论文部分内容阅读
研究了金属型可锻铸铁退火过程，结果表明，与砂型铸件相比，第一阶段石墨化退火由２ｈ减少至４５ｍｉｎ；第二阶段石墨化退火时间由７ｈ５０ｍｉｎ缩短至５ｈ５０ｍｉｎ。
The results show that the graphitization annealing of the first stage is reduced from 2h to 45min compared with that of the sand castings, and the graphitization annealing time of the second stage is shortened from 7h50min to 5h50min.