METHOD OF PRODUCING LAMINAR PLATES FROM FOAMED ALUMINIUM Russian patent published in 2010 - IPC B22F7/02 C22C1/08 B22F3/24 

FIELD: process engineering.

SUBSTANCE: invention relates to powder metallurgy, namely to method of producing high-thickness plates from foamed aluminium that can be used in production of elevators, aircraft and ship engineering and construction. Proposed method comprises hot rolling of mix of aluminium alloy powder with porophore into sheet slabs, assembling a stack with interlayer fitted in between sheet slabs and placing assembled stack into mould with sizes of finished product, and foaming. Note here that said interlayer between sheet slab represents mix of aluminium alloy powder with porophore into sheet slabs. Foaming is performed by heating to 40-70°C above the temperature of solid-liquid phase transition. Note also that said foaming is carried out in mold with movable top part in two stages. At first stage foaming is carried out to thickness not exceeding 50% of that required for finished product. At second stage mould top movable part is lifted to allow foaming to thickness of finished product.

EFFECT: higher strength at layers joints and foamed aluminium layer.

3 cl, 2 dwg