CN108559923A - Stainless-steel pan material of the hot-dip aluminizing high heat conduction containing Ti and Sc - Google Patents

Stainless-steel pan material of the hot-dip aluminizing high heat conduction containing Ti and Sc Download PDF

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Publication number
CN108559923A
CN108559923A CN201810626038.8A CN201810626038A CN108559923A CN 108559923 A CN108559923 A CN 108559923A CN 201810626038 A CN201810626038 A CN 201810626038A CN 108559923 A CN108559923 A CN 108559923A
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hot
alloy
dip
dip aluminizing
iron
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杨长江
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Guangzhou Xianzhi Technology Co Ltd
Guangzhou Yuzhi Technology Co Ltd
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Guangzhou Xianzhi Technology Co Ltd
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Publication of CN108559923A publication Critical patent/CN108559923A/en
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • 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
    • C23C2/003—Apparatus
    • 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
    • C23C2/12—Aluminium or alloys based thereon

Abstract

The invention discloses stainless-steel pan material of the hot-dip aluminizing high heat conduction containing Ti and Sc.According to weight percent, the ingredient of the alloy is:Rb:0.2‑0.5wt.%,Ti:0.3‑0.8wt.%,Cr:8.0‑9.0wt.%,Mn:5.0‑6.0wt.%,Ni:0.6‑0.8wt.%,Sc:0.2‑0.4wt.%,S:0.1 0.2wt.%, surplus are iron.The patent solves the present situation that current China's hot-dip aluminizing alloy field iron pan material technology falls behind, and is broken through by the innovation and optimization of materialogy and restricts China high-end field aludip production technology and equipment Development bottleneck.In the near future, which will obtain most commonly used application.

Description

Stainless-steel pan material of the hot-dip aluminizing high heat conduction containing Ti and Sc
Technical field
The present invention relates to technical field of alloy, specifically, being related to a kind of ferroalloy.
Background technology
Metal material is damaged, referred to as metal erosion by surrounding medium physics and chemical action.The corrosion of metal is most often The etch state seen.When corrosion, chemistry or electrochemistry heterogeneous reaction have occurred on the interface of metal, metal is made to be transferred to oxidation （Ion）State.This can significantly reduce the mechanical properties such as the intensity, plasticity, toughness of metal material, destroy the geometry of metal component Shape increases the abrasion between part, deteriorates the physical properties such as electrical and optical, shortens the service life of equipment, or even cause fire The catastrophic failures such as calamity, explosion.According to statistics, every year since steel loss caused by metal erosion accounts for about the 10- of current year output of steel Just it is even more impossible to calculate for the indirect losses such as halt production caused by 20%. metal erosion accidents, power failure.
A kind of effective means of steel anti-corrosive is galvanizing by dipping, and galvanizing by dipping industry is in the late three decades with cold-strip steel Rapid development and obtained extensive development.Galvanizing by dipping is by the ironware of cleaning, via the wetting of fluxing agent Effect immerses in zinc bath, steel is made to react the coating for generating alloying with fused zinc.Galvanizing reinforcing bar is in terms of technique and transport There is apparent advantage compared with other protection methods.In hot galvanizing process, plated rebar surface can plate to exhaustive To metal, including the more difficult recess touched and not closed surface of internal cavity, and thickness of coating is identical as other positions even more Thickness, the coating have better attached property than other coatings.In addition, the corrosion potential of pure zinc coating be less than rebar matrix, therefore Zinc coat is by the electrochemical protection that can also provide sacrificial anode when breakage to matrix.With paint and epoxy resin coating phase Than not only binding force is more preferable for hot galvanized layer, but also case hardness also higher, in the protection of processing, transport and work progress It is relatively simple.
The industrial production history of galvanizing by dipping is very long, and product yield is big, has a wide range of application, as the basic work of hot-dip The galvanizing by dipping technology of skill is very ripe.Galvanizing is arranged using most common, most effective technique in steel anti-corrosion method It applies.In building industry, for all types of industries and lightgage steel joist, building storey panel, corrugated sheet, the rolling screen door etc. of civil buildings； In terms of household electrical appliances and light industry, it to be used for the shell and bottom plate of all kinds of household electrical appliance；Galvanized steel plain sheet is widely used in light industry, household electrical appliances, vapour Vehicle and building industry.In the automotive industry, car body, shell, inner panel, bottom plate etc. are used for.It greatly develops electric power, hand in China Logical, communication, the energy and urban infrastructure, with building, the powerful development of household electrical appliances, auto industry, the zinc-plated industry in China faces Unprecedented opportunities and huge market.
After Batch Hot Dip Galvanizing, it is equivalent to primary annealing, can effectively improve the mechanical performance of steel matrix, eliminates steel Stress when part molding welding, is conducive to carry out turnery processing to steel construction piece.But pure zinc and zn alloy coating usually go out The bad phenomenon of existing gloomy, super thick and poor adhesion.In addition, in the deterioration of environment and environment corrosive medium increase, example As the anti-corrosion ability of sulfide and villaumite, existing galvanizing by dipping cannot increasingly meet existing demand.In order to solve this Problem had developed a variety of galvanizing techniques in recent years, such as multicomponent alloy is zinc-plated, high temperature is zinc-plated, admiro is zinc-plated.These are great On the one hand the zn alloy coating of excellent anti-corrosion ability alleviates the demand to efficient corrosion resisting performance significantly, but substantially not Change the present situation that hot dip galvanized zinc alloy cannot have been met the requirements.
Hot-dip aluminizing alloy is just of interest by more and more industrial quarters at present as a kind of novel coating type.Heat The main material aluminium ratio of immersion plating aluminium alloy has lower electronegativity, can be provided steel in corrosion process more excellent Protective effect.Currently, the production technology and technology of hot dip alumin(i)um coating always by Europe An Saile meter tal fibres and Japan it is new Day iron is lived the several enterprises such as gold and is grasped.From the point of view of market situation, the face continuous hot aluminium-plated alloy-steel plate industry of China is in for not The state of market that should be asked.
The iron pan in hot-dip aluminizing field mainly uses outside mode of heating.Aluminum pot be welded with low carbon steel plate or cylinder iron cast and At heat source is placed on aluminum pot bottom or both sides and heat is transmitted to molten aluminum by the heat transfer of wall.Casting iron pan is to use gray cast iron Casting, aluminum melting amount is generally at 2 tons hereinafter, be mainly used for the miniature parts hot-dip aluminizing such as steel part, bolt.The aluminum pot material of steel plate welding Mostly low carbon low silicon steel plate is used to manufacture.Hot-dip aluminizing iron pan is at low cost, manufacturing process is simple, quick heating, easy to maintenance, obtains Relatively broad application.But due to there is more serious chemical interaction, thus hot-dip between molten aluminum and iron pan The iron pan of aluminium seriously corroded at work, service life is extremely short, and improper aluminium consumption is big.Thus, to hot-dip aluminizing iron Pot, which carries out innovation and industrialization, has prodigious market value.In face of the domestic and international market competition being growing more intense, it is necessary to add Fast structural adjustment paces, this is not only the needs of China's metallurgical industry survival and development and the hair of world today's metallurgical industry Exhibition trend.By technological innovation, optimization design, precision manufactureing and foreign technology cooperation, breaks through and restrict the life of China's hot-dip aluminizing Production technology and equipment Development bottleneck.
Invention content
The purpose of the present invention is to overcome the deficiency in the prior art, and providing one kind can make under 700-780 degree atmospheric conditions Stainless-steel pan material of the hot-dip aluminizing high heat conduction containing Ti and Sc.
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of stainless-steel pan material of the hot-dip aluminizing high heat conduction containing Ti and Sc.By weight percentage, the group of alloy becomes Rb: 0.2-0.5wt.%,Ti:0.3-0.8wt.%,Cr:8.0-9.0wt.%,Mn:5.0-6.0wt.%,Ni:0.6-0.8wt.%,Sc: 0.2-0.4wt.%,S:0.1-0.2wt.%, surplus are iron.
The preparation method of stainless-steel pan material of the above-mentioned hot-dip aluminizing high heat conduction containing Ti and Sc, 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；Sensing heating is to 1500-1600 Degree forms alloy solution, and is sufficiently stirred 10 minutes or so using electromagnetic agitation effect；Alloy liquid is protected in 1500-1600 degree Temperature stands and is cast into required billet after ten minutes.The ingot casting of gained is subjected to hot rolling under 800 degree, amount under every time rolling For 10-15%.Intermediate anneal temperature is 900 degree after per hot rolling twice, keeps the temperature 1 hour.It is 40- that material, which is finally rolled into thickness, The iron crucible of the steel plate of 60mm, hot-dip aluminizing can be prepared with these steel plates by way of deforming and welding.Hot dipping The technique of alloy plating is：Hot-dip temperature is 700-780 degree, and the hot-dip time is 30-60 seconds.
Compared with prior art, the present invention has the advantages that：
（1）Hot-dip aluminizing be it is a kind of apply to obtain most commonly used steel anti-corrosive technology, but traditional irony hot dipping pot will produce largely Aluminium slag.It puies forward quotient's economic benefit, a major obstacle of model change at hot-dip industry.Traditional hot-dip aluminizing It is contacted when plating aluminum with molten aluminum with iron pan, with iron-based body vigorous reaction occurs for molten aluminum, rapid to corrode iron-based body, leads to a large amount of iron It enters in aluminum bath, the iron content in aluminum bath is made to generate aluminium slag more than equilbrium solubility.It is exactly to reduce iron pan to exist to reduce aluminium slag Dissolving in aluminum plating liquid, domestic and international application it is most be exactly to aluminizing with iron pan transformation or improved mode.Including common iron The side heating of pot, mode of operation, the distribution of heating source.This patent is carried out to aluminizing with iron pan by advanced materialogy technology Innovation is optimized the reciprocation of iron pan and molten aluminum by adjusting the alloying element type and content in iron pan.
（2）External hot-dip aluminizing iron pan, service life are typically maintained in 2 years or so.Domestic hot-dip aluminizing pipe, plate, Hot-dip aluminizing iron pan is prepared using good mild steel mostly with the factory of wire rod, there are also midget plants to use cast iron Pot.The case where being used according to each plant operation is different, and there are many service life difference of iron pan, 1-2 short week, and long can To reach 1-2 or so.It is aluminized the iron pan with iron pan material preparation using the novel hot-dip of this patent, in common hot-dip aluminizing Under operating condition, the service life of iron pan can reach 3-4 or so.It to stop production due to replacing iron pan, present patent application protection Iron pan alloy thus greatly improve production efficiency.
（3）The hot-dip aluminizing alloy iron crucible prepared using the alloy of this patent, can significantly improve the corrosion resistant of inner surface Erosion and abrasion resistance properties.This alloy material has excellent mechanical performance at high temperature.In 420-480 temperature ranges, the material The yield strength of material may remain in 250-280MPa or so, and common cast iron or mild steel has declined at such a temperature To 150MPa or less.Hot-dip aluminizing alloy iron pan prepared by traditional material, the capacity of alloy for hot-dip is 2 tons or so.Due to There is the alloy material of this patent excellent mechanical behavior under high temperature, hot-dip aluminizing iron pan can have the alloy capacity of bigger（It reaches To 4 tons or more）.In addition, having excellent service life.The alloy is with the extremely excellent capacity of heat transmission.It is rolled into steel plate Afterwards, the heat transfer coefficient of the alloy is 85-92W/m ﹒ K.And the heat transfer coefficient of traditional carbon steel is typically maintained in the left sides 40-45 W/m ﹒ K It is right.After thus the alloy is used to prepare hot-dip aluminizing iron pan, the conductivity of heat of iron pan can be greatly improved, and contribute to molten aluminum The uniformity of internal temperature and the uniformity of thickness of coating.
Specific implementation mode
Embodiment 1
A kind of stainless-steel pan material of the hot-dip aluminizing high heat conduction containing Ti and Sc.By weight percentage, the group of alloy becomes Rb: 0.2wt.%,Ti:0.3wt.%,Cr:8.0wt.%,Mn:5.0wt.%,Ni:0.6wt.%,Sc:0.2wt.%,S:0.1wt.%, surplus For iron.The preparation method of stainless-steel pan material of the above-mentioned hot-dip aluminizing high heat conduction containing Ti and Sc, 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；Sensing heating is to 1500-1600 degree shapes It is sufficiently stirred 10 minutes or so at alloy solution, and using electromagnetic agitation effect；Alloy liquid is quiet in the heat preservation of 1500-1600 degree It sets and is cast into required billet after ten minutes.The ingot casting of gained is subjected to hot rolling under 800 degree, amount is under every time rolling 10-15%.Intermediate anneal temperature is 900 degree after per hot rolling twice, keeps the temperature 1 hour.It is 40- that material, which is finally rolled into thickness, The iron crucible of the steel plate of 60mm, hot-dip aluminizing can be prepared with these steel plates by way of deforming and welding.Hot dipping The technique of alloy plating is：Hot-dip temperature is 700-780 degree, and the hot-dip time is 30-60 seconds.
Hot-dip aluminizing iron pan material can significantly reduce the reciprocation of molten aluminum after optimizing components, reduce Solubility in molten aluminum, thus yield and the salvaging of aluminium slag can be effectively reduced.The hot-dip prepared using the alloy of this patent Aluminium alloy iron crucible can significantly improve the corrosion-resistant and abrasion resistance properties of inner surface.This alloy material has excellent at high temperature Different mechanical performance.In 420-480 temperature ranges, the yield strength of the material may remain in 250-280MPa or so, and Common cast iron or mild steel has descended to 150MPa or less at such a temperature.Hot-dip aluminizing alloy prepared by traditional material Capacity with iron pan, alloy for hot-dip is 2 tons or so.Since the alloy material of this patent has excellent mechanical behavior under high temperature, Hot-dip aluminizing iron pan can have the alloy capacity of bigger（Reach 4 tons or more）.In addition, having excellent service life.The conjunction Gold is with the extremely excellent capacity of heat transmission.After being rolled into steel plate, the heat transfer coefficient of the alloy is 85-92W/m ﹒ K.And conventional carbon The heat transfer coefficient of steel is typically maintained in 40-45 W/m ﹒ K or so.After thus the alloy is used to prepare hot-dip aluminizing iron pan, iron pan Conductivity of heat can be greatly improved, contribute to the uniformity of molten aluminum internal temperature and the uniformity of thickness of coating.
Embodiment 2
A kind of stainless-steel pan material of the hot-dip aluminizing high heat conduction containing Ti and Sc.By weight percentage, the group of alloy becomes Rb: 0.5wt.%,Ti:0.8wt.%,Cr:9.0wt.%,Mn:6.0wt.%,Ni:0.8wt.%,Sc:0.4wt.%,S:0.2wt.%, surplus For iron.The preparation method of stainless-steel pan material of the above-mentioned hot-dip aluminizing high heat conduction containing Ti and Sc, 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；Sensing heating is to 1500-1600 degree shapes It is sufficiently stirred 10 minutes or so at alloy solution, and using electromagnetic agitation effect；Alloy liquid is quiet in the heat preservation of 1500-1600 degree It sets and is cast into required billet after ten minutes.The ingot casting of gained is subjected to hot rolling under 800 degree, amount is under every time rolling 10-15%.Intermediate anneal temperature is 900 degree after per hot rolling twice, keeps the temperature 1 hour.It is 40- that material, which is finally rolled into thickness, The iron crucible of the steel plate of 60mm, hot-dip aluminizing can be prepared with these steel plates by way of deforming and welding.Hot dipping The technique of alloy plating is：Hot-dip temperature is 700-780 degree, and the hot-dip time is 30-60 seconds.
Hot-dip aluminizing iron pan material can significantly reduce the reciprocation of molten aluminum after optimizing components, reduce Solubility in molten aluminum, thus yield and the salvaging of aluminium slag can be effectively reduced.The hot-dip prepared using the alloy of this patent Aluminium alloy iron crucible can significantly improve the corrosion-resistant and abrasion resistance properties of inner surface.This alloy material has excellent at high temperature Different mechanical performance.In 420-480 temperature ranges, the yield strength of the material may remain in 250-280MPa or so, and Common cast iron or mild steel has descended to 150MPa or less at such a temperature.Hot-dip aluminizing alloy prepared by traditional material Capacity with iron pan, alloy for hot-dip is 2 tons or so.Since the alloy material of this patent has excellent mechanical behavior under high temperature, Hot-dip aluminizing iron pan can have the alloy capacity of bigger（Reach 4 tons or more）.In addition, having excellent service life.The conjunction Gold is with the extremely excellent capacity of heat transmission.After being rolled into steel plate, the heat transfer coefficient of the alloy is 85-92W/m ﹒ K.And conventional carbon The heat transfer coefficient of steel is typically maintained in 40-45 W/m ﹒ K or so.After thus the alloy is used to prepare hot-dip aluminizing iron pan, iron pan Conductivity of heat can be greatly improved, contribute to the uniformity of molten aluminum internal temperature and the uniformity of thickness of coating.
Embodiment 3
A kind of stainless-steel pan material of the hot-dip aluminizing high heat conduction containing Ti and Sc.By weight percentage, the group of alloy becomes Rb: 0.4wt.%,Ti:0.6wt.%,Cr:8.2wt.%,Mn:5.2wt.%,Ni:0.7wt.%,Sc:0.3wt.%,S:0.1wt.%, surplus For iron.The preparation method of stainless-steel pan material of the above-mentioned hot-dip aluminizing high heat conduction containing Ti and Sc, 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；Sensing heating is to 1500-1600 degree shapes It is sufficiently stirred 10 minutes or so at alloy solution, and using electromagnetic agitation effect；Alloy liquid is quiet in the heat preservation of 1500-1600 degree It sets and is cast into required billet after ten minutes.The ingot casting of gained is subjected to hot rolling under 800 degree, amount is under every time rolling 10-15%.Intermediate anneal temperature is 900 degree after per hot rolling twice, keeps the temperature 1 hour.It is 40- that material, which is finally rolled into thickness, The iron crucible of the steel plate of 60mm, hot-dip aluminizing can be prepared with these steel plates by way of deforming and welding.Hot dipping The technique of alloy plating is：Hot-dip temperature is 700-780 degree, and the hot-dip time is 30-60 seconds.
Hot-dip aluminizing iron pan material can significantly reduce the reciprocation of molten aluminum after optimizing components, reduce Solubility in molten aluminum, thus yield and the salvaging of aluminium slag can be effectively reduced.The hot-dip prepared using the alloy of this patent Aluminium alloy iron crucible can significantly improve the corrosion-resistant and abrasion resistance properties of inner surface.This alloy material has excellent at high temperature Different mechanical performance.In 420-480 temperature ranges, the yield strength of the material may remain in 250-280MPa or so, and Common cast iron or mild steel has descended to 150MPa or less at such a temperature.Hot-dip aluminizing alloy prepared by traditional material Capacity with iron pan, alloy for hot-dip is 2 tons or so.Since the alloy material of this patent has excellent mechanical behavior under high temperature, Hot-dip aluminizing iron pan can have the alloy capacity of bigger（Reach 4 tons or more）.In addition, having excellent service life.The conjunction Gold is with the extremely excellent capacity of heat transmission.After being rolled into steel plate, the heat transfer coefficient of the alloy is 85-92W/m ﹒ K.And conventional carbon The heat transfer coefficient of steel is typically maintained in 40-45 W/m ﹒ K or so.After thus the alloy is used to prepare hot-dip aluminizing iron pan, iron pan Conductivity of heat can be greatly improved, contribute to the uniformity of molten aluminum internal temperature and the uniformity of thickness of coating.

Claims (3)

1. a kind of stainless-steel pan material of hot-dip aluminizing high heat conduction containing Ti and Sc；According to weight percent, the ingredient of the alloy For: Rb:0.2-0.5wt.%,Ti:0.3-0.8wt.%,Cr:8.0-9.0wt.%,Mn:5.0-6.0wt.%,Ni:0.6- 0.8wt.%,Sc:0.2-0.4wt.%,S:0.1-0.2wt.%, surplus are iron.
2. stainless-steel pan material of the hot-dip aluminizing high heat conduction described in claim 1 containing Ti and Sc, it is characterised in that including as follows Smelting step：As above the raw material matched is added in the electric induction furnace of argon gas protection, and uses silicon carbide crucible；Sensing heating Alloy solution is formed to 1500-1600 degree, and is sufficiently stirred 10 minutes or so using electromagnetic agitation effect；Alloy liquid is existed The heat preservation of 1500-1600 degree is stood is cast into required billet after ten minutes；The ingot casting of gained is subjected to hot rolling under 800 degree, Amount is 10-15% under every time rolling；Intermediate anneal temperature is 900 degree after per hot rolling twice, keeps the temperature 1 hour；Finally material is rolled The steel plate that thickness is 40-60mm is made, the iron crucible of hot-dip aluminizing can be with these steel plates by way of deforming and welding It is prepared.
3. according to stainless-steel pan material of the hot-dip aluminizing high heat conduction described in claim 1 containing Ti and Sc, it is characterised in that comprising such as It is lower to use step：The technique of hot-dip aluminizing alloy is：Hot-dip temperature is 700-780 degree, and the hot-dip time is 30-60 seconds.
CN201810626038.8A 2018-06-18 2018-06-18 Stainless-steel pan material of the hot-dip aluminizing high heat conduction containing Ti and Sc Withdrawn CN108559923A (en)

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Application Number Priority Date Filing Date Title
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