CN102154647A - Acid etching treatment solution and treatment method for aluminum and aluminum alloy products - Google Patents
Acid etching treatment solution and treatment method for aluminum and aluminum alloy products Download PDFInfo
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- CN102154647A CN102154647A CN2011100706251A CN201110070625A CN102154647A CN 102154647 A CN102154647 A CN 102154647A CN 2011100706251 A CN2011100706251 A CN 2011100706251A CN 201110070625 A CN201110070625 A CN 201110070625A CN 102154647 A CN102154647 A CN 102154647A
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- acid etching
- acid
- treatment solution
- aluminum
- etching liquid
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Abstract
The invention discloses an acid etching treatment solution and a treatment method for aluminum and aluminum alloy products. The acid etching treatment solution has density of between 1.60 and 1.70kg/L; and 100L of acid etching treatment solution comprises the following raw materials: 130 to 150kg of phosphoric acid with mass fraction of between 80 percent and 90 percent, 8 to 12kg of nitric acid with mass fraction of between 60 percent and 70 percent, 1 to 3kg of Al, 2 to 4kg of stabilizer and 10 to 20L of water. The acid etching treatment solution is acidic and does not react with stainless steel (SUS-316L), titanium and alloy, so that the acid etching treatment solution can be applied to an automatic production line, comprises simple components, and is easy to detect and analyze and convenient to control.
Description
Technical field
The present invention relates to the metal products technical field of surface, relate in particular to the acid etching liquid and the treatment process of a kind of aluminium and alloy product thereof.
Background technology
The most employing of existing aluminum products industry acid etching fluorinated hydrogen ammonium etc. contains F
-Treatment solution handle, the reaction of this type of acid etching liquid and product is violent, Al
3+Generation is many and fast, is difficult for taking out of, and speed of reaction changes fast, unstable product quality; F
-Be difficult for detecting polishing fluid analysis, control difficulty; Contain F
-Treatment solution corrodibility strong, all can react with common metal and glassware, generally can not apply to automation line, on manual line, use only, cause processing efficiency low.
Summary of the invention
The invention provides the acid etching liquid of a kind of aluminium and alloy product thereof, it does not contain F-, does not corrode container, the easy check and analysis of each component, and it is controlled to handle the back quality of item.
The acid etching liquid of a kind of aluminium and alloy product thereof, in 100L, its raw material consists of:
Described aluminum products acid etching liquid density is 1.60～1.70kg/L, is preferably 1.60～1.65kg/L.
Water is the proportion conditioning agent, and treatment solution proportion is the most important parameters that influences extent of corrosion, and is big as the extent of corrosion of the little then cloudy surface of proportion, littler than the extent of corrosion of great then cloudy surface.
Stablizer can be alleviated processing parameter the influence of subtle change to treatment effect takes place in the volume production process.Can form by the neutralized verdigris of 0.5～1kg, the ammonium acetate of 0.5～1kg and the carbonyl diamine of 1～2kg.
Cu
2+(neutralized verdigris) is the stablizer of luminance brightness, makes this handle liquid temp when changing for ± 1.5 ℃, and luminance brightness changes visual being difficult to and realizes.
CH
3COO
-(neutralized verdigris, ammonium acetate) is the stablizer of extent of corrosion, make this handle liquor ratio to focus on ± 0.01 when changing, " mist " degree changes visual being difficult to be realized, guarantees that product surface produces even scattering cloudy surface.
NH
4+(ammonium acetate) and carbonyl diamine can suppress and reduce nitric acid and generate nitrogen protoxide (NO), nitrogen peroxide (NO
2) wait oxynitride.
Metal A l is dissolved in acid and generates Al
3+, Al
3+Use as inhibitor, controlling speed of reaction, make this reacting phase to gentleness.Under this concentration, the Al that generates in the production process
3+The Al that takes out of with workpiece, Workpiece carrier
3+In a basic balance, reacting phase is to steadily, constant product quality.
The present invention also provides a kind of aluminum products acid etching method, comprising: the aluminum products after the degreasing are inserted acid etching liquid, handled 2～4 minutes down at 75～90 ℃.
Nitric acid is volatile in the production process, per hour must add the massfraction that accounts for cumulative volume 0.25 ± 0.1% and be 63% nitric acid, keeps nitric acid content more steady.
Because the acid etching process temperature is higher, the water yield that the comprehensive meeting of evaporation of water and drag-out is brought into greater than workpiece, Workpiece carrier was measured affirmation every about 2 hours with specific gravity hydrometer, and added less water adjustment density to 1.60～1.70kg/L, and extent of corrosion is consistent.
With respect to prior art, acid etching liquid of the present invention mainly contains following advantage:
Acid etching liquid of the present invention is acid, and stainless steel (SUS-316L), titanium and alloy " are not reacted ", therefore may be used on the automatic production line, and composition is simple, and control is convenient in easily check and analysis.
Embodiment
Embodiment 1
Acid etching liquid with preparation 100L is example, earlier in reactor, pour 3 barrels of phosphoric acid (35Kg/ buckets into, massfraction 85%), add 8L nitric acid (massfraction 63%) again, dissolve the carbonyl diamine of 500g ammonium acetate, 500g neutralized verdigris, 1kg respectively with small amount of thermal water after, sneak in the above-mentioned acid solution, be warming up to 100～110 ℃, the metallic aluminium 1kg (dividing 2～3 addings) that adds " totally " (removing grease) simultaneously, in molten aluminium process, add altogether 10L of entry in batches, treat aluminium molten intact after, add one barrel of phosphoric acid again, water constant volume, test proportion are 1.68kg/L (surveying down for 80 ℃).
Embodiment 2
Acid etching liquid with preparation 100L is example, earlier in reactor, pour phosphatase 11 00kg (massfraction 85%) into, add 8L nitric acid (massfraction 63%) again, dissolve the carbonyl diamine of 500g ammonium acetate, 500g neutralized verdigris, 1kg respectively with small amount of thermal water after, sneak in the above-mentioned acid solution, be warming up to 100～110 ℃, the metallic aluminium 1kg (dividing 2～3 addings) that adds " totally " (removing grease) simultaneously, in molten aluminium process, add entry 12L altogether in batches, treat aluminium molten intact after, add one barrel of phosphoric acid again, water constant volume, test proportion are 1.65kg/L (surveying down for 80 ℃).
Embodiment 3
Acid etching liquid with preparation 100L is example, earlier in reactor, pour phosphatase 79 5kg (massfraction 85%) into, add 6L nitric acid (massfraction 63%) again, dissolve the carbonyl diamine of 1kg ammonium acetate, 1kg neutralized verdigris, 2kg respectively with small amount of thermal water after, sneak in the above-mentioned acid solution, be warming up to 100～110 ℃, the metallic aluminium 2kg (dividing 2～3 addings) that adds " totally " (removing grease) simultaneously, in molten aluminium process, add entry 15L altogether in batches, treat aluminium molten intact after, add one barrel of phosphoric acid again, water constant volume, test proportion are 1.60kg/L (80 ℃ of surveys).
Handle 1070 stretching aluminium products with above-mentioned treatment solution:
Bundle (lipstick tube parts) in the 1070 stretching aluminium is placed on acid degreasing fluid (phosphoric acid 35g/L, butoxy ethanol 70mL/L) in 1 minute, it is clean to take out washing, put into the acid etching liquid that above-mentioned three kinds of embodiment make, control treatment solution temperature is 75～90 ℃, takes out after 3 minutes, takes out and cleans, test every index, shown in the table specific as follows:
| Performance index | Testing method | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Mist degree | Range estimation | Shallow | Darker | Deeply |
| Gloss | Range estimation | Bright | Brighter | Secretly |
Claims (6)
1. the acid etching liquid of aluminium and alloy product thereof is characterized in that density is 1.60～1.70kg/L, and in 100L, raw material consists of:
2. acid etching liquid according to claim 1 is characterized in that, described density is 1.60～1.65kg/L.
3. acid etching liquid according to claim 1 is characterized in that, described stablizer is made up of the neutralized verdigris of 0.5～1kg, the ammonium acetate of 0.5～1kg and the carbonyl diamine of 1～2kg.
4. acid etching liquid according to claim 1 is characterized in that, described phosphoric acid quality mark is 85%.
5. acid etching liquid according to claim 1 is characterized in that, described nitric acid massfraction is 63%.
6. the acid etching method of aluminium and alloy product thereof comprises: the aluminum or aluminum alloy goods after the degreasing are inserted in the described acid etching liquid of claim 1, handled 2～4 minutes down at 75～90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100706251A CN102154647A (en) | 2011-03-23 | 2011-03-23 | Acid etching treatment solution and treatment method for aluminum and aluminum alloy products |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100706251A CN102154647A (en) | 2011-03-23 | 2011-03-23 | Acid etching treatment solution and treatment method for aluminum and aluminum alloy products |
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|---|---|
| CN102154647A true CN102154647A (en) | 2011-08-17 |
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| CN2011100706251A Pending CN102154647A (en) | 2011-03-23 | 2011-03-23 | Acid etching treatment solution and treatment method for aluminum and aluminum alloy products |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112064006A (en) * | 2020-09-23 | 2020-12-11 | 东莞长盈精密技术有限公司 | Passivation method for copper piece |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1943358A (en) * | 2006-10-26 | 2007-04-11 | 沙隆达集团公司 | Hostathion micro emulsion and its preparing method |
| CN1320608C (en) * | 2002-04-24 | 2007-06-06 | 三菱化学株式会社 | Etching agent and etching method |
| CN101476126A (en) * | 2009-01-19 | 2009-07-08 | 山西大学 | Aluminum product chemical polishing solution and polishing method thereof |
-
2011
- 2011-03-23 CN CN2011100706251A patent/CN102154647A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320608C (en) * | 2002-04-24 | 2007-06-06 | 三菱化学株式会社 | Etching agent and etching method |
| CN1943358A (en) * | 2006-10-26 | 2007-04-11 | 沙隆达集团公司 | Hostathion micro emulsion and its preparing method |
| CN101476126A (en) * | 2009-01-19 | 2009-07-08 | 山西大学 | Aluminum product chemical polishing solution and polishing method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 《现代铝加工生产技术丛书》 20090430 吴小源等 铝型材表面处理前的预处理技术 冶金工业出版社 42-43 1-6 , * |
| 吴小源等: "《现代铝加工生产技术丛书》", 30 April 2009, article "铝型材表面处理前的预处理技术", pages: 42-43 * |
| 方景礼: "铝及铝合金制件的化学抛光", 《电镀与涂饰》, vol. 24, no. 9, 30 September 2005 (2005-09-30), pages 42 - 45 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112064006A (en) * | 2020-09-23 | 2020-12-11 | 东莞长盈精密技术有限公司 | Passivation method for copper piece |
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Application publication date: 20110817 |