| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to metallurgy, particularly, to roller for hot material support and transfer, particularly, continuously cast steel blank at roller table or at continuous casting unit. Proposed roller comprises body consisting of roller shell from parent steel containing up to 0.45 wt % of carbon and wear layer applied on parent metal by one-pass building up using the filler. Wear layer in, at least, roller shell outer surface has the following composition, in wt %: 12.5-14.0% - Cr, 0.10-0.18% - Nb, 3.4-4.5% - Ni, 0.6-1.0% - Mo, 0.12% - N, 0.7% - Si, 0.6-1.2% - Mn, 0.06-0.14% - C, not over 0.025% of S, not over 0.025% of P, Fe and impurities making the rest. Spread of contents of every alloying element makes +/-5%.EFFECT: longer life of roller, higher wear resistance, lower costs.7 cl, 6 dwg, 1 ex |
