METHOD FOR MANUFACTURE OF TWO-LAYER PRODUCTS Russian patent published in 2018 - IPC B23K20/14 

FIELD: technological processes.

SUBSTANCE: two sheets, piled on top of each other, are heated in a chamber and welded by diffusion welding applying gas pressure to the outer surfaces on both sides of the sheets. As said gas, combustion products of the fuel mixture are used. The fuel mixture is fed into the chamber under pressure and ignited. The composition of the fuel mixture is selected based on the condition of obtaining the temperature of its combustion products above the melting point of one of the sheets. Heating of one of the welded sheets is carried out up to a temperature above the melting point of the second sheet. During the heating of the sheets, they are co-extruded by obtaining a difference in pressure of the fuel mixture from one side and the other side of the welded sheets.

EFFECT: method provides control over the process of heating the sheets taking into account their thickness by selecting the fuel mixture pressure while reducing the welding time.

3 cl, 3 dwg