China st52 mild steel plate sheet/ plate

st52 mild steel plate, WQ960EZ25 quenched and tempered steel has excellent welding performance: when the composition is designed, the carbon content, carbon equivalent and thermal sensitivity coefficient are greatly reduced to improve the welding performance, so it has excellent welding joint performance, which can meet the requirements of bridges, buildings, cranes, shipbuilding, vehicles and Welding requirements for large structural parts.

When automatic steel plate cutting is carried out, the distance difference between the steel plate hanging from the steel plate to the gas cutting platform should be adjusted to within 5mm.When semi-automatic cutting is carried out, the guide rail should be placed on the plane of the steel plate to be cut, and then the cutting machine should be placed lightly on the guide rail.Make one side of the cutting torch face the operator, choose the cutting nozzle according to the thickness of the steel plate, adjust the cutting straightness and cutting speed.

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Oxygen (O) is a harmful element in steel such as st52 mild steel plate. Although manganese, silicon, iron and aluminum are added to deoxidize the steel at the end of steelmaking, they can not be removed completely. During the solidification of molten steel, the reaction of oxygen and carbon in the solution will produce carbon monoxide, which can cause bubbles. Oxygen mainly exists in the form of FeO, MnO, SiO2, Al2O3 and other inclusions in the steel, which reduces the strength and plasticity of the steel. Especially, it has serious influence on fatigue strength and impact toughness.