The welding shrinkage and deformation will inevitably occur in the welding structure of steel structure.Therefore, in the production process, to grasp when to open the hole will greatly affect the product accuracy.So, how much do you know about the hole making process in steel structure processing? Please see the following analysis.

It is very important to grasp the opening time for the size accuracy of the hole group in the connection part of the column and beam engineering site directly affects the installation accuracy of the steel structure.

1. punch one end of the component first, and then punch the other end after assembly, welding and deformation correction.

2. when processing the components processed in Guiyang steel structure, mark the hole position on the top first, and then mark and confirm the drilling after the completion of assembly, welding and deformation correction.

3. after component welding and deformation correction, finish the end face, and then take the finish surface as the benchmark to mark and punch 

4.When marking out, the welding shrinkage, deformation allowance, allowable tolerance, etc. are taken into account, and the hole is punched directly.Mechanical drilling includes electric drill and air drill, vertical drilling machine, radial drilling machine, truss radial drilling machine, multi axis drilling machine and NC drilling machine.

The simplest way to open a gas hole is to install a simple accessory device on the gas cutting nozzle, which can make a φ 30 hole.Drilling die and plate stack drilling hole.This is a kind of hole making method which is not popular in our country at present. It is fixed by fixture. 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 steel structure processing hole making process.In order to get a good quality of steel structure processing, it is necessary to control its hole making process.