A cathode filament electrophoresis method for an x-band space traveling wave tube
A cathode filament and traveling wave tube technology, which is used in electrophoretic plating, thermionic cathode manufacturing, electrolytic coatings, etc., can solve the problems of uneven filament plating, poor adhesion of electrophoretic layers, dark spots, etc. Layers and short circuits, good surface quality, improved thermal efficiency
Active Publication Date: 2016-04-27
HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] During electrophoresis, since the filament itself is spring-shaped and the conductive surface is discontinuous, the potential distribution between the cathode and the anode in the electrophoretic liquid is uneven. According to the conventional electrophoresis method, the upper and lower surfaces of the filament and the inner and outer surfaces of the filament are unevenly coated. , the poor adhesion of the electrophoretic layer will also cause peeling, impurities, peeling, cracks, dark spots, burrs and other phenomena, which will affect the quality of the electrophoretic surface
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0032] The method of the present invention is to first carry out high-voltage electrophoresis treatment on the filament, and the high-voltage electrophoresis impacts the filament material, so that the surface is impacted by activated alumina, the surface is activated, and the deposition of alumina is facilitated at the same time; then the voltage is gradually reduced to the electrophoresis. Normal voltage, after a certain time, the insulation reaches the required size.
[0033] The specific implementation steps are as follows:
[0034] 1. Prepare electrophoresis solvent solution: Measure (1100±10) mL of isoamyl acetate, pour it into a ball mill jar, weigh (60±1) g nitrocellulose, put it into the ball mill jar, and ball mill Put the tank on a ball mill for not less than 15 hours to dissolve the nitrocellulose into the isoamyl acetate.
[0035] 2. Prepara...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thermal efficiency | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides a method for performing electrophoresis on an X-band space traveling-wave tube cathode filament. According to the method, the filament is placed in an electrophoresis solution for high-voltage electrophoresis, filament material is impacted by high-voltage electrophoresis, so that the surface of the filament is impacted by activated aluminum oxide and activated, and meanwhile sediment of the aluminum oxide is facilitated; then voltage is gradually reduced to normal voltage of electrophoresis, and an insulating layer reaches a needed size after a certain time. The filament has the advantages of being good in electrophoresis surface quality, electrophoresis evenness and internal and external surface uniformity and high in adhesive force of the insulating layer. The method can be used for the filament, used for providing heat, of an X-band space traveling-wave tube cathode, after electrophoresis, the phenomena of layering of wires and short circuit of the filament are avoided, and the heat efficiency of the filament can be improved.
Description
technical field [0001] The invention belongs to the field of microwave electric vacuum, in particular to the field of filament manufacturing of X-band space traveling wave tube cathode. Background technique [0002] The X-band space traveling wave tube is the most widely used key device in the space payload system equipment at home and abroad, and plays a pivotal role in the development of space navigation, communication and data transmission systems. The cathode of the X-band space traveling wave tube is the key component of the whole X-band space traveling wave tube, which is required to have the characteristics of long life, stable and reliable operation, and resistance to vibration and shock. [0003] For the cathode of the X-band space traveling wave tube, in order to ensure that the cathode is resistant to vibration and shock and improve the working stability, a strong guarantee must first be obtained from the selection of the cathode filament. As the heat source provi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H01J9/04C25D13/16C25D13/02
Inventor 吴华夏孟昭红陈爱民于晨晨卞磊邹莺歌王莹
Owner HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE