近几年来,球墨鑄鉄在机械制造业中的运用越来越普遍了,許多高强度的机械零件(如汽車、拖拉机的曲軸和偏心軸等)都采用了球墨鑄鉄来代替价值較高的鑄鋼。随着球墨鑄鉄件生产的增长,无疑 In recent years, the application of ductile cast iron in the machinery manufacturing industry has become more and more common. Many high-strength mechanical parts (such as automobiles, tractor crankshafts and eccentric shafts, etc.) use ductile cast iron instead of higher value Cast steel. With the growth of ductile castings production, no doubt