Rapid test method for drainage performance of gypsum powder for ceramic mold

The invention discloses a rapid test method for drainage performance of gypsum powder for a ceramic mold, the method comprises the following steps: manufacturing a triple test mold, reserving a mounting groove in the middle part of each test block of the triple test mold, fixedly inserting a ventilation pipe in the mounting groove, uniformly distributing air outlet micropores in the pipe body of the ventilation pipe extending into the mounting groove, wherein the inner end of the ventilation pipe is closed, and the outer end is communicated with an air pump; weighing the initial weight G0 of the test block, then introducing compressed airinto the ventilation pipe through the air pump, performing pressurization according to a specified pressure gradient curve, and calculating the average drainage rate. The method is scientific and reasonable in design, after compressed air enters the ventilation pipe, the compressed air is diffused outwards through the air outlet micropores, and moisture stored in the capillar