US 11,745,262 B2
Method for foaming metal in a liquid bath
Wolfgang Seeliger, Saarbrucken (DE); and Stefan Sattler, Bornheim (DE)
Assigned to POHLTEC METALFOAM GMBH, Cologne (DE)
Appl. No. 16/646,770
Filed by POHLTEC METALFOAM GMBH, Cologne (DE)
PCT Filed Sep. 14, 2018, PCT No. PCT/EP2018/074869
§ 371(c)(1), (2) Date Jun. 2, 2020,
PCT Pub. No. WO2019/053184, PCT Pub. Date Mar. 21, 2019.
Claims priority of application No. 10 2017 121 513.1 (DE), filed on Sep. 15, 2017.
Prior Publication US 2020/0298311 A1, Sep. 24, 2020
Int. Cl. B22F 7/00 (2006.01); B22F 3/11 (2006.01); C22C 1/08 (2006.01); C22C 1/04 (2023.01)
CPC B22F 7/006 (2013.01) [B22F 3/1125 (2013.01); C22C 1/08 (2013.01); B22F 2998/10 (2013.01); C22C 1/0416 (2013.01); C22C 1/0458 (2013.01); C22C 1/083 (2023.01)] 21 Claims
OG exemplary drawing
 
1. Method for producing a metal foam of at least one first metal that contains a main constituent of Mg, Al, Pb, Au, Zn, Ti or Fe in a quantity of at least approximately 80 wt. % in relation to the quantity of the at least one first metal, said method comprising the following steps:
(I) providing a semi-finished product comprising a foamable mixture that comprises the at least one first metal and at least one blowing agent,
(II) submerging the semi-finished product in a heatable bath comprising a liquid wherein the liquid of the heatable bath comprises at least one molten salt or solid particle, and
(III) heating the semi-finished product in the bath in order to foam the foamable mixture by removing gas from the at least one blowing agent for forming the metal foam.