The Intelligent Mobile Rail Gas Pressure Welding Equipment

At present, the rail mobile gas pressure welding equipment control way is quite backward, the automaticity is low, the human factor affects much, the welding mass fluctuation is big. Therefore, studies the rail gas pressure welding quality control key technologies, develops as soon as possible develops is suitable in the field welding automatic control system has the very vital significance.According to this article, YHJ-680 type mobile packing up convex pressure rail welding characteristics and requirements of technology to Siemens S7-200 type PLC to control the core of the Delta for the man-machine interface displays an intelligent mobile welding pressure machine.First, the design pressure stretching machine, upset, packing up convex integration, upset with the fuel tank of a cylinder to achieve this dual function, but upset in addition to the fuel tank should be upset to meet the technical requirements, Rail yet to meet the operational requirements of the stretch. As a result, the design of new models of its ultra-high pressure piston pump stations used, the maximum pressure to 63MPa, upset, stretching the fuel tank of the largest tensile strength for the 680kN, upset, the largest stretching to travel 260 mm can meet at the same time upset, the demand stretch operation.Secondly, the design of the rail welding, forging top of the fuel tank is not relief, to keep the fuel tank welding upset when the oil pressure of the other conditions set by the relative independence of the hydraulic cylinder-led push convex in addition to the welding tool push tumor . This pushed the tumor, the department of rail weld metal atoms with each other and the proliferation of recrystallization in the process of forging the top edge of the conditions, the quality of welding is not affected, all of a sudden case of on-site power of its original value of the upset pressure has always been the same power failure seam and will not be opened from outside, this time on the online welding seam quality assurance is particularly important.Finally, the design of the heater in the swing of the bodies, three automatic conversion pressure on the agencies, and the ratio of gas flow control hardware and software as well as the welding process control hardware and software and so on a set of successful research and development for mobile air-rail welding automatic control system. The system has a swing of the heater, placed on the frequency of adjustment and control, automatic welding of the pressure conversion and regulation, oxygen and acetylene gas flow control,manual control, welding process parameters and display settings and other functions. The gas pressure rail welding process control and the gas flow,pressure and time of the precise control of process parameters. Using touch-screen LCD model, the direct input,modify the parameters of welding; welding after the completion of the direct printing of welding parameters, including the date, operators,ail welding parameters, such as the public works department needs the information.The results showed that the use of the site: a new control system is stable and reliable, easy to use, high-precision control, adjust the parameters of flexibility and the use of the device greatly reduced the labor intensity of workers, ruled out the man-made factors, to ensure the quality of welding.