Method for forging large cakes by upsetting and throwing combined with flat anvil rotary forging edge

Abstract

The invention relates to a method for forging large cake pieces by means of combining upsetting and polishing with flat anvil spin edge forging. The method includes the steps: firstly, performing first cake upsetting and round polishing on a blank via an upper flat anvil, an upsetting plate and a lower rotating plate, to be more specific, performing upsetting on the blank via the upper flat anvil, the upsetting plate and the lower rotating plate, when the diameter of the blank is close to the maximum width of the upsetting plate, removing the upsetting plate and performing spin pressing on the center of the blank through the upper flat anvil to enable the thickness of the blank to reach certain specifications, subjecting the blank to outer round polishing via polishing pliers, the upper flat anvil and the rotating plate, and then putting the blank back to a heating furnace; secondly, performing second flat anvil edge forging, center flattening and round polishing, to be more specific, performing layered spin pressing and edge forging on the blank via the polishing pliers, the upper anvil and a lower anvil, performing centered layered spin pressing on the blank via the upper flat anvil and the rotating plate, and performing outer round polishing on the blank via the polishing pliers, the upper flat anvil and the rotating plate. By the method, the problems that forging difficulty is high and concave center defects at the centers of the cake pieces are caused easily due to the fact that forging is performed by a center forging method are solved effectively.

Description

technical field [0001] The invention relates to a forging production method of a forging press, in particular to a forging production method of a large-diameter cake by a forging press. Background technique [0002] Metal forging products can involve shapes such as round materials, square materials, flat materials, shafts, cakes, and rings. Cake products are common metal forging products. When forming and forging cakes: the lower working anvil of the forging press is a circular flat anvil, that is, the upper surface of the lower working anvil is a circular plane, and the upper working anvil is a rectangular flat anvil, that is, the upper working anvil The lower surface of the forging is a rectangular plane, and both sides of the forging are forged and deformed. [0003] At present, there are three thermal processing deformation methods for cake forming and forging: one is eccentric forging, that is, moving the circular flat anvil, so that the rectangular flat anvil is gradu...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to develop a method for forging large-scale cakes by upsetting and throwing combined with flat anvil rotary forging to solve the problem of forging cross-section of forgings as the thermal processing temperature gradually decreases in the process of forging large cakes with the center forging method. The resistance gradually increases, which makes forging more difficult and easily causes the problem of concave center defects in the center of the cake.

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