论文部分内容阅读
该铸铁具有铁素体和铁素体—珠光体基体组织,石墨球化率>90％。试验时,将冲击韧性降低到一半时的温度作为韧脆转变温度Tkp。 用于试验的试样采用炉料成分中有废钢(包括钢屑)的工业性熔炼铁水来铸造。铁水采用变质剂进行球化处理。其化学成分如表1所示。
The cast iron with ferrite and ferrite - pearlite matrix, graphite nodularity> 90%. Test, the impact toughness is reduced to half the temperature as the ductile-brittle transition temperature Tkp. The test specimens were cast using industrial smelting hot metal containing scrap (including steel shavings) in the charge composition. Hot metal degenerate agent for ball treatment. The chemical composition shown in Table 1.