防止高速重轨钢真空喷溅的生产实践

Production practice for preventing vacuum splashing of high speed heavy rail

对高速重轨钢在抽真空过程中发生喷溅的机理进行分析,发现真空室内含有氧化性积渣以及真空度的快速下降是导致喷溅的主要原因。结合生产实践,提出了控制真空度、真空室内积渣及优化驱动气体模式和碳粉、锰铁加入时间等改进措施,取得了较好的效果。

The mechanism of high speed heavy rail splashing in the vacuumize process was analyzed, it was found that existing of oxidizing slag in vacuum chamber and rapid decreasing of vacuum degree were the main reasons for the splashing. According to the practical production, the improvement measures for controlling vacuum degree and slag deposition in vacuum chamber, optimizing driving gas mode, changing the time for adding carbon powder and ferromanganese were put forward, which obtained better effects.