| 摘要 |
PROBLEM TO BE SOLVED: To provide an inside-wall hardening material deposited on a cylinder for an injection molding machine for plastics or the like by using a centrifugal lining method. SOLUTION: This high toughness inside-wall hardening material for a cylinder has a composition containing, by weight, 18 to 24% Cr, 2.8 to 3.5% B, 1.0 to 4.0% Si, 0.5 to 3.0% Mo, 0.5 to 3.0% Cu, 1.0 to 5.0% W and 0.05 to 0.15% Al, and the balance Co with unavoidable impurities.
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