CN108300902A - Low temperature bolt galvanizing by dipping resistance to oxidation kirsite containing Sc and Mn - Google Patents
Low temperature bolt galvanizing by dipping resistance to oxidation kirsite containing Sc and Mn Download PDFInfo
- Publication number
- CN108300902A CN108300902A CN201810471895.5A CN201810471895A CN108300902A CN 108300902 A CN108300902 A CN 108300902A CN 201810471895 A CN201810471895 A CN 201810471895A CN 108300902 A CN108300902 A CN 108300902A
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- Prior art keywords
- dipping
- galvanizing
- bolt
- degree
- zinc
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Classifications
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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
The invention discloses low temperature bolt galvanizing by dipping resistances to oxidation to contain Sc and Mn kirsites and its processing technology.According to weight percent, the ingredient of the alloy is：Ca:0.3‑0.5wt.%,Sc:0.2‑0.4wt.%,Mn:0.8‑1.2wt.%,S:0.1‑0.2wt.%,Sb:0.5‑0.8wt.%,Cr:0.5 0.8wt.%, surplus are zinc.Galvanizing by dipping of the material for bolt is handled, and can plate uniform dip galvanized in bolt surface in 10 15 seconds interior at a temperature of 320 340 degree.Due to reducing processing temperature and time, the mechanical property reduction of bolt is not obvious.With raising production efficiency, cost-effective effect.
Description
Technical field
The present invention relates to technical field of alloy, specifically, being related to a kind of kirsite.
Background technology
Galvanizing and galvanizing by dipping are also named in galvanizing.It is a kind of effective anti-corrosion of metal mode, is mainly used for every profession and trade
On metal structure facility.It is so that steel member surface is adhered to zinc in 445 DEG C or so zinc liquid melted of steel part immersion after derusting
Layer, to play corrosion-resistant purpose.Galvanizing is developed by more ancient hot-dipping method, since France in 1836 is heat
It is zinc-plated be applied to industry since, had in 1 hundred 40 history.
Briefly, the technological process of galvanizing by dipping is：Finished product acid-washing-washing-plus quickening liquid-drying-rack plating-cooling-
Medicine-cleaning-polishing-completion.Galvanizing by dipping has the advantages that a series of：The hardness number of zinc coat is also bigger than steel, therefore it is anti-
Impact and attrition resistance are quite good.In corner region, zinc layers are often also thicker than other places, and have good toughness and wear-resistant
Consumption.Even if because by prodigious mechanical wounding or other reasons.The Zinc Scaling of sub-fraction is caused, iron-based is exposed, at this point,
Surrounding zinc layers will play the function of sacrificial anode, to protect steel herein, it be made not weather.The consumption of zinc layers in an atmosphere
It is slowly, the about 1/17-1/18 of steel corrosion rate, the service life is far more than other any coatings.
Up to now, galvanizing is still that most common, most effective technological measure is applied in steel anti-corrosion method.It is building
In industry, for all types of industries and lightgage steel joist, building storey panel, corrugated sheet, the rolling screen door etc. of civil buildings.In household electrical appliances and gently
Industrial aspect is used for the shell and bottom plate of all kinds of household electrical appliance.In the automotive industry, be used for car body, shell, inner panel,
Bottom plate etc..Greatly develop electric power, traffic, communication, the energy and urban infrastructure in China.With building, household electrical appliances, auto industry
Powerful development, the zinc-plated industry in China face unprecedented opportunities and huge market.
Galvanizing bolt is also referred to as galvanizing bolt, is the special bolt product gone out by heating galvanizing process for producing, extensively
Applied to industrial infrastructure construction and mechanical processing.Galvanizing bolt is also referred to as galvanizing bolt, be by bolt, by oil removing,
Derusting shows the surface without dirty infiltration, is immersed in immediately in the coating bath that zinc is heated to melting in advance, in workpiece surface
The method for forming one layer of zinc coating.Bolt is zinc-plated can also to use cold galvanizing（Electrogalvanizing）Method carry out zinc-plated antirust.It is cold
It is zinc-plated, it is that will also pass through oil removing, derusting, shows the cathode being linked into without dirty, infiltration workpiece in special electroplating bath
On, anode zinc.DC power supply is connected, the zinc ion on anode discharges to cathodic migration on cathode, and workpiece is made to plate one
The method of layer zinc layers.But the quality of cold galvanizing is less than galvanizing, zinc coat is than more loose and matrix combination force difference.
The coating of galvanizing bolt is thicker, generally 30-60 microns, and coating anti-corrosion ability is higher.It is suitable for outwork
Steel piece, such as fence for express highway, electric power tower, the more coarse workpiece of large scale fastener long-term rust prevention.Compared with
Early irony running water pipe is also galvanizing.In addition, galvanizing bolt is because of high intensity and corrosion resistance, it is more and more to become electricity
Power steel tower, signal tower, highway barrier first choice bolt.But due to galvanizing at a temperature of 400 degree or so by 30-60 seconds into
It is operated in row zinc liquid, is equivalent to and has carried out average tempering heat treatment at this temperature.Thus, the intensity of bolt can reduce
Phenomenon.The high-strength bolt that this feature prepares cold-drawn performance after hot-dip drastically reduces becoming apparent for performance.
Invention content
The purpose of the present invention is to overcome the deficiency in the prior art, and providing one kind can make under 320-340 degree atmospheric conditions
Low temperature bolt galvanizing by dipping resistance to oxidation kirsite containing Sc and Mn.
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of low temperature bolt galvanizing by dipping resistance to oxidation kirsite containing Sc and Mn.By weight percentage, the group of alloy becomes：
Ca:0.3-0.5wt.%,Sc: 0.2-0.4wt.%,Mn:0.8-1.2wt.%,S:0.1-0.2wt.%,Sb:0.5-0.8wt.%,
Cr:0.5-0.8wt.%, surplus are zinc.The weight that the kirsite loses in fusion process because of the reasons such as volatilization and formation clinker
Amount is in 1.0-2.0wt.% or so.
The preparation method of above-mentioned low temperature bolt galvanizing by dipping resistance to oxidation kirsite containing Sc and Mn, includes the following steps：It will
As above the raw material matched is added in the electric induction furnace of argon gas protection, and uses silicon carbide crucible；As above the raw material matched is added
Enter into the electric induction furnace of atmosphere protection, and uses silicon carbide crucible；Sensing heating forms alloy solution to 500-600 degree, and
It is sufficiently stirred 10 minutes or so using electromagnetic agitation effect；Alloy liquid is stood in the heat preservation of 500-600 degree and is cast after ten minutes
Semi-continuous casting is carried out into required billet in heat top same level equipment, and it is 5-8m/min that ingot casting, which moves down speed,.The ingot casting
It can be handled to carry out protection operation to bolt, wherein hot for the galvanizing by dipping of subsequent handling as bolt galvanizing by dipping raw material
The operating temperature of zinc immersion is 320-340 degree, and the hot dipping time is 10-15 seconds.
Compared with prior art, the present invention has the advantages that：
（1）Patent of the present invention is high for the galvanizing by dipping processing temperature of current bolt, and hot dipping time length leads to bolt mechanical property
It reduces apparent present situation and provides a kind of solution of materialogy.The alloy in the environment of galvanizing by dipping can and bolt shape
At fine and close compound layer.The appearance of this compact transition layer, can be effectively reduced zinc in zinc liquid further with iron-based
Reaction-diffusion terms.In addition, the bond strength of the densification compound layer and matrix is high, the high intensity hot dipping under lower temperature may be implemented
Zinc coating operations.
（2）The material is 320-340 degree for the temperature of the galvanizing by dipping of bolt, and the hot dipping time is 10-15 seconds.It compares
For, traditional galvanizing by dipping temperature is 360-450 degree, and the hot dipping time is 30-60 seconds.Due to reducing hot dipping temperature and hot dipping
Time.From energy saving and for reducing cost, the effect of this patent is apparent.Simultaneously as the hot dipping time is reduced, in unit
Furnace entering volume is improved 3 times or more in time.It is effectively improved the production efficiency of bolt galvanizing by dipping.Due to the heat of this patent
Zinc immersion alloy, operating temperature is not only low, but also the hot dipping time is short.Greatly improve the production of the hot dip galvanized product of iron pan
Amount, has saved cost.
（3）Within the scope of 50-100 degree, the oxidation rate of the material is 2.5 × 10-3Mm/.Thus the material can be
100 degree or less trouble free services 10 years or more occur without apparent oxide layer.Such characteristic of the material is for applying in sand
Galvanizing by dipping on unconcerned or ocean platform has extremely excellent realistic meaning with bolt.In addition, the material is than traditional zinc-base
The density of alloy reduces 3-5% or so.
（4）When the hot dip galvanized zinc alloy is used for the galvanizing by dipping of high-strength bolt, due to reducing hot dipping temperature and hot dipping
The mechanical property reduction of time, bolt are not obvious.Thus it is of great significance for multiple industrial circles.It is contemplated that should
The industrialization of class alloy can obtain great economic and social benefit.In the near future, with more engineer application fields
It expands, such novel alloy will be used widely in more galvanizings by dipping.
Specific implementation mode
Embodiment 1
One kind using low temperature bolt galvanizing by dipping resistance to oxidation kirsite containing Sc and Mn in 320-340 degree.By weight percentage,
The chemical composition of alloy is：Ca:0.3wt.%,Sc: 0.2wt.%,Mn:0.8wt.%,S:0.1wt.%,Sb:0.5wt.%,Cr:
0.5wt.%, surplus are zinc.The preparation method of alloy：As above the raw material matched is added in the electric induction furnace of argon gas protection, and
Using silicon carbide crucible；As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses silicon carbide crucible；Sense
It should be heated to 500-600 degree and form alloy solution, and be sufficiently stirred 10 minutes or so using electromagnetic agitation effect；By alloy liquid
It stands 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 into required circle
Ingot, it is 5-8m/min that ingot casting, which moves down speed,.The ingot casting can regard the hot-dip that bolt galvanizing by dipping raw material is used for subsequent handling
Zinc handles to carry out protection operation to bolt, and the wherein operating temperature of galvanizing by dipping is 320-340 degree, and the hot dipping time is 10-15
Second.
The alloy can form fine and close compound layer in the environment of galvanizing by dipping with bolt.This compact transition layer
Occur, can be effectively reduced zinc in zinc liquid further with the Reaction-diffusion terms of iron-based.In addition, the densification compound layer and matrix
Bond strength it is high, the high-strength hot-dip galvanized operation under lower temperature may be implemented.The material is used for the galvanizing by dipping of bolt
Temperature be 320-340 degree, the hot dipping time be 10-15 seconds.In comparison, traditional galvanizing by dipping temperature is 360-450 degree,
The hot dipping time is 30-60 seconds.Due to reducing hot dipping temperature and hot dipping time.From energy saving and for reducing cost, this patent
Effect is apparent.Simultaneously as reducing the hot dipping time, furnace entering volume is improved 3 times or more within the unit interval.Effectively
Improve the production efficiency of bolt galvanizing by dipping.Within the scope of 50-100 degree, the oxidation rate of the material is 2.5 × 10-3mm/
Year.Thus the material can be in 100 degree or less trouble free services 10 years or more without the appearance of apparent oxide layer.The material this
Sample characteristic is for applying the bolt of the galvanizing by dipping on desert or ocean platform to have extremely excellent realistic meaning.This
Outside, which reduces 3-5% or so than the density of traditional zinc-containing alloy.The hot dip galvanized zinc alloy is used for the hot dipping of high-strength bolt
When zinc-plated, due to reducing hot dipping temperature and hot dipping time, the mechanical property reduction of bolt is not obvious.Thus for multiple works
Industry field is of great significance.
Embodiment 2
One kind using low temperature bolt galvanizing by dipping resistance to oxidation kirsite containing Sc and Mn in 320-340 degree.By weight percentage,
The chemical composition of alloy is：Ca:0.5wt.%,Sc: 0.4wt.%,Mn:1.2wt.%,S:0.2wt.%,Sb:0.8wt.%,Cr:
0.8wt.%, surplus are zinc.The preparation method of alloy：As above the raw material matched is added in the electric induction furnace of argon gas protection, and
Using silicon carbide crucible；As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses silicon carbide crucible；Sense
It should be heated to 500-600 degree and form alloy solution, and be sufficiently stirred 10 minutes or so using electromagnetic agitation effect；By alloy liquid
It stands 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 into required circle
Ingot, it is 5-8m/min that ingot casting, which moves down speed,.The ingot casting can regard the hot-dip that bolt galvanizing by dipping raw material is used for subsequent handling
Zinc handles to carry out protection operation to bolt, and the wherein operating temperature of galvanizing by dipping is 320-340 degree, and the hot dipping time is 10-15
Second.
The alloy can form fine and close compound layer in the environment of galvanizing by dipping with bolt.This compact transition layer
Occur, can be effectively reduced zinc in zinc liquid further with the Reaction-diffusion terms of iron-based.In addition, the densification compound layer and matrix
Bond strength it is high, the high-strength hot-dip galvanized operation under lower temperature may be implemented.The material is used for the galvanizing by dipping of bolt
Temperature be 320-340 degree, the hot dipping time be 10-15 seconds.In comparison, traditional galvanizing by dipping temperature is 360-450 degree,
The hot dipping time is 30-60 seconds.Due to reducing hot dipping temperature and hot dipping time.From energy saving and for reducing cost, this patent
Effect is apparent.Simultaneously as reducing the hot dipping time, furnace entering volume is improved 3 times or more within the unit interval.Effectively
Improve the production efficiency of bolt galvanizing by dipping.Within the scope of 50-100 degree, the oxidation rate of the material is 2.5 × 10-3mm/
Year.Thus the material can be in 100 degree or less trouble free services 10 years or more without the appearance of apparent oxide layer.The material this
Sample characteristic is for applying the bolt of the galvanizing by dipping on desert or ocean platform to have extremely excellent realistic meaning.This
Outside, which reduces 3-5% or so than the density of traditional zinc-containing alloy.The hot dip galvanized zinc alloy is used for the hot dipping of high-strength bolt
When zinc-plated, due to reducing hot dipping temperature and hot dipping time, the mechanical property reduction of bolt is not obvious.Thus for multiple works
Industry field is of great significance.
Embodiment 3
One kind using low temperature bolt galvanizing by dipping resistance to oxidation kirsite containing Sc and Mn in 320-340 degree.By weight percentage,
The chemical composition of alloy is：Ca:0.4wt.%,Sc: 0.3wt.%,Mn:1.0wt.%,S:0.1wt.%,Sb:0.6wt.%,Cr:
0.6wt.%, surplus are zinc.The preparation method of alloy：As above the raw material matched is added in the electric induction furnace of argon gas protection, and
Using silicon carbide crucible；As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses silicon carbide crucible；Sense
It should be heated to 500-600 degree and form alloy solution, and be sufficiently stirred 10 minutes or so using electromagnetic agitation effect；By alloy liquid
It stands 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 into required circle
Ingot, it is 5-8m/min that ingot casting, which moves down speed,.The ingot casting can regard the hot-dip that bolt galvanizing by dipping raw material is used for subsequent handling
Zinc handles to carry out protection operation to bolt, and the wherein operating temperature of galvanizing by dipping is 320-340 degree, and the hot dipping time is 10-15
Second.
The alloy can form fine and close compound layer in the environment of galvanizing by dipping with bolt.This compact transition layer
Occur, can be effectively reduced zinc in zinc liquid further with the Reaction-diffusion terms of iron-based.In addition, the densification compound layer and matrix
Bond strength it is high, the high-strength hot-dip galvanized operation under lower temperature may be implemented.The material is used for the galvanizing by dipping of bolt
Temperature be 320-340 degree, the hot dipping time be 10-15 seconds.In comparison, traditional galvanizing by dipping temperature is 360-450 degree,
The hot dipping time is 30-60 seconds.Due to reducing hot dipping temperature and hot dipping time.From energy saving and for reducing cost, this patent
Effect is apparent.Simultaneously as reducing the hot dipping time, furnace entering volume is improved 3 times or more within the unit interval.Effectively
Improve the production efficiency of bolt galvanizing by dipping.Within the scope of 50-100 degree, the oxidation rate of the material is 2.5 × 10-3mm/
Year.Thus the material can be in 100 degree or less trouble free services 10 years or more without the appearance of apparent oxide layer.The material this
Sample characteristic is for applying the bolt of the galvanizing by dipping on desert or ocean platform to have extremely excellent realistic meaning.This
Outside, which reduces 3-5% or so than the density of traditional zinc-containing alloy.The hot dip galvanized zinc alloy is used for the hot dipping of high-strength bolt
When zinc-plated, due to reducing hot dipping temperature and hot dipping time, the mechanical property reduction of bolt is not obvious.Thus for multiple works
Industry field is of great significance.
Claims (3)
1. a kind of low temperature bolt galvanizing by dipping resistance to oxidation kirsite containing Sc and Mn；According to weight percent, the ingredient of the alloy
For：Ca:0.3-0.5wt.%,Sc: 0.2-0.4wt.%,Mn:0.8-1.2wt.%,S:0.1-0.2wt.%,Sb:0.5-
0.8wt.%,Cr:0.5-0.8wt.%, surplus are zinc.
2. low temperature bolt galvanizing by dipping resistance to oxidation kirsite containing Sc and Mn according to claim 1, it is characterised in that including
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
Alloy solution is formed to 500-600 degree, 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 5-8m/min to move down speed.
3. low temperature bolt galvanizing by dipping resistance to oxidation kirsite containing Sc and Mn according to claim 1, it is characterised in that include
Following procedure of processing：The ingot casting can be handled to come to bolt as bolt galvanizing by dipping raw material for the galvanizing by dipping of subsequent handling
Protection operation is carried out, the wherein operating temperature of galvanizing by dipping is 320-340 degree, and the hot dipping time is 10-15 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810471895.5A CN108300902A (en) | 2018-05-17 | 2018-05-17 | Low temperature bolt galvanizing by dipping resistance to oxidation kirsite containing Sc and Mn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810471895.5A CN108300902A (en) | 2018-05-17 | 2018-05-17 | Low temperature bolt galvanizing by dipping resistance to oxidation kirsite containing Sc and Mn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108300902A true CN108300902A (en) | 2018-07-20 |
Family
ID=62846480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810471895.5A Withdrawn CN108300902A (en) | 2018-05-17 | 2018-05-17 | Low temperature bolt galvanizing by dipping resistance to oxidation kirsite containing Sc and Mn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108300902A (en) |
-
2018
- 2018-05-17 CN CN201810471895.5A patent/CN108300902A/en not_active Withdrawn
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|---|---|---|---|
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| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180720 |
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| WW01 | Invention patent application withdrawn after publication |