METHOD OF METALS JOINTING ON ALUMINIUM BASE Russian patent published in 2015 - IPC B23K20/02 B23K20/16 B23K103/10 

FIELD: metallurgy.

SUBSTANCE: invention can be used to joint metals on aluminium base. Between two connecting materials gasket material is inserted, it contains alloy comprising zinc and aluminium, or zinc and magnesium; or zinc, magnesium and aluminium; or zinc, copper and aluminium; or zinc, tin, aluminium; or zinc, silver and aluminium as main components. Both materials are heated to temperature that upon at their pressing results in eutectic reaction of gasket components and aluminium. Film of aluminium oxide is displaced together with melt from the separation border. At that one or both following conditions shall be met: pressure during jointing is from 5 MPa or up to 30 MPa, and ratio between roughness Ra of surface of both jointing materials and thickness t of the gasket material is from 0.00003 to 0.06. By the specified jointing method different parts are connected, such as separately cast block of engine head, separator of fuel element and solid-state component.

EFFECT: method ensures metals connection in air at low temperature and low pressure without flux use, minimises their deformation.

9 cl, 6 dwg, 1 tbl