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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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Quality control of space frame processing

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 The quality control of the space frame processing process is mainly reflected in the following aspects:

1. Special technical disclosure. Before each type of component grid processing, the project must be disclosed: grid processing quantity, completion time and requirements, acceptance standards, problems to be paid attention to in construction, technical assurance measures, protection measures for finished products and semi-finished products, possible accidents and measures, welding by material and welding process parameters, welding sequence, etc.

2. Measurement control. Measurement control runs through the whole process of grid processing, from the inspection of material size, cutting size inspection, component group deviation, component welding Angle size, correction deviation control, pre-assembly size, drilling aperture, paint film thickness and so on. In order to ensure the accuracy of measuring instruments, the use, storage, maintenance and inspection of measuring instruments are required to be carried out in accordance with the provisions.



3, cutting and cutting stage quality control. The quality inspection personnel first obtains the cutting sheet from the technical personnel, and reviews the size and material of the cutting sheet according to the construction drawings. If there is any mistake, it will be fed back to the technical person in charge for scrapping. Secondly, it is to check the actual drawing size, size and material of the construction team after cutting; If it is not correct, it will be fed back to the person in charge of cutting, redrawing the line and cutting the material. Finally, check whether the cutting size is correct according to the allowable deviation of the technical disclosure, and fill in the record.

4, H-shaped steel group stage. Wrong side control: t/10, and not more than 2 mm, ￡is the thickness of the steel plate. Section size control: including height, perpendicularity, center shift. The verticality control of the flange plate to the web plate: b/100, and not more than 2mm, 6 is the width of the H-shaped steel flange. Group on gap control, etc.

H-shaped steel parts splicing requirements, flange plate splicing seam and web joint spacing should not be less than 200mm, flange plate splicing length should not be less than 2 times the width of the plate, web splicing should not be less than 300mm, the width direction is best not splicing.

5, welding stage. Including weld root cleaning inspection (for penetration weld), weld appearance inspection, weld size inspection.

6. Correct cutting. Calibration stage is mainly verticality, distortion detection, qualified into the next process cutting.

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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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