将一块大小足以充填模腔并能稍有溢出的加热金属放入底模，并将顶模加压合拢，这块金属便获得该模腔的形状。
A piece of hot metal sufficient to slightly overfill the die shape is placed in the bottom die, and the top die is forced against it, so that the metal takes the internal shape of the die.
冲压是利用冲压模在压力机上对板料或热料施加压力使其产生塑性变形或分离，以获得具有一定形状和尺寸的零件压力加工方法。
Punching is a kind of pressure process method that punching dies are used in press sheet to put pressure on the plastic deformation or separation, for a certain shape and size of components.
对模具结构、合模加压系统的机理和结构作了介绍，讨论了压力调整的可行性。
And we also introduce the construction of mold, the mechanism and construction of mold-closing pressure-increasing system, the feasibility of pressure adjustment.
摇盘凸模接触到铝合金液时，控制加压速度平稳一些，可减少气孔的产生。
It can decrease the production of air hole by controlling the stableness of the velocity when female die contacted the liquid of aluminium.
双下模，180度回转，下模上顶加压，工作效率高。
Double lower shapes, 180 degrees turning, lower shape rise to press, and with high efficiency.
提出了一种浮动凹模芯模闭式镦粗法，以解决厚壁管在单向加压的普通液压机上进行闭式镦粗后壁厚不均的问题。
Using closed die upsetting process to manufacture thick wall tubes on normal hydraulic press may cause the dis uniformity of the thickness along the length of the tube.
特有的缓加压、慢退模程序更有利于保证压样合格率、提高压样样品质量。
With specific programs of slow pressurization and slow mould-release, the products are favorable to ensure acceptance rate of sample-press, improve sample quality of sample-press.
其加压方向后方侧的断面形状是圆形，其直径略等于成形用模体的内径。
Moreover, a backward side with respect to the pressing direction has a circular section and its diameter is substantially same as the inner diameter of the container.
其加压方向后方侧的断面形状是圆形，其直径略等于成形用模体的内径。
Moreover, a backward side with respect to the pressing direction has a circular section and its diameter is substantially same as the inner diameter of the container.
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