METHOD FOR TIGHTENING MOUNTING STUDS OF FLANGED JOINT Russian patent published in 2002 - IPC

FIELD: processes for assembling flanged joints, possibly tightening mounting assemblies of flanged joints, particularly for connection devices of large-size pressure vessels. SUBSTANCE: method comprises thermo elongation of each stud supporting nut screwed onto it by heating stud in flow of hot air; subsequent after-screwing of nut; feeding flow of hot air through lateral opening of flange at side of after-screwed nut into gap between stud and opening for it in flange in order to provide passing of hot air flow along stud towards its opposite end. EFFECT: enhanced efficiency of method, simplified technique of assembling and tightening flange joint. 2 dwg