Method for wear-resistant compound roll manufacture

A method for producing a wear-resistant compound roll comprising a steel shaft portion and a shell portion comprising an iron-base alloy having a structure containing by an area ratio 5-30% of granular carbides and 5% or less of non-granular carbides comprising:

• a) forming said shell portion by a continuous casting method using a melt consisting essentially of 1.0-3.5 weight % of C, 3.0 weight % or less of Si, 1.5 weight % or less of Mn, 2-10 weight % of Cr, 9 weight % or less of Mo, 20 weight % or less of W, 2-15 weight % of V, 0.08 weight % or less of P, 0.06 weight % or less of S, 300 ppm or less of B, the balance being substantially Fe and inevitable impurities, and
• b) sealing the surface of the shaft portion and the surface of the melt forming the shell portion with a flux containing no B or B compounds and consisting essentially of SiO.sub.2, at least one of Na.sub.2 O and K.sub.2 O, and at least one oxide of a metal other than B,
• wherein the resulting shell portion, after sealing, contains 300 ppm or less B.