EXPERIENCE OF WORKING OUT AND APPLICATION OF THE ULTRASONIC CONTROL OF WELDED CONNECTIONS FROM TWO-LAYER STEELS IN THE THICKNESS FROM 60 TO 250 MM

摘要

In the report the information on working out and application of technology of the ultrasonic testing of vessels from two-layer steels with thickness of a wall to 250 mm contains. JSC "Volgogradneftemash" (earlier the factory of oil mechanical engineering of Petrov) over 40 years makes vessels and the devices working under pressure, including from two-layer steels in the thickness to 120 mm with the basic metal from steels 09Γ2C, 16ΓC, 12XM, 15×5M etc. and a weld cladding layer from steels 08×13, 08×18H10T, 07×25H12Γ2T etc. NIIKHIMMASH and VNIIPTchimnefteapparatury in 1968-1973 technological instructions on the ultrasonic testing (UT) butt and angular welded connections from two-layer steels have been developed in the thickness from 10 to 60 mm. In 1981 VNIIPTchimnefteapparatury has increased a range of controllable thickness to 120 mm.