介绍了用于制备纳米块材的等截面侧挤压技术的原理、方法和应用，并就其实验用模具的结构设计与尺寸确定作了详尽讨论。
The principle, method and application of equal cross section lateral extrusion process are introduced. The design of the structural parameters of the experimental die is discussed in detail.
对于非椭圆截面曲臂的大型曲轴，其模具结构设计对曲轴成形后的形状尺寸精度影响极大。
The design of die structure has much influence on shape dimension and precision of the formed crank-arm with a non elliptical section.
模具曲面用通过毛坯和型材截面的带张力参数的弗格森曲面表示，具有通用和曲面形状变化丰富的特点。
The die surface is represented by the Ferguson surface with tension parameter through transverse sections of product and billet, so it is universal and flexible.
有关结论和建议对复杂截面型材剪切设备及其模具设计十分重要。
The conclusions and Suggestions are more important for design of equipment and tool with complex section.
矩形截面模具弹簧与一般圆柱弹簧不同，它具有体积小，钢度大，疲劳寿命长特点。
Diffcrent from ordinary cylinder springs, die springs are of smaller size, higher rigidity and longer lifetime.
下模具（2）和上模具（4）的成型凹部（1、3）形成为具有半椭圆形轮廓以当模具闭合时提供大体椭圆形横截面的成型空间（S）。
The forming recesses (1, 3) of a lower die (2) and an upper die (4) are formed to have a semi-oval profile so as to provide a forming space S almost oval in section with the dies closed.
依据压铸模具浇口计算的基本原理，给出了内浇口截面积和内浇口内金属液流动速度的计算公式。
In this paper, the principles of gate calculation in the die-casting mould are discussed, and the calculation formulas of gate area adn fiow velocity of metal in the gate are given.
介绍了一种无飞边、多腔、圆截面橡胶密封圈压模的设计方法及制造技术，采用这种方法设计制造的模具结构简单、可靠，生产的产品质量良好。
The design technique and manufacture technology for a kind of multi-cavity, no-burr and round-section rubber sealing ring with multi-cavity and no-burr were introduced.
通过网格实验研究了等截面侧向挤压过程中材料的变形情况，结果表明塑性变形区仅位于模具通道拐点连线附近。
The deformation pattern of ECSLE was investigated with grid experiment. The experiment result shows that the plastic deformation zone is a linear area between the two corners of die channel.
通过网格实验研究了等截面侧向挤压过程中材料的变形情况，结果表明塑性变形区仅位于模具通道拐点连线附近。
The deformation pattern of ECSLE was investigated with grid experiment. The experiment result shows that the plastic deformation zone is a linear area between the two corners of die channel.
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