【摘要】 文中利用正交试验的方法，研究了合金元素对灰铸铁膨胀系数的影响，选择了获得高膨胀系数铸铁的最佳成分。利用该成分，可获得接近ZL102合金膨胀系数的新型无镍的高膨胀系数铸铁。更多还原

【Abstract】 Using orthogonal test,the effect of alloying elements on expansion coefficient of grayiron was investigated;a optimum composition of a kind of high expansion coefficient cast iron wasobtained.The expansion coefficient of this cast iron without Ni element can be closed to that ofZL102 Al alloy.更多还原