS | 2002 |
|
RU2218220C1 |
| METHOD OF MANUFACTURE OF BANDAGES FROM HYPEREUTECTOID STEELS | 2001 |
|
RU2203968C2 |
| METHOD FOR HEAT TREATMENT OF LARGE SECTIONS, MADE OF HYPEREUTECTOID STEELS | 0 |
|
SU1770384A1 |
| METHOD OF RESTORING ROLLS FROM HYPEREUTECTOID STEELS | 1986 |
|
RU2066695C1 |
