Xinjiang local steel structure

1. Strength

The strength index of steel consists of elastic limit σe, yield limit σy, and tensile limit σu. The design is based on the yield strength of steel. High yield strength can reduce the self-weight of the structure, save steel, and reduce construction costs. Local steel structure manufacturers in Xinjiang say that the tensile strength σu is the maximum stress that the steel can withstand before it is damaged. At this time, the structure loses its performance due to large plastic deformation, but the structure deforms greatly and does not collapse, which meets the requirements of the structure to withstand rare earthquakes. The size of 'σu/σy value can be regarded as a parameter of steel strength reserve.

2. Plasticity

The plasticity of steel generally refers to the property of significant plastic deformation without fracture after the stress exceeds the yield point. The main indicators to measure the plastic deformation ability of steel are elongation δ and area reduction ψ.

3. Cold bending performance

Local steel structure manufacturers in Xinjiang say that the cold bending performance of steel is a measure of the steel's resistance to cracks when plastic deformation occurs during bending processing at room temperature. The cold bending performance of steel is to use the cold bending test to test the bending deformation performance of the steel when it withstands the specified bending degree.

4. Impact toughness

The impact toughness of steel refers to the ability of steel to absorb mechanical kinetic energy during the fracture process under impact load. It is a mechanical property that measures the resistance of steel to impact load and may cause brittle fracture due to low temperature and stress concentration. The impact toughness index of steel is generally obtained through the impact test of standard specimens.

5. Welding performance

The welding performance of steel refers to obtaining welded joints with good performance under certain welding process conditions. Welding performance can be divided into two types: welding performance during the welding process and welding performance in use performance. Local steel structure manufacturers in Xinjiang say that the welding performance during the welding process refers to the sensitivity of the weld and the metal near the weld that does not produce hot cracks or cooling shrinkage cracks when cooled. Good welding performance means that under certain welding process conditions, there will be no cracks in the weld metal and the nearby base metal. The welding performance in terms of service performance refers to the impact toughness of the weld and the ductility performance in the heat affected zone. It is required that the mechanical properties of the weld and the steel in the heat affected zone are not lower than the mechanical properties of the base metal. Our country adopts the welding performance test method of welding process, and also adopts the welding performance test method of usability and usage properties.

6. Durability

There are many factors that affect the durability of steel. First of all, steel has poor corrosion resistance, and protective measures must be taken to prevent steel from corroding and rusting. Protective measures include: regular painting and maintenance of steel, the use of galvanized steel, and special protective measures in the presence of strong corrosive media such as acids, alkalis, and salts. For example, the offshore platform structure uses "anodic protection" measures to prevent jacket corrosion. Zinc ingots are fixed on the jacket. The seawater electrolyte will automatically corrode the zinc ingot first, thus achieving the function of protecting the steel jacket. Secondly, because the damage strength of steel under high temperature and long-term load is much lower than the short-term strength, the lasting strength of steel under long-term high temperature must be measured. Steel will automatically harden and become brittle over time, which is the phenomenon of "aging". The impact toughness of steel materials under low temperature load should be tested. Xinjiang Hongxin Shengyuan Steel Structure Co., Ltd. is a comprehensive professional manufacturer integrating sales, design and installation. The factory covers an area of more than 20,000 square meters and has multiple production workshops for steel structures, C and Z-shaped steel, aluminum-magnesium-manganese plate metal roofs, color steel profiles, sandwich panels, styrene plates, bending parts, rock wool, glass wool, aluminum silicate, etc. It has strong production capacity. The products are exported to all Xinjiang and are exported to Russia, Kazakhstan, Outer Mongolia and other neighboring countries. They are widely used in large factories, warehouses, shopping malls, stadiums, power plants, steel plants, mining and other types of industrial and civil buildings. Since its establishment, the company has been committed to management reform and innovation, and to improving the competitiveness of production speed, efficiency and cost control. Adhering to the purpose of "quality, credibility", and with the support of new and old customers, the company has rapidly developed into a leader in Xinjiang's steel structure industry.