Steel structure engineering has the characteristics of high strength, light material, and good overall rigidity. This is mainly due to its materials. So what principles should we follow when selecting its materials? Weifang Tailai Steel Structure has introduced relevant content for you. Let’s take a look together.
1. Load characteristics
The load on the steel structure factory building can be static or dynamic; often, sometimes or occasionally; often fully loaded or not often fully loaded, etc. Appropriate steel materials should be selected according to the above characteristics of the load, and the necessary quality assurance project requirements should be put forward. For structural members directly bearing dynamic loads, steels with better quality and toughness should be selected; for structural members bearing static or indirect dynamic loads, general quality steels can be used.
2. Connection method
Connections can be welded or non-welded. For welded structures, uneven heating and cooling during welding often cause high welding residual stress in the components; welding structures and unavoidable welding defects often cause crack-like damage to the structure; the overall continuity and rigidity of the welded structure It is better to make the defects or cracks penetrate each other; in addition, the high content of carbon and sulfur will seriously affect the weldability of steel. Therefore, the quality requirements of welded structural steel should be higher than that of non-welded structural steel in the same situation, the content of harmful elements such as carbon, sulfur, phosphorus should be lower, and the plasticity and toughness should be better.
3. The working environment temperature of steel structure manufacturing
The plasticity and toughness of steel decrease with the decrease of temperature, and the toughness decreases sharply at low temperature, especially in the brittle transition temperature zone, and brittle fracture is prone to occur. Therefore, for steel structures, especially welded structures, that often work or may work at relatively low negative temperatures, steels with better chemical composition and mechanical properties and brittle transition temperatures that are lower than the working environment temperature of the structure should be selected.
4. Steel thickness
Due to the small compression ratio during rolling, the steel with large thickness has poor strength, impact toughness and welding performance; and it is easy to produce three-dimensional residual stress. Therefore, welded structures with large component thickness should use good quality steel.
We must follow the above four principles when selecting steel structure engineering materials, so we must pay attention when selecting to ensure its quality. If you are looking for various steel components such as steel structure engineering materials, welcome to Weifang Tailai Steel Structure Engineering Co., Ltd. We will serve you wholeheartedly, provide you with high-quality products and services, and create a better tomorrow together!
Post time: Aug-03-2023