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真空密封造型(Vacuum Sealed Moulding Process)简称“V法造型”,是70年代初由日本人首先发明的一种新型造型方法,被称为第三代造型法。(第一代造型法是包括高压造型和射压造型在内的机械力造型方法;第二代造型法是指热芯盒、冷芯盒等化学造型方法;第三代造型法是物理真空密封造型方法)。目前,世界上已有上百家铸造厂采用V法技术,其中以日本最多。在日本,起重机配件、铸铁溶盆、钢琴弦排等铸件70％以上是采用
Vacuum Sealed Molding Process, referred to as “V Method”, is a new type of modeling method first invented by the Japanese in the early 1970s. It is called the third generation modeling method. (The first generation modeling method is a mechanical modeling method including high-pressure molding and injection molding; the second-generation molding method refers to a chemical molding method such as a hot-box, a cold-box, etc. The third generation modeling method is a physical vacuum sealing Modeling method). At present, there are already hundreds of foundries in the world adopting V technique, of which Japan is the most. In Japan, cranes, cast iron castings, piano chords and other castings over 70% is used