Forging technology for synchronous waste-removing and weight-reduction of forge piece

Abstract

The invention discloses a forging technology for synchronous waste-removing and weight-reduction of a forge piece, and belongs to the technical field of forge piece processing. A weight-reduction partand an installation hole part of the forge piece can be achieved in the forging process; by installing a fractional punching mechanism in an existing precision forging die, the forge piece can be directly formed at a time in the forging process based on a thermal stress principle and a plastic deformation rule of the forge piece, and local deformation of the forge piece is prevented. Wastes are removed at a time, the machining difficulty and cumbersome operation brought by a machining process after forging are avoided, and the cost is further reduced; moreover, punching burrs on a non-machining surface can be avoided, and the whole machining workload is reduced; assisted by precise temperature control in the whole process, the shape of the flange hub forge piece can be obtained, dimensional deviations are not likely to be produced, structures in metal can be improved, the mechanical performance and the physical performance of the metal are improved, and therefore, the flange hub forgepiece higher in use performance and longer in life.

Description

technical field [0001] The invention relates to the technical field of forging processing, in particular to a forging process for removing waste and reducing weight of synchronous forgings. 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). Forging can eliminate defects such as as-cast porosity produced in the metal smelting process and optimize the microstructure. At the same time, due to the preservation of complete metal flow lines, the mechanical properties of forgings are generally better than castings of the same material. For important parts with high loads and severe working conditions in related machinery, forgings are mostly used, except for plates, profiles or weldments that can be rolled with simpler shapes. [...

AI Technical Summary

Problems solved by technology

[0003] The wheel hub unit flange is a key part of the automobile hub unit. When the car is running, it bears variable impact loads. Therefore, it needs higher mechanical strength to support high-load operation during forging. However, such high-quality flanges are currently The flange hubs are all imported from abroad, with high cost and high price. However, domestic forging generally adopts the traditional overall free forging process combined with mechanical processing technology for production. The forging has a large processing allowance and low material utilization, resulting in mechanical processing work The increase in quantity, the increase in equipment workload, and the great waste of materials, on the one hand, increase the process cost of post-forging heat treatment; on the other hand, reduce the mechanical properties of forgings, and the process pressure of performance heat treatment increases. , the manufacturing process is complicated, the forming is difficult, and the waste is difficult to remove at one time. It needs to be removed through the machining process after forging, which will further increase the cost invisibly. At the same time, the forging is more easily deformed, which affects the quality of the finished product

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