Abstract: In order to improve the reliability of mass production of ZXT large-scale linear vibrating screen after design，aiming at the industrial problem that the manufacturing factors of vibrating screen after large-scale design will have a higher influence on the operation reliability of screen box，the manufacturing process factors affecting the manufacturing quality of vibrating screen box are analyzed and studied. The process improvement measures are put forward from the aspects of raw material quality control，hot processing deformation control，internal stress control，machining accuracy control and assembly process control. The results show that the optimized manufacturing process can reliably avoid the early failure phenomena such as beam fracture and side plate cracking of the vibrating screen box，and prolong the service life of the screen box，thus accumulating rich experience for the production and manufacture of large screen box.

Key words: vibrating screen, screen box, beam, side plate, manufacturing process, welding