A method for manufacturing metal foam inside a pipeline includes extruding a metal conduit, injecting metal foam powder into the inner cavity of the metal conduit, and activating the foam powder to form integrated metal foam inside the conduit. A device for producing metal foam includes an extruder equipped with one or multiple screws to extrude raw metal materials through a mold for conduit forming. The mold is provided with multiple injection ports for delivering metal foam powder into the central cavity or wall cavity of the conduit. The device is equipped with a pressurizing unit to increase the pressure acting on foam powder and a heating unit to raise material temperature and promote foam expansion.

Area Code: US

Application Number: CN202110458253.3