A709 Gr50 plate is a structural steel for bridge, also known as high strength low alloy steel plate. A514 grade P high strength steel plate, A709 Gr50 steel is widely used in engineering structures, such as building steel structure, construction machinery, mining machinery, truck, bridge, pressure vessel, etc., especially for construction and engineering machinery parts requiring good weldability and toughness.
Laser cutting is that the horizontal laser beam emitted by the laser changes into a vertical downward laser beam through the 45° total reflector, and then focuses through the lens, forming a tiny spot at the focal point. When the spot hits the material, the material is heated to the vaporization temperature quickly, and evaporates to form a hole. With the movement of the beam on the material such as A514 grade P high strength steel plate, the auxiliary gas (carbon dioxide gas, oxygen, Nitrogen, etc.) blow away the melted slag, make the hole continuously form a very narrow width (such as about 0.1mm) cutting seam, and complete the cutting of materials.
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Primary processing, steel plate cutting processing cutting method, it is a flame cutting, because it to the accuracy requirement of the cutting size is not very high, the thickness of the A514 grade P high strength steel plate plates in a certain range can be a good cutting quality and cutting effect, and the cut surface can be very smooth, however, it is important to note that in this work, is the need to pay attention to steel plate deformation at high temperature.
