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Deposit fluid recycling utilization method

A deposition solution and nickel plating technology, applied in liquid chemical plating, metal material coating process, coating and other directions, can solve the problems of waste, environmental pollution, turbid solution, etc., and achieve good appearance, stable technology, and better appearance. Effect

Active Publication Date: 2011-08-10
BAOTA IND CO LTD
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] After the existing nickel-plating deposition solution is used several times, the solution becomes turbid and cannot be used any longer, so it has to be discarded, resulting in waste or environmental pollution. Even if the corresponding components are added after filtration, it can only be used several times, and finally must be discharged

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The concrete operation process of the present invention in being applied to the nickel plating of bearing and other parts:

[0027] (1) After the used nickel plating deposition solution is cooled to normal temperature, it is filtered into the accessory tank, and chemical analysis is carried out to analyze the remaining amount of the two main salts of nickel sulfate and sodium hypophosphite, and then according to the nickel sulfate and hypophosphite The remaining amount of sodium calculates the supplementary amount of other components, and the calculation method is as follows (calculated according to 1 liter of nickel plating deposition solution, the unit is gram)

[0028] Supplementary amount of nickel sulfate: 25- remaining amount of nickel sulfate

[0029] Supplementary amount of sodium hypophosphite: 20-residual amount of sodium hypophosphite

[0030] Supplementary amount of hydroxypropionic acid: the same as that of nickel sulfate

[0031] Addition amount of sodiu...

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Abstract

The present invention relates to a nickel plating deposit fluid recycling utilization method. The method comprises the following technical processes of: cooling used nickel plating deposit fluid to normal temperature; filtering the deposit fluid; analyzing the residual amounts of nickel vitriol and sodium phosphate thereof; calculating addition amount of other components according to the residual amounts of the nickel vitriol and the sodium phosphate; adding nickel vitriol, subpressure sodium phosphate, hydracrylic acid, sodium bicarbonate and boric acid according to the addition amount; and then continuing to use the mixed fluid. The method has stable technology; components such as bearings and the like which are repaired by the nickel plating deposit fluid have standard sizes, better appearance and strong antiseptic capability; turbidity hardly happens to the deposit fluid, and the deposit fluid is not discharged; and the material cost is greatly reduced.

Description

Technical field: [0001] The invention relates to an electroless nickel plating technology, in particular to a method for recycling a nickel plating deposition solution used in the electroless nickel plating. Background technique: [0002] Existing electroless nickel plating can be used to repair the out-of-tolerance dimensions of bearings or other parts. The solution used is also called nickel plating deposition solution. Its composition and proportion are as follows: [0003] 1. Nickel sulfate N i SO4.7H 2 O 0.089M concentration 280.7g / l [0004] 2. Hydroxypropionic acid 0.275M concentration 90.8g / l [0005] 3. Sodium bicarbonate 0.179M concentration 84.01g / l [0006] 4. Sodium hypophosphite N a h 2 PO 3 .H 2 O 0.189M concentration 105.99g / l [0007] 5. Boric acid H 3 BO 3 0.162M Concentration 61.83g / l [0008] 6. The 25% sodium hydroxide solution is used to adjust the pH value of the nickel plating solution. [0009] After the existing nickel-p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/36
Inventor 胡秀丽纪毅郝彭何强闫海翔张培强
Owner BAOTA IND CO LTD