CN104109865A - Environment-friendly type normal-temperature efficient steel-pipe acid lotion - Google Patents
Environment-friendly type normal-temperature efficient steel-pipe acid lotion Download PDFInfo
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- CN104109865A CN104109865A CN201310137672.2A CN201310137672A CN104109865A CN 104109865 A CN104109865 A CN 104109865A CN 201310137672 A CN201310137672 A CN 201310137672A CN 104109865 A CN104109865 A CN 104109865A
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Abstract
The invention relates to the technical field of normal-temperature steel-pipe acid lotions, and concretely relates to a steel-pipe acid lotion prepared by taking phosphoric acid as a main composition for acidic washing and combining with a wetting agent, a complexing agent, a corrosion inhibitor and the like. The steel-pipe acid lotion comprises, in percent by mass, 10%-20% of phosphoric acid, 2%-8% of a wetting agent, 2%-10% of a complexing agent, 2%-8% of a corrosion inhibitor, 2%-6% of a synergist, and the balance water. The enforcement temperature of the technology is 20-50 DEG C. According to the acid lotion, the employed acid is phosphoric acid, phosphoric acid is not easy to volatilize, has no harmful decomposition products, is stable in properties, does not cause pollution because of volatilization during washing, and is not easy to fail; and also phosphoric acid gives play to surface passivation effect in processing process of stainless steel surface, enables the stainless steel surface to be relatively bright, alleviates the once-more oxidation speed of the surface and reduces metal loss. By combining with the corresponding wetting agent, the complexing agent, the corrosion inhibitor and the synergist, the obtained environment-friendly type normal-temperature efficient steel-pipe acid lotion is less in pollution, low in energy consumption and high in efficiency.
Description
Technical field
The present invention relates to normal temperature acid cleaning of steel tube agent technical field, specifically a kind ofly take phosphoric acid and as pickling main component, be aided with the formulated acid cleaning of steel tube agent such as wetting agent, complexing agent, inhibiter.
Background technology
Since reform and opening-up, China's seamless steel tube production technology is rapidly developed, and new equipment and technology continues to bring out, and has become World Steel pipe manufacturer big country, and weldless steel tube product category, output increase considerably simultaneously.In steel pipe's production process, because high temperature oxidation produces a large amount of ferriferous oxides, after fouling, form oxide skin.Conventionally adopting the method descaling is pickling, and traditional acid cleaning process, mostly adopts the acid solution of heterogeneity as industrial sulphuric acid, industrial nitric acid, hydrofluoric acid, hydrochloric acid etc., by long-time immersion in pickling tank, oxide skin is removed.In production and application process, produce the toxic and harmfuls such as a large amount of acid mists and nitrogen peroxide, nitrogen protoxide, Nitrous Oxide, hydrogenchloride, the health that has had a strong impact on pollutant atmosphere and endangered operator, and be also quite serious to the corrosion of various device, in operating process, the careless slightly steel pipe excessive erosion phenomenon that also can produce causes workpiece surface coarse, has a strong impact on the quality of acid cleaning of steel tube.Therefore carry out research work that oxide skin high-efficiency environment friendly removes process aspect and there is very important social effect and huge economic implications for the energy-saving and emission-reduction of stainless steel industry.
Summary of the invention
The object of the invention is to overcome the deficiency that above-mentioned existing pickling technology exists at aspects such as environmental protection and safety, provide a kind of and take phosphoric acid and as pickling main component, be aided with the formulated environment-friendly type normal-temperature efficient acid cleaning of steel tube agent such as wetting agent, complexing agent, inhibiter.
The object of the invention is to be achieved through the following technical solutions: the agent of a kind of environment-friendly type normal-temperature efficient acid cleaning of steel tube, its component and content are: phosphatase 11 0%-20%, wetting agent 2%-8%, complexing agent 2%-10%, inhibiter 2%-8%, synergistic agent 2%-6%, surplus is water, wherein said ratio is mass percent, and its process implementing temperature is 20～50 ℃.
The acid of further using is phosphoric acid.
Further wetting agent is a certain in nonionogenic tenside or anion surfactant.
Further anion surfactant is sulfonate type or sulfuric acid type, and nonionogenic tenside is polyoxyethylene-type.
Further complexing agent is one or both in tartrate and salt, citric acid and salt thereof, gluconic acid and salt thereof.
If further inhibiter is a kind of in hexamethylenetetramine fourth, thiocarbamide, urotropine and tetrahydroglyoxaline.
Further synergistic agent is a kind of in butynediol, ethylene glycol, glycerol.
Pickle solution of the present invention, the acid of use is phosphoric acid, and phosphoric acid is not volatile, and without hazardous decomposition products, stable in properties can, because volatilization pollutes, not be difficult for losing efficacy in washing process; Phosphoric acid can play surface passivation effect in stainless steel surface is processed simultaneously, makes stainless steel surface brighter, and slows down the surface speed of oxidation again, reduces metal loss.Be aided with corresponding wetting agent, complexing agent, inhibiter and synergistic agent, configuration obtains the agent of this environment-friendly type normal-temperature efficient acid cleaning of steel tube, and pollution less, energy consumption is low, efficiency is high.
Embodiment
Below by specific embodiment, describe the present invention.
Example 1
By 43g (0.2mol) SnSO
4, 57.4g (0.2mol) ZnSO
47H
2o is dissolved in deionized water, then adds 52.8g (0.5mol) (NH
4)
2sO
4, then add 121.5g (0.5mol) Triammonium citrate, then add 10g xitix, finally add 0.5g anion surfactant and 2.0g nonionogenic tenside, be settled to 1L, as electrodeposit liquid.Cutting copper sheet, making its surface-area is 40mm * 40mm, successively through 600#, zone of oxidation is removed in the polishing of 1000#SiC silicon carbide paper, with deionized water rinsing, dries, again the matrix after polishing washing is placed in after acetone ultrasonic cleaning 10min, take out and dry, last, the dilute sulphuric acid that matrix is placed in to volumetric concentration 10% activates 30s.Matrix is connected with DC power cathode, and graphite is connected with DC power anode, and matrix and graphite are immersed to electrodeposit liquid, forms loop, then carries out continuous current galvanic deposit and prepares tin-zinc alloy coating, and depositing current density is 0.5A/dm
2, depositing time is 20min, obtains the tin-zinc alloy coating containing zinc 5%, parameter fitting corrosion electric current density is 4.492e-7A/cm
2.
Example 2
By 43g (0.2mol) SnSO
4, 57.4g (0.2mol) ZnSO
47H
2o is dissolved in deionized water, then adds 52.8g (0.5mol) (NH
4)
2sO
4, then add 120g (0.8mol) tartrate, then add 10g xitix, finally add 0.3g anion surfactant and 1.5g nonionogenic tenside, be settled to 1L, as electrodeposit liquid.Cutting copper sheet, making its surface-area is 40mm * 40mm, successively through 600#, zone of oxidation is removed in the polishing of 1000#SiC silicon carbide paper, with deionized water rinsing, dries, again the matrix after polishing washing is placed in after acetone ultrasonic cleaning 10min, take out and dry, last, the dilute sulphuric acid that matrix is placed in to volumetric concentration 10% activates 30s.Matrix is connected with DC power cathode, and graphite is connected with DC power anode, and matrix and graphite are immersed to electrodeposit liquid, forms loop, then carries out continuous current galvanic deposit and prepares tin-zinc alloy coating, and depositing current density is 1.5A/dm
2, depositing time is 30min, obtains the tin-zinc alloy coating containing zinc 30%, parameter fitting corrosion electric current density is 9.393e-7A/cm
2.
Example 3
By 43g (0.2mol) SnSO
4, 57.4g (0.2mol) ZnSO
47H
2o is dissolved in deionized water, then adds 52.8g (0.5mol) (NH
4)
2sO
4, then add 120g (0.8mol) tartrate, then add 10g xitix, finally add 0.5g anion surfactant and 1.0g nonionogenic tenside, be settled to 1L, as electrodeposit liquid.Cutting steel plate, making its surface-area is 40mm * 40mm, successively through 600#, zone of oxidation is removed in the polishing of 1000#SiC silicon carbide paper, with deionized water rinsing, dries, again the matrix after polishing washing is placed in after acetone ultrasonic cleaning 10min, take out and dry, last, the dilute sulphuric acid that matrix is placed in to volumetric concentration 10% activates 30s.Matrix is connected with DC power cathode, and graphite is connected with DC power anode, and matrix and graphite are immersed to electrodeposit liquid, forms loop, then carries out continuous current galvanic deposit and prepares tin-zinc alloy coating, and depositing current density is 1.0A/dm
2, depositing time is 60min, obtains the tin-zinc alloy coating containing zinc 20%, parameter fitting corrosion electric current density is 8.634e-6A/cm
2.
Claims (7)
1. environment-friendly type normal-temperature efficient acid cleaning of steel tube agent, it is characterized in that, its component and content are: phosphatase 11 0%-20%, wetting agent 2%-8%, complexing agent 2%-10%, inhibiter 2%-8%, synergistic agent 2%-6%, surplus is water, and wherein said ratio is mass percent, and its process implementing temperature is 20～50 ℃.
2. a kind of environment-friendly type normal-temperature efficient acid cleaning of steel tube according to claim 1 agent, is characterized in that, the acid of use is phosphoric acid.
3. a kind of environment-friendly type normal-temperature efficient acid cleaning of steel tube according to claim 1 agent, is characterized in that, wetting agent is a certain in nonionogenic tenside or anion surfactant.
4. a kind of environment-friendly type normal-temperature efficient acid cleaning of steel tube according to claim 3 agent, is characterized in that, anion surfactant is sulfonate type or sulfuric acid type, and described nonionogenic tenside is polyoxyethylene-type.
5. a kind of environment-friendly type normal-temperature efficient acid cleaning of steel tube according to claim 1 agent, is characterized in that, complexing agent is one or both in tartrate and salt, citric acid and salt thereof, gluconic acid and salt thereof.
6. a kind of environment-friendly type normal-temperature efficient acid cleaning of steel tube according to claim 1 agent, is characterized in that, if inhibiter is a kind of in hexamethylenetetramine fourth, thiocarbamide, urotropine and tetrahydroglyoxaline.
7. a kind of environment-friendly type normal-temperature efficient acid cleaning of steel tube according to claim 1 agent, is characterized in that, synergistic agent is a kind of in butynediol, ethylene glycol, glycerol.
Priority Applications (1)
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| CN201310137672.2A CN104109865A (en) | 2013-04-19 | 2013-04-19 | Environment-friendly type normal-temperature efficient steel-pipe acid lotion |
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| CN201310137672.2A CN104109865A (en) | 2013-04-19 | 2013-04-19 | Environment-friendly type normal-temperature efficient steel-pipe acid lotion |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775127A (en) * | 2015-04-23 | 2015-07-15 | 衡水京华制管有限公司 | Acid wash for removing ferric oxide on surfaces of steel tubes |
| CN108851254A (en) * | 2017-05-10 | 2018-11-23 | 福建省仕泓商贸发展有限公司 | A kind of production method of footgear and footgear obtained |
| CN109183047A (en) * | 2018-08-06 | 2019-01-11 | 辽宁科技大学 | Pickling processes remover and its preparation and application before a kind of wire drawing |
| CN110318048A (en) * | 2019-07-25 | 2019-10-11 | 新华手术器械有限公司 | A kind of passivation for stainless steel agent and preparation method thereof, application |
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| CN104775127A (en) * | 2015-04-23 | 2015-07-15 | 衡水京华制管有限公司 | Acid wash for removing ferric oxide on surfaces of steel tubes |
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| CN108851254A (en) * | 2017-05-10 | 2018-11-23 | 福建省仕泓商贸发展有限公司 | A kind of production method of footgear and footgear obtained |
| CN109183047A (en) * | 2018-08-06 | 2019-01-11 | 辽宁科技大学 | Pickling processes remover and its preparation and application before a kind of wire drawing |
| CN109183047B (en) * | 2018-08-06 | 2020-08-21 | 辽宁科技大学 | Stripping agent for pickling treatment before wire drawing and preparation and use methods thereof |
| CN110318048A (en) * | 2019-07-25 | 2019-10-11 | 新华手术器械有限公司 | A kind of passivation for stainless steel agent and preparation method thereof, application |
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Application publication date: 20141022 |