本文的研究表明,通过有效孕育或调整铁水的化学成分,可大大减少碳化物的形成。如果对铸件进行退火处理,很可能所有碳化物都会消失。把钒加到灰铸铁中后,形成浅红色的弥散质点。就加入量在0.5％以下来说,钒是提高灰铸铁抗拉強度的有效元素之一。加入钒0.1％的就可提高抗拉 The research in this paper shows that the formation of carbides can be greatly reduced by effectively breeding or adjusting the chemical composition of hot metal. If the casting is annealed, it is likely that all the carbides will disappear. The vanadium added to the gray iron, the formation of light red diffuse particles. Vanadium is one of the effective elements to increase the tensile strength of gray cast iron in the amount of 0.5% or less. Adding 0.1% vanadium can increase tensile strength