The invention belongs to the technical field of aluminum
alloy gravity
casting, and relates to a method for preparing an aluminum
alloy engine cylinder cover by using a tilted pouring process. As thealuminum
alloy engine cylinder cover is prepared by using the tilted pouring process, during pouring, a mold is tilted by 100 degrees, molten aluminum flows into a pouring basin 6, the mold is tiltedfrom 100 degrees to 0 degree, the molten aluminum flows into a cylinder cover cavity B 8 from a gas inlet side inner runner B 7 under the action of gravity, when the mold is tilted to 0 degree, namelythe mold is horizontal, the molten aluminum fills the cylinder cover cavity B 8, and finally continuously fills a riser B 9, then the aluminum alloy engine cylinder cover is formed, wherein the weight of the mold riser selected by the tilted pouring process is 9215 grams, the adopted
casting time is 13 seconds, the solidification time is 180 seconds to 190 seconds, and the temperature of coolingwater is 30 DEG C. According to the method, the tilted pouring process is applied to the aluminum alloy engine cylinder cover, winding of a molten aluminum
punching molding path can be reduced, too many twists and turns are avoided, and gas
entrapment, heat dissipation and pressure loss are avoided; and problems about
shrinkage porosity and exhaust side cold shuts are effectively solved, and the
leakage test qualification rate is improved.