通过对合格的铸铁钢锭模的铸态残留应力的实际检测,发现当钢锭模内表层有“额外”石墨化时残留铸造应力呈不利状态;而无额外石墨化时残留铸造应力呈“拉内压外”的有利状态、无需时效热处理,并从而推荐了合理化学成分。通过实际检测还发现,沿用工艺铸得的锭模的弹性模数及泊松比值较低,且具有软的力学特性。 Through the actual inspection of the as-cast residual stress of the qualified cast iron ingot mold, it is found that the residual casting stress is unfavorable when there is “extra” graphitization on the inner surface of the ingot mold; while the residual casting stress in the absence of additional graphitization is “ Outside ”the favorable state, without aging heat treatment, and thus recommend a reasonable chemical composition. The actual test also found that ingot molds obtained by the process have lower modulus of elasticity and Poisson’s ratio, and have soft mechanical properties.