CN108277389A - Under low temperature galvanizing by dipping alloy is lost using low silicon content active steel surface corrosion-resistant - Google Patents
Under low temperature galvanizing by dipping alloy is lost using low silicon content active steel surface corrosion-resistant Download PDFInfo
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- CN108277389A CN108277389A CN201810418253.9A CN201810418253A CN108277389A CN 108277389 A CN108277389 A CN 108277389A CN 201810418253 A CN201810418253 A CN 201810418253A CN 108277389 A CN108277389 A CN 108277389A
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- galvanizing
- dipping
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- steel surface
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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
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- 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
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- 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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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention discloses low silicon content active steel surface corrosion-resistant erosion galvanizing by dipping alloy and its processing technology are used under low temperature.According to weight percent, the ingredient of the alloy is：Li：1.2‑1.5wt.%,Nb:0.5‑1.0wt.%,In:2.0‑3.0wt.%,Co：1.5 2.0wt.%, Sc:1.0‑1.8wt.%,Sm:0.5 0.8wt.%, surplus are zinc.The development of the galvanizing by dipping alloy will solve the problems, such as silicon content in the application of 0.5 0.8wt.% active steel hot-dip galvanizing techniques, gained zinc coat not only has the mechanical property of common nonactive steel surface zinc coat, the characteristics of also having production cost low, being convenient for large-scale production.
Description
Technical field
The present invention relates to technical field of alloy, specifically, being related to a kind of kirsite.
Background technology
Steel possesses the advantages that good intensity, mouldability, production economy and recuperability, in the process of construction of industry
In, it plays a very important role.But steel is easy to react with environment, generates stable oxide or salt.Steel
The corrosion service life of steel, had brought tremendous economic losses to the mankind, and have seriously polluted the environment, therefore
People take various guard technologies to improve the antiseptic property of steel.
Since the standard electrode potential of zinc is defeated by iron, zinc coat has galvanic anode protection in water and wet air
The effect for protecting base steel, 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 within the scope of boundary, accounts for about 30% or so of zinc yield in China.
Galvanizing by dipping is to delay one of most effective means of steel material environmental corrosion, it is surface is cleaned, activation
Steel product afterwards is dipped in the zinc liquid of melting, by the reaction and diffusion between iron zinc, is adhered in steel product coating surface
The good zn alloy coating of property.Compared with other metal protection methods, physical barriers and electrification of the hot-dip galvanizing technique in coating
It learns in the protection feature that is combined of protection, in the bond strength of coating and matrix, the compactness of coating, durability, maintenance-free
In adaptability with economy and its to article shape and size, there is unrivaled advantage.Hot dip galvanized product master at present
There are steel plate, steel band, steel wire, steel pipe etc., wherein hot-dip galvanized steel sheet proportion maximum.For a long time, hot-dip galvanizing technique
Because of its cheap plating cost, excellent protection feature and beautiful appearance and the favor for receiving people, be widely used in automobile,
The fields such as building, household electrical appliances, chemical industry, machinery, oil, metallurgy, light industry, traffic, electric power, aviation and ocean engineering.
The quality of galvanizing is related with many factors, includes the chemical composition of steel part, the alloying component of zinc bath, zinc-plated temperature
Degree, operating procedure etc..For the chemical composition of steel part, influence of the silicon content to zinc coat in steel is maximum.In general, working as
When silicon content in steel is more than 0.3wt.%, zinc coat significantly thickens and surface is gloomy, and poor adhesion, zinc coating quality significantly drops
Low this kind of steel of is known as active steel the galvanizing industry more.
In order to solve the problems, such as the zinc coating quality of active steel, develop a variety of galvanizing techniques, such as sealer galvannealing,
Zinc-plated side of high temperature etc..But it needs periodically to supplement admiro into zinc bath using these methods, and cadmia in zinc bath can be made to increase,
In addition the technology is only effective less than 0.25% active steel to silicon content.When silicone content higher（Such as 0.5-0.8wt.%）, this
A little methods are just inevitably affected by various factors.In recent years, the Galvanco that Belgium and Canada Company propose
Alloy can comprehensively solve activity galvanizing steel problem, and applied in some European countries, but the cost of alloy is very high, and
The tendency for enabling plating piece deformation even cracking is serious, waits to be further improved.In addition, also having using first in active steel surface formation one
Then layer barrier layer carries out galvanizing to reduce or delay influence of the silicon to zinc coat in steel.But chemically coated nickel method need to be in higher temperatures
Degree is lower to carry out, and plating solution maintenance is more difficult.
This patent provides a kind of low-temperature energy-saving active steel resistance to oxidation galvanizing by dipping kirsite.By controlling lithium
Content simultaneously adds trace element simultaneously, and the formation and roughening of alloy phase are harmful to greatly improve active steel in galvanizing by dipping, and
The mechanical property of existing dip galvanized is maintained simultaneously.It is contemplated that the industrialization of such alloy can obtain great economy
And social benefit.In the near future, as more engineer application fields are expanded, such novel alloy will be in more hot dippings
It is used widely in zinc-plated.
Invention content
The purpose of the present invention is to overcome the deficiency in the prior art, and providing one kind can make under 360-450 degree atmospheric conditions
In a low temperature of galvanizing by dipping alloy is lost using low silicon content active steel surface corrosion-resistant.The alloy is in this temperature range to activity
When steel carries out galvanizing by dipping, gained zinc coat not only has the mechanical property of common nonactive steel surface zinc coat, and this method is also
It is low with production cost, the characteristics of being convenient for mass producing.
To achieve the goals above, the present invention adopts the following technical scheme that：
Low silicon content active steel surface corrosion-resistant is used to lose galvanizing by dipping alloy under a kind of low temperature.By weight percentage, alloy
Group become：Li： 1.2-1.5wt.%,Nb:0.5-1.0wt.% ,In:2.0-3.0wt.%,Co：1.5-2.0wt.%, Sc:
1.0-1.8wt.%, Sm:0.5-0.8wt.%, surplus are zinc.The kirsite is in fusion process because volatilization and formation clinker etc. are former
Thus the weight of loss is in 1.0-2.0wt.% or so.
Using the preparation method of low silicon content active steel surface corrosion-resistant erosion galvanizing by dipping alloy under above-mentioned low temperature, including such as
Lower step：As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses silicon carbide crucible；Sensing heating arrives
500-600 degree forms alloy solution, and is sufficiently stirred 10 minutes or so using electromagnetic agitation effect；By alloy liquid in 500-
600 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
It is 5-10m/min to move down speed.The ingot casting can handle next pair as galvanizing by dipping raw material for the galvanizing by dipping of subsequent handling
Steel wire carries out protection operation, and the wherein operating temperature of galvanizing by dipping is 360-450 degree, and the hot dipping time is 30-40 seconds.
Compared with prior art, the present invention has the advantages that：
（1）Patent of the present invention is provided for the bad present situation of the final coating performance of current active steel galvanizing by dipping kirsite
A kind of novel materialogy solution.The kirsite has extremely excellent resistance to volatilization and oxidation resistent susceptibility, can reach
5 hours are stood without significantly aoxidizing under atmospheric environment in 400-800 degree temperature range.It is carried out to the liquid alloy
During the melt treatments such as stirring, air blowing, after its skin covering of the surface is destroyed because being vigorously stirred, energy rapid regeneration successfully hinders to close
The oxidation and volatilization of gold.
（2）Hot-galvanized steel structural member standard provides that the galvanized layer thickness of galvanized part need to ensure at 30-60 microns, to ensure
The corrosion resistance of plating piece and good adhesiveness.In addition, the operating temperature of general galvanizing by dipping is 450-580 degree, galvanizing by dipping
Time is 30-60 seconds.Zinc-plated using this patent uses alloy, under the low temperature environment of 360-450 degree, so that it may at 30-40 seconds
Inherence active steel surface hot-dip on thickness be 50-80 microns of coating.Since operating temperature is low, the hot dipping time is short, energy saving
It is with obvious effects.Convenient for operation, year consuming fund is also less, for the prefered method in galvanizing by dipping production.
（3）For silicone content in the dip galvanized of the active steel surface of 0.5-0.8wt.%, gained tissue topography and non-live
Property steel zinc-plated layer tissue it is identical, be continuous fine and close lamellar tissue.In comparison, using common galvanized alloy in active steel
Surface heat zinc immersion layer growth failure, and internal layer is broken into bulk, in the shape that bursts out to outgrowth.The product also has excellent resistance to
Corrosive nature.Under marine environment, the corrosion rate of the material is 3.2 × 10-4Mm/.Thus under marine climate, the material
It can use safely 30 years or more and occur without apparent corrosion phenomenon.In comparison, the plating of common hot-dip galvanizing alloy
Zinc layers general working life under marine environment is 20 years or so.
Specific implementation mode
Embodiment 1
One kind losing galvanizing by dipping alloy in the case where 360-450 degree is using low temperature using low silicon content active steel surface corrosion-resistant.By weight
Percentages are measured, the chemical composition of alloy is：Li： 1.2wt.%,Nb:0.5wt.% ,In:2.4wt.%,Co：1.5wt.%, Sc:
1.2wt.%, Sm:0.5wt.%, surplus are zinc.The preparation method of alloy：As above the raw material matched is added to atmosphere protection
In electric induction furnace, and use silicon carbide crucible；Sensing heating forms alloy solution to 500-600 degree, and is imitated using electromagnetic agitation
It should be sufficiently stirred 10 minutes or so；Alloy liquid is cast to heat top same level after ten minutes in 500-600 degree heat preservation standing to set
At required billet, it is 5-10m/min that ingot casting, which moves down speed, for standby interior progress semi-continuous casting.The ingot casting can regard hot-dip
Zinc raw material handles to carry out protection operation to steel wire for the galvanizing by dipping of subsequent handling, and the operating temperature of wherein galvanizing by dipping is
360-450 degree, hot dipping time are 30-40 seconds.
The operating temperature of general galvanizing by dipping is 450-580 degree, and the galvanizing by dipping time is 30-60 seconds.Using this patent
It is zinc-plated to use alloy, under the low temperature environment of 360-450 degree, so that it may in the interior thickness in the hot-dip of active steel surface of 30-40 seconds
The coating that degree is 50-80 microns.Since operating temperature is low, the hot dipping time is short, and energy-saving effect is apparent.Convenient for operation, year is consumed
Take that fund is also less, for the prefered method in galvanizing by dipping production.For silicone content 0.5-0.8wt.% active steel surface
The zinc-plated layer tissue of dip galvanized, gained tissue topography and nonactive steel is identical, is continuous fine and close lamellar tissue.It compares
For, using common galvanized alloy in active steel surface heat zinc immersion layer growth failure, and internal layer is broken into bulk, in the shape that bursts out
To outgrowth.Under marine environment, the corrosion rate of the material is 3.2 × 10-4Mm/.Thus under marine climate, the material
It can use safely 30 years or more and occur without apparent corrosion phenomenon.In comparison, the plating of common hot-dip galvanizing alloy
Zinc layers general working life under marine environment is 20 years or so.
Embodiment 2
One kind losing galvanizing by dipping alloy in the case where 360-450 degree is using low temperature using low silicon content active steel surface corrosion-resistant.By weight
Percentages are measured, the chemical composition of alloy is：Li： 1.4wt.%,Nb:0.8wt.% ,In:2.5wt.%,Co：1.8wt.%, Sc:
1.6wt.%, Sm:0.6wt.%, surplus are zinc.The preparation method of alloy：As above the raw material matched is added to atmosphere protection
In electric induction furnace, and use silicon carbide crucible；Sensing heating forms alloy solution to 500-600 degree, and is imitated using electromagnetic agitation
It should be sufficiently stirred 10 minutes or so；Alloy liquid is cast to heat top same level after ten minutes in 500-600 degree heat preservation standing to set
At required billet, it is 5-10m/min that ingot casting, which moves down speed, for standby interior progress semi-continuous casting.The ingot casting can regard hot-dip
Zinc raw material handles to carry out protection operation to steel wire for the galvanizing by dipping of subsequent handling, and the operating temperature of wherein galvanizing by dipping is
360-450 degree, hot dipping time are 30-40 seconds.
The operating temperature of general galvanizing by dipping is 450-580 degree, and the galvanizing by dipping time is 30-60 seconds.Using this patent
It is zinc-plated to use alloy, under the low temperature environment of 360-450 degree, so that it may in the interior thickness in the hot-dip of active steel surface of 30-40 seconds
The coating that degree is 50-80 microns.Since operating temperature is low, the hot dipping time is short, and energy-saving effect is apparent.Convenient for operation, year is consumed
Take that fund is also less, for the prefered method in galvanizing by dipping production.For silicone content 0.5-0.8wt.% active steel surface
The zinc-plated layer tissue of dip galvanized, gained tissue topography and nonactive steel is identical, is continuous fine and close lamellar tissue.It compares
For, using common galvanized alloy in active steel surface heat zinc immersion layer growth failure, and internal layer is broken into bulk, in the shape that bursts out
To outgrowth.Under marine environment, the corrosion rate of the material is 3.2 × 10-4Mm/.Thus under marine climate, the material
It can use safely 30 years or more and occur without apparent corrosion phenomenon.In comparison, the plating of common hot-dip galvanizing alloy
Zinc layers general working life under marine environment is 20 years or so.
Embodiment 3
One kind losing galvanizing by dipping alloy in the case where 360-450 degree is using low temperature using low silicon content active steel surface corrosion-resistant.By weight
Percentages are measured, the chemical composition of alloy is：Li： 1.5wt.%,Nb:0.9wt.% ,In:2.5wt.%,Co：1.8wt.%, Sc:
1.6wt.%, Sm:0.6wt.%, surplus are zinc.The preparation method of alloy：As above the raw material matched is added to atmosphere protection
In electric induction furnace, and use silicon carbide crucible；Sensing heating forms alloy solution to 500-600 degree, and is imitated using electromagnetic agitation
It should be sufficiently stirred 10 minutes or so；Alloy liquid is cast to heat top same level after ten minutes in 500-600 degree heat preservation standing to set
At required billet, it is 5-10m/min that ingot casting, which moves down speed, for standby interior progress semi-continuous casting.The ingot casting can regard hot-dip
Zinc raw material handles to carry out protection operation to steel wire for the galvanizing by dipping of subsequent handling, and the operating temperature of wherein galvanizing by dipping is
360-450 degree, hot dipping time are 30-40 seconds.
The operating temperature of general galvanizing by dipping is 450-580 degree, and the galvanizing by dipping time is 30-60 seconds.Using this patent
It is zinc-plated to use alloy, under the low temperature environment of 360-450 degree, so that it may in the interior thickness in the hot-dip of active steel surface of 30-40 seconds
The coating that degree is 50-80 microns.Since operating temperature is low, the hot dipping time is short, and energy-saving effect is apparent.Convenient for operation, year is consumed
Take that fund is also less, for the prefered method in galvanizing by dipping production.For silicone content 0.5-0.8wt.% active steel surface
The zinc-plated layer tissue of dip galvanized, gained tissue topography and nonactive steel is identical, is continuous fine and close lamellar tissue.It compares
For, using common galvanized alloy in active steel surface heat zinc immersion layer growth failure, and internal layer is broken into bulk, in the shape that bursts out
To outgrowth.Under marine environment, the corrosion rate of the material is 3.2 × 10-4Mm/.Thus under marine climate, the material
It can use safely 30 years or more and occur without apparent corrosion phenomenon.In comparison, the plating of common hot-dip galvanizing alloy
Zinc layers general working life under marine environment is 20 years or so.
Claims (3)
1. losing galvanizing by dipping alloy using low silicon content active steel surface corrosion-resistant under a kind of low temperature；It, should according to weight percent
The ingredient of alloy is：Li： 1.2-1.5wt.%,Nb:0.5-1.0wt.% ,In:2.0-3.0wt.%,Co：1.5-2.0wt.%,
Sc:1.0-1.8wt.%, Sm:0.5-0.8wt.%, surplus are zinc.
2. galvanizing by dipping alloy is lost using low silicon content active steel surface corrosion-resistant under low temperature according to claim 1, it is special
Sign is to include the following steps：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 to 500-600 degree, and is sufficiently stirred 10 minutes or so using electromagnetic agitation effect；It will close
Golden liquid stands to be cast to after ten minutes in the same level equipment of heat top in the heat preservation of 500-600 degree carries out semi-continuous casting at required
Billet, ingot casting move down speed be 5-10m/min.
3. galvanizing by dipping alloy is lost using low silicon content active steel surface corrosion-resistant under low temperature according to claim 1, it is special
Sign is to include following procedure of processing：The ingot casting can be handled as galvanizing by dipping raw material for the galvanizing by dipping of subsequent handling
Protection operation is carried out to steel wire, the wherein operating temperature of galvanizing by dipping is 360-450 degree, and the hot dipping time is 30-40 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810418253.9A CN108277389A (en) | 2018-05-04 | 2018-05-04 | Under low temperature galvanizing by dipping alloy is lost using low silicon content active steel surface corrosion-resistant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810418253.9A CN108277389A (en) | 2018-05-04 | 2018-05-04 | Under low temperature galvanizing by dipping alloy is lost using low silicon content active steel surface corrosion-resistant |
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| Publication Number | Publication Date |
|---|---|
| CN108277389A true CN108277389A (en) | 2018-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810418253.9A Withdrawn CN108277389A (en) | 2018-05-04 | 2018-05-04 | Under low temperature galvanizing by dipping alloy is lost using low silicon content active steel surface corrosion-resistant |
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- 2018-05-04 CN CN201810418253.9A patent/CN108277389A/en not_active Withdrawn
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Application publication date: 20180713 |