This invention relates to the field of aluminum foam technology and discloses a method for producing closed-
cell aluminum foam by blowing, comprising the following steps: (1)
raw material preparation; (2) aluminum melt preparation; (3) foam stabilizer mixing; (4) blowing foam; (5) cooling and shaping. This invention forms a closed-
loop control system throughout the entire process by orderly coordinating key links such as
coating foam stabilizer, melt purification and activation, pre-dispersion mixing, dynamic
temperature and pressure foaming, and gradient cooling and shaping: the
coating foam stabilizer provides a stable bubble core, the purified and activated melt provides a strong pore wall matrix, pre-dispersion and composite stirring ensure uniform distribution of bubbles throughout the entire area, dynamic
temperature and pressure and vibration achieve precise bubble growth, and gradient cooling ensures a stable final structure without cracks. Each step supports and reinforces the others, forming a continuous, uniform, and complete closed-
cell network inside the aluminum foam, significantly improving the closed-
cell rate, pore size uniformity, and compressive mechanical properties.