Deformation-free thermal extrusion method for helix slow-wave component preparation

Abstract

The invention discloses a deformation-free thermal extrusion method for helix slow-wave component preparation, which relates to the microwave device technology and is used for preparing a helix travelling wave tube component. The method comprises the following steps: placing and fixing a metal tube shell on an extrusion platform, feeding a helix and a medium clamping rod into an extrusion die, heating the tube shell firstly to increase the inside diameter of the tube shell, pushing the helix and the clamping rod of which positions are well fixed to the tube shell by using a push rod, then stopping heating, taking down the extrusion die, recovering the temperature of the whole component to the room temperature, and generating a great contraction force at the moment due to the contraction ofthe inside diameter of the tube shell to be applied to the helix and the clamping rod component to firmly extrude the both inside the tube shell so as to finish the preparation of the slow-wave component. Various dies required by the method can be prepared by machining of a linear cutting electro-discharge machine tool. The method not only can well improve the heat dissipation performance of theslow-wave component, but also can avoid the component structure deformation, dielectric performance reduction and high-frequency loss increment caused by the conventional assembly method.

Description

technical field [0001] The invention relates to the technical field of microwave devices, in particular to a non-deformation hot extrusion method for preparing helical slow wave components, and is a method for preparing helical traveling wave tube slow wave components with strong heat dissipation capability. Background technique [0002] Broadband and high-power traveling wave tubes are microwave devices that play a key role in the fields of electronic countermeasures, fire control systems and communications. Its performance plays a decisive role in these military and civilian systems, and the slow wave system determines the performance of traveling wave tubes. As a key component, slow-wave structures seeking broadband, high efficiency, and better thermal conductivity are critical to meeting current national defense needs and future military electronic equipment. Among the various characteristics of the helical traveling wave tube, the thermal characteristic is a very import...

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Problems solved by technology

[0011] The purpose of the present invention is to provide a non-deformation hot extrusion method for the preparation of helical slow-wave components, which can reduce the contact thermal resistance to the greatest extent, so as to solve the heat dissipation problem of the helical TWT slow-wave components, thereby improving the working efficiency of the TWT. time stability

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