What are the production processes of lamp poles?

The production technology of lamp pole adopts Q235 steel plate of Shanghai Baosteel. Processing technology. The technological process of lamp pole manufacturing: (1) blanking →(2) bending →(3) welding →(4) mending and polishing →(5) shaping →(6) trimming →(7) assembling bottom plate →(8) welding bottom flange and rib plate →(9) punching → (/kloc-0) Before cutting, adjust the inclination of the slitting machine to match the required longitudinal cutting size. Set the position of the steel plate, ensure the maximum size of the surplus material, and use the surplus material. The length and size shall be guaranteed by the opening, and the width and size shall be ≤ 2mm. The blanking dimension tolerance of high rods is positive at the big end of each rod: generally 0-2mm. Small head takes negative tolerance, and after adjusting the size of -2-0mm, it will be automatically cut off by the slitter. Equipment: Before cutting, check the running situation of the rolling shear equipment, remove the sundries on the track and keep the equipment in good running condition. Bending is the most critical process in lamp pole production. The bending of the lamp post directly affects the quality and cannot be repaired after bending. The specific attention is as follows: before bending: firstly, remove the slag from the sheet to ensure that the mold will not be crushed by the slag during bending. Check the length, width and straightness of the metal plate, and the straightness shall be ≤11000. If the straightness does not meet the requirements, correct it, especially for polygonal rods. Adjust the bending depth of large bending machine and determine the position of sheet metal. Scribe the plate correctly, with an error of ≤ 1mm, correct alignment and correct bending, and minimize the number of pipe joints, with the height of both sides not exceeding 5 mm..

When welding, the pipe defects behind the pipe bender are welded by straight seam, because the welding is semi-automatic. The main reason is that the welder has to bear more responsibilities, and the welding loose position and basic parameters should be adjusted at any time during the welding process. Ensure the flatness of the weld. Grinding grinding is to repair the defects of tube blanks after automatic welding. Repair personnel should check them one by one, and repair welding should be carried out where defects are found. After the repair welding is completed, it should be polished again, and the welding position after polishing should be basically the same as that of automatic welding.

The forming process includes straightening the lamp pole and rounding the two ends of the blank pole and the size of the diagonal of the polygon. General tolerance < 2mm. The straightness error of blank bar should not exceed ≤ 1.5/ 1000. Head on? The trimming process is to flatten the two ends of the bent tube blank to ensure that the nozzle is perpendicular to the center line without angle and unevenness. At the same time, the end face is polished after flattening; Install the bottom plate? The key of spot welding between the bottom flange and the rib plate is to ensure that the bottom flange is vertical to the center line of the lamp post, and the rib plate is vertical to the bottom flange and parallel to the bus bar of the lamp post. Weld the bottom flange and rib? Welding requirements refer to national welding technology to ensure welding quality. Weld should be beautiful, without air holes and slag inclusion. After the zinc plating is cooled with water, in order to prevent white rust (zinc oxide) on the galvanized surface, chromic acid treatment must be carried out on the galvanized surface. At this time, a yellow passivation solution will be produced on the surface, which can naturally fade after the rain clears. Plastic spraying. Polishing: Use polishing grinding wheel to polish the surface of galvanized pole to ensure that the surface of pole is smooth and flat. Straightening: Straighten the polished lamp post and reshape the mouth shape. The straightness of the light pole must reach11000, the small diameter pole ≤ 1mm, and the high pole ≤ 2mm. Plastic powder spraying: spray the door-mounted lamppost into the room, spray the color of plastic powder according to the production plan, and then enter the drying room. The temperature and heat preservation time of the drying room must be strictly in accordance with the requirements of each plastic powder to ensure the quality requirements such as the adhesion and smoothness of the lamp post. The ex-factory inspection is conducted by the quality inspector of the factory department. The ex-factory inspector must inspect the items of light poles item by item, and the inspector must make records and file them. At the same time, the inspection sheet must be signed by the workshop director and quality inspector before delivery.