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介绍了消失模铸造工艺及工艺过程 ;对消失模铸造生产线中 6大工序功能和配套设备 ,以及长枪退式加料法、浇注理论和工艺方法的创新、涂料配方的改进等做了阐述。消失模铸造在石油机械制造中的创新应用获得了良好的效果和效益 ,表现在 :(1 )铸件无飞边毛刺 ,表面粗糙度提高 3～ 4级。 (2 )铸件品质提升 ,其价格比砂型铸件提高 1 0 %～ 2 0 %。 (3)由于采用除尘系统和尾气处理系统 ,固体污染物排放减少 80 % ,气体污染物排放减少 90 % ;泡沫气化尾气净化率99 6 8% ,实现了达标排放 ,减轻了铸造车间的污染。 (4 )铸件单重比砂型铸造平均减轻 3%～1 5 % ,减少铸件的后续机械加工量 ,机械加工费用节省 5 %～ 1 0 %。
The process and process of lost foam casting are introduced. The functions and equipment of the six major processes in the lost foam casting production line, as well as the retreating feeding method of lance, the innovation of pouring theory and process method, the improvement of coating formula and so on are elaborated. Lost foam casting in the oil machinery manufacturing innovation and application of the obtained good results and benefits, manifested in: (1) castings without flash burr, surface roughness increased by 3 to 4 levels. (2) improve the quality of castings, the price increase sand castings 10% ~ 20%. (3) Due to the adoption of dedusting system and exhaust gas treatment system, the discharge of solid pollutants is reduced by 80% and the discharge of gas pollutants by 90%; the purifying rate of foam gasification exhaust gas is 99.68%, achieving the discharge standards and reducing the pollution of the foundry . (4) The average casting weight per unit area of castings is 3% ~ 15% less than that of sand casting. The subsequent mechanical processing of castings is reduced, and the machining costs are saved by 5% ~ 10%.