A356 Method for inhibiting pore formation of A356 alloy by addition of manganese

摘要

The present invention relates to a method for suppressing pore generation of an A356 alloy through the addition of manganese. According to the present invention, when preparing an A356 alloy casting, the addition of manganese (0.1 to 0.2% by weight) reduces hydrogen solubility to suppress pore formation. Sound A356 alloy castings can be produced. Since it is impossible to block the source of hydrogen gas, the addition of manganese in the manufacture of A356 alloy castings changes the hydrogen solubility of the molten material in accordance with the content to suppress pore formation and improve the mechanical properties, surface defects, etc. of the A356 alloy castings. This can improve the product value of the alloy.