METHOD OF PRODUCING OF COMPOSITE CASTING Russian patent published in 2009 - IPC B23K20/04 B32B37/10 B21B38/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to composite casting methods of manufacturing and can be used during the receiving of thin bimetallic strips with following regulation of layers joint efficiency. Method includes collateral cold rolling of blanks with cobbing one-pass with feeding of pulse of current into deformation area. Pulses of current are fed directly throug insulated from each other rollers with peak value of current density J_m=(5…10)·10⁵ A/cm², pulse-repetition frequency - f=(0.07…2.5) kHz, and pulse duration - t_pulse=(0.2…5)·10^-3 s. Additionally during rolling it is implemented the control of layers strength of joint of the received composite casting. Strength control is implemented by means of measurement of surplus temperatures of composite casting in different points of surface with its heating by point source. On the basis of surplus temperatures it is defined electrical contact resistance composite casting layers, and strength of joint of layers is defined from preliminary defined relation of layers strength of joint from the value of electrical contact resistance of composite casting layers.

EFFECT: improvement of composite casting ensured by continuous inspection strength of joint of layers in the process of its manufacturing and increasing of working efficiency ensured by elimination of annealing process during the composite casting manufacturing.

2 cl, 4 dwg