Method for forging cake series forgeable piece with different directions

Abstract

The present invention relates to the technical field of metallurgical forging techniques, in particular to a method for changing the direction of a cake forging. Remove the edges and corners of the steel ingot, cut off the riser at the end of the steel ingot, 2) Axial upsetting: Upsetting the steel ingot in the axial direction to become a flat round forging, 3) Pull out the blank, cut off the jaw part, and make the flat round forging The forging is drawn into a rectangular parallelepiped with a square cross-section, 4) Upsetting the rectangular parallelepiped with a square cross-section into a cube, 5) Changing the forging direction, turning the cubic forging 90° for direction-changing forging, the upsetting ratio of one upsetting process in the upsetting process Reduced from 4-5 to 3-4, 6) chamfering and rounding the cube forging into a cylinder, 7) upsetting the cylinder forging into a cake shape. Reduce the first upsetting ratio of the upsetting process to avoid the tear zone. The direction-changing forging method for cake forgings of the invention can prevent transverse tearing of tube plate forgings, completely avoid such tearing phenomenon, ensure product quality, and produce qualified cake forging products.

Description

technical field [0001] The invention relates to the technical field of metallurgical forging techniques, in particular to a direction-changing forging method for cake forgings. Background technique [0002] Tube-sheet forgings are round cakes with small thickness and large diameter. At present, forging such forgings are formed by the following deformation methods: [0003] 1. Blanking: first transform the blank into a cylindrical material with a large height; [0004] 2. Upsetting and deforming into a round cake shape. [0005] The purpose of doing this is to make the internal structure of the billet dense and improve the usability. However, during the deformation process of the forging, the deformation in the height direction of the upsetting cake is relatively large. When the height of the upsetting cake is small, severe tearing occurs inside the cake and the forging is scrapped. In the later stage of the upsetting process, under the action of the deformation law, seve...

AI Technical Summary

Problems solved by technology

However, during the deformation process of the forging, the deformation in the height direction of the upsetting cake is relatively large. When the height of the upsetting cake is small, severe tearing occurs inside the cake and the forging is scrapped.