硅碳比对灰铸铁收缩倾向的影响

The Effect of Si:C Ratio on the Shrinkage Tendency of Grey Cast Iron

对不同碳当量和硅碳比灰铸铁的体收缩和线收缩值进行了测定;通过热分析曲线和金相组织的分析,研究了硅碳比对灰铸铁收缩倾向的影响。结果表明,随硅碳比的增加,体收缩增大,线收缩变化不大。

Abstract The volume and linear shrinkage value of grey cast iron with different CE and Si:C ratio were determined. On the basis of observing the thermal analysis curves and metallographic structures, the influence of Si:C ratio on shrinkage tendency was investigated. The Experimental results showed that the volume shrinkage value raised with increasing Si:C ratio, but the change of linear shrinkage value was less marked.