A process for cumulative extrusion and drawing of nano-metal materials and its machine tool

Abstract

The invention belongs to the field of server plastic deformation, and discloses a technique for processing nanometallic materials by utilizing accumulated extrusion and drawing and a machine tool. According to the processing technique, an accumulated extrusion and drawing mode is adopted, so that the relative sliding and broadening of materials are effectively avoided; the deformation characteristic is three-dimensional compressive stress, so that the deformation effect is improved, and additionally, the linear shape accuracy of a workpiece is increased; and the machine tool has the advantage of simple structure, full-process automation can be realized, and an extrusion die adopts an open die, so that the processing, manufacturing, installation and debugging are convenient. The technique has broad market application and popularization prospects in the field of manufacturing mass nanometallic materials or alloy materials.

Description

technical field [0001] The invention relates to a deep plastic processing method and a machine tool for processing bulk nano metal materials, belonging to the field of metal plastic processing. Background technique [0002] Deep plastic processing technology (SPD) has been developed since the mid-to-late 1990s. It can use traditional plastic processing methods to process bulk nano-metal materials or alloy materials. Although it has attracted the attention of many scholars, it is still in the experimental stage. At the stage of laboratory research, certain phased research results have been obtained. However, because the repeat stability of this processing technology is difficult to control and it is difficult to realize automation, it has not been effectively promoted at present. In the deep plastic processing technology, the most development potential and market application promotion prospect is the cumulative stack rolling technology (ARB), which uses rolling to achieve the...

AI Technical Summary

Problems solved by technology

[0002] Deep plastic processing technology (SPD) has been developed since the mid-to-late 1990s. It can use traditional plastic processing methods to process bulk nano-metal materials or alloy materials. Although it has attracted the attention of many scholars, it is still in the experimental stage. At the stage of laboratory research, some phased research results have been obtained. However, because the repeat stability of this processing technology is difficult to control and it is difficult to realize automation, therefore, it has not been effectively promoted at present.

In the deep plastic processing technology, the most development potential and market application promotion prospect is the cumulative stack rolling technology (ARB), which uses rolling to achieve the purpose of deep plastic deformation so that it can reach the nanometer level. During the manufacturing process, it is difficult to effectively control the tiny sliding and widening of the two materials, which makes it difficult to ensure the uniformity of the materials. The shape of the prepared workpiece is irregular, which can easily lead to poor process stability, especially in repeated rolling. The consistency of the process is difficult to effectively control

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