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根据作者关于应力、变形和裂断所进行的试验结果,证明斜轧穿孔过程中金属的组织状态发生了一系列的变化,具有一个变形—裂断的发生发展过程,这个规律可以用“五段三层”加以概括。作者分析了金属变形和裂断相互伴随又相互制约关系,论述了中心金属的断裂性质属于正断型的韧性断裂,揭示了在斜轧时金属中心存在一个特殊的加工状态——利于穿孔成型的裂而未断的疏松状态,提出了穿孔工艺实质和最佳穿孔工艺图示以及对中心金属裂断发展过程必须加以利用同时加以控制的观点,试图为正确进行穿孔工艺控制奠定理论基础。
According to the author’s experimental results on stress, deformation and fracture, it is proved that the microstructure of the metal during the perforation of the cross-rolling has undergone a series of changes, with the occurrence and development of a deformation-fracture. The law can be expressed in five stages Three layers "to be summed up. The author analyzes the mutual and mutual restraint relationship between metal deformation and fracture, discusses the fracture property of center metal belongs to the ductile fracture of normal fracture type, and reveals that there is a special machining state in the metal center during the cross rolling - The idea of perforation process and the best perforation process are put forward and the development of the center metal crack must be utilized and controlled at the same time in order to lay a theoretical foundation for the correct perforation process control.