Closed type torsion beam inner cavity corrosion prevention and lubrication process

• Main Authors: CHENG MINGQIANG, DIAO XIANJUN, ZHONG HUASHAN
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2021
• Subjects: APPARATUS THEREFOR; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; SOLDERING OR UNSOLDERING; TRANSPORTING; VEHICLE SUSPENSION ARRANGEMENTS; VEHICLES IN GENERAL; WELDING; WORKING BY LASER BEAM

The invention relates to the technical field of torsion beam machining, in particular to a closed type torsion beam inner cavity corrosion prevention and lubrication process which comprises the following specific steps that a process hole is formed in one end of a closed type torsion beam, and welding of a welding seam 1 and a welding seam 2 at the two ends is completed; sealing performance inspection is conducted on an inner cavity of the closed torsion beam so as to prevent oil liquid from seeping outwards in the anti-corrosion and lubricating steps; and for the closed type torsion beam which is checked and confirmed to be intact in sealing performance, anti-rust oil is injected into an inner cavity of the closed type torsion beam from the auxiliary hole for corrosion prevention and lubrication treatment, the closed type torsion beam is turned over, after oil injection is completed, plug welding sealing is conducted on the auxiliary hole, and an electrophoresis procedure is conducted. Before the closed tors