Finally, to simulation the results of optimization, the wall thickness reduction decreased and get satisfactory results.
最后利用优化结果进行模拟，壁厚减薄率明显下降，得到了满意的效果。
An exemplary embodiment of the invention provides a method for producing an ultra thin wall metallic tube by cold working method with significant wall thickness reduction.
本发明提供一种用冷加工法制造超薄壁金属管的方法。
In this paper, the temperature reduction of cylinder head metal wall and the influence on engine performance are investigated by different thickness of PSZ coating on cylinder head combustion surface.
本文研究了气缸盖火力面喷涂不同厚度的PS Z层对气缸盖金属壁面温度降低的情况及对发动机性能的影响。
It is practically verified that this method exhibited less expense, easy operation, cast wall with uniform thickness, deformation decrease and cast defects reduction.
实践证明：该法铸造成本较低、操作简单，且铸件壁厚均匀、变形量小、铸造缺陷较少。
The results show that the effect of temperature on grain size is outstanding, next is wall thickness, section reduction in order.
结果表明：轧制温度对晶粒尺寸影响显著，其次依次为壁厚、断面收缩率。
It is found that hoop stress increases due to reduction in wall thickness of HDPE pipe, while yielding stress decreases owing to decrease of strain rate.
同时，基于粘弹性应力分析模型得到管材蠕变的应变率逐渐减小，由于聚乙烯的屈服应力具有明显的率相关性，屈服应力也随之逐渐减小。
It is found that hoop stress increases due to reduction in wall thickness of HDPE pipe, while yielding stress decreases owing to decrease of strain rate.
同时，基于粘弹性应力分析模型得到管材蠕变的应变率逐渐减小，由于聚乙烯的屈服应力具有明显的率相关性，屈服应力也随之逐渐减小。
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