“解放机油泵”泥芯砂的优选

• 机 构: 朝晖机械厂,
• 出 处: 贵州机械
• 发表日期: 1976年01期
• 关键词: 泥芯砂 机油泵 铸件毛坯 发气量 气孔 铸件 透气性 原砂 桐油 车间生产

我车间生产解放机油泵铸件毛坯,由于泥芯砂配制不当,铸件由气孔而导致报废十分严重,一般情况下,废品率达30—40%,有时高达50%以上一、优选前情况:泥芯砂配比:原砂:100,白泥5～10,桐油:2～3,水分适量。经分析:气孔产生主要由于泥芯发气量大和泥芯透气性差,白泥是影响透气性的主要因

I workshop production of liberation pump castings blank, due to improper preparation of mud core sand, castings caused by stomata and scrapped very serious, under normal circumstances, the rejection rate of 30-40%, and sometimes as high as 50% or more before the preferred situation: mud core Sand ratio: the original sand: 100, lime 5 to 10, tung oil: 2 to 3, the amount of water. Analysis: Stomatal is mainly due to the large amount of mud core porosity and mud core permeability is poor, white clay is the main factor affecting the permeability