1975年以来,使用厌氧浸渗树脂密封缩松铸件的生产增长了10倍,而且还有着增长的趋势。但在早期担心(这种工艺被用来密封次品铸件的大面积缩松)此工艺不被接受,随着对厌氧浸渗不能解决大于0.005英寸孔洞的重新认识,这种担心消除了。为了区别于较小的非结构空洞,才产生了“显微缩松”这一专业名词,从而该工艺进入了一 Since 1975, the use of anaerobic impregnated resin sealing shrinkage casting production increased 10-fold, but also there is a growing trend. However, in the early stages of worrying that this process was used to seal the large area shrinkage of defective castings, this process was not accepted and the concern was eliminated with the inability to re-recognize holes larger than 0.005 inches for anaerobic impregnation. In order to distinguish it from the smaller unstructured voids, a specialized term of “micro-shrinkage” was created so that the process entered a