Angle steel can form various stress components according to different requirements. Because angle steel has good weldability, plastic deformation performance and certain mechanical strength in application, it is widely used in metal components, frames of engineering structures and various building structures. However, due to improper processing, the angle steel often produces cracks, so how to determine the external crack of the angle steel? The angle steel manufacturer will show you.
Understand the structural shape of the inspection area, analyze the stress condition of the angle steel, confirm the detailed inspection method, and correctly determine the crack through the separation and processing process of the inspection instrument. The difficulty of detecting the external crack of angle steel lies in the irregular shape of the edge of angle steel and the existence of excessive arc. When detecting with ultrasonic straight probe, the detection direction is single and it is easy to miss the detection. When detecting with angle probe, it is difficult to determine the defect due to the formation of end angle reflection.
The direction of the crack generated by bending is perpendicular to the length direction of the angle steel, and the crack direction is parallel to the length direction of the angle steel. The crack is slender and sharp at both ends. Therefore, the crack is generated in the rolling process. After bending, the crack occurs and spreads, and the crack characteristics become more and more obvious. If the crack direction is perpendicular to the length direction of the angle steel, the crack is produced in the bending process. Angle steel structure applies angle steel, commonly known as angle iron, which is a long steel strip with both sides perpendicular to each other.
There are equal angle steel and unequal angle steel. Equal width on both sides of equal angle steel. Specifications are in mm side width × Side width × Side thickness. For example, "∟ 30 × thirty × 3 "refers to equilateral angle steel with side width of 30mm × The edge thickness is 3mm It can also be expressed by model, which is the centimeter of side width, such as ∟ 3 # In the first mock exam, the thickness of different side faces in the same model is not pointed out. Therefore, the edge width of filling angle steel in the contract and other documents is? To avoid separate models.
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