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本文对20MnVk钢矿用圆环链在离焊缝3～6mm处发生脆断的原因和脆硬相的本质以及消除其危害的方法进行了试验研究,对由于其它缺陷引起的断裂也提山了改进措施.
In this paper, 20MnVk steel ring with chains from the weld 3 ~ 6mm brittle fracture of the nature of the nature and the nature of the hard and hard phase to eliminate the harm of the method of experimental research, due to other defects caused by the fracture improvement measures.