ROLLER RESTORATION METHOD

FIELD: restoring by welding rollers of machines for billet continuous casting, rollers of roller tables of hot rolling mills and other parts of metallurgical equipment. SUBSTANCE: after heating roller barrel until 150 wear resistant layer is surfaced. Heating up modes provide ratio of welding curren...

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Bibliographische Detailangaben
Hauptverfasser:	KOSTIN A.A, SARYCHEV I.S, ANDROSOV N.V, VETER V.V, TKACHUK G.V, BELKIN G.A, BEZUKLADOV V.I, IL'IN JU.A
Format:	Patent
Sprache:	eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING COMBINED OPERATIONS CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR OTHER WORKING OF METAL PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING UNIVERSAL MACHINE TOOLS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	FIELD: restoring by welding rollers of machines for billet continuous casting, rollers of roller tables of hot rolling mills and other parts of metallurgical equipment. SUBSTANCE: after heating roller barrel until 150 wear resistant layer is surfaced. Heating up modes provide ratio of welding current intensity A relative to surfacing rate (m/h) no more than 17,5; ratio of welding current intensity A to heating temperature (C) no more than 3. When roller is wholly surfaced it is subjected to heat treatment. Roller is heated at rate no more than 80 C/h until 470-500 C, seasoned for 7-8 hours and cooled at rate no more than 80 C/h until 120 C, then it is cooled at open air. EFFECT: high-quality surfacing of roller surface, elimination of crumbling out surfaced layer at operation process. 3 cle