| 摘要 |
A composite working roll, in particular for a roughing or finishing stand of a hot strip rolling mill, said working roll comprising a core of a metal selected from the group consisting of iron and steel, an outer zone of chromium-vanadium steel and a bonding zone between said core and said outer zone, wherein said steel of said outer zone contains 1.3 to 2.2% by weight carbon, 8 to 16% by weight chromium and 4 to 7% by weight vanadium, the remainder being constituted by iron and other elements which are usually present. Preferably the steel of the outer zone contains 9 to 14% chromium and 5 to 6,5% vanadium and the vanadium content decreases with increase in the carbon content.
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