CN108220686A - Aluminium galvanizing by dipping elimination white point and the blackspot kirsite containing Ru and Bi - Google Patents
Aluminium galvanizing by dipping elimination white point and the blackspot kirsite containing Ru and Bi Download PDFInfo
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- CN108220686A CN108220686A CN201810363782.3A CN201810363782A CN108220686A CN 108220686 A CN108220686 A CN 108220686A CN 201810363782 A CN201810363782 A CN 201810363782A CN 108220686 A CN108220686 A CN 108220686A
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- dipping
- galvanizing
- blackspot
- aluminium
- zinc
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C18/00—Alloys based on zinc
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating With Molten Metal (AREA)
Abstract
Contain Ru and Bi kirsites and its processing technology with elimination white point and blackspot the invention discloses aluminium galvanizing by dipping.According to weight percent, the ingredient of the alloy is：Ba:0.4‑0.8wt.%,Ru:0.3‑0.5wt.%,Bi:1.2‑2.0wt.%,Ge：0.8 2.0wt.%, Mn:1.0‑2.0wt.%,Co:1.0 2.0wt.%, surplus are zinc.The present invention helps to develop high quality heat zinc immersion kirsite, can obtain nothing
Description
Technical field
The present invention relates to technical field of alloy, specifically, being related to a kind of kirsite.
Background technology
As is well known, every field of the etching problem of metal material in national economy and people's lives.Corrode to
The mankind have brought tremendous economic losses and endanger.According to incompletely statistics, the metal that the whole world is lost due to corrosion every year is up to
2.3 hundred million tons, this number accounts for about 30% or so of current year output of steel.According to the statistics of developed country, the economic loss caused by corrosion
Account for about the 1-5% of current year gross national product.The metal erosion problem in China is also quite serious, every year the warp caused by corrosion
Ji loss accounts for about the 4% of national economy total output value, and the indirect loss brought by corrosion is even more to be difficult to estimate.For a long time, people
Seeking various methods always and reduce the harm of corrosion.Since corrosion begins with metal surface, so using Surface Engineering skill
Art, which carries out surface modification, has become one of most active Disciplinary Frontiers of material science.
Since the standard electrode potential of zinc is defeated by iron, zinc coat has galvanic anode protection in water and wet air
The effect of base steel is protected, so as to greatly extend the service life of steel.Industrially common zinc coat have galvanizing by dipping,
Electrogalvanizing, mechanical zinc-plating and thermal spraying（Plating）Zinc etc., wherein galvanizing account for about the 95% of zinc-plated total amount, and galvanizing is alive with zinc amount
The 40% of zinc yield is accounted in the range of boundary, accounts for about 30% or so of zinc yield in China.
With the development of industry, the advantages of hot dip zinc product has applied to many fields, galvanizing is the anti-corrosion time limit
For a long time, it is always the method for anticorrosion treatment being popular extensively to adapt to environment.Be widely used with electric power tower, communication iron tower,
Railway, highway protection, light pole, component peculiar to vessel, construction steel structure component, substation's affiliated facility, light industry etc..Galvanizing
The anti-corrosion time limit is remote, but the anti-corrosion time limit is different in different environment：13 years, heavy industrial district, ocean 50 years, countryside 104
Year, city 30 years.
The advantages of galvanizing:1) processing cost is low：The expense of galvanizing by dipping antirust is than the expense of other paint vehicle coatings
It is low；2) durable：Under suburban environment, the galvanizing antirust thickness of standard can keep 30 years or more without repairing；In city
Area or greater coasting area, the galvanizing antirust coat of standard can then keep 20 years without repairing；3) good reliability：Zinc coat and steel
It is metallurgical binding between material, becomes some of steel surface, therefore the persistence of coating is more reliable；4) toughness of coating is strong：Plating
Zinc layers form a kind of special metallurgical structure, and this structure can bear mechanically damaged in transport and use；5) it is comprehensive
Protection：The each section of plating piece can plate zinc, even if can be protected in recess, wedge angle and covert comprehensively；6) it saves
Shi Shengli：Galvanizing process is more faster than other coating construction methods, and can avoid installation after on-site brush needed for
Time.
The aluminium scrapped due to corrosion every year in the world accounts for 1/3rd of aluminium annual output, therefore, it is crucial to save aluminium
It is to solve aluminium etching problem.Galvanizing can form fine and close film in corrosive environment, and protection is all played to aluminum substrate and is made
With.After galvanizing, the service life of aluminium is obviously prolonged.In addition, if it is passivated processing in zinc-plated aluminium material surface, moreover it is possible to
The service life of zinc coat is improved, improves the lustrous surface of zinc coat, enhances the binding force of coating and matrix.
Current Domestic galvanizing by dipping field there are problems that, industry overall development greatly without strong, do not have also and
The ability that same industry developed country of the world contends with, mill run excess capacity, high-end product rely on import.Commercial scale reaches generation
Boundary is larger, and whole equipment and portion of techniques are close to or up to international most advanced level, and whole technology of equipping integrally falls behind, produces
Efficiency is low, and resources and energy consumption is big.Galvanizing by dipping development field falls behind, not only the underlying issue of heat treatment process, and also and
Industry upstream and downstream is closely bound up, and whole industry falls behind so that our galvanizing by dipping system sequence exploitation has an impact.
Although China's aluminium is smelted and processing has very big resources advantage, current most of aluminium does not use
It is effectively protected method.Therefore relatively it is difficult to guarantee in development cycle, designing quality and its processing quality for being realized etc. so that enterprise
Industry can not also obtain the breakthrough of bigger in market with keen competition.Develop aluminium with high quality heat zinc immersion kirsite for
China's independent research fine work new material is promoted, captures international fine work new material market with facilitation.To conventional hot-dip zinc
The innovation and optimization of bottom property are carried out, there is positive meaning with being promoted to the development of entire galvanizing by dipping industry and its technology
Justice.
Invention content
The purpose of the present invention is to overcome the deficiency in the prior art, and providing one kind can make under 300-400 degree atmospheric conditions
Aluminium galvanizing by dipping elimination white point and the blackspot kirsite containing Ru and Bi.This method has and can inhibit in dip galvanized
'sThe formation of phase, so as to effectively eliminate the generation of white point and blackspot.It is additionally low with production cost, corrosion resistance
Can be strong, the characteristics of convenient for large-scale production.
To achieve these goals, the present invention adopts the following technical scheme that：
Aluminium galvanizing by dipping elimination white point and the blackspot kirsite containing Ru and Bi；According to weight percent, the ingredient of the alloy is：
Ba: 0.4-0.8wt.%,Ru:0.3-0.5wt.%,Bi:1.2-2.0wt.%,Ge：0.8-2.0wt.%, Mn:1.0-2.0wt.%,
Co:1.0-2.0wt.%, surplus are zinc.
The above-mentioned aluminium galvanizing by dipping preparation method for eliminating white point and the blackspot kirsite containing Ru and Bi, including walking as follows
Suddenly：As above the raw material matched is added in the electric induction furnace of atmosphere protection, and using silicon carbide crucible；Sensing heating is to 500-
600 degree are formed alloy solution, and are sufficiently stirred 10 minutes or so using electromagnetic agitation effect；By alloy liquid in 500-600 degree
Heat preservation, which stands to be cast to after ten minutes in the same level equipment of heat top, carries out semi-continuous casting into required billet, and ingot casting moves down speed
It spends for 10-20m/min.The ingot casting can regard the erosion shield processing that galvanizing by dipping carries out aluminium with kirsite；Wherein, it is hot
The operating temperature of zinc immersion is 300-400 degree, and the hot dipping time is 30-60 seconds.
Compared with prior art, the present invention has the advantages that：
（1）The kirsite of patent of the present invention has extremely low fusing point, and bath surface oxidation generation is fine and close after temperature is higher than 300 degree
Oxidation film and nitride film, effectively prevent zinc fume waving into air.The kirsite is in 300-600 temperature ranges in air
5 hours are stood under environment without significantly aoxidizing.The liquid zinc alloy is stirred, the melt treatments process such as blow
In, after its skin covering of the surface is destroyed because being vigorously stirred, energy rapid regeneration successfully hinders the oxidation and volatilization of alloy.
（2）There are close relationship in the thickness and quality and zinc liquid temperature of coating, immersion plating time.If zinc liquid temperature too it is low not only
Thickness of coating is smaller, and quality of coating is poor.If temperature is too high, it will causes the Fast Growth of alloy-layer, subsequent alloy-layer
It fuses into again in zinc liquid and sample thickness of coating is caused to decline, while increase the brittleness of coating.And rate of dissolution increase of aluminium etc.
Reason reduces the quality of zinc liquid.Immersion plating time too short zinc liquid and matrix are not sufficiently reactive, with the rising thickness of coating of time
Just gradually increase.But the alloy-layer of immersion plating time too long generation fuses into zinc liquid and sample thickness of coating is caused to decline again.These are complicated
Influence factor cause design galvanizing by dipping optimize technological parameter be not an easy thing.
（3）This patent propose optimization galvanizing by dipping operating condition be：The operating temperature of galvanizing by dipping is 300-400
Degree, hot dipping time are 30-60 seconds.And the operating temperature of common hot-dip galvanizing is 400-600 degree.Aluminium table prepared by the processing technology
Face dip galvanized has the advantages that coating is uniform, strong adhesive force, service life is long.Further, since hot dipping temperature drops significantly
It is low, thus effect is clearly for energy saving.
（4）Main problem present in galvanized steel plain sheet prepared by existing hot-dip galvanized material be zinc spend it is of poor quality, have it is white
Point and blackspot.By advanced multi-element alloyed method, carefully screening alloying element type and content can effectively inhibit
Evil phase (Phase) forming core and grow up.It is hereby achieved that nothingThe zinc coat of phase, white point and the blackspot of coating can obtain
It totally disappeared and remove.So as to substantially increase the presentation quality of coating and mechanical property.
Embodiment
Embodiment 1
Aluminium galvanizing by dipping elimination white point and the blackspot kirsite containing Ru and Bi.By weight percentage, the material chemistry into
It is divided into：Ba: 0.5wt.%,Ru:0.3wt.%,Bi:1.2wt.%,Ge：0.8wt.%, Mn:1.5wt.%,Co:1.8wt.%, surplus
For zinc.Preparation method：As above the raw material matched is added in the electric induction furnace of atmosphere protection, and using silicon carbide crucible；Sense
It should be heated to 550 degree and form alloy solution, and be sufficiently stirred 10 minutes or so using electromagnetic agitation effect；Alloy liquid is existed
550 degree of heat preservations, which stand to be cast to after ten minutes in the same level equipment of heat top, carries out semi-continuous casting into required billet, ingot casting
Speed is moved down as 14m/min.The ingot casting can regard the erosion shield processing that galvanizing by dipping carries out aluminium with kirsite；Hot dipping
Zinc-plated operating temperature is 300-400 degree, and the hot dipping time is 30-60 seconds.
This alloy has extremely low fusing point, the temperature oxidation film fine and close higher than bath surface oxidation generation after 300 degree with
Nitride film effectively prevents zinc fume waving into air.The kirsite is stood in 300-600 temperature ranges under atmospheric environment
5 hours are without significantly aoxidizing.During being stirred to the liquid zinc alloy, the melt treatments such as blowing, when its table
Facial mask because be vigorously stirred be destroyed after, can rapid regeneration, successfully hinder alloy oxidation and volatilization.The optimization hot dipping of the alloy
Zinc-plated operating condition is：The operating temperature of galvanizing by dipping is 300-400 degree, and the hot dipping time is 30-60 seconds.And common hot-dip galvanizing
Operating temperature be 400-600 degree.Aluminium surface dip galvanized prepared by the processing technology, strong adhesive force uniform with coating,
The advantages that service life is long.Further, since hot dipping temperature substantially reduces, thus effect is clearly for energy saving.It is existing
Hot-dip galvanized material prepare galvanized steel plain sheet present in main problem be zinc spend it is of poor quality, have white point and blackspot.By advanced
Multi-element alloyed method, carefully screen alloying element type and content can effectively inhibit harmful phase (Phase) forming core and
It grows up.It is hereby achieved that nothingThe zinc coat of phase, white point and the blackspot of coating can be completely eliminated.So as to greatly improve
The presentation quality and mechanical property of coating.
Embodiment 2
Aluminium galvanizing by dipping elimination white point and the blackspot kirsite containing Ru and Bi.By weight percentage, the material chemistry into
It is divided into：Ba: 0.6wt.%,Ru:0.4wt.%,Bi:1.5wt.%,Ge：1.0wt.%, Mn:1.8wt.%,Co:1.5wt.%, surplus
For zinc.Preparation method：As above the raw material matched is added in the electric induction furnace of atmosphere protection, and using silicon carbide crucible；Sense
It should be heated to 550 degree and form alloy solution, and be sufficiently stirred 10 minutes or so using electromagnetic agitation effect；Alloy liquid is existed
550 degree of heat preservations, which stand to be cast to after ten minutes in the same level equipment of heat top, carries out semi-continuous casting into required billet, ingot casting
Speed is moved down as 14m/min.The ingot casting can regard the erosion shield processing that galvanizing by dipping carries out aluminium with kirsite；Hot dipping
Zinc-plated operating temperature is 300-400 degree, and the hot dipping time is 30-60 seconds.
This alloy has extremely low fusing point, the temperature oxidation film fine and close higher than bath surface oxidation generation after 300 degree with
Nitride film effectively prevents zinc fume waving into air.The kirsite is stood in 300-600 temperature ranges under atmospheric environment
5 hours are without significantly aoxidizing.During being stirred to the liquid zinc alloy, the melt treatments such as blowing, when its table
Facial mask because be vigorously stirred be destroyed after, can rapid regeneration, successfully hinder alloy oxidation and volatilization.The optimization hot dipping of the alloy
Zinc-plated operating condition is：The operating temperature of galvanizing by dipping is 300-400 degree, and the hot dipping time is 30-60 seconds.And common hot-dip galvanizing
Operating temperature be 400-600 degree.Aluminium surface dip galvanized prepared by the processing technology, strong adhesive force uniform with coating,
The advantages that service life is long.Further, since hot dipping temperature substantially reduces, thus effect is clearly for energy saving.It is existing
Hot-dip galvanized material prepare galvanized steel plain sheet present in main problem be zinc spend it is of poor quality, have white point and blackspot.By advanced
Multi-element alloyed method, carefully screen alloying element type and content can effectively inhibit harmful phase (Phase) forming core and
It grows up.It is hereby achieved that nothingThe zinc coat of phase, white point and the blackspot of coating can be completely eliminated.So as to greatly improve
The presentation quality and mechanical property of coating.
Embodiment 3
Aluminium galvanizing by dipping elimination white point and the blackspot kirsite containing Ru and Bi.By weight percentage, the material chemistry into
It is divided into：Ba: 0.4wt.%,Ru: 0.5wt.%,Bi: 2.0wt.%,Ge：2.0wt.%, Mn: 2.0wt.%,Co: 2.0wt.%,
Surplus is zinc.Preparation method：As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses silicon carbide earthenware
Crucible；Sensing heating forms alloy solution, and be sufficiently stirred 10 minutes or so using electromagnetic agitation effect to 550 degree；By aluminium alloy
Body stands to be cast to after ten minutes in the same level equipment of heat top in 550 degree of heat preservations carries out semi-continuous casting into required billet,
Ingot casting moves down speed as 14m/min.The ingot casting can regard the erosion shield processing that galvanizing by dipping carries out aluminium with kirsite；
The operating temperature of galvanizing by dipping is 300-400 degree, and the hot dipping time is 30-60 seconds.
This alloy has extremely low fusing point, the temperature oxidation film fine and close higher than bath surface oxidation generation after 300 degree with
Nitride film effectively prevents zinc fume waving into air.The kirsite is stood in 300-600 temperature ranges under atmospheric environment
5 hours are without significantly aoxidizing.During being stirred to the liquid zinc alloy, the melt treatments such as blowing, when its table
Facial mask because be vigorously stirred be destroyed after, can rapid regeneration, successfully hinder alloy oxidation and volatilization.The optimization hot dipping of the alloy
Zinc-plated operating condition is：The operating temperature of galvanizing by dipping is 300-400 degree, and the hot dipping time is 30-60 seconds.And common hot-dip galvanizing
Operating temperature be 400-600 degree.Aluminium surface dip galvanized prepared by the processing technology, strong adhesive force uniform with coating,
The advantages that service life is long.Further, since hot dipping temperature substantially reduces, thus effect is clearly for energy saving.It is existing
Hot-dip galvanized material prepare galvanized steel plain sheet present in main problem be zinc spend it is of poor quality, have white point and blackspot.By advanced
Multi-element alloyed method, carefully screen alloying element type and content can effectively inhibit harmful phase (Phase) forming core and
It grows up.It is hereby achieved that nothingThe zinc coat of phase, white point and the blackspot of coating can be completely eliminated.So as to greatly improve
The presentation quality and mechanical property of coating.
Claims (3)
1. aluminium galvanizing by dipping elimination white point and the blackspot kirsite containing Ru and Bi；According to weight percent, the ingredient of the alloy
For：Ba: 0.4-0.8wt.%,Ru:0.3-0.5wt.%,Bi:1.2-2.0wt.%,Ge：0.8-2.0wt.%, Mn:1.0-
2.0wt.%,Co:1.0-2.0wt.%, surplus are zinc.
2. aluminium galvanizing by dipping elimination white point and the blackspot kirsite containing Ru and Bi according to claim 1, it is characterised in that
Include the following steps：As above the raw material matched is added in the electric induction furnace of atmosphere protection, and using silicon carbide crucible；Sensing
It is heated to 500-600 degree and forms alloy solution, and be sufficiently stirred 10 minutes or so using electromagnetic agitation effect；Alloy liquid is existed
The heat preservation of 500-600 degree, which stands to be cast to after ten minutes in the same level equipment of heat top, carries out semi-continuous casting into required billet,
Ingot casting moves down speed as 10-20m/min.
3. aluminium galvanizing by dipping elimination white point and the blackspot kirsite containing Ru and Bi according to claim 1, it is characterised in that
Comprising step is used as described below：The ingot casting can regard the erosion shield processing that galvanizing by dipping carries out aluminium with kirsite；Wherein,
The operating temperature of galvanizing by dipping is 300-400 degree, and the hot dipping time is 30-60 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810363782.3A CN108220686A (en) | 2018-04-22 | 2018-04-22 | Aluminium galvanizing by dipping elimination white point and the blackspot kirsite containing Ru and Bi |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810363782.3A CN108220686A (en) | 2018-04-22 | 2018-04-22 | Aluminium galvanizing by dipping elimination white point and the blackspot kirsite containing Ru and Bi |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108220686A true CN108220686A (en) | 2018-06-29 |
Family
ID=62657697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810363782.3A Withdrawn CN108220686A (en) | 2018-04-22 | 2018-04-22 | Aluminium galvanizing by dipping elimination white point and the blackspot kirsite containing Ru and Bi |
Country Status (1)
| Country | Link |
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| CN (1) | CN108220686A (en) |
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2018
- 2018-04-22 CN CN201810363782.3A patent/CN108220686A/en not_active Withdrawn
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Application publication date: 20180629 |
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