One-fire and one-time billeting die and method for alloy bar material and method for upsetting, extrusion and large deformation

Abstract

The invention relates to a one-fire and one-time blanking die, a method and a method for upsetting, extrusion, and large deformation of an alloy bar, belonging to the field of alloy modification. The first-fire blanking die includes a first die assembly and an extruding die; the cavity of the extruding die includes an upper cavity section, a middle cavity section and a lower cavity section that are connected in sequence, and the inner cavity shape of the upper cavity section is inverted. The conical boss, the inner cavity shape of the middle cavity section and the lower cavity section are cylindrical, the upper cavity section smoothly transitions to the middle cavity section, and there is a cross-sectional area difference at the connection between the middle cavity section and the lower cavity section; A die assembly includes an upper die plate and a punch, the upper die plate is used for connecting the press, and one end of the punch is connected with the upper die plate. The one-fire and one-time blanking method adopts the one-fire and one-time blanking mold to perform an upsetting process and a re-upsetting process. The method for upsetting and extruding large deformation includes using the one-fire and one-time billeting method to perform upsetting extrusion, upsetting deformation treatment, solid solution treatment and aging treatment.

Description

technical field [0001] The invention relates to the technical field of alloy modification, in particular to a primary-fired blanking die and method for an alloy bar, and a method for upsetting, extrusion, and large deformation. Background technique [0002] The stability of internal quality and casting defects during alloy ingot casting, smelting and pouring are difficult to control, which increases the complexity of deformation of different parts during ingot forging. In order to maximize the deformation of the ingot, make it fully and uniformly refine the casting structure, and then obtain high-performance alloy components, it is necessary to open the ingot for forging to provide a forging billet with uniform structure and properties for subsequent deep processing. Large plastic deformation technology can organically combine various strengthening mechanisms to fully exploit the potential of materials. The intermediate blank is prepared by the large plastic deformation tec...

AI Technical Summary

Problems solved by technology

[0003] At present, the large plastic deformation technologies mainly used at home and abroad include equal channel extrusion, multi-directional forging, cumulative stack rolling, etc. These methods can refine the alloy grains and break the second phase, but the alloys prepared by these methods have many processing passes. , high equipment requirements and energy consumption, poor deformation uniformity, and obvious anisotropy of mechanical properties

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