Welding Automotive Frames. The welding method used to repair frames of trucks cars or any sort of automobile is known as frame welding. A crush zone is designed to use up energy in a crash.
DOES WELDING A SUBFRAME WEAKEN IT. The issues where welds are thought to weaken frames is when the initial frame cracks and is rewearing. They then use a welding technique to fasten the new piece of metal and repair the vehicles frame or fender safely.
Some people weld vehicle frames by using spot welding.
Many welding techniques apply to autobody work. On a federal level it is not illegal to weld a frame. At the local and state level the laws may be different. The frames particularly are subjected to different forms of pressure.