Method for processing rectangular aluminum alloy waveguide by multi-pass rolling drawing

Abstract

The invention relates to a method for processing a pipe with a rectangular section through multi-pass rolling drawing. The method is a novel plastic forming process formed by combining the advantages of two conventional deformation processes, namely rolling and drawing. In the method, metal is rolled by a plurality of groups of rollers with hole patterns, and an aluminum alloy waveguide with highshape and size accuracy and internal quality is manufactured at low cost. A flexible roller group replaces the conventional die to form the rectangular aluminum alloy waveguide, and a flow function is introduced to smooth a three-dimensional cavity formed by the rollers, so that contact friction force in the process of deforming a blank is reduced, and stability in the process of deforming the blank is improved; and by the novel processing method, the metal has larger deformation than that drawn by a fixed die, drawing force is small, processes can be reduced, energy consumption is reduced, and metal which is difficult to deform is easy to process.

Description

technical field [0001] The present invention relates to a process for processing a rectangular aluminum alloy waveguide, in particular to a novel multi-pass rolling drawing method for processing a rectangular aluminum alloy waveguide. It belongs to the technical field of mechanical processing. [0002] Background technique [0003] Aluminum alloy waveguide with rectangular cross-section is a waveguide material boundary device located between signal transceiver units, and is an important device for collecting or reflecting waveguide beams in the fields of radar, telemetry, remote control and long-distance communication. Today's radar technology is developing towards a higher frequency band. The application of millimeter wave technology to develop high-sensitivity radar can realize ultra-low altitude detection and tracking targets, making it have a series of high resolution, strong anti-interference ability, small system size, and light weight. advantage. The rectangular w...

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Problems solved by technology

However, this near-solid lubricating film escapes quickly under high-pressure stress to form a local dry friction zone, and because of deformation and frictional heat generation during high-speed drawing, local high temperature is caused, which eventually leads to scratches on the surface of the drawn pipe. scars and partial burns

The third is to realize the smooth performance of multi-pass drawing from the aspects of forming method, deformation planning and mold. At the end of the 1990s, Sumitomo Metal Company of Japan adopted the drawing method of the core head with steps to develop the inner surface roughness Rmax<1μm semi-conductors use high-quality BAⅡ stainless steel tubes. This method replaces the bright annealing and electrolytic grinding methods, and the manufacturing cost is greatly reduced, but there are almost no technical data.

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