Preparation and adjustment of aluminum mouse pad solution

Preparation and adjustment of solution in the etching process of aluminum mouse pad

(1)Preparation of oil removal solution: oil removal processing in the use of the method is the working temperature in 50℃ or so, so the working cylinder needs to have heat preservation device, working cylinder material to choose corrosion resistant stainless steel is appropriate.The volume of the solution is determined according to the volume of production, preferably greater than 5L per square decimeter.The preparation method is as follows.

①Clean the oil removal tank and add 2/3 water.

②Add EDTA - 2Na, trisodium phosphate, sodium hydroxide, sodium silicate and sodium borate in turn under the condition of constant stirring. In the process of putting chemicals, it is necessary to wait for the first one to dissolve completely before adding the chemicals behind.

③After the solution is complete, add water to the specified volume, stir evenly, and warm it to the temperature specified by the process. After passing the trial production, it can be used for production.The adjustment of oil removal is mainly through the analysis of adding consumed materials. After the oil removal solution is used for a period of time, there will be a large amount of precipitation in the working cylinder, which needs to be cleaned regularly.In the production process to prevent the workpiece falling into the solution, if found should be promptly removed.

(2)Preparation of pickling solution: pickling solution is to work at room temperature, working cylinder block material can choose hard PVC or PP board, the volume of solution depends on the production, more than 5L per square decimeter is appropriate.The preparation method is as follows.

①Clean the pickling tank and add 1/2 water.

②Add the calculated amount of nitric acid while stirring, and then add the calculated amount of chromium as needed.

③Add water to the specified volume and stir evenly. After the sample analysis is qualified, it can be used for production.The adjustment of pickling solution is mainly through chemical analysis, adding consumed chemical materials, in the production process to prevent the workpiece falling into the solution, if there is any discovery should be removed in time.

(3)Preparation of chemical passivating solution: chemical passivating solution works at room temperature. Hard PVC or PP plate can be used as material for the cylinder. The volume of solution depends on the production capacity.The preparation method is as follows.

①Clean the passivation cylinder and add 2/3 pure water.

②Add sodium dichromate and anhydrous sodium carbonate in turn under the condition of constant stirring.In the process of dispensing a chemical, it is necessary to wait for the first chemical to dissolve completely before adding the chemical behind.

③After the solution is completely dissolved, add pure water to the specified volume and stir evenly. The newly mixed solution can be used for production after it is qualified.

The chemical passivation solution was adjusted mainly by analyzing the consumption of sodium dichromate.In the production process to prevent the workpiece into the solution, if there are found should be promptly removed.

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