设计了消失模涂料透气性、强度的测试方法 ,测定了填料粒度、粘结剂种类和加入量 ,以及添加剂对涂料强度、透气性、悬浮性等工艺性能的影响 ;配制了三缸铝合金进气管消失模铸造涂料 ,进行了不同工艺的浇注试验 ;结果表明 ,所配制的涂料抗弯强度不低于 1 5MPa ,悬浮性 2 4h不低于 98% ,透气性适中 ,涂料保温性能好 ,铸件未因涂料出现缺陷 ,浇注后易清理。 The test method of the breathability and the strength of the lost foam coating was designed. The effects of the filler particle size, the type and amount of the binder and the additives on the process performance of the coating strength, air permeability and suspensibility were tested. The three-cylinder aluminum alloy The results showed that the flexural strength of the prepared coating was not less than 15MPa, the suspending property was not less than 98% for 24 hours, the air permeability was moderate, the thermal insulation performance of the coating was good, and the castings No defects due to paint, easy to clean after pouring.