The Research Of Quality Of Rail Welding

At present, the PD3 rail has been used in rail engineering frequently, but, there still are some problems in controlling system of welding joint quality. Therefore, it is very important to proceed the research of welding joint quality systematically.Aiming at the engineering problem that K welding machine is used to weld PD3 60kg/m rail during welding production at present, the quality of the joint falls short of the standard of TB/T1632-91 because of the objection of grey-spots in the welding joint, this paper analyses the element which influence the welding joint quality in detail from the stability of flash of the accelerating step of the rail, finds out the relationship between the stability of flash-butt welding and the quality of rail joint, provides the measure for controlling the quality of rail welding and some gist for establishing perfect controlling system of welding joint quality...