FIELD: various technological processes.
SUBSTANCE: invention may be used in the recovery of forming rolls of piercing mills. Preliminary determination is made of the most worn out portion of the roll surface, broken down by its wear amount into parallel local areas. For each of the sections, average wear is measured and the hardness of the weld metal is calculated as a function of the depth of the worn layer. Profiles the most worn part of the roll surface by boring it to the depth of the maximum possible wear of the roll. Preliminary heating of the roll is carried out and the abovementioned local sections are surfaced with wear-resistant materials to obtain transverse layers of welded metal of different hardness.
EFFECT: method provides an increase in the operational life of the rolls.
1 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR RESTORING ROLLING ROLLS | 2001 |
|
RU2202422C2 |
| SCALE BREAKER STAND ROLL | 0 |
|
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| METHOD FOR REPAIRING ROLLING ROLLS | 2001 |
|
RU2195378C1 |
| ROLLING MILL ROLL | 0 |
|
SU1600879A1 |
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|
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| METHOD OF CAST IRON FORMING ROLL WOBBLERS REPAIR | 2006 |
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| METHOD OF REPAIR BY WELDING | 1994 |
|
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| RECONDITIONING OF CAST IRON FORMING ROLLS (VERSIONS) | 2013 |
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| METHOD OF BUILDING UP ROLLS | 2002 |
|
RU2218220C1 |
| METHOD OF MULTIPLE FACING OF STEEL PRODUCTS WITH CAST IRON | 0 |
|
SU1676763A1 |
