Problem to be solved: to provide a casting method capable of preventing increase in processing cost and suppressing casting defects.In the casting method of casting a casting material 1 made of aluminum alloy pipesA flux 3 is applied to a part of a cast section 2 to be cast out of the cast material 1A flux application step for forming the coating region 5 and the non coating region 6 andThe mold placing step in which the casting material 1 to which the flux 3 is applied is disposed in the mold 10 andThe casting process of casting the casting material 1 by casting molten metal made of aluminum alloy into the mold 10Equipped withThe cast sectionThe earth roughing part 7 is formed.In the flux application processThe flux 3 is applied to the ground rough portion 7.Diagram
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