球墨铸铁柴油机曲轴

• 机 构: 无锡柴油机厂rrrrrrrrrrn,第八机械工业部球墨铸铁研究室
• 出 处: 铸造
• 发表日期: 1965年07期
• 关键词: 球墨铸铁 柴油机曲轴 缩松 石墨漂浮 磁粉探伤 铁水 合金 球墨 夹渣 试验研究

从1957年开始,我厂就试验和应用了球墨铸铁。在柴油机上采用了球墨铸铁曲轴,并一直坚持使用。但是由于镁球墨铸铁长期存在的夹渣、缩松缺陷没有彻底解决,废品率总在20%以上;而且绝大部分废品是在精加工后磁粉探伤时才发现,损失更大,有时甚至影响任务的按期完成。几年来我厂进行过不少试验研究,也取得了一定成效,但质量一直不能稳定,成为老大难的生产关键。

Since 1957, our factory has tested and applied ductile iron. Nodular cast iron crankshafts are used on diesel engines and are always used. However, magnesium slag ductile iron long-existing slag, shrinkage defects are not completely solved, the rejection rate is always above 20%; and most of the waste is found after the magnetic particle inspection after finishing, the loss is greater, and sometimes even affect the task Completed on schedule. Over the past few years I plant a lot of pilot studies, but also achieved some success, but the quality has not been stable, the crux of the production of the key.