METHOD OF MANUFACTURE OF LONG PRODUCTS FROM DIFFERENT METALS Russian patent published in 1997 - IPC

FIELD: manufacture of long products from different metals. SUBSTANCE: the offered method provides for making oblique end face of blank from metal with low plasticity, fixing of the blank on press tool, location in press container of blank from metal with high plasticity, coaxial positioning of joined blanks and subsequent plastic deformation by application of axial load at which mutual oncoming motion of blanks material is accomplished along the surface of their contact due to plastic flow out of metal of high plasticity through hole in press tool or through gap between blank of low-plasticity metal and press tool. Oblique end face on blank from low-plasticity metal may be dihedral, or polyhedral angle, conical surface, etc. EFFECT: the offered method makes it possible, for a short period of time and at moderate loads, to produce long welded products from different metals having transverse location of joint zone with preset or arbitrary smooth change of properties on the transition from one metal to the other. 3 cl, 2 dwg