Can the Chassis Frame of a New Car Be Repaired by Welding?
1 Answers
It can be repaired using electric welding. Protective welding is preferred as it has minimal impact on the surrounding structure. The thickness, shape, and position of the added patch plate should be designed according to the stress-bearing capacity of the frame. Additionally, welding should not be done fully; the position of the weld points affects both the stress distribution and structure. Cracks must be treated to prevent further extension. Common repair methods for truck chassis frames are as follows: 1. Direct realignment at the fracture or crack location: This repair method involves straightening the bent section of the frame, then directly beveling the inner and outer surfaces at the fracture or crack location. The damaged area is repaired using a non-disassembly, non-excavation butt welding process. If necessary, reinforcement materials can be applied at the fracture site. 2. Excavation and welding repair at the bent section of the frame: This repair method is further divided into two approaches. The first is local excavation and welding repair, where the damaged or deformed section is partially removed and replaced with a patch of the same size and material. The second method is full excavation and welding repair, where the bent section of the frame is entirely cut off to a certain length, and a V-groove is made at the open end (the total V-groove angle after splicing should be approximately 50°).
