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试验证明:二辊斜轧穿孔时中心金属在特定的应力场作用下,其组织状态发生了一系列变化,具有一个有规律的变形和裂断发生发展过程。这个过程的规律性可以用五区(阶段性)和三层(区域性)加以概括。分析了变形过程和裂断过程相互伴随、相互制约关系。论述了金属体内产生的有利于实现穿孔成型的特殊的中心加工状态(即变形的力学状态和组织状态),提出了二辊斜轧穿孔变形工艺实质和最佳穿孔工艺图示以及对中心金属的裂断应该加以利用又必须加以控制的观点,试图建立正确进行穿孔工艺调整的理论基础。
The experiment proves that under the action of the specific stress field, the microstructure of the center metal underwent a series of changes during the piercing of the two rolls. The regular deformation and rupture occurred. The regularity of this process can be summarized in five zones (phased) and three (compartmentalized). Analysis of the deformation process and the process of breaking each other with each other, the relationship between the constraints. The special central machining state (ie, the mechanical state and the microstructure of the deformation) that is conducive to perforation forming in the metal body is discussed. The actual and optimal perforation process of the two-roll oblique-piercing perforation and deformation process is presented, Cracking should be used and must be controlled point of view, trying to establish the correct perforating process to adjust the theoretical basis.