METHOD FOR DULL-WORKING COLD ROLLING ROLL

PURPOSE:To manufacture a dull roll excellent in wear resistance through minimum number of stages by forming a thick autogenous alloy layer on the surface of the roll, then, dull-working it with high density energy beam. CONSTITUTION:The surface of the base material 1 of the roll is roughed by shot b...

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Bibliographische Detailangaben
Hauptverfasser:	KIYOFUJI TETSUO, KAWAMOTO TAKAHARU, HIRATA KOJI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL SOLDERING OR UNSOLDERING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PURPOSE:To manufacture a dull roll excellent in wear resistance through minimum number of stages by forming a thick autogenous alloy layer on the surface of the roll, then, dull-working it with high density energy beam. CONSTITUTION:The surface of the base material 1 of the roll is roughed by shot blasting, etc., then, the autogenous alloy 2 is formed by thermal spraying on the uniformly preheated surface of the base material of the roll. As soon as it is formed, the surface temperature of the film is elevated to melt the film again. At this time, after the film is held at a fixed temperature so that it is not overheated, it is cooled uniformly and gradually. After the surface of the film is ground and finished, projections 3 are formed by high density energy beam such as pulse laser, etc., on the surface of the film. As a result, the surface can be dull-worked again by re-grinding the autogenous alloy film 2, no film formation and no pretreatment for another dull working are needed and it is possible to form dull-worked projections 3 excellent in wear resistance.