CN103290448A - Metal surface corrosion-resistant treatment method - Google Patents
Metal surface corrosion-resistant treatment method Download PDFInfo
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- CN103290448A CN103290448A CN2013101641291A CN201310164129A CN103290448A CN 103290448 A CN103290448 A CN 103290448A CN 2013101641291 A CN2013101641291 A CN 2013101641291A CN 201310164129 A CN201310164129 A CN 201310164129A CN 103290448 A CN103290448 A CN 103290448A
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Abstract
The invention discloses a metal surface corrosion-resistant treatment method, comprising the following steps of: (1) performing high-temperature treatment on the surface of a metal, and then grinding and polishing; (2) performing alkali cleaning on the metal; (3) performing acid cleaning on the metal; (4) performing electrode treatment; and (5) closing. The metal surface corrosion-resistant treatment method is low in production cost and achieves a good corrosion-resistant effect, so that the environment is greatly protected; and the method is particularly suitable for industrial production.
Description
Technical field
The present invention relates to a kind of anti-corrosion of metal treatment process, particularly, relate to the anti-corrosion treatment process in a kind of metallic surface.
Background technology
Metallic substance is subjected to the effect of surrounding medium and damages, and is called metallic corrosion.The corrosion of metal is modal etch state.During corrosion, chemistry or electrochemistry heterogeneous reaction having taken place at the interface of metal, makes metal change oxidation (ion) state over to.Mechanical properties such as the intensity of the remarkable reduction of this meeting metallic substance, plasticity, toughness, destroy the geometrical shape of hardware, increase the wearing and tearing between part, worsen physicalies such as electricity and optics, the work-ing life of shortening equipment, even cause catastrophic failures such as fire, blast.The financial loss that the U.S. caused because of metallic corrosion in 1975 is 70,000,000,000 dollars, account for the 4.2%. of national economy total output value then according to statistics, the annual because iron and steel loss that metallic corrosion causes accounts for indirect losses such as stopping production that 10 ~ 20%. metallic corrosion accidents of output of steel then cause, power failure and just more can't calculate.
At present, method of preventing corrosion of metals mainly contains following two kinds: (1) adopts the metal and the alloy material that are difficult for reacting with surrounding medium to come converted products, is effective anticorrosion way.For example, some metal and alloy are difficult for oxidation in air, maybe can generate fine and close passivation film, can resist acid, alkali, brine corrosion, as stainless steel, be exactly in steel, to add elements such as quantitative chromium, nickel, titanium, when the chromium constituent content surpasses 12%, just can play stainless effect. some stable performance when High Temperature High Pressure, as oxida-tion-resistant steel; Some is not perishable in air, as aluminium, zinc etc.The approach that obtains this metallic substance mainly is to adopt smelting process to change the chemical ingredients of metal, for example adds elements such as nickel, chromium, silicon, manganese, vanadium and be smelt the non-corrosive metal steel in carbon steel.Stainless steel is exactly the high quality steel that contains elements such as more chromium, nickel, titanium.Corrosion resistant low alloy steel is exactly to add the Low-Alloy Corrosion Resistant steel that elements such as micro-vanadium, titanium, rare earth are smelt in steel.In addition, for some metallic substance, can also pass through heat treating method, change the metallographic structure of metal, improve corrosion resisting property.(2) be coated with, plate nonmetal and coat of metal is made protective layer in the metallic surface, so as to separating contacting of metal and corrosive medium, thereby reduce corrosion.Material according to constituting protective layer can be divided into following a few class: on-metallic protective coating is coated in the metallic surface to organic and mineral compound, as paint, plastics, glass reinforced plastic, rubber, pitch, enamel, concrete, enamel, antirust wet goods.At metallic surface coated non-metallic protective layer, use to such an extent that be paint and plastic coating the most widely.Paint is traditional method over the past thousands of years, but paint has environmental pollution phenomenon in making lacquer and coating process, changing technology, develops to water-soluble direction.Plastic coating is anti-corrosion method with fastest developing speed in recent decades, especially organic resin is made powder coating, adopts the whole bag of tricks to form good coating in the metallic surface, has obtained unprecedented development.Technology and the technology of this respect set forth emphasis by this book.Coat of metal plates a kind of metal or alloy in the metallic surface, as protective layer, with the corrosion speed that slows down.Metal as protective layer has zinc, tin, aluminium, nickel, chromium, copper, cadmium, titanium, lead, gold and silver, palladium, rhodium and various alloys etc. usually.The method that obtains metal plating also has many.But, above method or have a lot of shortcomings, as the production cost height, anticorrosion effect is poor, and protective layer comes off easily or complex process is difficult to lastingly.
Summary of the invention
The technical problem to be solved in the present invention is to overcome existing defective, provides the metallic surface that a kind of production cost is low, anticorrosion effect is good anti-corrosion treatment process.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
The anti-corrosion treatment process in a kind of metallic surface may further comprise the steps:
(1) pyroprocessing is carried out in the metallic surface, polish then, polish;
(2) metal is carried out alkali cleaning: soak under 80 ℃ with caustic soda solution; Flushing with clean water is clean after soaking 60min;
(3) metal is carried out pickling: soak under room temperature with acetum, every 20 minutes flushing with clean water once, wash altogether 5 times, the flushing back is dry under rare gas element;
(4) electrode is handled: dried metal is put into oxidation electrolyte, and with this metal as anode electrolytic cell, select negative electrode according to the metal species of need protection; Electrolytic solution is deionized water, water glass, Sodium hexametaphosphate 99; Electroplate the back flushing with clean water;
(5) sealing: metal immerses in the confining liquid, and 45 ℃ keep getting final product in 15-20 hour down.
Particularly, the concentration of the described caustic soda solution of step (2) is massfraction 22%.
Particularly, the concentration of the described acetum of step (3) is massfraction 12%.
Particularly, the described rare gas element of step (3) is nitrogen.
The present invention has following beneficial effect:
The anti-corrosion treatment process production cost in metallic surface that the present invention proposes is low, anticorrosion effect good, greatly protected environment, is particularly suitable for suitability for industrialized production.
Embodiment
Embodiment 1
The anti-corrosion treatment process in a kind of metallic surface may further comprise the steps:
(1) pyroprocessing is carried out in the metallic surface, polish then, polish;
(2) metal is carried out alkali cleaning: soak under 80 ℃ with caustic soda solution; Flushing with clean water is clean after soaking 60min; The concentration of caustic soda solution is massfraction 22%.
(3) metal is carried out pickling: soak under room temperature with acetum, every 20 minutes flushing with clean water once, wash altogether 5 times, the flushing back is dry under rare gas element;
(4) electrode is handled: dried metal is put into oxidation electrolyte, and with this metal as anode electrolytic cell, select negative electrode according to the metal species of need protection; Electrolytic solution is deionized water, water glass, Sodium hexametaphosphate 99; Electroplate the back flushing with clean water;
(5) sealing: metal immerses in the confining liquid, and 45 ℃ keep getting final product in 20 hours down.
Embodiment 2
The anti-corrosion treatment process in a kind of metallic surface may further comprise the steps:
(1) pyroprocessing is carried out in the metallic surface, polish then, polish;
(2) metal is carried out alkali cleaning: soak under 80 ℃ with caustic soda solution; Flushing with clean water is clean after soaking 60min; The concentration of caustic soda solution is massfraction 22%.
(3) metal is carried out pickling: soak under room temperature with acetum, every 20 minutes flushing with clean water once, wash altogether 5 times, the flushing back is dry under rare gas element; The concentration of acetum is massfraction 12%.
(4) electrode is handled: dried metal is put into oxidation electrolyte, and with this metal as anode electrolytic cell, select negative electrode according to the metal species of need protection; Electrolytic solution is deionized water, water glass, Sodium hexametaphosphate 99; Electroplate the back flushing with clean water;
(5) sealing: metal immerses in the confining liquid, and 45 ℃ keep getting final product in 15 hours down.
Embodiment 3
The anti-corrosion treatment process in a kind of metallic surface may further comprise the steps:
(1) pyroprocessing is carried out in the metallic surface, polish then, polish;
(2) metal is carried out alkali cleaning: soak under 80 ℃ with caustic soda solution; Flushing with clean water is clean after soaking 60min;
(3) metal is carried out pickling: soak under room temperature with acetum, every 20 minutes flushing with clean water once, wash altogether 5 times, the flushing back is dry under rare gas element; Described rare gas element is nitrogen.
(4) electrode is handled: dried metal is put into oxidation electrolyte, and with this metal as anode electrolytic cell, select negative electrode according to the metal species of need protection; Electrolytic solution is deionized water, water glass, Sodium hexametaphosphate 99; Electroplate the back flushing with clean water;
(5) sealing: metal immerses in the confining liquid, and 45 ℃ keep getting final product in 18 hours down.
Embodiment 4
The anti-corrosion treatment process in a kind of metallic surface may further comprise the steps:
(1) pyroprocessing is carried out in the metallic surface, polish then, polish;
(2) metal is carried out alkali cleaning: soak under 80 ℃ with caustic soda solution; Flushing with clean water is clean after soaking 60min; The concentration of caustic soda solution is massfraction 22%.
(3) metal is carried out pickling: soak under room temperature with acetum, every 20 minutes flushing with clean water once, wash altogether 5 times, the flushing back is dry under rare gas element; Rare gas element is nitrogen; The concentration of acetum is massfraction 12%.
(4) electrode is handled: dried metal is put into oxidation electrolyte, and with this metal as anode electrolytic cell, select negative electrode according to the metal species of need protection; Electrolytic solution is deionized water, water glass, Sodium hexametaphosphate 99; Electroplate the back flushing with clean water;
(5) sealing: metal immerses in the confining liquid, and 45 ℃ keep getting final product in 16 hours down.
Embodiment 5
The anti-corrosion treatment process in a kind of metallic surface may further comprise the steps:
(1) pyroprocessing is carried out in the metallic surface, polish then, polish;
(2) metal is carried out alkali cleaning: soak under 80 ℃ with caustic soda solution; Flushing with clean water is clean after soaking 60min; The concentration of caustic soda solution is massfraction 22%.
(3) metal is carried out pickling: soak under room temperature with acetum, every 20 minutes flushing with clean water once, wash altogether 5 times, the flushing back is dry under rare gas element; Rare gas element is nitrogen; The concentration of acetum is massfraction 12%.
(4) electrode is handled: dried metal is put into oxidation electrolyte, and with this metal as anode electrolytic cell, select negative electrode according to the metal species of need protection; Electrolytic solution is deionized water, water glass, Sodium hexametaphosphate 99; Electroplate the back flushing with clean water;
(5) sealing: metal immerses in the confining liquid, and 45 ℃ keep getting final product in 18 hours down.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. the anti-corrosion treatment process in metallic surface is characterized in that, may further comprise the steps:
(1) pyroprocessing is carried out in the metallic surface, polish then, polish;
(2) metal is carried out alkali cleaning: soak under 80 ℃ with caustic soda solution; Flushing with clean water is clean after soaking 60min;
(3) metal is carried out pickling: soak under room temperature with acetum, every 20 minutes flushing with clean water once, wash altogether 5 times, the flushing back is dry under rare gas element;
(4) electrode is handled: dried metal is put into oxidation electrolyte, and with this metal as anode electrolytic cell, select negative electrode according to the metal species of need protection; Electrolytic solution is deionized water, water glass, Sodium hexametaphosphate 99; Electroplate the back flushing with clean water;
(5) sealing: metal immerses in the confining liquid, and 45 ℃ keep getting final product in 15-20 hour down.
2. the anti-corrosion treatment process in metallic surface according to claim 1 is characterized in that, the concentration of the described caustic soda solution of step (2) is massfraction 22%.
3. the anti-corrosion treatment process in metallic surface according to claim 1 is characterized in that, the concentration of the described acetum of step (3) is massfraction 12%.
4. the anti-corrosion treatment process in metallic surface according to claim 1 is characterized in that, the described rare gas element of step (3) is nitrogen.
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| CN2013101641291A CN103290448A (en) | 2013-05-07 | 2013-05-07 | Metal surface corrosion-resistant treatment method |
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| CN2013101641291A CN103290448A (en) | 2013-05-07 | 2013-05-07 | Metal surface corrosion-resistant treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952711A (en) * | 2014-04-16 | 2014-07-30 | 苏州热工研究院有限公司 | Continuous online treatment technique for metal surface |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0823496A1 (en) * | 1995-04-18 | 1998-02-11 | Harbin Huanya Micro - Arc Co. Ltd. | Process for producing ceramic layer by plasma enhanced electrolysis and product thereof |
| CN101311326A (en) * | 2007-05-25 | 2008-11-26 | 比亚迪股份有限公司 | Micro arc oxidation electrolytic solution for light metals and micro arc oxidation method |
| CN102677127A (en) * | 2012-06-11 | 2012-09-19 | 西北有色金属研究院 | Magnesium alloy microarc oxidation-electrophoresis composite coating and preparation method thereof |
| CN102758234A (en) * | 2012-07-26 | 2012-10-31 | 西北工业大学 | Method for preparing aluminum alloy anti-corrosion layer and electrolyte used in method |
| CN102953106A (en) * | 2012-11-20 | 2013-03-06 | 无锡常安通用金属制品有限公司 | Protective layer for metal surface and preparation thereof |
-
2013
- 2013-05-07 CN CN2013101641291A patent/CN103290448A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0823496A1 (en) * | 1995-04-18 | 1998-02-11 | Harbin Huanya Micro - Arc Co. Ltd. | Process for producing ceramic layer by plasma enhanced electrolysis and product thereof |
| CN101311326A (en) * | 2007-05-25 | 2008-11-26 | 比亚迪股份有限公司 | Micro arc oxidation electrolytic solution for light metals and micro arc oxidation method |
| CN102677127A (en) * | 2012-06-11 | 2012-09-19 | 西北有色金属研究院 | Magnesium alloy microarc oxidation-electrophoresis composite coating and preparation method thereof |
| CN102758234A (en) * | 2012-07-26 | 2012-10-31 | 西北工业大学 | Method for preparing aluminum alloy anti-corrosion layer and electrolyte used in method |
| CN102953106A (en) * | 2012-11-20 | 2013-03-06 | 无锡常安通用金属制品有限公司 | Protective layer for metal surface and preparation thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952711A (en) * | 2014-04-16 | 2014-07-30 | 苏州热工研究院有限公司 | Continuous online treatment technique for metal surface |
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Application publication date: 20130911 |