Forming force during backward extrusion of hollow billet was analyzed by slab method and numerical simulation.
采用主应力法与数值模拟相结合的方法，研究分析空心坯料反挤压成形力变化规律。
To reduce the forming force, techniques that are improving the formability of coining with micro-feature were studied.
并以有效降低成形力为目标，研究探讨提高微细特征成形性的工艺措施。
All above make it possible to optimize the bulk forming process and the die design in respect of decreasing forming force and saving material.
从而为变形力、变形功与节省材料的角度优化设计体积成形工艺及模具找到了有效途经；
Web thickness is one of the important parameters in Closed-die forging process, which has an effect on forming force of die forging and material consumption.
连皮厚度是开式模锻工艺参数中的一个重要参量，它对模锻变形力和材料的消耗有很大的影响。
The equations for forming force of flow-controlled forming, the criterion for control chamber position and the design methods for shape and dimension design are presented.
提出了流动控制成形力的计算公式、控制腔位置的判断准则及其形状和尺寸的设计方法。
Process condition of upsetting shoulder was discussed and forming force was calculated based on column buckling theory. The die structure and working principle was introduced.
基于压杆稳定理论，探讨了该制件镦压凸肩的工艺条件，计算所需的工艺力，介绍其镦压成形模具的设计结构、工作原理。
A technology to form copper long-branch tee pipe directly in compound forming of bulging and extrusion is developed, the formula and calculation of the forming force are introduced.
对紫铜长支管T型管复合胀形工艺进行了试验研究，介绍了包括冲头挤压力的公式与计算，试验中所用复合胀形模具结构和部分重要零件的设计与选取及试验结果。
It's the key to analyze the forming feasibility, find out the way to calculate the forming force, select the suitable process parameter in open-die cold extrusion of rectangle spline.
矩形花键轴是汽车传动的重要零件，矩形花键的无约束正挤压成形是一种先进的花键加工方法。
This paper mainly introduces structure and prinicipe of mouth bulging die for diffusion tube, calculation method of blank size and forming force, design technology of main work parts.
主要介绍扩散管胀口模具的结构与工作原理、毛坯尺寸及胀口力计算方法和主要工作部件的设计技术。
The results show that the two schemes are right, but the scheme forming head shape in sequence can decrease the forming force significantly, the reason is that the material flow mode is changed.
结果表明，两种方案均能正确成形，但是顺序成形能显著降低成形力，其主要原因是金属的流动模式发生了变化。
Then the FEM simulation was applied to study the influence of friction factor and initial forging temperature on maximum forming force, which provided reference on finishing process for similar parts.
通过有限元模拟，进一步研究了整形温度、摩擦系数对最大载荷的影响规律，为此类零件的局部精整工艺制定提供了理论参考。
The force of gravity starts to pull together huge regions of relatively dense cosmic gas, forming the vast, swirling collections of stars we call galaxies.
引力逐渐把密集的大区域星云气体拉拢，形成那些巨大、漩涡状结构的所谓星系群。
Most of that gas flows inward and adds to the mass of the forming star, but the gas is rotating. The centrifugal force from that prevents some of the gas from reaching the forming star.
大多数气体向里流动，增加正在形成的恒星的质量，但这些气体一直在旋转。
Compressed air will then force the panels to rise up on their hinges, forming a slanting barrier to the incoming tide from the Adriatic Sea.
这些挡板在压缩空气力量的作用下会竖立起来，从而形成一个倾斜的屏障挡住来自亚得利亚海的洪水。
The forming mechanism of the bias force is the key to the study of the modulated steerable rotary drilling system.
导向力的形成机理是研制旋转导向工具的核心。
The optimization of drawing technique was researched, and the influence of different blank holder force and minimum die fillet radius on stamping forming was studied as well.
对该零件成形工艺进行了优化，研究了不同的压边力、最小模具圆角半径对冲压成形的影响，通过对模拟结果的分析得出了空调前板的最优化成形方案。
Tube electromagnetic forming is realized by magnetic pulse force.
管件电磁成形是依靠磁脉冲力来实现的。
The forming mechanism of bias force of the RCLD system for the rotary steering drilling technology was investigated.
对调制式旋转导向工具RCLD系统的导向力的形成机理进行了探讨。
The function of the blank holder force (BHF) as well as its influence on the forming performance and forming accuracy of combined stepped-hole were analyzed.
分析了压边力的作用及其大小对这种复合台阶孔成形性能和成形质量的影响。
Forming of the force of center uplifting and lateral compressing depends on the size of dip Angle of plate subduction.
中央隆升力和侧向挤压力的形成取决于板块俯冲倾角的大小。
Wrinkling and fracture are the major defects in sheet metal forming, and the blank-holder force(BHF) is an important technologic parameter controlling the forming of sheet metal.
在板材成形中，起皱和拉裂是主要缺陷，而压边力是控制板材成形的重要工艺参数。
The electrons of an atom are bound to the nucleus by the electromagnetic force. Likewise, a group of atoms can remain bound to each other, forming a molecule.
电子原子必将核的电磁力。同样，一组原子可以保持彼此的约束，形成了分子。
Therefore it is necessary to study forming characteristic of conical part, to analyze various parameters'influence on its forming limit, and to define reasonable blank holding force(BHF).
圆锥形零件是曲面类零件中较为典型的零件，对其冲压成形过程的研究是进行曲面类零件研究的基础。
The roll forming device inputs the rotating drive force to the forming roll (2) from rotating force transmitting means (1).
该辊成形装置从旋转力传递机构（1）向成形辊（2）输入旋转驱动力。
Enterprise Culture is inner mechanism and base of forming competition force.
企业文化是竞争力形成的内在机制与基础。
At present, most domestic and foreign scholars mainly control the forming quality of HSS by means of variable holder force technology, thermal and hydraulic forming technology.
当今国内外大多数学者主要采用变压边力技术、热成形和液压成形技术来控制高强度钢板成形质量。
Based on the forming process of the aberrant electromotive force, the expression of the aberrant electromotive force in the practical work of the vehicle alternator is deduced in this paper.
基于交流发电机畸变电动势的形成过程，推导了汽车交流发电机实际工作的畸变电动势表达式。
In order to achieve above-mentioned purpose, there must be suitable nodal structural forms to guarantee enough pre-stress force exerted and make the forming of the continuous stress circuit possible.
为了达到上述目的，必须有合适的节点构造形式来保证能够施加上足够的预应力，并使得连续的应力同路的形成变得可能。
In order to achieve above-mentioned purpose, there must be suitable nodal structural forms to guarantee enough pre-stress force exerted and make the forming of the continuous stress circuit possible.
为了达到上述目的，必须有合适的节点构造形式来保证能够施加上足够的预应力，并使得连续的应力同路的形成变得可能。
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