Method for improving flowability of ceramic core slurry

The invention belongs to the precision casting field, and particularly relates to a method for improving flowability of ceramic core slurry. The method comprises the following steps of preparing ceramic core slurry, heating to a temperature of 90-110 DEG C; pouring into a cylinder plunger barrel; arranging a small seam (length: 10mm, width: 1 mm; and thickness: 10 mm) under the plunger barrel; applying a pressure of 2-3 MPa to the ceramic core slurry in the plunger barrel to make the ceramic core slurry go through the small seam; and extruding repeatedly for at least 5 times, so that the flowability of the ceramic core slurry can be improved. A plasticizer and a ceramic core material in the ceramic core slurry can be fused better via extruding the ceramic core slurry repeatedly by the technical solution, so that the flowability of the ceramic core slurry can be improved; compression moulding of the ceramic core with complex structures can be realized when the temperature of a mould is a normal temperature; the core can be cooled completely in the mould; and deformation of the core in drawing the mould and placing can be prevented.