Grid Accessory Rod Manufacturing Process
The raw materials of the steel pipes should be reviewed before cutting, and they can only be delivered after they are qualified. The HID-900MTS CNC lathe water pipe intersecting line cutting machine is used for cutting, and the fiber laser cutting quality of grid parts meets the technical standards. The cone head of the grid parts is cut from round steel. The cone head blank cannot experience defects such as burning and cracks before forging. After forging, quenching process is required to remove the oxide scale. After the cone head is forged and shaped, the milling machine is used to process the indoor stairs that complement the cone head and the inner wall of the rod tube, the plane design of the small end of the cone head, and the electric welding weld. The flatness of the two sides of the cone head should meet the technical standards. When assembling the truss parts such as cone heads and pipe fittings, ensure that there is a 2-2mm gap between the steel pipe secondary beam and the embedded parts in the middle of the cone head, and the flatness of the top of the cone head on both sides of the rod and the steel pipe dividing line is required to be 20% 0.5R, R is the radius of the middle and lower parts of the cone head, and the unevenness of the dividing line between the inner threaded circular hole of the cone head on both sides of the rod and the steel pipe dividing line does not exceed 0.01 of the pipe diameter. After the rod assembly line is completed, the NXC-2×500KR ball truss rod double-head automatic welding machine is used for arc welding. The welding of the truss parts should be tested for tensile strength, and its bearing capacity test index value should be considered in accordance with the requirements of the specification. There are various installation forms of anchor screw ball steel frame structure truss, mainly: steel pipe steel pipe scaffolding comprehensive service platform loose weighing; high-altitude loose weighing; ground assembly, high-altitude block hoisting connection; ground assembly, lifting and pulling rod overall hoisting; high-altitude comprehensive service platform assembly, block guide rail load assembly, etc. The top priority of the construction quality of grid parts is to control the loose bending stiffness and load control of the spherical grid. In terms of load control, it is forbidden to add loads at will before the support structure is fully and properly fixed, so as to avoid deformation of the spherical grid and even collapse accidents.