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Upholding the corporate spirit of “Integrity, Harmony, Pragmatism, and Innovation,” we remain committed to a business philosophy that puts people first, embraces technological innovation, and emphasizes integrity and pragmatism.
Let’s talk about the forming methods for reducing tees.
Release time:
Jan 06,2022
The reducing-diameter forming process for reducer pipes involves placing a tube blank—whose diameter at the larger end matches that of the reducer pipe—into a forming die. Under axial compression along the axis of the tube blank, the metal flows into the die cavity and undergoes contraction to achieve the desired shape. Depending on the magnitude of the diameter reduction in the reducer pipe, the process can be carried out in a single pressing step or multiple pressing steps.
The reducing-diameter forming process for reducer pipes involves placing a tube blank with a diameter equal to the larger end of the reducer pipe into a forming die. Under axial compression along the axis of the tube blank, the metal flows into the die cavity and undergoes contraction to achieve the desired shape. Depending on the magnitude of the diameter reduction in the reducer pipe, the process can be carried out in a single pressing step or multiple pressing steps.
As shown in the “Diagram of Diameter-Reducing Forming for Concentric Reducing Pipes,” the diameter-expanding forming process uses a tube blank with a diameter smaller than the larger end diameter of the reducing pipe. An internal punch is used to expand the tube blank along its inner diameter. This diameter-expanding process is particularly effective in handling reducing pipes with significant diameter variations that would otherwise be difficult to form using the conventional diameter-reducing method. In some cases, depending on material properties and product-forming requirements, the diameter-expanding and diameter-reducing methods may be combined in a single operation.
During the process of diameter reduction or expansion deformation, cold pressing or hot pressing should be selected based on different materials and varying diameters. Under normal circumstances, cold pressing is preferred whenever possible; however, hot pressing is recommended for situations involving repeated diameter changes that lead to severe work hardening, cases with relatively thick wall thicknesses, or when working with alloy steels.
In addition to using steel pipes as raw material to manufacture reducer fittings, for certain specifications of reducer fittings, steel plates can also be formed into reducers through a stamping process. The shape of the die used for stretching is designed based on the inner and outer dimensions of the reducer fitting; after the steel plate is cut to size, it is stamped and stretched into shape using this die.
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