Forging device and forging method for multi-directional die forging of large complex forgings

Abstract

The invention discloses a forging device and a forging method for multidirectional die forging for a large complex forged piece. The forging device comprises a first upper die, a second upper die, a first lower die and a second lower die, wherein a through hole is formed in the sidewall of the first lower die, and a forming pin is arranged in the through hole; the second lower die detachably sleeves the periphery of the first lower die, and an impression corresponding to the through hole is formed in the inner side surface of the second lower die; and the first upper die extrudes a blank intothe space between the first lower die and the second lower die, the second upper die is matched with the forming pin, and horizontal die forging is carried out on the blank to jack the blank into theimpression to form a boss structure. According to the forging device and the forging method for multidirectional die forging for the large complex forged piece, by forming the through hole in the first lower die and arranging the forming pin in the through hole, after the blank is placed, the boss structure can be formed at a position corresponding to the through hole, on the blank through the matching of the first upper die, the second upper die and the forming pin, so that the die forging for the blank in the vertical direction and the horizontal direction is realized, and a forging processfor the forged piece with the boss structure is simplified.

Description

technical field

[0001] The invention relates to the technical field of mechanical processing, in particular to a forging device and a forging method for multi-directional die forging of large complex forgings. Background technique

[0002] Take the complex large-scale forgings in nuclear power as an example. With the continuous improvement of nuclear reactor equipment safety and operating efficiency requirements, many nuclear power equipment parts need to be large-scaled and integrated. As the most complex and important part of the main equipment of the nuclear island One of the forgings. At present, the connecting section is often obtained by welding the nozzle and the cylinder together. Due to the large number of welds, the safety performance of the forging is greatly reduced and requires a longer inspection time, thereby reducing the cost of nuclear power equipment. operating efficiency.

[0003] In a certain existing technology, the blank is processed into a cylinder wi...

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