Product Details
Wonderful use of bridge steel plate
Bridge steel plates are mainly used for erecting railway bridges, highway bridges, sea crossing bridges, etc. It is required to have high strength, toughness, bear the load and impact of locomotive and vehicle, and have good fatigue resistance, certain low-temperature toughness and atmospheric corrosion resistance. The steel for bolted welded bridge should also have good welding performance and low notch sensitivity.
In fact, both special plates for bridges and other types of steel plates are flat steel poured with molten steel and pressed after cooling. The steel plate is flat and rectangular, which can be directly rolled or cut by wide steel strip. Steel plate can be divided into hot rolling and cold rolling according to rolling.
By analyzing the name of bridge special plate, we can clearly understand that bridge special plate is mainly used in bridge construction. Moreover, the special plate for bridge has high low-temperature toughness, good plastic toughness and large deformation capacity. It is especially suitable for working in the northern region with severe cold climate. It is mainly used in bridge steel members, members and box girder structures of steel bridges requiring good low-temperature impact toughness.
These are just some information about bridge special plates. I hope you can have a simple understanding of bridge special plates through these information. However, if you want to understand bridge special plates, you still need to master more information about bridge special plates.
Carbon steel for bridge construction includes a3q for riveting bridge structure and 16q for welding bridge structure; Low alloy steels for bridge structures include 12mnq, 12mnvq, 15MnVNq, 16Mnq, etc. The surface of the bridge steel plate shall be free of cracks, bubbles, scabs, folds, inclusions and delamination. The surface defects of bridge steel plate are allowed to be cleaned. The cleaning depth shall not be greater than half of the steel thickness tolerance from the actual size, and the thickness shall be guaranteed. The cleaning place shall be smooth without edges and corners. This steel plate also has many advantages. Its construction is fast and simple, and there is no need to increase the section size and weight of the strengthened components. And its end anchorage is very important. If it is not handled properly, it will cause tearing off, which belongs to brittle failure. Moreover, when the original component is in the state of high stress, the unloading method is suitable. If the temperature of the base course is below 5 ℃, the steel bonding method needs to be supplemented by heating measures to speed up the curing. The structure of negative moment section of frame joint is difficult to deal with, so it is suitable to adopt local amplitude modulation method and paste the beam bottom first. When an appropriate amount of aluminum is added to the bridge steel plate, it is easy to form transverse cracks on the surface of slab and finished products. Attention must be paid to the matching process of continuous casting speed, cooling water volume and straightening temperature. Reliable manufacturers should also be selected when purchasing bridge steel plates. The quality of bridge steel plates produced by our factory is guaranteed. Welcome to call for consultation.
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