Process Parameters Determination of Sand Treating Line
An introduction was given to the investigation of molding sand moisture,mixing time,molding sand composition,following conclusions were obtained:(1)Determination of the water-adding system parameters:when using belt to add water,the sand flow parameter was set at 7 kg/s,the nozzle water flow was 0.04 kg/s,and the water adding amount was set at 0～0.9％.When using sand mixer to add water,the water weight was of 1.8 t,A0 and A,were of-3.4 and 2.15 respectively,the maximum water adding volume was of 58 t,the water pipe flow rate was of 3 Us,the maximum water addition time was of 20 s,when using fluidized bed to add water,the sand flow rate was of 260 kg/min,the water filling requirement was set to 1.2％～1.5％,A0=-0.3,A1=0.9,the periodic time was of 10 s,and the water pipe flow rate was of 2 L/s.(2)Sand mixing time:the unloading time of the large scale was 10 s,the unloading time of the small scale was 12 s,the wet mixing time 1 was 10 s,sand unloading time was 25 s,the sand mixing time was of 100 s.(3)Compositions of the molding sand were:water of 3.1％,bentonite of 12 kg,α starch of 5 kg.
万方数据
维普
