2. Set the position of the steel plate to ensure the maximum size of the surplus material, so that the surplus material can be used.
3. At ordinary times, ensure the length and size, width and bottom size ≤ 2mm. The blanking dimension tolerance of high bar should be the positive tolerance of the big end of each bar; General: 0-2m. Take negative tolerance for small head, adjust the size of -2-0mm, and finish it with cutting and adjusting machine and automatic cutting machine.
4. Equipment: Check the operation of the rolling shear equipment during shearing, remove the sundries on the track, and keep the equipment in good operation. 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. Specific precautions are as follows:
1. Before bending: firstly, remove the slag from the plate to ensure that the mold is not crushed by the slag during bending.
2. Check the length, width and straightness of the metal plate, and the straightness shall be ≤11000. If the straightness meets the requirements, correct it, especially for polygonal rods.
3. Increase the bending depth of the bending machine and determine the placement position of the sheet metal.
4. Draw a line on the paper correctly, with an error of ≤ 1 mm.. 2.5 Correct alignment, correct bending, minimize pipe joints, and at the same time, the height and bottom edge of both sides shall not exceed 5 mm The purpose of plastic spraying is to be beautiful and to prevent corrosion.
1. polishing: polish the surface of galvanized pole with polishing grinding wheel to ensure smooth and flat pole surface.
2. Straightening: Straighten the polished lamp post and reshape the mouth shape. The straightness of light pole must reach11000, and the caliber requirement: small column ≤1mm; High pole ≤ 2mm. 1. Treat all door panels after galvanizing, including zinc hanging, zinc leakage and zinc storage in keyhole.
2. When drilling screw holes, the electric drill must be perpendicular to the door panel, and the gaps around the door panel should wait until the door panel is smooth.
3. After the screws are fixed, the door panel must not be loose, and it must be fixed firmly to prevent it from falling off during transportation.
4. Plastic powder spraying: put the lamp post with the door installed in the plastic spraying room, spray the color of plastic powder according to the requirements of 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 of plastic powder such as adhesion and smoothness. Factory inspectors carry out ex-factory inspection, and the ex-factory inspectors carry out item-by-item inspection according to the items of lamp post inspection. The inspector shall make records and file them at the same time, and the goods can be delivered only after the inspector signs them.