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Definition and Classification of Reducing Pipe Fittings
Release time:
Sep 29,2022
When it comes to reducers, most people may not be very familiar with them, but at least some of you probably have a general idea of what they look like. Reducers are divided into concentric reducers and eccentric reducers. These fittings are suitable for situations where the fluid flow rate doesn't change significantly, even when the flow conditions in the pipeline undergo changes—such as increases or decreases.
Speaking of Reducing pipe You may not be very familiar with it, but more or less everyone has some idea of what it looks like. Reducing pipes are divided into concentric reducing pipes and eccentric reducing pipes. When the fluid flow in a pipeline changes (e.g., increases or decreases), this type of pipe fitting is suitable for situations where the flow velocity requirements remain relatively stable. At the pump inlet, to prevent cavitation and ensure proper alignment with instrument connections (such as those on flow meters and control valves), the reducing pipe should be aligned precisely with the instrument connections.
The commonly used forming processes today are shrinking, expanding, or a combination of shrinking and reducing-diameter pipe manufacturing—today, the manufacturer will take you through an overview of these processes.
Shorten/Expand Molding
Die forging involves placing a pipe with a diameter equal to the larger end diameter of the transistor into a forging die, then applying axial pressure along the blank’s axis, causing the metal to flow and shrink within the cavity. Depending on the magnitude of the shape transformation, the process can be classified as either single-stage forging or multi-stage forging.
In diameter-expanding forming, a tube blank with a diameter smaller than the larger end diameter of the non-uniform section is used, and then an internal die is employed to extend the shape along the inner diameter of the tube blank. Expansion forming tends to produce significant diameter variations in the tube, making it difficult to achieve precise results through contraction forming alone. Therefore, depending on the material and the specific requirements of the product, it is sometimes necessary to combine expansion and contraction processes.
During the compression process involving both shrinkage and expansion deformation, hot pressing or cold pressing should be selected based on the specific material and the required transition conditions. However, in general, cold pressing is more commonly chosen. It is recommended to opt for hot pressing when multiple transitions result in severe work hardening, when the wall thickness is relatively thick, or when the alloy material being used is suitable for hot pressing.
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