摘要
通过对白口铸铁锻造裂纹的断口分析及锻造温度范围内不同温度下水淬白口铸铁宏观硬度及组织变化的研究,对共晶碳化物在不同锻造温度下形态、数量的变化对白口铸铁的热塑性的影响规律进行了探讨。结果表明,共晶碳化物是影响白口铸铁热塑性的主要因素;白口铸铁加热至950℃时,共晶碳化物开始大量分解固溶,导致高温下白口铸铁具有极为良好的塑性,可进行大变形量的锻轧加工。
In this paper, by means of analyzing the fracture of the forge crack of white cast iron and the changes of macrohardness and microstructure of water quenched iron at the different temperature in the range of forge temperature. It is explored that the law that the changes of shape and quantity of eutectic carbide at the different forge temperature affect the hot plasticity of white cast iron. The results show that eutectic carbide is the chief factor which affects the hot plasticity of white castiron, and that when white cast iron test semple is heated to 950℃ a largeqnantity of euteetic carbide begins decomposing and solutionizing, and causing white cast iron to have excellent plasticity at the high temperatnre, and forge and roll of a large deformation measure are available.
出处
《热加工工艺》
CSCD
北大核心
1991年第6期12-13,19,共3页
Hot Working Technology
关键词
白口铸铁
共晶碳化物
锻造
温度
White cast iron, eutectic carbide, forge temperature
