Analysis of superplastic deformation of backward extrusion by the rigid plastic finite element method

Wearing and fracture on the punch often apoccur during the forming cylinder of in which a warm backward extrusion process is employed.

采用温挤压成形工艺生产减速顶滑动油缸体时，冲头经常会出现磨损和断裂失效。

A Method to Prevent the Extruded Part Sticking to the Die in Isothermal Backward Extrusion

等温反挤压中挤压件抱模的防治方法

Combination with the design experience, the critical value depth-width ratio in the backward extrusion formation of rectangular shell parts is concluded.

结合模具设计的经验，推断出了反挤压成形矩形壳体零件的临界高／宽比。

Experimental research of the influence of backward extrusion on the mechanical properties of SiCw/ 6061 composite

反挤压对SiCw/6061力学性能影响的实验研究

The backward extrusion process is a chief method to form the parts of nonferrous, iron and steel materials. It has been widely applied to the metal forming industry.

反挤压成形是有色金属、钢铁材料生产与零件成形加工的主要方法之一，在金属塑性成形工业生产中有着广泛的应用。

The experiments prove the effectiveness of semi-active friction in lowering the pressure of backward extrusion for cup-like pieces of rolling bearing steel.

在实验装置上验证了轴承钢半积极摩擦反挤杯形件降低挤压力的效果。

In the second part of the paper, the technology parameters of backward extrusion parts are optimized.

其次，论文对反挤压零件的工艺参数进行了优化。

A Research on Unstable State of Backward Extrusion Pressing

反挤压不稳定状态的研究

Varying law of extrusion force in process of backward extrusion

反向挤压时的挤压力变化规律

Based on rigid-plastic finite element method, backward extrusion process of TB10 titanium alloy cylinder was simulated numerically.

基于刚塑性有限元法，对TB10钛合金筒体反挤压过程进行数值模拟。

The Application of the Backward Extrusion in the Fabrication Process of Silver Alloy Materials

反向挤压在银合金材料加工中的应用

Calculated deformation rule has some reference to the design of backward extrusion process.

计算得到的变形规律对于链条滚子的反挤压工艺设计具有一定的参考作用。

The Slab Solution for Biconical Punch for Backward Extrusion of Cup-like Piece

双锥冲头反挤杯形件的主应力解

The Simulation of Cup Backward Extrusion Process

杯形件反挤压成形过程模拟研究

The set-up is designed for experiments of backward extrusion under conditions of semi-active friction and can be used in practical production as well.

设计了可用于实验和生产的半积极摩擦反挤压的实验装置。

Influence of backward extrusion punch shape to the extrusion process

反挤压凸模形状对挤压成形工艺的影响

The Comparison and assess of Calculating Methods of Backward Extrusion Pressure for Aluminum Alloy Cups

铝合金杯形件反挤压力计算方法的评比

Based on the optimized parameters, the backward extrusion and ironing formation technology experiment of shell parts is done.

接着，论文用优化的工艺参数对电池壳体零件的反挤压+变薄拉深成形工艺做了试验，归纳了反挤压和变薄拉深的模具设计要点和经验。

With each pulse of the laser beam, a tiny amount of corneal tissue is removed.

每一次激光束的脉冲移除微量的组织.

That a tiny amount.

那只是很少的水量.