CN108441702A - Isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy and its processing technology - Google Patents
Isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy and its processing technology Download PDFInfo
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- CN108441702A CN108441702A CN201810587668.9A CN201810587668A CN108441702A CN 108441702 A CN108441702 A CN 108441702A CN 201810587668 A CN201810587668 A CN 201810587668A CN 108441702 A CN108441702 A CN 108441702A
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- Prior art keywords
- alloy
- zinc
- dip
- anticollision
- reinforcing bar
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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
- C22C18/04—Alloys based on zinc with aluminium as the next major constituent
-
- 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
-
- 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
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
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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)
- Prevention Of Electric Corrosion (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention discloses isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy and its processing technologys.According to weight percent, the ingredient of the alloy is：Ca:0.2‑0.4wt.%,Li:0.1‑0.2wt.%,Co:0.4‑0.5wt.%,Al:30.0‑35.0wt.%,Sn:4.8‑5.2wt.%,Pr:0.1‑0.2wt.%,Sm:0.2 0.4wt.%, surplus are zinc.The exploitation and industrialization of the material reduce maintenance cost of highway, the product competitiveness for improving China's metallurgical industry is of great significance for solving Anticorrosion of the isolation railings for road under the environmental corrosion state of getting worse.
Description
Technical field
The present invention relates to technical field of alloy, specifically, being related to a kind of kirsite.
Background technology
Isolation railings for road is mainly used as the safety guard net of highway, highway.It has attractive and durable, indeformable, anti-
Corruption, anti-aging, anti-solarization, weather-proof, multi-size, lower-price characteristic.It is that humans and animals arbitrarily enter or cross in order to prevent
Expressway prevents the infrastructure for illegally occupying the generation of highway land phenomenon.Relatively common metal mold isolated gate packet
Include welded mesh, thorn steel mesh, mesh grid, expanded metal lath etc..
In highway engineering, the environment residing for segregator barriers belongs to natural environment.The etching problem of natural environment is not as good as industry
Environmental corrosion is so apparent.But in the serious area of environmental pollution, SO2, CO2, Cl-Equal corrosive substances content increases, ring
The corrosivity in border is very serious.
The structure design service life of segregator barriers is generally 20-30, however in the harsh environment of some corrosivity, due to
Lack necessary safeguard procedures, far from reaching expected service life.Many segregator barriers are also in default of necessary protection
Measure causes corrosion, fracture.
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.Its flow is：Degreasing-washing-pickling-helps plating-drying-galvanizing by dipping-separation-cooling passivation.
Galvanizing has lot of advantages: 1）Processing cost is low：The expense of galvanizing by dipping antirust is lower than the expense of other paint vehicle coatings；
2）Durable：Under suburban environment, the thickness of the galvanizing antirust of standard can keep repairing for a long time；In urban district or
Greater coasting area, the galvanizing antirust coat of standard can then keep repairing for many years；3）Good reliability：It is smelting between zinc coat and steel
Gold combines, and becomes a part for steel surface, therefore the persistence of coating is more reliable；4）The toughness of coating is strong：Coating process
A kind of special metallurgical structure, this structure can bear mechanically damaged in transport and use；5）Comprehensive protection：Plating piece
Each section can plate zinc, even if recess, wedge angle and covert can comprehensively by.
Grid technique is isolated in China using earliest in galvanizing by dipping, using also relatively universal, in addition to welded mesh, and other type of isolation
Grid mostly use greatly such preservative treatment mode.The production of traditional isolated gate column and mesh sheet is first to be cold worked into mesh sheet and column
Whole galvanizing by dipping is carried out except type mesh grid again, such technique energy consumption is high and galvanized layer thickness is difficult to control.In East Coastal
Some areas, people draw traditional handicraft experience, start use hot dip plated steel straight forming isolated gate component, such technique is not
Zinc consumption only can be largely reduced, reduces environmental pollution, and production cost is greatly saved, makes isolated gate manufacturing enterprise
More integrated development.Using the column of continuous hot galvanizing steel plate and steel belt molding, the zinc layers in commissure are fragile and influence
Antiseptic property, can be by commissure zinc supplementation or the methods of electrophoretic process is made up by whole table.
During highway construction, steel member due to its standardization level is high, from heavy and light, batch production manufacture, it is quick for installation,
The comprehensive advantages such as short construction period, anti-seismic performance are good, engineering economy is with the obvious advantage, non-environmental-pollution are used widely.But
It is that, with the deterioration of environmental pollution, the effect of environmental corrosion is more and more obvious.If not can solve isolation railings for road to exist
Anticorrosion under the environmental corrosion state of getting worse, will increase maintenance cost of highway, in some instances it may even be possible to lead to highway part base
Reducing or lacking ahead of time for this function, causes security risk.Isolation railings for road kirsite used for hot dip galvanizing and its processing technology are developed,
For accelerating China's metallurgical industry structural adjustment, improving estimation competitiveness will be of great significance.
Invention content
The purpose of the present invention is to overcome the deficiency in the prior art, and providing one kind can make under 420-480 degree atmospheric conditions
Isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy.
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy.By weight percentage, the group of alloy becomes：Ca:
0.2-0.4wt.%,Li:0.1-0.2wt.%,Co:0.4-0.5wt.%,Al:30.0-35.0wt.%,Sn:4.8-5.2wt.%,Pr:
0.1-0.2wt.%,Sm:0.2-0.4wt.%, 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.
The preparation method of above-mentioned isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy, includes the following steps：It will be as above
The raw material of proportioning is added in the electric induction furnace of argon gas protection, and uses silicon carbide crucible；As above the raw material matched is added to
In the electric induction furnace of atmosphere protection, and use silicon carbide crucible；Sensing heating forms alloy solution to 500-600 degree, and utilizes
Electromagnetic agitation effect is sufficiently stirred 10 minutes or so；Alloy liquid is stood in the heat preservation of 500-600 degree and is cast to heat after ten minutes
It pushes up and carries out semi-continuous casting in same level equipment into required billet, it is 5-8m/min that ingot casting, which moves down speed,.The ingot casting can be with
Thin plate galvanizing by dipping as galvanizing by dipping raw material for subsequent handling is handled, and wherein the operating temperature of galvanizing by dipping is 420-
480 degree, the hot dipping time is 30-60 seconds.
Compared with prior art, the present invention has the advantages that：
（1）As people’s lives level improves, private car is very universal, and traffic safety has become maximum on road kill
Hand, and guardrail is installed just into most practicable defence method.It is achieved in its tangible overwhelming majority of the installation of highway barrier
The reduction and resident trip degree safety of traffic accident incidence.Flexible safety fence refers to a kind of with larger buffer capacity
Toughness guard bar structure.This is a kind of structure being fixed on several cables for being applied with initial tension on pillar, it relies primarily on cable
The tensile stress of rope resists the impact absorption energy of vehicle, by the flexural deformation and stretching force of guardrail resists touching for vehicle
It hits.They all have certain rigidity and toughness, absorb crash energy by the deformation of crossbeam.Conventional hot-dip zinc layers can be strong
The stripping effect of strong vibration and impact so that the actual design service life of highway guard boom is well below normal projected life.
The highway guard boom anticollision allumen of present patent application protection can enhance hot-dip coated and matrix steel surface binding force,
Considerably increase the actual life of highway guard boom.
（2）Although the popularization of zinc aluminum alloy coating is later in highway isolated fence, the items of zinc aluminum alloy coating
Performance can meet or exceed dip galvanized, so the alloy layer is more suitable for corrosion resistance and requires high and be used continuously
Product.In addition, the alloy does not form brittle alloy phase layer, coating is better than dip galvanized adhesiveness so that plating piece deforms
Processing performance is better than common galvanizing plating piece.The alloy is used in galvanizing by dipping, and coating and matrix form alloy transition layer, right
The generation of alloying reaction layer has retardation.Thus boundary can be effectively prevented and cracked, reduce alloy-layer and matrix gold
Apparent gap existing for intersection between category so that the combination of alloy transition layer and parent metal is more closely.
（3）The corrosion potential of the alloy and dip galvanized are essentially identical, but its corrosion current is only traditional kirsite plating
The 0.2-0.3 of layer.The corrosion potential of the alloy layer and the corrosion potential of pure zinc are very nearly the same.The salt spray resistance of the alloy layer,
Resistance to sulfur dioxide and hot resistance test performance are better than dip galvanized, corrosion resistance there are clear superiority, using compared with
Thin zinc aluminum alloy coating can obtain identical even preferably anti-corrosion effect.This can not only be effectively reduced cost, and also be compliant with
The requirement of China's economic development energy-saving and emission-reduction.
（4）Thus in the environment of common highway, it can be used safely as highway guard boom coating using the material
Occur without apparent corrosion phenomenon within 40 years or more.In addition, the novel coating interior tissue is dense, it ensure that coating is each
The continuity of a region performance.In addition, gained coating can be subjected to plating of the large deformation of 40-50% without leading to galvanizing by dipping
Layer falls off.Thus in traffic loading increasingly increased today, can largely improve highway guard boom safety and
Actual life.
Specific implementation mode
Embodiment 1
One kind using isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy in 420-480 degree.By weight percentage, alloy
Chemical composition be：Ca:0.2wt.%,Li:0.1wt.%,Co:0.4wt.%,Al:30.0wt.%,Sn:4.8wt.%,Pr:
0.1wt.%,Sm:0.2wt.%, surplus are zinc.The preparation method of alloy：As above the raw material matched is added to the sense of argon gas protection
It answers in electric furnace, and uses silicon carbide crucible；As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses carbon
SiClx crucible；Sensing heating forms alloy solution to 500-600 degree, and is sufficiently stirred 10 minutes left sides using electromagnetic agitation effect
It is right；Alloy liquid is stood to be cast to after ten minutes in the same level equipment of heat top in the heat preservation of 500-600 degree and carries out semi-continuous casting
At required billet, it is 5-8m/min that ingot casting, which moves down speed,.The ingot casting can regard galvanizing by dipping raw material and be used for subsequent handling
Thin plate galvanizing by dipping processing, wherein the operating temperature of galvanizing by dipping be 420-480 degree, the hot dipping time be 30-60 seconds.
The alloy is used in galvanizing by dipping, and coating and matrix form alloy transition layer, have resistance to the generation of alloying reaction layer
Stagnant effect.Thus boundary can be effectively prevented and cracked, reduced existing for the intersection between alloy-layer and parent metal
Apparent gap so that the combination of alloy transition layer and parent metal is more closely.The corrosion potential and dip galvanized of the alloy
It is essentially identical, but its corrosion current is only the 0.2-0.3 of traditional zn alloy coating.The corrosion potential of the alloy layer and pure zinc
Corrosion potential is very nearly the same.The salt spray resistance of the alloy layer, resistance to sulfur dioxide and hot resistance test performance compare galvanizing by dipping
Layer is good, and there are clear superiorities for corrosion resistance, can be obtained using relatively thin zinc aluminum alloy coating identical even preferably anti-
Rotten effect.This can not only be effectively reduced cost, and also be compliant with the requirement of China's economic development energy-saving and emission-reduction.Thus in common public affairs
In the environment of road, 40 years or more can be used safely without significantly corroding now as highway guard boom coating using the material
As occurring.In addition, the novel coating interior tissue is dense, the continuity of coating each region performance ensure that.In addition, institute
The large deformation of 40-50% can be subjected to without causing the coating of galvanizing by dipping to fall off by obtaining coating.Thus increasingly increase in traffic loading
Safety and the actual life of highway guard boom can largely be improved big today.
Embodiment 2
One kind using isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy in 420-480 degree.By weight percentage, alloy
Chemical composition be：Ca:0.4wt.%,Li:0.2wt.%,Co:0.5wt.%,Al:35.0wt.%,Sn:5.2wt.%,Pr:
0.2wt.%,Sm:0.4wt.%, surplus are zinc.The preparation method of alloy：As above the raw material matched is added to the sense of argon gas protection
It answers in electric furnace, and uses silicon carbide crucible；As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses carbon
SiClx crucible；Sensing heating forms alloy solution to 500-600 degree, and is sufficiently stirred 10 minutes left sides using electromagnetic agitation effect
It is right；Alloy liquid is stood to be cast to after ten minutes in the same level equipment of heat top in the heat preservation of 500-600 degree and carries out semi-continuous casting
At required billet, it is 5-8m/min that ingot casting, which moves down speed,.The ingot casting can regard galvanizing by dipping raw material and be used for subsequent handling
Thin plate galvanizing by dipping processing, wherein the operating temperature of galvanizing by dipping be 420-480 degree, the hot dipping time be 30-60 seconds.
The alloy is used in galvanizing by dipping, and coating and matrix form alloy transition layer, have resistance to the generation of alloying reaction layer
Stagnant effect.Thus boundary can be effectively prevented and cracked, reduced existing for the intersection between alloy-layer and parent metal
Apparent gap so that the combination of alloy transition layer and parent metal is more closely.The corrosion potential and dip galvanized of the alloy
It is essentially identical, but its corrosion current is only the 0.2-0.3 of traditional zn alloy coating.The corrosion potential of the alloy layer and pure zinc
Corrosion potential is very nearly the same.The salt spray resistance of the alloy layer, resistance to sulfur dioxide and hot resistance test performance compare galvanizing by dipping
Layer is good, and there are clear superiorities for corrosion resistance, can be obtained using relatively thin zinc aluminum alloy coating identical even preferably anti-
Rotten effect.This can not only be effectively reduced cost, and also be compliant with the requirement of China's economic development energy-saving and emission-reduction.Thus in common public affairs
In the environment of road, 40 years or more can be used safely without significantly corroding now as highway guard boom coating using the material
As occurring.In addition, the novel coating interior tissue is dense, the continuity of coating each region performance ensure that.In addition, institute
The large deformation of 40-50% can be subjected to without causing the coating of galvanizing by dipping to fall off by obtaining coating.Thus increasingly increase in traffic loading
Safety and the actual life of highway guard boom can largely be improved big today.
Embodiment 3
One kind using isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy in 420-480 degree.By weight percentage, alloy
Chemical composition be：Ca:0.3wt.%,Li:0.1wt.%,Co:0.4wt.%,Al:32.0wt.%,Sn:4.8wt.%,Pr:
0.1wt.%,Sm:0.3wt.%, surplus are zinc.The preparation method of alloy：As above the raw material matched is added to the sense of argon gas protection
It answers in electric furnace, and uses silicon carbide crucible；As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses carbon
SiClx crucible；Sensing heating forms alloy solution to 500-600 degree, and is sufficiently stirred 10 minutes left sides using electromagnetic agitation effect
It is right；Alloy liquid is stood to be cast to after ten minutes in the same level equipment of heat top in the heat preservation of 500-600 degree and carries out semi-continuous casting
At required billet, it is 5-8m/min that ingot casting, which moves down speed,.The ingot casting can regard galvanizing by dipping raw material and be used for subsequent handling
Thin plate galvanizing by dipping processing, wherein the operating temperature of galvanizing by dipping be 420-480 degree, the hot dipping time be 30-60 seconds.
The alloy is used in galvanizing by dipping, and coating and matrix form alloy transition layer, have resistance to the generation of alloying reaction layer
Stagnant effect.Thus boundary can be effectively prevented and cracked, reduced existing for the intersection between alloy-layer and parent metal
Apparent gap so that the combination of alloy transition layer and parent metal is more closely.The corrosion potential and dip galvanized of the alloy
It is essentially identical, but its corrosion current is only the 0.2-0.3 of traditional zn alloy coating.The corrosion potential of the alloy layer and pure zinc
Corrosion potential is very nearly the same.The salt spray resistance of the alloy layer, resistance to sulfur dioxide and hot resistance test performance compare galvanizing by dipping
Layer is good, and there are clear superiorities for corrosion resistance, can be obtained using relatively thin zinc aluminum alloy coating identical even preferably anti-
Rotten effect.This can not only be effectively reduced cost, and also be compliant with the requirement of China's economic development energy-saving and emission-reduction.Thus in common public affairs
In the environment of road, 40 years or more can be used safely without significantly corroding now as highway guard boom coating using the material
As occurring.In addition, the novel coating interior tissue is dense, the continuity of coating each region performance ensure that.In addition, institute
The large deformation of 40-50% can be subjected to without causing the coating of galvanizing by dipping to fall off by obtaining coating.Thus increasingly increase in traffic loading
Safety and the actual life of highway guard boom can largely be improved big today.
Claims (3)
1. a kind of isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy；According to weight percent, the ingredient of the alloy is:
Ca:0.2-0.4wt.%,Li:0.1-0.2wt.%,Co:0.4-0.5wt.%,Al:30.0-35.0wt.%,Sn:4.8-5.2wt.%,
Pr:0.1-0.2wt.%,Sm:0.2-0.4wt.%, surplus are zinc.
2. isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy described in 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 uses silicon carbide crucible；Sensing heating is to 500-600
Degree forms alloy solution, and is sufficiently stirred 10 minutes or so using electromagnetic agitation effect；Alloy liquid is kept the temperature in 500-600 degree
Standing is cast in the same level equipment of heat top and carries out semi-continuous casting into required billet after ten minutes, and ingot casting moves down speed and is
5-8m/min。
3. isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy according to claim 1, it is characterised in that comprising as follows
Procedure of processing：The ingot casting can regard steel plate galvanizing by dipping of the galvanizing by dipping raw material for subsequent handling and handle, wherein hot-dip
The operating temperature of zinc is 420-480 degree, and the hot dipping time is 30-60 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587668.9A CN108441702A (en) | 2018-06-08 | 2018-06-08 | Isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy and its processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587668.9A CN108441702A (en) | 2018-06-08 | 2018-06-08 | Isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy and its processing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108441702A true CN108441702A (en) | 2018-08-24 |
Family
ID=63206799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810587668.9A Withdrawn CN108441702A (en) | 2018-06-08 | 2018-06-08 | Isolation railings for road reinforcing bar hot-dip anticollision zinc lithium alloy and its processing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108441702A (en) |
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2018
- 2018-06-08 CN CN201810587668.9A patent/CN108441702A/en not_active Withdrawn
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Application publication date: 20180824 |