A multi-directional compound extrusion die and method for a large-size flange three-way valve body

Abstract

The invention discloses a multi-direction combined extrusion die for a large-dimension flange three-way valve body. A die chamber is partitioned into a middle die chamber and a side flange die chamber, the die is simple in structure and convenient to use, a blank does not need to be manufactured, metal in the molding process can be controlled to flow reasonably, the folding defect is effectively avoided, and the product quality is improved. The invention further discloses a multi-direction combined extrusion method for the large-dimension flange three-way valve body. The multi-direction combined extrusion die for the large-dimension flange three-way valve body is used, the middle die chamber and the side flange die chamber are used, the metal in the molding process can be controlled to flow reasonably, and the folding defect is effectively avoided; by means of the control method that a lower extrusion tray retreats first and then an upper extrusion tray carries out feeding, the metal die filling quality of the flange die chamber can be effectively improved; by means of the control method, the molding quality of materials can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of plastic forming of metal materials, and in particular relates to an extrusion forming die and process of a three-way valve body with a large-size flange. Background technique [0002] see figure 1 and figure 2 As shown, the three-way valve body with a large-size flange is a common structural form in the pipeline transportation industry. At present, it is mainly produced by forging. When using the free forging method to form a three-way valve body forging with a large-size flange, it needs The flange structure of the valve body is obtained by removing a large amount of material through mechanical processing, which not only reduces the material utilization rate, but also the metal flow line of the product is discontinuous, which in turn affects the service life of the workpiece; Improve the above defects, but due to the large diameter of the flange on the product side, it is difficult to fill the mold ca...

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Problems solved by technology

[0002] see figure 1 and figure 2 As shown, the three-way valve body with a large-size flange is a common structural form in the pipeline transportation industry. At present, it is mainly produced by forging. When using the free forging method to form a three-way valve body forging with a large-size flange, it needs The flange structure of the valve body is obtained by removing a large amount of material through mechanical processing, which not only reduces the material utilization rate, but also the metal flow line of the product is discontinuous, which in turn affects the service life of the workpiece; Improve the above defects, but due to the large diameter of the flange on the product side, it is difficult to fill the mold cavity, and it is easy to produce folding defects; the inner hole cannot be formed, the material utilization rate is also low, and the shape will produce large flashes, and it is necessary to increase cutting Side process

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