一、引言 熔模铸造内腔形状复杂的铸件,目前国内外的同行们使用易溶型芯或陶瓷型芯成形。这样能确保尺寸精度,但是要预先制好型芯在压蜡时放入,工艺繁锁,不符合多年来要缩短熔铸生产周期的愿望。在保证尺寸精度的前提下,近年来,我们尝试了这项工作,并取得了可喜的效果。本文就我们的一些作法介绍如下: I. Introduction Investment casting cavities complex shape of the casting, the current domestic and foreign counterparts using soluble core or ceramic core forming. This ensures dimensional accuracy, but pre-made good core pressure wax into the time-consuming process, does not meet the desire to shorten the casting production cycle over the years. In ensuring the dimensional accuracy of the premise, in recent years, we have tried this work, and achieved gratifying results. This article describes some of our practices as follows: