Técnicas de união

501-25-59 Body Repairs - General Information 501-25-59 DESCRIPTION AND OPERATION Joining Techniques Welding Before welding work is performed on a vehicle body, all safety measures for the protection of people, modules and electrical components must be observed. NOTE: Before beginning the work, please refer to the safety instructions and warnings in the chapter Safety Instructions. Please also note the warnings of the respective equipment manufacturer. E113734 In doing so, the repair welds must match the standard of those produced in production in number and diameter. Preconditions for resistance spot welding: ‡ The panels to be welded overlap. ‡ The weld spot is accessible on both sides for the electrodes. ‡ The shape and alignment of the weld electrodes is correct. ‡ The resistance welding equipment is powerful enough to be able to reproduce the production spot weld diameter. Resistance spot welding and MIG welding are the most common techniques used in body construction. During repair work, the welded connection must be restored to be equivalent to the original. Resistance spot welding. NOTE: Before starting the work, please refer to the chapter on safety instructions. NOTE: The welding equipment settings and the adjustment of the individual parameters are to be made in accordance with the device manufacturer's specifications. Well-prepared welding flanges are a prerequisite for a problem-free welded joint. This means: ‡ The welding flanges must lie perfectly flat to one another. ‡ The welding flanges must be clean and free of oil or grease on both sides. ‡ Welding primer (zinc-coated and conductive) must be applied as corrosion prevention.