采用树脂砂虽然会带来许多好处,但在生产中同样也会有铸件带有铸造缺陷。要防止铸造缺陷,首先要正确地了解产生缺陷的原因,其次要对众多的因素作实事求是地分析,在此基础上才可能确定有效而必要的措施。有些措施虽然有效,但其实施的代价较高,而且又可有其他的选择,因此应认真 The use of resin sand, although it will bring many benefits, but also in the production of castings with casting defects. To prevent casting defects, we must first correctly understand the causes of defects, followed by a large number of factors to make factual analysis, on this basis it is possible to determine the effective and necessary measures. Some measures, although effective, are costly to implement and may have other options, and should therefore be taken seriously