| 摘要 |
<p>A method for producing sand cores for foundry, comprising the operations of: defining a moulding cavity (6); blowing in a mixture of sand and hydrated binder into said moulding cavity (6) so as to produce a mass of sand (M), which reproduces in a complementary way the shape of said moulding cavity (6); and producing the passage, through said mass of sand (M), of a flow of aeriform along at least one principal direction (X). <??>The method comprises the operation of generating through said mass of sand (M) a flow of aeriform, directed at least in part in a radial direction with respect to said principal direction. <IMAGE></p> |
