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Corrosion Protection Processes and Quality Control for Steel Structures

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 Corrosion Protection Process for Steel Structures Corrosion protection processes for steel structures are essential for ensuring that steel structures remain in good condition over the long term. This article provides a detailed overview of the various steps involved in these processes, including surface preparation, priming, coating application, quality control, and final inspection and acceptance. Surface treatment Surface preparation is the first step in the corrosion protection process. Its primary purpose is to remove dirt, grease, rust, and other contaminants from the surface of steel structures to improve coating adhesion and corrosion protection. Surface preparation includes the following steps: Cleaning: Removing grease, dirt, and dust from the surface of steel structures using solvents or detergents. Degreasing: Removing grease and wax-like substances with an alkaline degreaser to improve coating adhesion. Rust Removal: Removing rust and other corrosion products from the...
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Three construction methods of steel structure space frame

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 1、Aerial assembling method

　　Steel space frame with high altitude assembly method for installation, is first set up in the design position at the assembly bracket, and then use the crane to the space frame components pieces (or sub-blocks) up to the air design position, in the bracket for assembly. This method sometimes do not need large lifting equipment, but assembling bracket dosage, more work at height. Therefore, the high-strength bolts, steel space frame made of steel sections or bolted ball nodes of the steel pipe space frame is more appropriate, there are still some steel space frame with this method of construction.

　　2、Overall installation method

　　The whole installation method is the first space frame on the ground assembled into a whole, and then lifting equipment will be lifted to the overall design position to be fixed. This construction method does not require a tall assembly bracket, less overhead work, easy to ensure the quality of welding, but the lifting capacity of the lifting equipment needed, more complex technology. Therefore, this method is more suitable for the ball nodes of the steel space frame (especially the three-way space frame and other rod more space frame). According to the different equipment used, the overall installation method is divided into multi-machine lifting method, lever lifting method, jack lifting method and jacking method.




　　3、Multi-machine lifting method

　　This method is used for small and medium-sized space frame structure in height and weight. Before installation, the space frame on the ground for staggered assembly operations (i.e., assembly position and installation axis staggered a certain distance to avoid the position of the column). Then use multiple cranes (mostly crawler cranes or automobile cranes) to assemble a good space frame overall lifting to the top of the column above, in the air after shifting down in position fixed.

　　space frame assembly

In order to prevent the overall lifting of the space frame and the column touch, staggered distance depends on the space frame lifting process space frame and columns or columns between the legs of the net distance, generally shall not be less than 10 ~ l125px, and at the same time, to consider the convenience of the space frame assembly and the convenience of the crane work in air displacement. When needed, can consult with the design unit, will be part of the edge of the space frame of poles left until after the space frame lifting and then welding, or change part of the space frame affecting the lifting of the columns.

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What is a coal bunker?

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What is the difference between a single-layer reticulated shell and a double-layerreticulated shell?

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What are the differences between bolted ball grids and welded ball grids?

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