本方法是将模型上面的型砂,借助于作用在封闭室内型砂上的高气压予以紧实。其特点是气压是籍高压电流电弧放电产生的。文内还提出了此法的一系列方案。电弧是在液体或固体介质中激发,介质在放电作用下蒸发或气化。在电弧激发之前的电弧区域内放进由导电材料做的金属丝,而型砂在放电之前或放电期间从气体压力作用的一面进行润湿。实现该方法所 In this method, the molding sand above the model is compacted by means of the high pressure acting on the molding sand of the closed chamber. It is characterized by the pressure generated by high voltage arc discharge. The article also proposed a series of programs of this method. The arc is excited in a liquid or solid medium, and the medium evaporates or gasifies under the action of a discharge. The wire made of a conductive material is placed in the arc area prior to the arc excitation and the molding sand is wetted from the side of the gas pressure before or during the discharge. To achieve this method