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Method for removing oxide at bottom of miniature electric device shell

A technology for the bottom of the shell and oxides, which is applied to surface polishing machine tools, machine tools suitable for grinding the edge of workpieces, grinding machines, etc., can solve the problem that chemical solutions cannot be exchanged with water in time, it is labor-consuming and time-consuming, cannot be oxidized, and cannot be oxidized Elimination of impurities and other issues to achieve the effects of avoiding the generation of oxides and other impurities, high removal efficiency, and short polishing time

Inactive Publication Date: 2015-05-06
贵州振华群英电器有限公司(国营第八九一厂)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the chemical polishing process is to remove the lubricant attached to the surface of the shell during processing and the oil stains on the appearance. However, due to the particularity of the shell (the shape of a plastic bucket), the chemical polishing time is only about 1.5 minutes. The chemical solution in the shell cannot be exchanged with water in time, and mottled oxides are formed on the bottom. At present, the usual cleaning method is ultrasonic cleaning, but this method cannot completely eliminate the oxides.
As relays are applied to the aerospace field, any factors that affect product quality must be eliminated. Therefore, manual removal of mottled oxides under a magnifying glass of 45 times is not only time-consuming, but also cannot completely remove the oxides.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1. A method for removing oxides at the bottom of a micro-electrical appliance casing: comprising the steps of:

[0016] 1. Add 10g of sodium hydroxide and 55g of sodium carbonate to 100ml of deionized water at 40°C, stir to dissolve completely, then add 7g of surfactant and 13ml of emulsifier, stir evenly, then add deionized water to 1L, keep warm 5min, cool down, make a polishing agent, and set aside;

[0017] 2. Put the micro electrical shell and abrasive into the finishing machine, add 40°C deionized water and polishing agent into the finishing machine at a volume ratio of 10:1;

[0018] 3. Start the finishing machine, adjust the frequency of the finishing machine to 13HZ, and adjust the time to 17min for polishing;

[0019] 4. Separation of micro electrical shell and abrasive;

[0020] 5. Dehydrate the shell with alcohol, dry it, and pack it into a bag.

[0021] In this embodiment, the surfactant is sodium alkyl carboxylate, the emulsifier is alkylphenol...

Embodiment 2

[0022] Example 2. A method for removing oxides at the bottom of a micro-electrical appliance casing: comprising the steps of:

[0023] 1. Add 12g of sodium hydroxide and 60g of sodium carbonate to 200ml of deionized water at 60°C, stir to dissolve completely, then add 8g of surfactant and 15ml of emulsifier, stir evenly, then add deionized water to 1L, keep warm 5min, cool down, make a polishing agent, and set aside;

[0024] 2. Put the micro electrical shell and abrasive into the finishing machine, add 60°C deionized water and polishing agent into the finishing machine at a volume ratio of 15:1;

[0025] 3. Start the finishing machine, adjust the frequency of the finishing machine to 15HZ, and adjust the time to 20min for polishing;

[0026] 4. Separation of micro electrical shell and abrasive;

[0027] 5. Dehydrate the shell with alcohol, dry it, and pack it into a bag.

[0028] In this embodiment, the surfactant is sodium alkylbenzene sulfonate, the emulsifier is octylp...

Embodiment 3

[0029] Example 3. A method for removing oxides at the bottom of a micro-electrical appliance casing: comprising the steps of:

[0030] 1. Add 8g sodium hydroxide and 50g sodium carbonate to 300ml deionized water at 20℃, stir to dissolve completely, then add 6g surfactant and 10ml emulsifier, stir evenly, then add deionized water to 1L, keep warm 5min, cool down, make a polishing agent, and set aside;

[0031] 2. Put the micro electrical shell and abrasive into the finishing machine, add 20°C deionized water and polishing agent into the finishing machine at a volume ratio of 13:1;

[0032] 3. Start the finishing machine, adjust the frequency of the finishing machine to 10HZ, and adjust the time to 15min for polishing;

[0033] 4. Separation of micro electrical shell and abrasive;

[0034] 5. Dehydrate the shell with alcohol, dry it, and pack it into a bag.

[0035] In this embodiment, the surfactant is sodium alkylsulfonate, the emulsifier is benzylphenol polyoxyethylene et...

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PUM

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Abstract

The invention discloses a method for removing oxide at the bottom of a miniature electric device shell. The temperature of deionized water is raised to 20-60 DEG C, sodium hydroxide and sodium carbonate are added in and are stirred to be totally dissolved, then, surfactant and emulgator are added in, a mixture is evenly stirred, heat preservation is performed for 5 min, cooling is performed, and polishing agents are made for standby use; the polishing agents comprise 8-12 g / L sodium hydroxide, 50-60 g / L sodium carbonate, 6-8 g / L surfactant and 10-15 ml / L emulgator; the deionized water with the temperature being 20-60 DEG C and the polishing agents are added in a polisher machine according to the volume ratio of 10-15:1; after the polisher machine is started for polishing, the miniature electric device shell and abrasive materials are separated, and the shell is dewatered through ethyl alcohol, aired and packaged in a bag. Through the method, the oxide at the bottom of the miniature electric device shell can be thoroughly removed, efficiency is high, cost of the polishing agents is low, and time and labor are saved.

Description

technical field [0001] The invention relates to a method for removing oxides, in particular to a method for removing oxides at the bottom of a housing of a micro electric appliance. Background technique [0002] The housing is the key component of the relay. The processing flow of the shell includes: blanking extension→annealing→extension forming→edge trimming→chemical polishing→storage. The purpose of the chemical polishing process is to remove the lubricant attached to the surface of the shell during processing and the oil stains on the appearance. However, due to the particularity of the shell (the shape of a plastic bucket), the chemical polishing time is only about 1.5 minutes. The chemical solution in the shell cannot be exchanged with water in time, and mottled oxides are formed at the bottom. At present, the usual cleaning method is ultrasonic cleaning, but this method cannot completely eliminate the oxides. As relays are applied to the aerospace field, any factors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B31/00C09G1/04
CPCB24B31/00C09G1/04
Inventor 尹毅沈国文莫春环张红林
Owner 贵州振华群英电器有限公司(国营第八九一厂)
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