Melting metallurgical process, useful for preparing metal foamed body, comprises providing molten metal into reservoir, introducing the metal in evacuable frothing vessel, and foaming the metal through rapid evacuation of the vessel

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This patent describes a process for producing metal foam bodies by rapidly evacuating a vessel containing molten metal, without the need for blowing agents or stabilizing particles. The process involves pouring molten metal into a specially designed vessel, then quickly reducing the pressure to form foam, followed by controlled cooling and solidification of the foamed structure.

Use CasesContent extracted from patent full text and abstract with AI.

• Lightweight structural components for automotive and aerospace industries
• Impact-absorbing materials in transportation and protective equipment
• Thermal and acoustic insulation panels
• Energy absorption materials in crash barriers or safety devices
• Porous metal filters and catalyst supports

BenefitsContent extracted from patent full text and abstract with AI.

• Eliminates the need for chemical blowing agents or stabilization additives, resulting in purer metal foams
• Simplifies the production method, reducing potential contaminants and processing complexity
• Enables precise control over the foaming and solidification process, improving material consistency
• Potentially lowers production costs and environmental impact compared to traditional foam-making methods
• Allows production of foamed metals with adjustable porosity and properties for diverse applications

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Patent Abstract

The melting metallurgical process comprises providing a molten metal (2) containing neither blowing agents nor stabilizing particles into a reservoir (3), introducing the molten metal in an evacuable frothing vessel (7) such as a reusable shaping vessel, foaming the molten metal through rapid evacuation of the frothing vessel with an evacuation rate of greater 5-10 3>to 5-10 4>Pa/second at a final pressure of 10 2>Pa, setting, in the frothing vessel, a cooling rate of greater than 5-50 K/s over the pressure and/or temperature change, and solidifying the metal foam. The melting metallurgical process comprises providing a molten metal (2) containing neither blowing agents nor stabilizing particles into a reservoir (3), introducing the molten metal in an evacuable frothing vessel (7) such as a reusable shaping vessel, foaming the molten metal through rapid evacuation of the frothing vessel with an evacuation rate of greater 5-10 3>to 5-10 4>Pa/second at a final pressure of 10 2>Pa, setting, in the frothing vessel, a cooling rate of greater than 5-50 K/s over the pressure and/or temperature change, and solidifying the metal foam. The introduction of the molten metal is carried out by reducing the pressure in the frothing vessel and via a filler neck connected with the reservoir. A gas pressure of the frothing vessel is rapidly decreased, after the introduction of the molten metal, by connecting the vessel with an additional vacuum reservoir. The molten metal is adjusted, in the reservoir, to a temperature, which is 20-200[deg] C above a liquidus point. An independent claim is included for an assembly for a melting metallurgical process for preparing a metal foamed body.