| 摘要 |
PURPOSE:To obtain a dot printer wire excellent in corrosion resistance and wear resistance by specifying a composition consisting of C, Cr, W, Mo, V, Co, Si, Mn, and Fe and property regulating the relationship between C and carbide forming elements. CONSTITUTION:This wire has a composition which consists of, by weight, 1.5-2.8%, preferably 1.8-2.0% C, 7.5-12.0%, preferably 9.0-10.5% Cr, <=18.0%, preferably 2-12% W, <=11.0%, preferably 2-8% Mo, 3-10%, preferably 4-6% V, 1.0-10%, preferably 2-5% Co, <=1.0%, preferably 0.1-0.5% Si, <=1.0%, preferably 0.1-0.5% Mn, and the balance Fe with inevitable impurities and further contains, if necessary, 0.04-0.15% N and in which (W+2Mo) is regulated to 12-22, preferably 14-18, and further, (C-Ceq) is regulated to -0.5 to -0.15, preferably -0.35 to -0.15, when Ceq=0.06Cr+0.033W+0.063Mo+0.2V and also has a structure in which the average grain size of carbide is regulated, preferably, to <=1.5mum. By this method, the lightweight and long-life dot printer wire excellent in corrosion resistance, wear resistance, wiredrawability, and toughness can be obtained. |
