在单件小批生产中,遇到尺寸较大直的或弯的圆柱体或棱柱体的泥芯时,可节约制造芯盒的材料和工时,可以采用地面蜡壳导向刮板法造芯。具体做法是:首先用导向刮板造型法在地面上刮制出一半芯子外形的型腔,用压勺压平压实,然后涂上一层石腊,这就相当半扇芯盒了。充填芯砂、搐实、与地 In single-piece, small-batch production, when encountering a muddy core of a larger straight or curved cylinder or prism, the material and working hours for manufacturing the core box can be saved, and the ground wax shell guide scraper method can be used for making the core. The specific approach is: First, with the guide scraper modeling method on the ground scraping half the core shape of the cavity, with a pressure spoon compaction, and then coated with a layer of stone wax, which is quite a half fan box. Fill the core sand, convulsions, and the ground