Electrolytic solution used for molybdenum gate screen electrolytic polishing and preparation method and application thereof

An electrolytic polishing and electrolyte technology, applied in the field of electrolyte, can solve problems such as damage to electronic tubes, achieve the effects of reducing the chance of ignition, improving quality, and scientific and reasonable proportioning

Inactive Publication Date: 2010-10-20
NANJING SANLE ELECTRONICS INFORMATION IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] EDM technology is widely used in the manufacture of electric vacuum devices. The traveling wave tube grid in the microwave tube is formed by EDM from molybdenum sheet. The thickness of the molybdenum grid is only 0.05-0.1mm, and the wire diameter is only 0.06~0.09mm, due to the influence of high temperature in the EDM process, a layer of black metal melt will adhere to the surface of the mesh, and ther

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1

[0030] 1. An electrolyte for electropolishing molybdenum grid, which is composed of the following raw materials:

[0031] 400 ml of phosphoric acid, 150 ml of sulfuric acid, 40 g of nickel sulfate, and 150 ml of water.

[0032] 2. A method for preparing the electrolyte for electropolishing of molybdenum grid described in 1, comprising the following steps:

[0033] Take 150ml of water and pour it into the container, then add 400ml of phosphoric acid, stir well, then slowly add 150ml of sulfuric acid, keep stirring the solution during the process of adding sulfuric acid, and finally add 40g of nickel sulfate, heat to dissolve, and mix well.

[0034] 3. A method for electropolishing molybdenum grid with the electrolyte described in 1, comprising the following steps:

[0035] (1) Take the molybdenum grid and put it into a sodium hydroxide solution with a concentration of 20% and boil for 30 minutes to remove the grease and oxides on the surface of the molybden...

Example Embodiment

[0041] Example 2

[0042] 1. An electrolyte for electropolishing molybdenum grid, which is composed of the following raw materials:

[0043] 450 ml of phosphoric acid, 200 ml of sulfuric acid, 60 g of nickel sulfate, and 200 ml of water.

[0044] 2. A method for preparing the electrolyte for electropolishing of molybdenum grid described in 1, comprising the following steps:

[0045] Take 200ml of water and pour it into the container, then add 450ml of phosphoric acid, stir well, then slowly add 200ml of sulfuric acid, keep stirring the solution during the process of adding sulfuric acid, and finally add 60g of nickel sulfate, heat to dissolve, and mix well.

[0046] 3. A method for electropolishing molybdenum grid with the electrolyte described in 1, comprising the following steps:

[0047] (1) Take the molybdenum grid and put it into a sodium hydroxide solution with a concentration of 30% and boil for 40 minutes to remove the grease and oxides on the surface of the molybdenum...

Example Embodiment

[0053] Example 3

[0054] 1. An electrolyte for electropolishing molybdenum grid, which is composed of the following raw materials:

[0055] 400 ml of phosphoric acid, 180 ml of sulfuric acid, 50 g of nickel sulfate, and 160 ml of water.

[0056] 2. A method for preparing the electrolyte for electropolishing of molybdenum grid described in 1, comprising the following steps:

[0057] Take 160ml of water and pour it into the container, then add 400ml of phosphoric acid, stir well, then slowly add 180ml of sulfuric acid, keep stirring the solution during the process of adding sulfuric acid, and finally add 50g of nickel sulfate, heat to dissolve, and mix well.

[0058] 3. A method for electropolishing molybdenum grid with the electrolyte described in 1, comprising the following steps:

[0059] (1) Take the molybdenum grid and put it into a sodium hydroxide solution with a concentration of 20% and boil for 35 minutes to remove the grease and oxides on the surface of the molybden...

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Abstract

The invention discloses an electrolytic solution used for molybdenum gate screen electrolytic polishing and a preparation method thereof, and application thereof to the molybdenum gate screen electrolytic polishing process. The electrolytic solution consists of the following raw materials: 400 to 450 ml of phosphoric acid, 150 to 200 ml of sulfuric acid, 40 to 60 g of nickel sulfate and 150 to 200 ml of water. Experiment researches show that each ingredient of the electrolytic solution has scientific and reasonable proportion, and can be perfectly used for the electrolytic polishing process of molybdenum gate screens and the like. The molybdenum gate screen electrolytic polishing method of the invention has the advantages of strong operability and good electrolytic polishing effect, and can perfectly remove the burr on the surface of the molybdenum gate screens particularly under the preferable process parameter conditions such as the electrolytic voltage, the time, the temperature and the like, so the quality of the molybdenum gate screens can be improved, the striking rate is obviously reduced after the molybdenum gate screens are assembled to traveling wave tubes, and the performance of the traveling wave tubes is improved.

Description

technical field [0001] The invention designs an electrolytic solution, and in particular relates to an electrolytic solution for molybdenum grid electrolytic polishing, a preparation method thereof, and an application of the electrolytic solution in a molybdenum grid electrolytic polishing process. Background technique [0002] EDM technology is widely used in the manufacture of electric vacuum devices. The traveling wave tube grid in the microwave tube is formed by EDM from molybdenum sheet. The thickness of the molybdenum grid is only 0.05-0.1mm, and the wire diameter is only 0.06~0.09mm, due to the influence of high temperature in the EDM process, a layer of black metal melt will adhere to the surface of the mesh, and there are still burrs on the surface of the mesh. At present, there is no effective way to remove the residue on the surface of the molybdenum grid. Burrs, if molybdenum grids with burrs are installed in electronic tubes such as traveling wave tubes, sparks ...

Claims

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Application Information

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IPC IPC(8): C25F3/26
Inventor 刘洋陈彩云陈毅飞
Owner NANJING SANLE ELECTRONICS INFORMATION IND GRP
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