How to inspect the product after spot welding of aluminum plate spot welding machine?
There are several methods for judging whether welding products are qualified after spot welding: visual, destructive experiment, ultrasonic X-ray detection, and section making metallographic experiment.
Visual inspection: visual observation of the surface of the workpiece, excessive cracks in the welding joints, splattering of spines, cracks, etc.
Specimens damage experiment: how to play the method of extraction and thickness and material of the same material to the welding workpiece materials, in after completion of welding for shear, tensile or stripping experiment, the detection performance of specimens to judge whether the workpiece can meet the requirements of performance requirements.
Ultrasonic X-ray detection: in order to under the premise of without destroying the product need to determine whether the product is in a nuclear nuclear and of molten shrinkage cavity and crack, but by ultrasonic and X-ray detection, the digital signal is converted into graphical information, image can be accurately determine the size of the welding and welding effect.
The section is made of metallographic experiment: after the welding is finished
Material and size selection and precautions for welding electrodes: taper electrode shape is recommended, cone Angle 120-140 degree or face radius is 25-50mm.
