一、概述 V-法造型(Vacuum Process)在我国称为真空密封造型,它是日本在七十年代首先研究成功的一种全新的铸造工艺,系利用物理方法来成型,人们称之为第三代造型法。所谓V-法造型就是用单一的干砂(不加水、粘结剂及附加物)作型砂,用塑料薄膜经加热后在带有通气眼和抽气装置的模型上覆膜成型。具体做法是:放上砂箱,填入干砂进行微振,用塑料薄膜将砂箱顶部密封,并用真空泵对砂型进行抽气使型内形成真空,这样由于型内外压力差的作用,使型砂紧实成型从而获得具有一定形状和强度的砂型。然后合箱、浇注、冷却,解 First, an overview V-method modeling (Vacuum Process) in our country known as the vacuum seal modeling, it is the first in Japan in the seventies research success of a new casting process, the Department of the use of physical methods to shape, people call it the third Generation modeling method. The so-called V-method is to use a single dry sand (without water, adhesives and additives) for the sand, with a plastic film heated with a ventilated eye and suction device on the model coated. Specific approach is: put the sand box, filled with dry sand for vibration, the top of the flask sealed with plastic film and the vacuum pump to make the type of vacuum to form a vacuum, so that due to the type of pressure difference between inside and outside the role of sand Compact shape to obtain a shape and strength of the sand. Then combined boxes, pouring, cooling, solution