Mold for one-shot forming of flow-controlled multi-dimensional elbow and method of use thereof

Abstract

The invention discloses a mold for a flow-control-type one-time formed multidimensional bent pipe fitting. The mold comprises an extrusion barrel lining, a male mold body, a female mold body, a main extrusion rod and lateral extrusion adjusting and controlling rods; a sizing band is arranged at one end of the male mold body, four metal flowing channels which penetrate through the male mold body in the axial direction and have the same size are evenly distributed in the male mold body, a blank material cavity used for containing blank materials is formed by the end face of the male mold body and the inner wall of the main extrusion rod, the main extrusion rod is arranged in the blank material cavity, the shape of the main extrusion rod is matched with that of the blank material cavity, and the blank materials in the blank material cavity are extruded; the flowing sectional area of all the metal flowing channels is changed by adjusting the stretching amount of all the lateral extrusion adjusting and controlling rods, so that the bent pipe fitting achieves multidimensional forming. The metal flow volume in a certain direction is changed by changing the amount that the lateral extrusion adjusting and controlling rods stretch into the metal flowing channels, and therefore the manufactured bent pipe fitting can be switched between bent forming and linear forming at any time; the structure is reasonable, the forming processes are reduced, and multiple bent pipe fittings can be manufactured through one mold.

Description

technical field [0001] The invention relates to the field of thermal processing, in particular to a mold for forming and extruding a multi-dimensional elbow fitting at one time by controlling the flow of metal in a split hole and a method for using the same. technical background [0002] Because the bent pipe parts are easy to meet the requirements of light weight, high strength and low consumption, etc., they have been widely used in high-tech fields such as aviation and aerospace. Used as metal structural parts. With the development of high-tech fields such as aviation and aerospace, the demand for bent pipes is becoming more and more thin-walled and integrated with processing. There are two main methods of traditional bending pipe processing, one is push bending, also called extrusion Bending, there is another kind of bending. Regardless of the above method, two sets of equipment are required, namely (1) equipment for making metal billets into straight pipes, which can ...

AI Technical Summary

Problems solved by technology

The equal-wall-thickness elbow obtained by this method has the following disadvantages: (1) The length of the extruded elbow is low due to the obstruction of the fixed mandrel device, which cannot meet the common conditions of use; (2) The production of multi-dimensional elbows cannot be realized , which can only be extruded and bent in the same plane; (3) After the extrusion is completed, the equal-wall-thickness elbow is firmly stuck on the mandrel, which is difficult to remove, or the pipe wall is scratched during the removal process

[0007] To sum up, there is currently no method for integral forming from solid metal blanks to multi-dimensional bent pipes; in addition, in split-flow welded extruded pipes, the extruded straight pipes often have A certain degree of bending, production and design personnel do everything possible to avoid this defect, but no use of this defect to squeeze the elbow

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