| 摘要 |
<p>PURPOSE:To manufacture the steel having improved fatigue resistance by incorporating specific ratios of C, Si, Mn, S, Cr, Nb, Al, N and P into Fe. CONSTITUTION:A steel contg., by weight, 0.10 to 0.25% C, 0.50 to 3.0% Si, 1.00 to 3.0% Mn, 0.01 to 0.20% S, 0.50 to 1.50% Cr, 0.020 to 0.120% Nb, 0.02 to 0.10% Al, 0.010 to 0.025% N and <=0.01% P, contg., at need, 0.005 to 0.10% Ti, furthermore contg. <=4.0% Ni, <=1.0% Mo, <=0.1% V and <=1.0% Cu and the balance Fe with inevitable impurities is prepd. In this way, the steel for carburizing-shot peening provided with excellent fatigue resistance can be obtd.</p> |
