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Method for manufacturing elastic tube shell of slow-wave system of traveling wave tube

A technology of slow wave system and manufacturing method, which is applied in the manufacture of ships or leading wires, etc., can solve the problems of difficult processing, weakened elasticity, and small elasticity, and achieve the effects of good surface finish, excellent heat dissipation performance, and high cleanliness

Inactive Publication Date: 2011-01-12
HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The elasticity of the shell is related to the strength of the material. The high strength has good elasticity but is not easy to process, and the low strength is easy to process but has small elasticity. Generally, the shell after work hardening cannot be purified in a hydrogen furnace or a vacuum furnace. Purification treatment, the elasticity is weakened again, and the inner and outer surfaces of the shell without purification treatment are not completely removed by conventional chemical cleaning, which affects the cleanliness inside the traveling wave tube

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A method for manufacturing an elastic shell of a traveling wave tube slow wave system, comprising the following steps:

[0013] A. Clean the shell blank, and then anneal and soften it in a hydrogen furnace;

[0014] B. Perform mechanical spinning on the annealed shell blank, and then turn it;

[0015] C. Clean the tube and shell blanks processed by the car, and then put the tube and shell blanks into the hydrogen furnace for hardening treatment.

[0016] The shell material is elastic alloy 3J1; the annealing and softening treatment process in step A is: the heating rate of hydrogen furnace is 20 ℃ / min, the temperature is raised to 1000 ℃, and the temperature is kept for 15 minutes, and then cooled with the furnace; the hardening treatment process in step C is: hydrogen furnace heating The speed is 30°C / min, the temperature is raised to 775°C, kept for 4 hours, and then cooled with the furnace.

Embodiment 2

[0018] A method for manufacturing an elastic shell of a traveling wave tube slow wave system, comprising the following steps:

[0019] A. Clean the shell blank, and then anneal and soften it in a hydrogen furnace;

[0020] B. Perform mechanical spinning on the annealed shell blank, and then turn it;

[0021] C. Clean the tube and shell blanks processed by the car, and then put the tube and shell blanks into the vacuum furnace for hardening treatment. The shell material is made of elastic alloy 3J1; the annealing and softening process in step A is: the heating rate of the hydrogen furnace is 10°C / min, the temperature is raised to 960°C, the temperature is kept for 30min, and then cooled with the furnace; the hardening process in step C is: vacuum furnace heating The speed is 40°C / min, the temperature is raised to 725°C, kept for 6 hours, and then cooled with the furnace.

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PUM

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Abstract

The invention discloses a method for manufacturing an elastic tube shell of a slow-wave system of a traveling wave tube. The method comprises the followings steps of: softening treatment, mechanical spinning, machining and hardening treatment. The tube shell manufactured by the method has the advantages of good elasticity, high strength and easy processing, and the hardened tube shell can be purified in a hydrogen furnace or vacuum furnace.

Description

technical field [0001] The invention belongs to the field of manufacturing microwave electric vacuum devices, and in particular relates to a manufacturing method for a shell of a slow wave system of a traveling wave tube. Background technique [0002] The most common type of traveling wave tube is the helical traveling wave tube. The main component of the high frequency part is the slow wave structure. The shell outside the slow wave structure is required to be vacuum-tight, and the inner and outer diameters and concentricity of the shell are very different. High precision requirements, the general tolerance is within 0.01mm, and the shell is also slender, that is, small in diameter and long in length, and is generally processed by spinning. The clamping of the slow wave structure in the helical traveling wave tube mostly adopts the assembly method of spring compression, that is, the shell with certain elasticity is deformed by clamping spring pressure, and then the clamping...

Claims

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Application Information

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IPC IPC(8): H01J9/24C21D1/32C21D1/18C22F1/16
Inventor 吴华夏贺兆昌张文丙朱刚谢智能董晨薛正余
Owner HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE