| With the quickly development of science technology, men's civilization and advancement have reach a high altitude,especially, manufacturing is weigh a lot, manufacturing has become the base of the nation's economy and general power. For the plastic forming technology has many merits, such as high production, good quality , economization. It has become a important develop orientation of the advanced manufacture technology. The world market's demand will have a new challenge on precision plastic forming technology.China's production of car is showing a great developing foreground. Car's accessory is the cell of the car. To the manufacture of the car's cell, economization ,high efficiency and quality ,low cost ,all are most attention questions of the technology of manufacture in the modern times . And it has difficult problems in the aspects of theory, facility and technology. Settling them has a stratagem meaning for driving the development of the car industry.When people are carrying through the theory disquisition , produce of the metal plastic forming and the design of mould, especially for the more important and expensive product , people always make a simulation in advance. So they can get forecast results before the practical manufacture. The simulation technology includes geometry physical and numerical modelling.Physical modelling is a experimental analyzing way in the base of similar theory . As it has the virtues of simpleness, easiness, it also has more important functions than numerical modelling , and it is a important way of the modelling of the metal plastic forming. In recent years, it also needs continual development and perfecting.According to my teacher Professor Song Yuquan's patent "the preparation of the colour clay sandwich sample and use to the physical modelling of the cross wedge rolling". Aim at the actuality of the physical modelling and the purpose of this investigation use new modelling ways. Using argil plasticine as modelling material is easy to get, also its additive is little, and every time the coherence of the experimental material is good , so it can get over the disadvantage of the commercial plasticine that always change with process of the production. Plasticine each has different colour ,and needn't accede to dye. So that can be sure that material is coherence better .Using different colour plasticine is easy to observe the distortion of plasticine. If the glutinosity of the argil plasticine is good, then different parts of the slop can felt into together without superfluity glutinosity, that can be satisfied the require of the modelling experiment very well. Using the way delaminate colour clay sandwich plasticine, namely using different plasticine to make billet by the way of subsection and delamination. For the parts need to review, when use different plasticine to make delamination billet, we can make the other parts with one same colour. In the section of the sandwich plasticine, we can observe the flow circs of the material in axes and the status of the central material, conquering over the disadvantage of tradition gridding way and is fit into the study of axes symmetry. Design and make the set of the modelling experiment machine, has the locomotion characteristic similar to plate forming ,can use to model the forming process of the plasticine billet. It has the merits of high precision oriented. And can change the distance of the fluctuated plates by adjust the middle hang beam of the experiment machine , so can make the forming of the different diameter and the contractility of different section of the same rough be true. Design and make the set of tool to satisfy the need of clay sandwich sample.This kind of physical modelling experiment has been proved by plate cross wedge rolling. Colour clay sandwich plasticine been delaminated in local can reappear the movement of the material very well. It sets a base for it been used in more complex plastic forming latter . Continuous local plastic forming is important in the field of met...
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