Introduction to the process of pipe bending in the process of technology-Goodwill Valve Fittings

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Introduction to the process of pipe bending in the process of technology

Release Date：

25 Jul,2023

Bending processing is appropriate to use the wall thickness of the positive tolerance of the pipe production. High-pressure steel pipe bending radius should be greater than 5 times the outer diameter, other pipe bending radius should be greater than 35 times the outer diameter of the pipe; when manufacturing sewing pipe, the weld should be avoided pipeline; stainless steel pipe should be used for cold bending processing for the elution, aluminum-manganese alloy pipe shall not be cold bending processing for bending processing, while other materials of the pipe bends can be cooled or hot bending. High, medium metal steel pipe does not allow water, low Taigin steel pipe is generally not suitable for water, while the hot bending should be slowly cooled at 5 ℃. Bend processing using hot bending pipe, regardless of the size of the pipe diameter, all according to the regulations loaded with dry fine sand.
The use of high-alloy steel pipe or colored metal pipe, it is recommended that the use of mechanical methods, and when made of sand, do not allow digging. When lead pipe is heated, it is not sanded. In addition to the production elbow temperature, the wall thickness is maintained at 900°C or higher, and wall thicknesses greater than 19 mm should be heat-treated in accordance with the regulations. When processing the pipe, will change the mechanical properties, making the pipe preferably 800 ° C to 900 ° C, the heating temperature should not exceed 1000 ° C, the bending temperature should not be less than 800 ° C. The pipe should be heated to 900 ° C or higher. Hot bending temperature is preferably 950 ° C to 1000 ° C, the heating temperature should not exceed 1050 ° C, the bending temperature should not be less than 800 ℃.

High-pressure bending process should be carefully quality checked during processing, there should be switching procedures between each process. Tubes that should be scrapped should be covered immediately and stored separately. In the process of elution, we must not only use the technical process, but also need to take appropriate control measures. For example, in the process of product processing, if the temperature exceeds a certain range, the surface of the product will show a certain degree of deformation, so that the surface of the product will have a large number of fine cracks. Therefore, the need for reasonable temperature control in the pipe bending process.

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