Technical requirements of steel bending pipe and analysis of factors affecting the quality of steel

Steel bending pipe is produced step by step and then made into finished products. During the entire production process, because there is a requirement that the steel pipe must be bent, and the bending of the steel pipe requires some technology, the degree of bending is also different, so what are the technical requirements used in the entire production process?

1. Online heat treatment of the weld of the closed section can offset the welding stress of the steel bending pipe and improve the weld structure. The entire cold-formed steel is annealed or normalized to offset the stress. The mechanical properties of cold-formed steel include strength, tensile strength, and elongation after fracture.
2. There shall be no bubbles, cracks, scars, wrinkles, inclusions, or delamination on the surface of the steel bending pipe. Slight pits, protrusions, indentations, hairlines, scratches, and pressed iron scales not exceeding 10% of the nominal thickness are allowed. Surface defects should be cleaned by grinding, but the thickness of the cold-formed steel after cleaning shall not be less than the allowable thickness.

Therefore, the above technology is used in the production of steel bending pipe. With the increase in bending requirements and pipeline requirements, the technology used in pipelines will become more and more advanced. The burrs on the pipeline should be cleaned in time during the bending process. The quality of steel bending pipe is an aspect that many people pay attention to. The quality determines the later processing and construction. Therefore, in the production process, quality is really important. So what are the factors that affect the quality of steel bending pipe?
1. The accuracy of the bending tire is one of the factors affecting the quality of steel bending pipe. In the manufacturing process of the bending tire, in addition to the restrictions on specifications and sizes, the bending process also requires users to select the corresponding bending tire according to the diameter of the steel bending pipe.
2. For users to refer to the relationship between pipe diameter and wall thickness, according to the pipeline processing acceptance standard, reflect the influence of relative bending radius and relative wall thickness on pipeline quality. During pure bending, under the action of external force, the outer arm wall of the neutral layer is thinned by tensile stress, and the inner side is subjected to compressive stress, effect, and thickening, and the combined force changes the cross-section of the pipe.
3. The bending function and appearance erosion of the pipeline itself will also affect the quality of the steel bending pipe. Observe the processing function and surface corrosion.

The quality of steel bending pipe is easily affected by the above factors, especially in the production process. You should pay attention to it when producing and bending the pipe. After all, many factors may affect the quality of the pipe.