Instead of attempting a repair, the proper course of action is:
* Safety First: If the axle is broken on a vehicle, do not attempt to drive it. Have it towed to a qualified mechanic or repair shop.
* Professional Repair: A mechanic will assess the damage. Depending on the severity of the break and the type of axle, the only viable solution is typically replacement. Welding a broken axle is generally not recommended due to the stress the axle experiences and potential weakening of the metal. Even if welded, it may not pass safety inspections.
* Identify the Cause: The mechanic will investigate *why* the axle broke. This could be due to overloading, a manufacturing defect, corrosion, or other factors. Addressing the root cause is crucial to prevent future failures.
In short, don't try to fix a broken axle yourself. It's a job for a professional.