Eight technical requirements for welding quality of hopper bottom silos

In the construction process of hopper bottom silos, welding is one of the essential work items. The whole steel silo needs to withstand pressure and bear weight, so the welding quality requirements of the joints of the plates and the brackets are very high. Today we will mainly explain the eight technical requirements for the welding quality of hopper bottom silos.

1. Before the construction of large steel silo, welding construction skills should be formulated or welding skills lessons should be compiled according to the welding skills judgment statement.

2. First weld the inner weld, then weld the outer weld. The radial long weld should adopt the symmetrical welding method of the interval seam, and the welding should be withdrawn from the center to the outside in sections.

3. The welding equipment should meet the requirements of welding skills and welding materials.

4. The welding of positioning welding and tooling should be performed by qualified welders, and the arc should not be struck on the parent material or the finished weld.

5. Harmful defects such as scratches with a depth exceeding 0.5 mm, arc scratches, and weld scars should be polished and smoothed, and the thickness of the steel plate after polishing should not be less than the nominal thickness of the steel plate minus the negative error value.

6. Before welding, check the assembly quality, remove rust, moisture and dirt within 20mm on the groove surface and both sides of the groove, and make it fully dry.

7. When welding the top plate of a large steel silo with the edge angle steel, the welds are symmetrically and evenly distributed, and the welds are withdrawn in sections in the same direction.

8. For welding the steel silo wall, first weld the vertical welds, then the circumferential welds. After welding the longitudinal welds of the two adjacent circles of wall panels, weld the circumferential welds in between; welders are evenly distributed and welded in the same direction.

9. When the defect depth or grinding depth exceeds 1mm, repair welding should be performed and polished to make it smooth.

The above are the technical requirements for the welds of the hopper bottom silos. I hope it will be helpful for everyone to weld the steel silo in the future.

Written by

Shandong Shelley Grain Steel Silo Co., Ltd

Editor Jin

www.grainstoragesilos.com

WhatsApp : +86-18653877118

Email : shelley@cnshelley.com