Method for manufacturing abrasion-proof conveying roll with high-temperature erosion resistance

• Main Authors: SHEN CHENGJIN, TAO QING, HUANG ZHAOHAI, LAI YAWEI, ZHANG YONG, CHEN ZHENG
• Format: Patent
• Language: English
• Published: 04.03.2015
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; 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; COMBINED OPERATIONS; 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; OTHER WORKING OF METAL; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; UNIVERSAL MACHINE TOOLS

The invention provides a method for manufacturing an abrasion-proof conveying roll with high-temperature erosion resistance and belongs to a method for manufacturing a conveying roll for steel rolling and hot rolling. The abrasion-proof conveying roll with high-temperature erosion resistance is manufactured and molded from a medium steel roll body and metal ceramic roll working surfaces; the roll body is formed by welding a medium steel thick wall steel pipe and a mounting roll core, and properties of rotation, support, conveying and the like of the roll body are provided; the roll working surfaces are positioned at two ends of the conveying roll, NiCrMo-WC alloy of 2-6mm is adopted in the radial direction, and the roll working surfaces are formed by virtue of supersonic flame spray coating or supersonic plasma spray coating. The NiCrMo-WC alloy is composed of 4.0-5.5% of C, 10.5-15.5% of Ni, 1.5-15.0% of Cr, 1.0-2.0% of Mo, 0.5-1.5% of Fe and the balance of W and is a spherical particle powdered material formed by virtue of vacuum melting and gas atomization. The conveying roll has the advantages of high-temperature erosion resistance, abrasion-proof property and long service life.