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蠕虫状石墨铸铁的石墨形状和物理机械性能的关系重庆红岩机器厂吴子胜译近年来,蠕墨铸铁的研制和利用进展很快,但是蠕墨铸铁的定义并未明确。本试验以低流电弧炉生铁或球铁用高纯度生铁作为主要原料,用15公斤高频电炉在氧化镁坩埚中进行熔化,以Ti—Mg合金或Mg—Si合金处理,合金加入量在1.4％以内变化。浇注阶梯形试样和园棒试样。阶梯形试样主要研究由于壁厚改变引起的石墨形状及基体组织和机械性能的变化。园柱试棒主要研究温度传导率和石墨形状的关系。通过研究,提出球化率K和形状系数Q。
In recent years, the development and utilization of vermicular graphite iron has progressed rapidly, but the definition of vermicular graphite iron is not clear. In this experiment, low-flow electric arc furnace pig iron or ductile iron with high-purity pig iron as the main raw material, with 15 kilograms of high-frequency electric furnace melting in a magnesia crucible to Ti-Mg alloy or Mg-Si alloy processing, alloy addition 1.4 % Change. Pouring ladder-shaped specimens and garden stick specimens. Ladder-shaped specimens mainly due to changes in wall thickness caused by changes in graphite shape and matrix organization and mechanical properties. Cylindrical test rod mainly studies the relationship between temperature conductivity and graphite shape. Through the study, put forward the spheroidization rate K and shape coefficient Q.