VACUUM BLASTING DEVICE AND VACUUM BLASTING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a vacuum blasting device capable of performing vacuum blast efficiently without further payment or burden on a worker, when blast treatment is applied from below to a welding line of a steel member.;SOLUTION: The vacuum blasting device 10 for vacuum blasting a welding line from below, after on-site welding of a steel member includes: a guide sheath barrel 20 disposed along the welding line immediately under the welding line; a blast head 30 disposed in this guide sheath barrel 20 and capable of moving in a longitudinal direction in this guide sheath barrel 20 and capable of applying blast treatment to the welding line from below by jetting a blast material upward together with the movement; and a suction means 80 for sucking inside of the guide sheath barrel 20 and recovering the blast material jetted from the blast head 30.;COPYRIGHT: (C)2010,JPO&INPIT