Welding and fixing of stainless steel grids: This is a common method of fixing the steel grids. Generally, 4 points around the steel grids are welded, and basically a stainless steel grid can be fixed. If there are often heavy objects, you should add more. Welding points. The advantage of welding and fixing the stainless steel grid is that it is simple, strong, and relatively economical.
However, the defect is that when welding, the galvanized layer of the hot-dip galvanized steel grating will be damaged, which will cause the welding point of the steel grating to be very rusty. Of course, we can use spray paint to compensate. Welded stainless steel gratings are generally used for long-term use and are generally not often disassembled.
Device clip fixing: This kind of steel grid plate fixing method is also very common, generally there are more steel grid plates carried on mechanical equipment. The advantages of the stainless steel grid device clamp fixing are convenient for disassembly, no need for welding points on the beam, and the galvanized layer will not be damaged. However, the price of each set of device clips is not cheap. Generally, every square meter needs to add about 10 yuan to make the cost. However, in some special projects, where there are no welding points on the supporting steel beam and the zinc layer cannot be damaged a little, it can only be fixed with a steel grid plate clamp.
Angle steel inlay fixing method: This method is generally used in the steel grating groove cover plate on the pipe trench. Two angles are fixed at the two ends of the ditch, and the steel gutter cover is embedded between them. This method eliminates the need for welding and clamping with the steel grid device. The angle steel fixation method is simple and useful, and can be easily taken down for equipment maintenance under the steel grating. The defect is simply lost and stolen. Therefore, the angle steel inlay fixing method is generally used in factories and workshops, and is not suitable for outdoor use.
When the steel grid plate is treated with hot-dip galvanized surface, the steel grid plate will be deformed to some extent when it is exposed to high temperature. Deformed. There is internal stress in the matrix of the steel grating.
If at the time of welding the steel grid plate, the flat steel is not straightened, but the flat steel is placed directly on the mold for welding, the appearance looks straight, in fact, the steel grid plate has a relatively strong internal Stress, if combined with a strong external force, the internal stress will show up, and the shape of the steel grating becomes a horizontal bow. So how to prevent the deformation of the steel grating? Generally pay attention to the following points.
When welding stainless steel gratings, straighten the flat steel first and then perform process welding. If the flat steel shows a curved twist, at the time of welding, the flat steel is not straightened, but the flat steel is placed directly on the mold for welding, and the appearance looks straight, in fact at this time Steel grid plates already have relatively strong internal stresses.
Before pickling and hot-dip galvanizing, the steel grid plate is treated to remove internal stress. If the internal stress manifests itself, the shape becomes a horizontal bow. Hot dip galvanizing has not been paid attention to, but presents this situation. In modern industrial production, such problems generally do not occur.
The base of the stainless steel grating must be at least three, and it can be placed at the two ends and the center. Do not just put it on the two ends and not the center. Pressing more steel gratings on it will cause deformation and make it different It should be placed smoothly on the horizontal surface during transportation to make it evenly stressed, and it is not easy to be hit hard during loading and unloading. It should be lifted gently.