FORMING FOR PROVISION OF EQUAL CHARACTERISTICS OF SHEETS, APPARATUS FOR FRICTION WELDING WITH MIXING WITH APPLICATION OF COOLING ELEMENT Russian patent published in 2014 - IPC B21D26/55 B23K20/12 B23K31/02 

FIELD: process engineering.

SUBSTANCE: process can be used at production of titanium structures by friction welding with mixing. Titanium sheets (802, 804) are welded together to make the blank with several cast zones of welds (918). Said blank is arranged between female die section and cover section. Female die section is heated to heat said blank. Compressed gas is fed in space between cover section and female die section to press said blank into female die for form the component. Cast zones of welds feature preset relative depth after component forming making from 1.1 to 1.25 so that metal sheets and formed component feature several, in fact identical, characteristics. Said characteristics are selected from the group composed of strength, fatigue properties, crack and rust resistance, impact strength and grain size.

EFFECT: selection of required superplasticity strain in the weld cast zone at its preset depth.

14 cl, 25 dwg