闭口孔型 meaning in English

closed passes
dead hole
tongue and groove pass
tongue-and-groove pass

Abstract : this article gives us the new concept and its meaning of the semi - ellipse roller , and discussed the function of the semi - ellipse closing roller from four aspects , that is from increasing the pipe deformation , pipe bouncing control , improving pipe edge rigidity and stablity , and realizing the common usage of the closing roller
文摘:提出半椭圆闭口孔型新概念和其内涵，分别从增大管坯变形量、控制管坯回弹、提高管坯边缘刚性和运行的稳定性以及实现闭口孔型辊的共用性等四个方面论述了半椭圆闭口孔型辊的作用。
It also gives the semi - ellipse closing roller forming principle & quot; semi - ellipse + bouncing = round & quot; , and makes the principle formulated and quantitative for the control method and pattern of the pipe forming bouncing . this is the reasonable model for forming of thick wall pipe and high stress pipe
指出半椭圆闭口孔型辊的成型思想是“半椭圆+回弹量=圆” ，并且使这一思想公式化、数量化，为控制成型管坯的回弹提供了方式和方法，是成型高强度厚壁管的理想模具。