CN103243290B - Electric arc spraying pure aluminium coating sealant with high corrosion resistance, preparation process and application of sealant - Google Patents
Electric arc spraying pure aluminium coating sealant with high corrosion resistance, preparation process and application of sealant Download PDFInfo
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- CN103243290B CN103243290B CN201310187131.0A CN201310187131A CN103243290B CN 103243290 B CN103243290 B CN 103243290B CN 201310187131 A CN201310187131 A CN 201310187131A CN 103243290 B CN103243290 B CN 103243290B
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Abstract
The invention discloses an electric arc spraying pure aluminium coating sealant with high corrosion resistance. The sealant is characterized in that with one liter of sealant as the benchmark, the sealant comprises 14-21g/L of cerium nitrate, 6-9g/L of gamma-(2,3-epoxypropoxy)propyltrimethoxysilane, 16-20ml/L of diethylenetriamine, 2-4g/L of potassium permanganate and the balance of water. The invention simultaneously discloses a preparation method and application of the sealant. The sealant can carry out sealing treatment on the electric arc spraying pure aluminium coating, forms a chemical oxidation film on the surface of the coating through bonding after sealing treatment, can obviously reduce the porosity of the electric arc spraying pure aluminium coating and improve the corrosion resistance of the electric arc spraying pure aluminium coating, and is environment-friendly and pollution-free.
Description
Technical field
The present invention relates to a kind of coating sealing reagent and preparation technology and application thereof, the rotten electric arc spraying fine aluminium coating sealing reagent of especially a kind of high resistance and preparation technology and application thereof.
Background technology
Along with the development of Modern Surface Technology, there is the very hot spray coating of high performance price ratio and obtained application more and more widely.Especially arc spraying technology is the technology that a kind of low cost, efficient, energy-conservation, flexible operation and coating quality are stable, anchoring strength of coating is high, fast development at home in recent years, the advantage of self plays a role precondition is provided at corrosion-resistant field for it, for it is widely applied and lays a good foundation in more wide field.Arc spraying technology is increasingly mature, at present mainly to take steel plate etc. be matrix for domestic and international pure zinc, fine aluminium or the various compound coatings such as Al-Mg, Al-Zn, be widely applied to various land facility if pipeline, oil cylinder, tanks, boiler, bridge and coastal facility are as hull etc., can have significantly improved the performances such as its wear resistance, shock resistance, erosion resistance.Yet the coating after spraying has certain hole, its hole has a certain impact to the result of use of coating and work-ing life.Especially the forming process of arc spraying coating has determined coatingsurface and the inner hole that has some amount, unavoidable hole becomes the source region of spot corrosion, reduced the erosion resistance of coating, the porosity of spray-on coating is directly related with its resistance to corrosion, and the larger resistance to corrosion of porosity is poorer.Therefore when coating porosity is larger, its corrosion resistance is poor, can not meet the requirement of technique, thus need carry out suitable aftertreatment, to improve its resistance to corrosion.Thereby make the sealing of hole of metallic coating be treated as the operation of one necessity.
The method that solves the current main employing physical containment of sealing treatment method of sprayed metal coating is at present carried out, comprise the methods such as coating sealing, oil impregnate, high temperature resistant sealing, diffusion heat treatments, the space of filling hot spray coating, processes the sealing of hole of hot spray coating thereby realize.
Up to the present solving arc spraying coating hole sealing technology that space adopts both at home and abroad, is mainly the shielding processing by physics, is also about to hole sealing agent and applies and infiltrate hot spray coating, and then realize the sealing of hole of hot spray coating is processed.Domestic and international hole sealing agent used is generally divided into two kinds: organic hole sealing agent and mineral-type hole sealing agent.Typical organic hole sealing agent is mainly some monobasics or binary unsaturated polyester class, such as epoxy resin, resol, silicone resin etc.These organic resin class hole sealing agents can only act on coatingsurface, can not reach effective hole sealing depth.Some mineral-type hole sealing agents, if sodium silicate water glass, Sodium orthomolybdate etc. are also as the conventional hole sealing agent of a kind of coating, make simple, cheap.But shortcoming is in use, except hole sealing depth is subject to certain limitation, these hole sealing agents can shrink in process of setting, cause sealing of hole density to reduce.Under external force, the very easily embrittlement of sealing of hole medium after these sclerosis, causes coating sealing of hole poor effect.
Chinese invention patent application numbers 201210395838.6 discloses a kind of compound hole sealing agent and using method thereof of hot spray coating, and compound hole sealing agent is three layers, the consisting of of bottom hole sealing agent: H2O+SiO2+AL2O3+CrO3; Consisting of of middle layer hole sealing agent: H2O+CrO3; Consisting of of top layer hole sealing agent: H 2O+BN+CrO3, at 450～500 ℃ of temperature, carries out the solidification treatment of 1-3 hour by the hot spray coating of sealing of hole; Then brush middle layer hole sealing agent, then adopt identical curing process to be cured processing; Finally brush top layer hole sealing agent, then adopt identical curing process to be cured processing.This invention is processed mainly for the hole of sinking roller and stabilizing roller hot spray coating, and the high time of sealing treatment temperature is long.
Chinese invention patent application numbers 201210189684.5 discloses a kind of thermal Sperayed Ceramic Coatings surface-sealing method, the parts that have thermal Sperayed Ceramic Coatings are placed in to the acidic solution sensitization containing Sn2+, containing in the acidic solution of Pd 2+, activating, finally chemical nickel plating in the chemical plating fluid that contains reductive agent and nickel salt.The method can only be for ceramic coating sealing of hole, and range of application has limitation.
Chinese invention patent application numbers 201210084157.8 discloses a kind of high temperature resistant alkali steam corrosion arc spraying aluminum coatings hole sealing agent and using method thereof, and in the method, the weight part ratio of hole sealing agent consists of: polyester modified organic silicon resin 40-60 part, solidifying agent 10-30 part, aluminum oxide 1-5 part, barium sulfate 10-30 part, titanium dioxide 5-15 part, carbon black 1-5 part, solvent 10-15 part.Hole sealing agent is brushed in aluminum coating surface, thickness should be even, and guarantee the defects such as pore-free, scratch, at room temperature in the short period of time, solidify, there is good high temperature resistant alkali steam corrosion performance, although but the more common hole sealing agent performance of this method is better, mechanism is still traditional physical shielding effect.Hole sealing agent and the application thereof of Chinese invention patent application number 201110137702.0 disclosed a kind of supersonic flame spraying iron base amorphous coatings in addition, range of application is confined to Velocity Oxygen Flame Sprayed Coatings, it uses brushing or immersion process that hole sealing agent is evenly coated on to coatingsurface, standing 12 hours of room temperature, then the method that the spray-on coating of sealing of hole is respectively incubated to 2 hours successively at 100 ℃, 200 ℃, 250 ℃ temperature is as wide range of industrial applications, efficiency is still lower, and is physics sealing of hole.
Especially for baroque part, while carrying out sealing treatment with traditional hole sealing agent, some is local is difficult for applying and puts in place, shadow sealing of hole effect, and the dry of hole sealing agent need the long period, wastes time and energy.
The physical barriers of above-mentioned hole sealing agent acts on to be filled up completely with working efficiency aspect and all has deficiency the space of arc spraying coating.The needs that the corrosion resisting property of arc spraying coating improved in order to meet Industrial materials, the present invention proposes the rotten hole sealing agent of high resistance and the hole-sealing technology of specialized application and electric arc spraying fine aluminium coating, electric arc spraying fine aluminium coating is carried out to sealing of hole processing, sealing of hole is processed rear electric arc spraying fine aluminium coatingsurface reaction and can be formed in conjunction with good chemical oxide film, can significantly reduce the porosity of electric arc spraying fine aluminium coating, effectively improve the corrosion resistance of electric arc spraying fine aluminium coating, after traditional inorganic and organic sealing agent processing of the electric arc spraying fine aluminium coating of processing through electric arc spraying fine aluminium coating sealing reagent of the present invention and treatment process and traditional physical shielding effect, relatively there is better resistance to corrosion, and hole sealing agent is environment friendly and pollution-free.
Summary of the invention
The organic resin class hole sealing agent the object of the invention is in order to solve in existing conventional arc spraying fine aluminium coating hole sealing technology can not reach effective hole sealing depth, mineral-type hole sealing agent process of setting shrinks, cause sealing of hole density to reduce, the problems such as coating sealing of hole poor effect.A kind of rotten hole sealing agent of high resistance and preparation technology and application thereof that can effectively improve electric arc spraying fine aluminium coating resistance to corrosion is provided, it can carry out sealing of hole processing to system electric arc spraying fine aluminium coating, and in its surface bonding, forming chemical oxide film after hole sealing agent sealing of hole is processed, can significantly reduce the porosity of electric arc spraying fine aluminium coating, improve the resistance to corrosion of electric arc spraying fine aluminium coating, and hole sealing agent is environment friendly and pollution-free.
For achieving the above object, the present invention adopts following technical proposals:
The rotten electric arc spraying fine aluminium of a kind of high resistance coating sealing reagent, the 1 liter of described hole sealing agent of take is benchmark, comprise following component, cerous nitrate 14-21 grams per liter, γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane 6-9 grams per liter, diethylenetriamine 16-20 milliliter/liter, potassium permanganate 2-4 grams per liter, surplus is water.
This hole sealing agent is prepared according to the following steps:
1) cerous nitrate is joined in 100ml water, stir cerous nitrate is dissolved in the water, mix;
2) slowly add again γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane to mix;
3) then add diethylenetriamine to mix;
4) add again potassium permanganate to mix;
5) finally slowly add water, reach reference volume, mix the preparation that completes hole sealing agent.
The application of electric arc spraying fine aluminium coating sealing reagent,
By the parts washing with electric arc spraying fine aluminium coating, selecting the temperature of water is 30～45 ℃, then the moisture on removing component surface;
Then by immersion way, the parts with electric arc spraying fine aluminium coating are immersed in the solution of described hole sealing agent, and make described parts surface be uniformly distributed hole sealing agent; Selecting hole sealing agent soaking solution temperature is 50～70 ℃, and the time is 2～4min;
Electric arc spraying fine aluminium coating, after above hole sealing agent immersion treatment, is dried 15-20min, and bake out temperature is 80-90 ℃.
The temperature of described water is 40 ℃.
Described soaking solution temperature is 60 ℃.
The described soaking solution time is 3min.
Described drying time is 17min.
Described bake out temperature is 85 ℃.
In the present invention, adopt cerous nitrate, it can, at thermospray metallic coating Surface Creation rare-earth oxidation film, stop transfer and the transmission between the solution of metallic surface of electronics and oxygen, thereby play erosion-resisting effect effectively.
γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane, is combined with cerous nitrate, and the rete that surface forms carries out sealing of hole to thermospray metallic coating more uniformly and effectively, has more effectively suppressed coating corrosion speed.Cerium can reduce to a greater degree cathodic current and improve impedance.
Potassium permanganate is the oxygenant being used in conjunction with, coordinated by potassium permanganate is used, the film generating in the reaction of metal spraying coatingsurface, be combined with coated substrate firmly and have a microvoid structure, there is good absorption property, in conjunction with diethylenetriamine, use, filled microvoid structure, on surface, form one deck and there is stronger chemical rete.Adding potassium permanganate can increase the oxidisability of sealing of hole liquid, is conducive to the formation of accelerated oxidation film.The erosion resistance of the more enough very big raising oxide films of synergistic effect that this combination diethylenetriamine is obtained and with the bonding force of matrix, the chemical rete that makes sealing of hole is even compact more, plays better anticorrosion ability.
Performance Ratio is:
According to ISO 9227-2006 salt-fog test standard, carry out neutral salt spray test and occur the white rust time
| Sealing of hole is not processed sample | Example 1 | Example 2 | Example 3 | Example 4 |
| 6 hours | 33 hours | 37 hours | 34 hours | 35 hours |
The invention has the beneficial effects as follows, the needs that the corrosion resisting property of arc spraying coating improved in order to meet Industrial materials, the present invention proposes the rotten hole sealing agent of high resistance and the hole-sealing technology of specialized application and electric arc spraying fine aluminium coating, electric arc spraying fine aluminium coating is carried out to sealing of hole processing, sealing of hole is processed rear electric arc spraying fine aluminium coatingsurface reaction and can be formed in conjunction with good chemical oxide film, can significantly reduce the porosity of electric arc spraying fine aluminium coating, effectively improve the corrosion resistance of electric arc spraying fine aluminium coating, after traditional inorganic and organic sealing agent processing of the electric arc spraying fine aluminium coating of processing through electric arc spraying fine aluminium coating sealing reagent of the present invention and treatment process and traditional physical shielding effect, relatively there is better resistance to corrosion, and hole sealing agent is environment friendly and pollution-free.
The present invention proposes, with electric arc spraying fine aluminium coating sealing reagent, electric arc spraying fine aluminium coating is carried out to sealing of hole processing, to form fine and close chemical oxide film at electric arc spraying fine aluminium coatingsurface.In the present invention, the processing of the sealing of hole of electric arc spraying fine aluminium coating sealing reagent is that application hole sealing agent can enter the hole between electric arc spraying fine aluminium coating and effective combination and reactivity occur with it, the electric arc spraying fine aluminium coating hole that its coating exists after sealing of hole is processed is filled up by the film substrate that is generated, and form in conjunction with good oxide film at electric arc spraying fine aluminium coatingsurface, thereby reduce significantly the porosity of electric arc spraying fine aluminium coating, electric arc spraying fine aluminium coating resistance to corrosion is obviously strengthened.
Electric arc spraying fine aluminium coating is after the rotten hole sealing agent sealing of hole of high resistance of the present invention is processed, at coatingsurface, formed in conjunction with good oxide film, the hole sealing agent of the conventional physical of comparing shield type, sealing of hole better effects if, resistance to corrosion obviously strengthens, sealing of hole is processed conductivity and the outward appearance that does not affect electric arc spraying fine aluminium coating, meet the requirements of current aftertreatment technology to electric arc spraying fine aluminium coating resistance to corrosion, working efficiency of the present invention is high simultaneously, treatment time is short, technique is simple, environment friendly and pollution-free, is applicable to suitability for industrialized production completely.
Accompanying drawing explanation
Fig. 1 is the present invention's application schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1:
The rotten electric arc spraying fine aluminium of a high resistance coating sealing reagent, the 1 liter of described hole sealing agent of take is benchmark, comprises following component, cerous nitrate 16 grams per liters, γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane 8 grams per liters, 20 milliliters/liter of diethylenetriamines, potassium permanganate 3 grams per liters, surplus is water.
This hole sealing agent is prepared according to the following steps:
1) cerous nitrate is joined in 100ml water, mix;
2) slowly add again γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane to mix;
3) then add diethylenetriamine to mix;
4) add again potassium permanganate to mix;
5) finally slowly add water, reach reference volume, mix the preparation that completes hole sealing agent.
As shown in Figure 1, the application of electric arc spraying fine aluminium coating sealing reagent,
By the parts washing with electric arc spraying fine aluminium coating, selecting the temperature of water is 30 ℃, then the moisture on removing component surface;
Then by immersion way, the parts with electric arc spraying fine aluminium coating are immersed in the solution of described hole sealing agent, and make described parts surface be uniformly distributed hole sealing agent; Selecting hole sealing agent soaking solution temperature is 50 ℃, and the time is 2 min;
Electric arc spraying fine aluminium coating, after above hole sealing agent immersion treatment, is dried 15min, and bake out temperature is 80 ℃.
Embodiment 2:
The rotten electric arc spraying fine aluminium of a high resistance coating sealing reagent, the 1 liter of described hole sealing agent of take is benchmark, comprises following component, cerous nitrate 14 grams per liters, γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane 6 grams per liters, 16 milliliters/liter of diethylenetriamines, potassium permanganate 2 grams per liters, surplus is water.
This hole sealing agent is prepared according to the following steps:
1) cerous nitrate is joined in 100ml water, mix;
2) slowly add again γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane to mix;
3) then add diethylenetriamine to mix;
4) add again potassium permanganate to mix;
5) finally slowly add water, reach reference volume, mix the preparation that completes hole sealing agent.
As shown in Figure 1, the application of electric arc spraying fine aluminium coating sealing reagent,
By the parts washing with electric arc spraying fine aluminium coating, selecting the temperature of water is 40 ℃, then the moisture on removing component surface;
Then by immersion way, the parts with electric arc spraying fine aluminium coating are immersed in the solution of described hole sealing agent, and make described parts surface be uniformly distributed hole sealing agent; Selecting hole sealing agent soaking solution temperature is 60 ℃, and the time is 3min;
Electric arc spraying fine aluminium coating, after above hole sealing agent immersion treatment, is dried 17min, and bake out temperature is 85 ℃.
Embodiment 3:
The rotten electric arc spraying fine aluminium of a high resistance coating sealing reagent, the 1 liter of described hole sealing agent of take is benchmark, comprises following component, cerous nitrate 21 grams per liters, γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane 9 grams per liters, 20 milliliters/liter of diethylenetriamines, potassium permanganate 4 grams per liters, surplus is water.
This hole sealing agent is prepared according to the following steps:
1) cerous nitrate is joined in 100ml water, mix;
2) slowly add again γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane to mix;
3) then add diethylenetriamine to mix;
4) add again potassium permanganate to mix;
5) finally slowly add water, reach reference volume, mix the preparation that completes hole sealing agent.
As shown in Figure 1, the application of electric arc spraying fine aluminium coating sealing reagent,
By the parts washing with electric arc spraying fine aluminium coating, selecting the temperature of water is 45 ℃, then the moisture on removing component surface;
Then by immersion way, the parts with electric arc spraying fine aluminium coating are immersed in the solution of described hole sealing agent, and make described parts surface be uniformly distributed hole sealing agent; Selecting hole sealing agent soaking solution temperature is 70 ℃, and the time is 4min;
Electric arc spraying fine aluminium coating, after above hole sealing agent immersion treatment, is dried 20min, and bake out temperature is 90 ℃.
Embodiment 4: the rotten electric arc spraying fine aluminium of a kind of high resistance coating sealing reagent, the 1 liter of described hole sealing agent of take is benchmark, comprise following component, cerous nitrate 18 grams per liters, γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane 7 grams per liters, 16 milliliters/liter of diethylenetriamines, potassium permanganate 3 grams per liters, surplus is water.
This hole sealing agent is prepared according to the following steps:
1) cerous nitrate is joined in 100ml water, mix;
2) slowly add again γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane to mix;
3) then add diethylenetriamine to mix;
4) add again potassium permanganate to mix;
5) finally slowly add water, reach reference volume, mix the preparation that completes hole sealing agent.
As shown in Figure 1, the application of electric arc spraying fine aluminium coating sealing reagent,
By the parts washing with electric arc spraying fine aluminium coating, selecting the temperature of water is 30 ℃, then the moisture on removing component surface;
Then by immersion way, the parts with electric arc spraying fine aluminium coating are immersed in the solution of described hole sealing agent, and make described parts surface be uniformly distributed hole sealing agent; Selecting hole sealing agent soaking solution temperature is 70 ℃, and the time is 3min;
Electric arc spraying fine aluminium coating, after above hole sealing agent immersion treatment, is dried 18min, and bake out temperature is 87 ℃.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (8)
1. the rotten electric arc spraying fine aluminium of high resistance coating sealing reagent, it is characterized in that, the 1 liter of described hole sealing agent of take is benchmark, comprise following component, cerous nitrate 14-21 grams per liter, γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane 6-9 grams per liter, diethylenetriamine 16-20 milliliter/liter, potassium permanganate 2-4 grams per liter, surplus is water.
2. the preparation method of hole sealing agent as claimed in claim 1, is characterized in that, according to the following steps preparation:
1) cerous nitrate is joined in 100ml water, mix;
2) slowly add again γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane to mix;
3) then add diethylenetriamine to mix;
4) add again potassium permanganate to mix;
5) finally slowly add water, reach reference volume, mix the preparation that completes hole sealing agent.
3. hole sealing agent, for the application of electric arc spraying fine aluminium coating, is characterized in that as claimed in claim 1,
By the parts washing with electric arc spraying fine aluminium coating, selecting the temperature of water is 30～45 ℃, then the moisture on removing component surface;
Then by immersion way, the parts with electric arc spraying fine aluminium coating are immersed in the solution of described hole sealing agent, and make described parts surface be uniformly distributed hole sealing agent; Selecting hole sealing agent soaking solution temperature is 50～70 ℃, and the time is 2～4min;
Electric arc spraying fine aluminium coating, after above hole sealing agent immersion treatment, is dried 15-20min, and bake out temperature is 80-90 ℃.
4. application as claimed in claim 3, is characterized in that, the temperature of described water is 40 ℃.
5. application as claimed in claim 3, is characterized in that, described soaking solution temperature is 60 ℃.
6. application as claimed in claim 3, is characterized in that, the described soaking solution time is 3min.
7. application as claimed in claim 3, is characterized in that, described drying time is 17min.
8. application as claimed in claim 3, is characterized in that, described bake out temperature is 85 ℃.
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| CN201310187131.0A CN103243290B (en) | 2013-05-20 | 2013-05-20 | Electric arc spraying pure aluminium coating sealant with high corrosion resistance, preparation process and application of sealant |
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| CN104804614A (en) * | 2015-04-22 | 2015-07-29 | 苏州统明机械有限公司 | Corrosion resistant thermal spraying hole sealing agent and application method thereof |
| CN105331963A (en) * | 2015-09-29 | 2016-02-17 | 安徽瑞林汽配有限公司 | Aluminum alloy curing and lubricating film and preparation method thereof |
| CN112941381B (en) * | 2021-01-29 | 2023-03-28 | 宁波精达五金制造有限公司 | High-strength corrosion-resistant cartridge case and preparation method thereof |
| CN113072826A (en) * | 2021-04-25 | 2021-07-06 | 马鞍山钢铁股份有限公司 | High-temperature-resistant hole sealing agent for hot-dip-coating sink roller, preparation method and coating method |
| CN114921124B (en) * | 2022-07-19 | 2022-10-25 | 矿冶科技集团有限公司 | Acid corrosion resistant hole sealing agent for thermal spraying coating, preparation method thereof and hole sealing method |
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| EP0853135A4 (en) * | 1996-05-24 | 2000-10-25 | Nippon Steel Hardfacing | Method of strengthening sprayed coating |
| CN100577869C (en) * | 2007-10-17 | 2010-01-06 | 陈东初 | Transformation liquid for preparation of corrosion-resistant oxidation film on aluminium alloy surface and method of use thereof |
| CN102409325B (en) * | 2011-12-06 | 2014-06-11 | 中国科学院金属研究所 | Environmentally-friendly corrosion-resistant chromium-free chemical conversion liquid and method for preparing chemical conversion film |
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