Combined extrusion method using transition cellpacking to realize helical slow-wave structure

A technology of slow wave structure and transition tube, which is applied in the direction of circuit components of transit time electronic tubes, discharge tube/lamp manufacturing, electrical components, etc. complex structure, etc.
CN1571096AInactive Publication Date: 2005-01-26INST OF ELECTRONICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
INST OF ELECTRONICS CHINESE ACAD OF SCI
Publication Date
2005-01-26
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention relates to a travelling wave tube manufacturing technique, especially a novel technique of manufacturing spiral slow-wave structure (SWS). It has the following steps: 1. fixing spiral line together with medium rod by mould; 2. axially sending them in a transition tube casing; 3. squeezing the transition tube casing together with them by the technical method of elastic or plastic deformation cold extrusion so as to obtain a transition module of the SWS; 4. firstly heating the tube casing to 800-1000 deg.C, axially sending the transition module at room temperature in the tube casing at high temperature, and locating; 5. cooling the whole workpiece obtained in the step 4 to room temperature, enclasping the transition module with the tube casing by the shrinkage of the tube casing, thus obtaining the SWS product. It is especially applied to composite tube casing with a more complex structure.
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Description

technical field

[0001] The invention relates to the manufacturing technology of the traveling wave tube, in particular to a novel process for manufacturing the helical slow wave structure. Background technique

[0002] The helical slow wave structure is the core component of the traveling wave tube. Because the helical slow-wave structure has broadband characteristics, the traveling wave tube can generate and amplify microwave or millimeter waves in a wide frequency band. Therefore, traveling wave tubes have important applications in electronic countermeasures, especially in electronic interference. However, the manufacture of the helical slow wave structure is a very complicated process, and its process methods are divided into cold extrusion and hot extrusion. Among them, cold extrusion is divided into two types: elastic deformation extrusion and plastic deformation extrusion, while hot extrusion can be divided into two types: overall heating extrusion and shell heating ...

Claims

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