PROCESS OF WELDING OF THIN-WALLED MULTILAYER ELEMENTS WITH FIXTURES Russian patent published in 1996 - IPC

FIELD: welding. SUBSTANCE: before assembly in multilayer package of blanks of bellows, shells are coated with of nickel on areas meant for welding. Coat is deposited both on external and internal surfaces of each of shells. Layer of nickel coat 5-15 μ thick is deposited on surfaces of shells which are external surfaces of multilayer package. After assembly and manufacture of bellows it is welded to thick-walled fixture first by seam resistance welding over butts of elements and then by fusion welding for joining with fixture. EFFECT: enhanced resistance of weld of article used in atmosphere of hydrogen. 1 tbl