FIELD: process engineering.
SUBSTANCE: invention relates to production of mineral cotton, particularly, to repair of vertical-centrifugal centrifuges, namely, to repair of rolls by surfacing. Repair comprises removal of the roll worn-out working surface by lather and application of stainless steel coating by hard-surfacing. Hard-surfacing is executed at a time with roll cooling from inside since hard-surfacing without cooling causes accumulation of excessive amount of residual strain. Then, the roll is turned at lathe so that working surface is regular. Now, it is sintered at 1000-1200°C for 12 hours for final removal of residual strain.
EFFECT: simplified repair, higher hardness of reconditioned part, roll longer life.
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF REPAIR BY WELDING | 1994 |
|
RU2083342C1 |
| METHOD FOR REPAIR OF PARTS OF METALLURGICAL EQUIPMENT | 1996 |
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|
RU2202423C1 |
| ROLLING MILL ROLL | 0 |
|
SU1600879A1 |
