M3000蠕铁气缸盖气缩孔的成因及解决措施
Formation Cause and Solution of Shrinkage Blowhole of M3000 Vermicular Cast Iron Cylinder Head
李统宇1,2, 苏广才1
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作者单位:(1.广西大学 机械工程学院,广西 南宁530004;2.广西玉柴机器股份有限公司,广西 玉林537005)
中文关键字:气缩孔; 砂芯; 冷铁
英文关键字:shrinkage blowhole; sand core; densener
中文摘要:对M3000蠕铁气缸盖气缩孔的成因进行了分析,并采取了加强型芯排气,严格控制浇注工艺;稳定过程控制,保证蠕化效果; 加快热节部位冷却速度等工艺措施,使缸盖气缩孔缺陷基本消除,废品率由最高时的20%下降到1%以下。
英文摘要:The formation cause of M3000 vermicular cast iron cylinder head was analysed, and the measures of strengthening core exhaust, controlling pouring technology, guaranteeing effect of vermicular cast iron, quickening cooling velocity of hot spot, etc, were taken, the shrinkage blowhole defect of the cylinder head was eliminated. The waste product rate comes down from 20% to 1%.