In fact, the manufacturing process of the finished stent is not simple, and high-quality products often have multiple technical patents. The following is an example of an assembled steel solar mounting bracket.
First, high-quality section steel usually has a high-level galvanizing process. According to the requirements of national standards, the average thickness of the galvanized layer should be greater than 50μm, and the minimum thickness should be greater than 45μm. In fact, although the average thickness of the galvanized layer of many products can meet the requirements, the minimum thickness is less than 40μm, and pitting corrosion often occurs in actual use. The corrosion rate of halogen to steel is very fast, and within one year may cause the weakening of the overall solar mounting brackets, causing safety hazards. Therefore, it is not easy to achieve a highly uniform galvanizing process.
Secondly, the connection of section steel and steel is a technical difficulty. A complete set of effective connection methods includes not only the clever ideas on the connecting piece, but also the design of the channel steel back hole and the occlusal tooth. This involves various iron and steel metallurgical technologies such as stamping and casting.
In addition, double-sided channel steel used for bearing larger loads must be welded back to back. There is a big gap between the levels of various welding processes. Pressure laser welding can ensure the uniform connection of the full section, and the two channel steels are completely integrated and bear the force together; while the electric welding technology can only fix the two channel steel parts together, and the force form is closer to the laminated beam. In order to improve the bearing capacity of some section steels, cold rolling of stiffeners is added to the channel steel.
In short, there are many technical difficulties in the production process of the assembled section steel bracket, which requires metallurgical engineering and technical personnel to overcome technical barriers and further reduce its use cost.