Sometimes the steel of Guiyang steel structure needs to be opened with gas. The easiest way we use is to install a simple accessory device on the gas cutting nozzle of the equipment, which can make a hole of φ 30.Drill the hole with jig and plate stack.This is a kind of steel structure drilling method which has not been popular in China at present. It should be fixed by fixture and the drill sleeve should be made of carbon steel or alloy steel.The upper and lower planes of the drilling formwork shall be parallel, and the deviation shall not be greater than 0.2mm. The center of the drilling sleeve shall be vertical to the plane of the drilling formwork, and the deviation shall not be greater than 0.15mm. The allowable deviation of the overall drilling formwork production shall meet the relevant regulations.Through the above analysis, understand the hole making process in steel structure processing.In order to obtain good steel structure processing quality, it is necessary to control the hole making process.

For the construction of column and beam structure of Guiyang steel structure, the accuracy of hole group size of steel connection can directly affect the accuracy of steel structure installation.It is very important to grasp the opening time.The staff shall punch one end of the component first, and then punch the other end after the completion of assembly, welding and deformation correction.Mark the hole position in advance when processing the components of steel structure processing. After the completion of assembly, welding and deformation correction, mark the line to confirm the drilling process.

After the deformation correction of Guiyang steel structure welding steel, we need to finish the steel end face, and then we can take the finishing surface as the benchmark, draw lines and drill holes.When marking, the welding shrinkage, deformation allowance and allowable tolerance are considered, and the drilling is carried out directly.Mechanical drilling has electric drill and pneumatic drill, vertical drilling machine, radial drilling machine, truss radial drilling machine, multi axis drilling machine, NC drilling machine.