Where are high-strength bolts often used?

2023/07/21

High-strength bolts are an indispensable fastener in industrial production. They are mainly used in industrial machinery and equipment, such as fastening connections in large ships, railways, vehicles, bridges, and high-rise buildings. The joints in important and key parts, such as cantilever beam arches, are fastened with high-strength bolts to enhance the overall strength of the conveying equipment and make it more wind-resistant, earthquake-resistant, vibration-resistant and compression-resistant. Compared with ordinary bolts, high-strength bolts have the following advantages, and are more suitable for long-term stable fastening force under specific conditions of use: 1. High-strength: High-strength bolts are generally made of high-strength steel such as 40Cr steel and 45 steel. The minimum tensile strength is 800MPa, and the fastening force under wind load and heavy load is more reliable. 2. High rigidity: High-strength bolts are generally heat-treated to make them have high hardness and elasticity, and can maintain fastening force under harsh working conditions such as high temperature, high pressure, and high vibration. 3. Good corrosion resistance: The surface of high-strength bolts is polished, chrome-plated, galvanized, etc., which can resist the influence of chemical reactions on the metal surface such as oxidation and corrosion for a long time. 4. Light weight: Since high-strength bolts are made of thinner steel wires, the fastening parts of the same specification are lighter than ordinary bolts, which can reduce the labor intensity of transportation, installation, and disassembly. In all aspects of industrial production, high-strength bolts are widely used. Below, maijin introduces some common application scenarios in detail: Railway transportation field: fastening parts in railway vehicles such as high-speed railways, subways, and light rails, and in structures such as stations and bridges. Due to the high-speed running speed and long-term high-strength operation of the railway, there are higher requirements for fastening parts. High-strength bolts are the first choice to ensure safe and stable fastening. Shipbuilding industry: Hulls, repair accessories and shells of large bulk carriers, passenger ships and warships are fastened and hard riveted with high-strength bolts. Ships operating at sea are prone to severe marine weather and seawater corrosion, and the corrosion resistance and strength of high-strength bolts can effectively enhance the stability of the ship. Infrastructure construction fields such as bridges, road tunnels, and high-rise buildings: fasteners used to connect long-span beams and hoisting wooden frames, such as cantilever beam arches, bridge deck shock-absorbing cushions, etc. In rare large-scale natural disasters (such as earthquakes) and large-scale man-made accidents (such as explosions, fires), high-strength bolts can reduce the damage of the structure itself. Automotive, aerospace and other machinery manufacturing fields: bolts used to connect high-speed rotating parts. With the development of industry, mechanical manufacturing pays more and more attention to manufacturing technology and precision. High-strength bolts have become important accessories for connecting parts, making the operation of parts safer and more reliable in high-speed, high-load, and high-vibration environments. To sum up, high-strength bolts are widely used in various fields. With the continuous progress of industrial technology and increasing demand, high-strength bolts will become more perfect and popular, and become an indispensable part of industrial manufacturing.

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