CN104746091A - Cast aluminum alloy white washing descaling solution - Google Patents
Cast aluminum alloy white washing descaling solution Download PDFInfo
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- CN104746091A CN104746091A CN201510207119.0A CN201510207119A CN104746091A CN 104746091 A CN104746091 A CN 104746091A CN 201510207119 A CN201510207119 A CN 201510207119A CN 104746091 A CN104746091 A CN 104746091A
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Abstract
The invention discloses a cast aluminum alloy white washing descaling solution. The solution comprises an oxidizing agent, a complexing agent, a washing additive and a corrosion inhibitor; the oxidizing agent is selected from hydrogen peroxide and/or ammonium persulfate; the complexing agent is selected from one or more of tartaric acid, citric acid and oxalic acid; the washing additive is selected from ammonium fluoride and/or ammonium bifluoride; the corrosion inhibitor is selected from thiourea and/or allylthiourea. The white washing descaling effect of the solution is equivalent to that of the existing three-acid method process, after the white washing descaling, the surface of the cast aluminum alloy is white, the color is uniform, the subsequent procedure such as the precipitation of zinc can be carried out after the washing, and the subsequent coating combination force is good; after the solution is prepared, the pH value is 2 to 2.5; due to the existence of the corrosion inhibitor, the corrosion is not remarkable, and the dimensional precision of a workpiece is not affected; no phosphoric acid is contained, the emission of the phosphorus can be avoided, and the waste water is easy to treat; no nitric acid is contained, the emission of the nitric oxide brown smog in the production process is avoided, the production environment is improved, and the waste gas treatment is reduced.
Description
Technical field
The invention belongs to field of electroplating, relate to a kind of cast aluminium alloy particularly and whiten detergent solution.
Background technology
Usually, it is phosphoric acid (H that the scale removal operation in cast aluminium alloy product pre-electroplating treatment uses with volume ratio
3pO
485%) 50%, nitric acid (HNO is added
368%) 30% with the solution normal temperature of hydrofluoric acid (HF 40%) 10% and excess water under embathe the processing method (hereinafter referred to as " three acid systems ") of tens of seconds.
Cast aluminium alloy product is after " three acid systems " scale removal, and pure white, the uniform color in surface, can carry out the subsequent handlings such as depositing zinc after cleaning, ensures binding force of cladding material.
" three acid systems " mainly has the following disadvantages: owing to using strong phosphoric acid, concentrated nitric acid, dense hydrofluoric acid, and process for preparation is dangerous, and irritating smell is large; Phosphoric acid consumption is large, and phosphorus emission is large; Working concentration is high, and total release is large; Have a large amount of oxynitride brown fume to produce in use procedure, worsen production environment, off gas treatment amount is large; Solution corrosion is strong, and part product size removal amount is larger.
Summary of the invention
The object of the invention is to overcome existing " three acid systems " technique Problems existing, a kind of waste water being provided, exhaust gas emission is few and descale effect is suitable with " three acid systems " environmentally friendly cast aluminium alloy whitens detergent solution.
A kind of cast aluminium alloy provided by the invention whitens detergent solution, comprises oxygenant, complexing agent, washing assistant and inhibiter.
Described oxygenant is selected from hydrogen peroxide and/or ammonium persulphate.
Described complexing agent be selected from tartrate, citric acid, oxalic acid one or more.
Described washing assistant is selected from Neutral ammonium fluoride and/or ammonium bifluoride.
Described inhibiter is selected from thiocarbamide and/or thiosinamine.
Preferably, bulking value concentration during the single or multiple combination of each material of described oxygenant is
Hydrogen peroxide 30 ~ 130g/L;
Ammonium persulphate 100 ~ 200g/L.
Preferably, bulking value concentration during the single or multiple combination of each material of described complexing agent is
Tartrate 3 ~ 30g/L;
Citric acid 10 ~ 50g/L;
Oxalic acid 10 ~ 50g/L.
Preferably, bulking value concentration during the single or multiple combination of each material of described washing assistant is
Neutral ammonium fluoride 100 ~ 250g/L;
Ammonium bifluoride 100 ~ 250g/L.
Preferably, bulking value concentration during the single or multiple combination of each material of described inhibiter is
Thiocarbamide 1 ~ 50mg/L;
Thiosinamine 1 ~ 10mg/L.
Preferably, described oxygenant, complexing agent, washing assistant, inhibiter component and bulking value concentration thereof are:
Ammonium persulphate 120g/L;
Tartrate 5g/L;
Oxalic acid 10g/L;
Ammonium bifluoride 100g/L;
Thiosinamine 4mg/L.
Preferably, described oxygenant, complexing agent, washing assistant, inhibiter component and bulking value concentration thereof are:
Hydrogen peroxide 70g/L;
Ammonium persulphate 150g/L;
Tartrate 20g/L;
Citric acid 40g/L;
Oxalic acid 20g/L;
Hydrogen fluoride 200g/L;
Ammonium bifluoride 120g/L;
Thiocarbamide 35mg/L;
Thiosinamine 6mg/L.
At normal temperatures, after solution-treated cast aluminium alloy 10s ~ 120s of the present invention, product surface is pure white, uniform color, and can carry out the subsequent handlings such as depositing zinc after cleaning, subsequent plating layer bonding force is good.
Compared with existing " three acid systems " technique, beneficial effect of the present invention:
1. descale effect is suitable with " three acid systems ";
2. solution preparation complete after PH 2 ~ 2.5, and have inhibiter to exist, corrodibility is remarkable, can not affect workpiece dimensional precision;
3. not phosphoric acid, do not produce the discharge of phosphorus, wastewater treatment is easy;
4. not containing nitric acid, do not produce the discharge of oxynitride brown fume in production process, improve production environment, reduce off gas treatment.
Embodiment
In conjunction with example, the present invention is described further, but embodiments of the present invention are not limited thereto.
The preparation process that the cast aluminium alloy that the present invention relates to whitens detergent solution is as follows:
Add oxygenant, complexing agent, washing assistant, inhibiter successively, stir.
Embodiment 1
Oxygenant bulking value concentration is:
Hydrogen peroxide 40g/L
Complexing agent bulking value concentration is:
Citric acid 20g/L
The bulking value concentration of washing assistant is:
Neutral ammonium fluoride 100g/L
The bulking value concentration of inhibiter is:
Thiocarbamide 10mg/L
Embodiment 2
Oxygenant bulking value concentration is:
Ammonium persulphate 120g/L
Complexing agent bulking value concentration is:
Tartrate 5g/L
Oxalic acid 10g/L
The bulking value concentration of washing assistant is:
Ammonium bifluoride 100g/L
The bulking value concentration of inhibiter is:
Thiosinamine 4mg/L
Embodiment 3
Oxygenant bulking value concentration is:
Hydrogen peroxide 30g/L
Ammonium persulphate 100g/L
Complexing agent bulking value concentration is:
Tartrate 10g/L
Citric acid 20g/L
Oxalic acid 20g/L
The bulking value concentration of washing assistant is:
Neutral ammonium fluoride 100g/L
Ammonium bifluoride 100g/L
The bulking value concentration of inhibiter is:
Thiocarbamide 20mg/L
Thiosinamine 6mg/L
Embodiment 4
Oxygenant bulking value concentration is:
Hydrogen peroxide 70g/L
Ammonium persulphate 150g/L
Complexing agent bulking value concentration is:
Tartrate 20g/L
Citric acid 40g/L
Oxalic acid 20g/L
The bulking value concentration of washing assistant is:
Neutral ammonium fluoride 200g/L
Ammonium bifluoride 120g/L
The bulking value concentration of inhibiter is:
Thiocarbamide 35mg/L
Thiosinamine 6mg/L.
These are only preferred embodiment of the present invention, be not limited to the present invention, all any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in invention.
Claims (7)
1. cast aluminium alloy whitens a detergent solution, and this whitens detergent solution and contains oxygenant, complexing agent, washing assistant and inhibiter, it is characterized in that:
Described oxygenant is selected from hydrogen peroxide and/or ammonium persulphate;
Described complexing agent be selected from tartrate, citric acid, oxalic acid one or more;
Described washing assistant is selected from Neutral ammonium fluoride and/or ammonium bifluoride;
Described inhibiter is selected from thiocarbamide and/or thiosinamine.
2. cast aluminium alloy according to claim 1 whitens detergent solution, it is characterized in that, each material of described oxygenant bulking value concentration that is single or multiple combination is
Hydrogen peroxide 30 ~ 130g/L;
Ammonium persulphate 100 ~ 200g/L.
3. cast aluminium alloy according to claim 1 whitens detergent solution, it is characterized in that, each material of described complexing agent bulking value concentration that is single or multiple combination is
Tartrate 3 ~ 30g/L;
Citric acid 10 ~ 50g/L;
Oxalic acid 10 ~ 50g/L.
4. cast aluminium alloy according to claim 1 whitens detergent solution, it is characterized in that, each material of described washing assistant bulking value concentration that is single or multiple combination is
Neutral ammonium fluoride 100 ~ 250g/L;
Ammonium bifluoride 100 ~ 250g/L.
5. cast aluminium alloy according to claim 1 whitens detergent solution, it is characterized in that, each material of described inhibiter bulking value concentration that is single or multiple combination is
Thiocarbamide 1 ~ 50mg/L;
Thiosinamine 1 ~ 10mg/L.
6. whiten detergent solution according to the arbitrary described cast aluminium alloy of claim 1 ~ 5, it is characterized in that, described oxygenant, complexing agent, washing assistant, inhibiter component and bulking value concentration thereof are:
Ammonium persulphate 120g/L;
Tartrate 5g/L;
Oxalic acid 10g/L;
Ammonium bifluoride 100g/L;
Thiosinamine 4mg/L.
7. whiten detergent solution according to the arbitrary described cast aluminium alloy of claim 1 ~ 5, it is characterized in that, described oxygenant, complexing agent, washing assistant, inhibiter component and bulking value concentration thereof are:
Hydrogen peroxide 70g/L;
Ammonium persulphate 150g/L;
Tartrate 20g/L;
Citric acid 40g/L;
Oxalic acid 20g/L;
Hydrogen fluoride 200g/L;
Ammonium bifluoride 120g/L;
Thiocarbamide 35mg/L;
Thiosinamine 6mg/L.
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|---|---|---|---|
| CN201510207119.0A CN104746091A (en) | 2015-04-28 | 2015-04-28 | Cast aluminum alloy white washing descaling solution |
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|---|---|---|---|
| CN201510207119.0A CN104746091A (en) | 2015-04-28 | 2015-04-28 | Cast aluminum alloy white washing descaling solution |
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|---|---|
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Family
ID=53586320
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483718A (en) * | 2016-01-19 | 2016-04-13 | 博罗县东明化工有限公司 | Wash-whitening and descaling liquid and die-casting aluminum alloy pretreatment method |
| CN106800951A (en) * | 2017-01-12 | 2017-06-06 | 廊坊盛迪化工有限公司 | A kind of flue gas dirt matter dispersant and its compound method |
| CN106906475A (en) * | 2015-12-23 | 2017-06-30 | 比亚迪股份有限公司 | A kind of polishing agent and preparation method thereof and scale removal polishing method |
| CN107254682A (en) * | 2017-06-23 | 2017-10-17 | 深圳市威通科技有限公司 | Descaling agent |
| CN107338442A (en) * | 2017-06-20 | 2017-11-10 | 祝国忠 | Handle copper and the lotion and its processing method of copper alloy surface oxide layer |
| CN107502899A (en) * | 2017-09-04 | 2017-12-22 | 深圳市威通科技有限公司 | Cleaning and whitening descaling liquid, application thereof and pretreatment method of aluminum alloy |
| WO2018006274A1 (en) * | 2016-07-05 | 2018-01-11 | 深圳市恒兆智科技有限公司 | Cast aluminum workpiece cleaning and bleaching agent, and cast aluminum workpiece and surface cleaning and bleaching method thereof |
| CN107794542A (en) * | 2017-10-24 | 2018-03-13 | 天津圳鹏清洗技术开发有限公司 | A kind of normal temperature scale removal brightening agent of high silicon cast aluminium part |
| CN107868970A (en) * | 2017-12-05 | 2018-04-03 | 博罗县东明化工有限公司 | Die casting aluminium surface treatment method |
| CN107974703A (en) * | 2017-12-07 | 2018-05-01 | 佛山市高明高盛铝业有限公司 | A kind of preparation method of resistance to marine environment aluminum alloy surface protective layer |
| CN109468649A (en) * | 2018-12-27 | 2019-03-15 | 广州三孚新材料科技股份有限公司 | Alkaline descaling agent for magnesium alloy |
| CN110438509A (en) * | 2019-08-15 | 2019-11-12 | 昆山兰博旺新材料技术服务有限公司 | Pickling solution for pack alloy passivation technology |
| CN110616432A (en) * | 2019-08-26 | 2019-12-27 | 广东药科大学 | Zirconium-containing film layer removing liquid and use method thereof |
| CN110714214A (en) * | 2019-11-19 | 2020-01-21 | 东莞市百镀通五金电镀实业有限公司 | Electroplating pretreatment process for die-casting aluminum alloy |
| WO2020192731A1 (en) * | 2019-03-26 | 2020-10-01 | 高瑞安 | Two-in-one processing solution for oil removal from and polishing of aluminum alloy, and method for oil removal from and polishing of aluminum alloy |
| CN113774387A (en) * | 2021-09-23 | 2021-12-10 | 东莞市四辉表面处理科技有限公司 | Smokeless and odorless bleaching agent for die-casting aluminum and preparation method and application thereof |
| CN114875418A (en) * | 2022-04-21 | 2022-08-09 | 深圳市新骏翔科技有限公司 | Neutral aluminum product bleaching agent and preparation method thereof |
| CN116288384A (en) * | 2023-01-06 | 2023-06-23 | 广东誉品实业有限公司 | Pickling solution for removing ash on surface of aluminum-based silicon carbide composite material |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906475A (en) * | 2015-12-23 | 2017-06-30 | 比亚迪股份有限公司 | A kind of polishing agent and preparation method thereof and scale removal polishing method |
| CN105483718A (en) * | 2016-01-19 | 2016-04-13 | 博罗县东明化工有限公司 | Wash-whitening and descaling liquid and die-casting aluminum alloy pretreatment method |
| WO2018006274A1 (en) * | 2016-07-05 | 2018-01-11 | 深圳市恒兆智科技有限公司 | Cast aluminum workpiece cleaning and bleaching agent, and cast aluminum workpiece and surface cleaning and bleaching method thereof |
| CN106800951A (en) * | 2017-01-12 | 2017-06-06 | 廊坊盛迪化工有限公司 | A kind of flue gas dirt matter dispersant and its compound method |
| CN107338442A (en) * | 2017-06-20 | 2017-11-10 | 祝国忠 | Handle copper and the lotion and its processing method of copper alloy surface oxide layer |
| CN107254682A (en) * | 2017-06-23 | 2017-10-17 | 深圳市威通科技有限公司 | Descaling agent |
| CN107502899A (en) * | 2017-09-04 | 2017-12-22 | 深圳市威通科技有限公司 | Cleaning and whitening descaling liquid, application thereof and pretreatment method of aluminum alloy |
| CN107794542A (en) * | 2017-10-24 | 2018-03-13 | 天津圳鹏清洗技术开发有限公司 | A kind of normal temperature scale removal brightening agent of high silicon cast aluminium part |
| CN107868970A (en) * | 2017-12-05 | 2018-04-03 | 博罗县东明化工有限公司 | Die casting aluminium surface treatment method |
| CN107974703A (en) * | 2017-12-07 | 2018-05-01 | 佛山市高明高盛铝业有限公司 | A kind of preparation method of resistance to marine environment aluminum alloy surface protective layer |
| CN109468649A (en) * | 2018-12-27 | 2019-03-15 | 广州三孚新材料科技股份有限公司 | Alkaline descaling agent for magnesium alloy |
| WO2020192731A1 (en) * | 2019-03-26 | 2020-10-01 | 高瑞安 | Two-in-one processing solution for oil removal from and polishing of aluminum alloy, and method for oil removal from and polishing of aluminum alloy |
| CN110438509A (en) * | 2019-08-15 | 2019-11-12 | 昆山兰博旺新材料技术服务有限公司 | Pickling solution for pack alloy passivation technology |
| CN110616432A (en) * | 2019-08-26 | 2019-12-27 | 广东药科大学 | Zirconium-containing film layer removing liquid and use method thereof |
| CN110714214A (en) * | 2019-11-19 | 2020-01-21 | 东莞市百镀通五金电镀实业有限公司 | Electroplating pretreatment process for die-casting aluminum alloy |
| CN113774387A (en) * | 2021-09-23 | 2021-12-10 | 东莞市四辉表面处理科技有限公司 | Smokeless and odorless bleaching agent for die-casting aluminum and preparation method and application thereof |
| CN114875418A (en) * | 2022-04-21 | 2022-08-09 | 深圳市新骏翔科技有限公司 | Neutral aluminum product bleaching agent and preparation method thereof |
| CN114875418B (en) * | 2022-04-21 | 2024-06-25 | 深圳市新骏翔科技有限公司 | Neutral aluminum bleaching agent and preparation method thereof |
| CN116288384A (en) * | 2023-01-06 | 2023-06-23 | 广东誉品实业有限公司 | Pickling solution for removing ash on surface of aluminum-based silicon carbide composite material |
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