Steel structure manufacture process, the important force nodes often have many weld penetration testing.Traditional welding process is carbon arc air gouging opposite qing, in recent years, the steel structure industry began to use welding ceramic liner from the root process, this is a kind of weld groove opposite after laying welding ceramic liner for welding on the front and reverse side weld force forming, make the full weld, weld neat welding method.Its advantages are:1, the internal quality of weld.Through to research deeply the technology of ceramic liner from qing root, the welding parameters, the groove size and clearance and so on various aspects is optimized (appropriate increase welding current to weld root penetration, etc.), eventually after ultrasonic testing of the weld specimen and weld mechanical properties test, X-ray detection, found no clear effect of root process to the traditional process, meet the requirements of production of van.
ction of van.