Forging method for shaft forgings and blank-making and finish-forging die structure of shaft forgings

Abstract

The invention discloses a forging method of a shaft forge piece and a blank making and finish forging die structure of the shaft forge piece. The forging method comprises the following steps that firstly, a proper steel ingot is selected according to the size of the shaft forge piece needing to be machined; secondly, the forging blank is heated; secondly, a shaft type blank manufacturing forging die is installed; thirdly, the first shaft type forge piece is placed between the upsetting-extruding die cores II; fourthly, a finish forging shaft forming forging die is installed; and 5, taking out the shaft forging finished product. The die structure comprises a first upper die fixing plate and a first lower die fixing plate, a first lower die plate frame is arranged on the top face of the first lower die fixing plate, and an upsetting-extruding die core groove I and an upsetting-extruding die core groove II are formed in the top face of the first lower die plate frame. Therefore, the same type of universal equipment can be used for blank manufacturing operation of shaft or disc forgings, so that the production cost load is reduced, shaft products with the middle diameter obviously larger than the diameters of the two ends are produced, and the product percent of pass is improved.

Description

technical field [0001] The invention relates to the technical field of forging technology, in particular to a forging method of a shaft forging and a blank-making and final forging die structure. Background technique [0002] Forging is a processing method that uses forging machinery to apply pressure to metal blanks to cause plastic deformation to obtain forgings with certain mechanical properties, certain shapes and sizes. It is one of the two major components of forging (forging and stamping). At present, the commonly used shaft forging scheme in the forging industry is generally to use a roll forging machine or cross wedge rolling to first make a billet from the heated forging blank, and then shape it on another press. Special billet making equipment, such as roll forging machine, cross wedge rolling and other equipment. [0003] And at present, the forging production line that can produce disk and shaft parts at the same time needs to arrange the blank making equipment...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that roll forging or cross-wedge rolling is used as the blank-making equipment for shaft forgings in the prior art, which not only causes production cost load, but also produces low diversity of shaft products problems, and proposed a forging method for shaft forgings and its billet and final forging die structure

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