Forming method of large long-axis cross forgings and forming device

Abstract

The invention relates to the field of profiling forging of large forgings, and discloses a forming method of large long-axis cross forgings and a forming device. In the method, a prefabricated blank does not need to be forged into a square section, so that the difficulty of the prefabricated blank is reduced; a mode of synchronously carrying out sectional material distribution and forging pressingis adopted, the material dividing part in the upper step of the blank is forged and pressed into a cross shape when a part of the blank is divided; and compared with a traditional mode of drawing after material dividing in the whole section, the method has the advantages that the required heating number is less, forging completed by two-time heating previously can be completed by one-time heating, the forging efficiency is high, and the defects of asymmetry and non-uniform shape caused to the forgings in the drawing process can be reduced.

Description

technical field [0001] The invention relates to the field of profile forging of large forgings, in particular to a forming method and a forming device of a large long-axis cross-shaped forging. Background technique [0002] Forging is an extremely important process for forming large workpieces, and forgings refer to workpieces or blanks obtained by forging and deforming metal blanks. The structure of large long-axis cross-shaped forgings is as follows: figure 1 , 2 As shown, the cross-section of the forging is cross-shaped, the weight is more than 10 tons, and the axial dimension of the forging is larger than the cross-sectional dimension. [0003] For large long-axis cross-shaped forgings, the main steps of traditional forging are billet drawing, longitudinal division, drawing and forming, that is, image 3 , 4 As shown, it is first necessary to forge a large-section square-section blank, then longitudinally press the upper, lower, left, and right four cutting edges, an...

AI Technical Summary

Problems solved by technology

[0004] ①The number of forging fires is too many, not only the production efficiency is low and the energy consumption is large, it is difficult to achieve mass production

[0005] ② After the blank is drawn, it is easy to cause the disadvantages of asymmetrical size and uneven shape of the forging or blank, and the inconsistency of the blank size will seriously affect the subsequent mold forming

[0006] ③The longitudinal upper triangular material distribution is different from the usual horizontal upper triangular material distribution, which has the problem of difficult and cumbersome operation, difficult to align up and down, and symmetrical material distribution from left to right

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