CN1267579C - Method for restoring dimension discrepancy of bearing utilizing chemical plating nickel - Google Patents
Method for restoring dimension discrepancy of bearing utilizing chemical plating nickel Download PDFInfo
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- CN1267579C CN1267579C CN 03152734 CN03152734A CN1267579C CN 1267579 C CN1267579 C CN 1267579C CN 03152734 CN03152734 CN 03152734 CN 03152734 A CN03152734 A CN 03152734A CN 1267579 C CN1267579 C CN 1267579C
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Abstract
The present invention relates to application of chemical nickel plating in the field of material surface treatment, particularly to a method for repairing the dimension discrepancy of a bearing by utilizing chemical nickel plating. The method comprises the following steps: cleaning a bearing by means of gasoline, cleaning the bearing with methanol, cleaning the bearing in hot water with the temperature of 60 to 70 DEG C for 2 minutes, cleaning the bearing by means of a chemical agent with the temperature of 60 to 70 DEG C, cleaning the bearing in cold water, immersing and activating the bearing in acid with the concentration of 10: 5 for 1 to 2 minutes, cleaning the bearing in cold water, preheating the bearing in hot water with the temperature of 80 to 90 DEG C for 5 to 10 minutes, preparing chemical nickel plating repairing solution. The method has the advantages of low cost of chemical raw material, stable solution and long service life, and the method is suitable for large-scale production.
Description
Technical field
The present invention relates to the application of the chemical nickel plating method in the material surface process field, especially relate to a kind of method of repairing the bearing dimension discrepancy with chemical nickel plating.
Background technology
Chemical plating nickel technology at home and abroad is widely used at present, its main advantage is not need under the effect situation of impressed current, utilize the principle of chemical reduction, make nickel ion be reduced into nickel deposition on the metallic surface, form a kind of nickel-phosphorus alloy coating, characteristics such as that the coating of formation has is even, smooth, acidproof, alkaline-resisting, hardness height.Based on above characteristics, we are chemical plating nickel technology, are applied to repair on the bearing dimension discrepancy, just use the chemical nickel plating material, employing be the analytical pure chemical reagent entirely, the cost height, it is little to change the plating scope, inapplicable scale production.Particularly at technical elements, the plating bath instability solution often occurs and decomposes, muddy phenomenon, and work-ing life is short, and solution generally can only use four cycles, and is not only uneconomical but also waste chemical raw material, and environment has also been caused certain pollution.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of and can reuse, the chemical raw material cost is low, solution-stabilized, the cycle in work-ing life is long, is fit to a kind of method of repairing the bearing dimension discrepancy with chemical nickel plating of scale operation.
In order to realize goal of the invention, the present invention realizes in the following way:
A kind of method of repairing the bearing dimension discrepancy with chemical nickel plating, it is characterized in that: this method comprises the steps:
(1) bearing cleaning;
(2) with hot water preheating bearing, during preheating, the temperature of hot water is 80-90 ℃, and the time of preheating is 5-10 minute;
(3) contain following component in the preparation chemical nickel plating repair liquid, every liter of described chemical nickel plating repair liquid:
Industrial sulphuric acid nickel 25 gram commercial hypophosphorous acid sodium 20 grams
Industry hydroxy-propionic acid 25 gram industrial sodium bicarbonates 15 grams
Industrial boric acid 10 gram additives 1 gram
Wherein additive adopts oxyacetic acid, acetic acid or oxalic acid, and the pH value of plating bath is 4.5-5.1, and temperature is 85-90 ℃.
(4) go into the liquid plating, plating speed is 20-24 μ m/h;
(5) eliminate muddy phenomenon;
(6) quality inspection;
(7) DIFFUSION TREATMENT of heating, temperature is 150-160 ℃, the time of insulation is 2-3 hour;
(8) be coated with slushing oil;
(9) preparation of chemical nickel plating repair liquid regenerated liquid.
The compound method of described chemical nickel plating repair liquid comprises the steps:
(1) earlier industrial sulphuric acid nickel, sodium hypophosphite, additive are dissolved into respectively in the distilled water, stirring reaches sufficient dissolving;
(2) will add distilled water in the quantitative hydroxy-propionic acid, and in the sodium bicarbonate of the required adding aqueous solution that joins hydroxy-propionic acid slowly, the limit edged stirs;
(3) boric acid that will be dissolved in the distilled water is put into heat treated in 90 ℃ of hot water, and it is dissolved fully;
(4) after various chemical ingredientss are fully dissolved, be filled in the channels of ligand of setting, pour into successively in order nickel sulfate solution, in hydroxy-propionic acid solution, the boric acid solution of becoming reconciled, sodium hypophosphite solution, additive, a kind of solution of every filtration must accomplish that the limit bevelling stirs, and fills up the distilled water of setting part simultaneously;
(5) be the pH value of the test paper survey deposit fluid of 3.8-5.4 with pH value, within the scope of 4.5-5.1, then the repair liquid preparation is finished as if pH value, if be lower than this scope, then will transfer pH value with sodium hydroxide or ammonia soln;
(6) used distilled water all counts the cumulative volume of repair liquid in the process for preparation.
The compound method of described chemical nickel plating repair liquid regenerated liquid comprises the steps:
(1) used nickel plating solution is filled in the channels of ligand, carries out chemical analysis, calculate the residual content of single nickel salt and two kinds of main salt of sodium hypophosphite, calculate the additional amount of other composition again according to the residual content of single nickel salt, method of calculation are as follows: calculate by 1 liter of plating bath, unit is gram
The additional amount of single nickel salt: 25-single nickel salt residual content
The additional amount of sodium hypophosphite: 20-sodium hypophosphite residual content
The additional amount of hydroxy-propionic acid: the additional amount of 1/2 single nickel salt
The additional amount of sodium bicarbonate: the additional amount of 3/10 single nickel salt
The additional amount of boric acid: the additional amount of 1/5 single nickel salt;
(2) according to the compound method of new soln, each composition with additional amount is dissolved in the distilled water earlier, reaches dissolving fully;
(3) dissolved boric is put into heat treated in the hot water, reaches sufficient dissolving;
(4) will be dissolved into hydroxy-propionic acid in the distilled water, neutralize with the sodium bicarbonate additional amount;
(5) with nickel sulfate solution, hydroxy-propionic acid solution, the boric acid solution of additional amount, pour in order in the channels of ligand, again the sodium hypophosphite of additional amount is poured in the channels of ligand, fully stir;
(6) adjust pH value,, pH value is adjusted in the pH value scope of former setting, add the distilled water of Football Association's part with sodium hydroxide or ammonia soln.
The described method of eliminating muddiness is: under the situation of not stopping using plating bath, add the lactic acid complexing agent.
Method provided by the invention, prescription is flexible, and the sufficient cost of material is low, than using reagent material to reduce cost 2-3 doubly.The lining scope is wide, not only can repair the bearing dimension discrepancy, can also repair mechanical component, instrument, daily life ornament etc.
Solution regeneration technology provided by the invention, consistent, life cycle is long, by four cycles of existing use, brings up to 18-20 cycle, has prolonged the work-ing life of solution greatly.
At present since plating bath in the process of using, heating is uneven, temperature is too high, loading capacity is improper, when phosphorous acid nickel precipitation down will, cause solution to become turbid, from the also not good solution effectively of theoretical side, the discard solution of can only stopping using, and the first-aid method of the solution muddiness that the present invention adopts, under the situation of not stopping using plating bath, add the lactic acid complexing agent after 20 minutes solution recover normal, its principle is: after adding the lactic acid complexing agent, nickel ion and complexing agent ion are formed complicated complex ion, cause the PH of solution to descend, and the content of orthophosphite drops to the set point with the corresponding phosphorous acid nickel of pH value, it is normal that solution recovers, and the material of excess precipitates voluntarily and drops on the electro-insulating rubber leather that container bottom is placed with.Adopt this method, do not need optional equipment, promptly need not stop production and can guarantee plating quality, than having bigger superiority, and environment protection is also had great importance with carbonization method or mechanical means treatment process.
Use the method that this law invention provides, be tested to now from 1998, consistent, product percent of pass reaches more than 95%, prediction, and annual value of production can reach more than 1,000,000 yuan, saves more than 2,000 ton of bearing steel.
Embodiment
A kind of method of repairing the bearing dimension discrepancy with chemical nickel plating, this method comprises the steps:
A. gasoline bearing cleaning;
B. use the washed with methanol bearing;
C. use the hot water bearing cleaning, during cleaning, the temperature of hot water is 60-70 ℃, and scavenging period is 2 minutes;
D. chemical agent bearing cleaning, during cleaning, the temperature of chemical agent is 60-70 ℃, and this chemical agent is the mixture of sodium hydroxide, yellow soda ash and sodium phosphate, and sodium hydroxide is 40 grams per liters in this mixture, and yellow soda ash is 25 grams per liters, sodium phosphate 60 grams per liters;
E. clean with cold water;
F. pickling activation, soak time is 1-2 minute, the concentration of acid is 10: 5; This acid is hydrochloric acid;
G. clean with cold water;
H. use hot water preheating bearing, during preheating, the temperature of hot water is 80-90 ℃, and the time of preheating is 5-10 minute;
I. prepare the chemical nickel plating repair liquid; Contain following component in every liter of the described chemical nickel plating repair liquid: industrial sulphuric acid nickel 25 grams, commercial hypophosphorous acid sodium 20 grams, industrial hydroxy-propionic acid 25 grams, industrial sodium bicarbonate 15 grams, industrial boric acid 10 grams, additive 1 gram, described additive adopts oxyacetic acid, acetic acid, oxalic acid etc.; The pH value of every liter of plating bath is 4.5-5.1, and temperature is 85-90 ℃.The compound method of described chemical nickel plating repair liquid comprises the steps:
(1) earlier industrial sulphuric acid nickel, sodium hypophosphite, additive are dissolved into respectively in an amount of distilled water, stirring reaches sufficient dissolving;
(2) an amount of distilled water will be added in the quantitative hydroxy-propionic acid, and in the sodium bicarbonate of the required adding aqueous solution that joins hydroxy-propionic acid slowly, the limit edged stirs;
(3) boric acid that will be dissolved in an amount of distilled water is put into, and heat treated in 90 ℃ of hot water is dissolved it fully;
(4) after various chemical ingredientss are fully dissolved, be filled in the channels of ligand of setting, pour into successively in order nickel sulfate solution, in hydroxy-propionic acid solution, the boric acid solution of becoming reconciled, sodium hypophosphite solution, additive, a kind of solution of every filtration must accomplish that the limit bevelling stirs, and fills up the distilled water of setting part simultaneously;
(5) be the pH value of the test paper survey deposit fluid of 3.8-5.4 with pH value, within the scope of 4.5-5.1, then the deposit fluid preparation is finished as if pH value, if be lower than this scope, then will transfer pH value with sodium hydroxide or ammonia soln;
(6) used distilled water should all count the cumulative volume of deposit fluid in the process for preparation.
J. go into the liquid plating, plating speed is 20-24 μ m/h;
K. eliminate muddy phenomenon; Under the situation of not stopping using plating bath, add the lactic acid complexing agent.
L. quality inspection;
M. the DIFFUSION TREATMENT of heating, temperature is 150-160 ℃, the time of insulation is 2-3 hour;
N. be coated with slushing oil;
O. the preparation of chemical nickel plating repair liquid regenerated liquid, the compound method of described chemical nickel plating repair liquid regenerated liquid comprises the steps:
(1) used nickel plating solution is filled in the channels of ligand, carry out chemical analysis, calculate the residual content of single nickel salt and two kinds of main salt of sodium hypophosphite, calculate the additional amount of other composition again according to the residual content of single nickel salt, method of calculation following (calculate by 1 liter of plating bath, unit is gram):
The additional amount of single nickel salt: 25-single nickel salt residual content
The additional amount of sodium hypophosphite: 20-sodium hypophosphite residual content
The additional amount of hydroxy-propionic acid: the additional amount of 1/2 single nickel salt
The additional amount of sodium bicarbonate: the additional amount of 3/10 single nickel salt
The additional amount of boric acid: the additional amount of 1/5 single nickel salt;
(2) according to the compound method of new soln, each composition with additional amount is dissolved in the distilled water earlier, reaches dissolving fully;
(3) dissolved boric is put into heat treated in the hot water, reaches sufficient dissolving;
(4) will be dissolved into hydroxy-propionic acid in the distilled water, neutralize with the sodium bicarbonate additional amount;
(5) with nickel sulfate solution, hydroxy-propionic acid solution, the boric acid solution of additional amount, pour in order in the channels of ligand, again the sodium hypophosphite of additional amount is poured in the channels of ligand, fully stir;
(6) adjust pH value,, pH value is adjusted in the pH value scope of former setting, add the distilled water of Football Association's part with sodium hydroxide or ammonia soln.
Claims (4)
1. method of repairing the bearing dimension discrepancy with chemical nickel plating, it is characterized in that: this method comprises the steps:
(1) bearing cleaning;
(2) with hot water preheating bearing, during preheating, the temperature of hot water is 80-90 ℃, and the time of preheating is 5-10 minute;
(3) contain following component in the preparation chemical nickel plating repair liquid, every liter of described chemical nickel plating repair liquid:
Industrial sulphuric acid nickel 25 gram commercial hypophosphorous acid sodium 20 grams
Industry hydroxy-propionic acid 25 gram industrial sodium bicarbonates 15 grams
Industrial boric acid 10 gram additives 1 gram
Wherein additive adopts oxyacetic acid, acetic acid or oxalic acid, and the pH value of plating bath is 4.5-5.1, and temperature is 85-90 ℃;
(4) go into the liquid plating, plating speed is 20-24 μ m/h;
(5) eliminate muddy phenomenon;
(6) quality inspection;
(7) DIFFUSION TREATMENT of heating, temperature is 150-160 ℃, the time of insulation is 2-3 hour;
(8) be coated with slushing oil;
(9) preparation of chemical nickel plating repair liquid regenerated liquid.
2. a kind of method of repairing the bearing dimension discrepancy with chemical nickel plating as claimed in claim 1, it is characterized in that: the compound method of described chemical nickel plating repair liquid comprises the steps:
(1) earlier industrial sulphuric acid nickel, sodium hypophosphite, additive are dissolved into respectively in the distilled water, stirring reaches sufficient dissolving;
(2) will add distilled water in the quantitative hydroxy-propionic acid, and in the sodium bicarbonate of the required adding aqueous solution that joins hydroxy-propionic acid slowly, the limit edged stirs;
(3) boric acid that will be dissolved in the distilled water is put into heat treated in 90 ℃ of hot water, and it is dissolved fully;
(4) after various chemical ingredientss are fully dissolved, be filled in the channels of ligand of setting, pour into successively in order nickel sulfate solution, in hydroxy-propionic acid solution, the boric acid solution of becoming reconciled, sodium hypophosphite solution, additive, a kind of solution of every filtration must accomplish that the limit bevelling stirs, and fills up the distilled water of setting part simultaneously;
(5) be the pH value of the test paper survey deposit fluid of 3.8-5.4 with pH value, within the scope of 4.5-5.1, then the repair liquid preparation is finished as if pH value, if be lower than this scope, then will transfer pH value with sodium hydroxide or ammonia soln;
(6) used distilled water all counts the cumulative volume of repair liquid in the process for preparation.
3. a kind of method of repairing the bearing dimension discrepancy with chemical nickel plating as claimed in claim 1 or 2, it is characterized in that: the compound method of described chemical nickel plating repair liquid regenerated liquid comprises the steps:
(1) used nickel plating solution is filled in the channels of ligand, carries out chemical analysis, calculate the residual content of single nickel salt and two kinds of main salt of sodium hypophosphite, calculate the additional amount of other composition again according to the residual content of single nickel salt, method of calculation are as follows: calculate by 1 liter of plating bath, unit is gram
The additional amount of single nickel salt: 25-single nickel salt residual content
The additional amount of sodium hypophosphite: 20-sodium hypophosphite residual content
The additional amount of hydroxy-propionic acid: the additional amount of 1/2 single nickel salt
The additional amount of sodium bicarbonate: the additional amount of 3/10 single nickel salt
The additional amount of boric acid: the additional amount of 1/5 single nickel salt;
(2) according to the compound method of new soln, each composition with additional amount is dissolved in the distilled water earlier, reaches dissolving fully;
(3) dissolved boric is put into heat treated in the hot water, reaches sufficient dissolving;
(4) will be dissolved into hydroxy-propionic acid in the distilled water, neutralize with the sodium bicarbonate additional amount;
(5) with nickel sulfate solution, hydroxy-propionic acid solution, the boric acid solution of additional amount, pour in order in the channels of ligand, again the sodium hypophosphite of additional amount is poured in the channels of ligand, fully stir;
(6) adjust pH value,, pH value is adjusted in the pH value scope of former setting, add the distilled water of Football Association's part with sodium hydroxide or ammonia soln.
4. a kind of method of repairing the bearing dimension discrepancy with chemical nickel plating as claimed in claim 1 or 2 is characterized in that: the described method of eliminating muddiness is: under the situation of not stopping using plating bath, add the lactic acid complexing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03152734 CN1267579C (en) | 2003-08-12 | 2003-08-12 | Method for restoring dimension discrepancy of bearing utilizing chemical plating nickel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03152734 CN1267579C (en) | 2003-08-12 | 2003-08-12 | Method for restoring dimension discrepancy of bearing utilizing chemical plating nickel |
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| Publication Number | Publication Date |
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| CN1485460A CN1485460A (en) | 2004-03-31 |
| CN1267579C true CN1267579C (en) | 2006-08-02 |
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| CN 03152734 Expired - Fee Related CN1267579C (en) | 2003-08-12 | 2003-08-12 | Method for restoring dimension discrepancy of bearing utilizing chemical plating nickel |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993298B (en) * | 2014-04-29 | 2016-05-04 | 浏阳市三鹰新材料有限责任公司 | Nano composite plating layer process is repaired on a kind of surface of manufacturing again that is applied to |
| CN104454997A (en) * | 2014-11-17 | 2015-03-25 | 无锡市百顺机械厂 | Cleaning process for bearing |
| CN105506591B (en) * | 2015-11-11 | 2019-04-23 | 华南理工大学 | A kind of chemical plating method based on the bath preheating of reproducibility group water solution |
| CN106141560A (en) * | 2016-07-01 | 2016-11-23 | 王素英 | A kind of bearing restorative procedure |
| CN114807917A (en) * | 2022-04-20 | 2022-07-29 | 武汉纺织大学 | Chemical nickel plating process for bearing steel |
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2003
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| CN1485460A (en) | 2004-03-31 |
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Owner name: NINGXIA NORTHWEST PETROLEUM MACHINERY BEARINGS LT Free format text: FORMER OWNER: XIBEI BEARING CO., LTD. Effective date: 20070112 |
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Effective date of registration: 20070112 Address after: 750021 Yinchuan New District, the Ningxia Hui Autonomous Region, Beijing West Road Patentee after: Ningxia northwest bearing Petroleum Machinery Bearing Co., Ltd. Address before: 750021 Yinchuan New District, the Ningxia Hui Autonomous Region, Beijing West Road Patentee before: Xibei Bearing Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060802 Termination date: 20140812 |
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