CN112033163A - High-temperature-resistant corrosion-resistant long-life alloy spray gun for smelting of pizza furnace and preparation method thereof - Google Patents
High-temperature-resistant corrosion-resistant long-life alloy spray gun for smelting of pizza furnace and preparation method thereof Download PDFInfo
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- 239000000956 alloy Substances 0.000 title claims abstract description 90
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 83
- 239000007921 spray Substances 0.000 title claims abstract description 47
- 238000003723 Smelting Methods 0.000 title claims abstract description 41
- 230000007797 corrosion Effects 0.000 title claims abstract description 29
- 238000005260 corrosion Methods 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 235000013550 pizza Nutrition 0.000 title abstract description 6
- 230000003647 oxidation Effects 0.000 claims abstract description 41
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 41
- 230000033228 biological regulation Effects 0.000 claims abstract description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 239000010941 cobalt Substances 0.000 claims abstract description 6
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 claims description 43
- 239000007789 gas Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 14
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 14
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 14
- QFXZANXYUCUTQH-UHFFFAOYSA-N ethynol Chemical group OC#C QFXZANXYUCUTQH-UHFFFAOYSA-N 0.000 claims description 13
- 238000000227 grinding Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 238000005498 polishing Methods 0.000 claims description 10
- 241001062472 Stokellia anisodon Species 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(IV) oxide Inorganic materials O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 239000010949 copper Substances 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 229910052732 germanium Inorganic materials 0.000 abstract 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 abstract 1
- 229940091263 other mineral product in atc Drugs 0.000 abstract 1
- 229910001175 oxide dispersion-strengthened alloy Inorganic materials 0.000 description 14
- 239000002893 slag Substances 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229940056932 lead sulfide Drugs 0.000 description 1
- 229910052981 lead sulfide Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000006276 transfer reaction Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/16—Introducing a fluid jet or current into the charge
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
- C22C32/0026—Matrix based on Ni, Co, Cr or alloys thereof
-
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/10—Oxidising
- C23C8/12—Oxidising using elemental oxygen or ozone
-
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/10—Oxidising
- C23C8/12—Oxidising using elemental oxygen or ozone
- C23C8/14—Oxidising of ferrous surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/16—Introducing a fluid jet or current into the charge
- F27D2003/162—Introducing a fluid jet or current into the charge the fluid being an oxidant or a fuel
- F27D2003/163—Introducing a fluid jet or current into the charge the fluid being an oxidant or a fuel the fluid being an oxidant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/16—Introducing a fluid jet or current into the charge
- F27D2003/168—Introducing a fluid jet or current into the charge through a lance
Abstract
The invention discloses a high-temperature-resistant corrosion-resistant long-life spray gun alloy smelted by a pizza furnace and a preparation method thereof. The smelting spray gun has high-temperature corrosion resistance and creep resistance, and is cast by one or more composite alloy materials of iron-based ODS alloy, nickel-based ODS alloy or cobalt-based ODS alloy. The invention adopts the high-temperature resistant and corrosion resistant high-temperature ODS alloy to prepare the Isa furnace smelting spray gun, so that the gun body has excellent corrosion resistance and creep resistance under the high-temperature condition. The surface of the spray gun is subjected to novel oxidation regulation and control treatment to form a layer of high-compactness and high-cohesiveness oxide film. Overcomes the defect that the alloy gun body is prepared by 310S and 316L stainless steel in the prior art. A compact oxide layer with excellent bonding performance is generated on the surface of the alloy, so that the smelting metal can be further prevented from diffusing into the alloy gun body, the protection capability of the spray gun in a corrosive environment is further improved, and the service life of the gun body is prolonged. The spray gun of the invention can be widely applied to the field of smelting copper, lead, germanium, tin and other mineral products.
Description
Technical Field
The invention belongs to the technical field of smelting, particularly belongs to the technical field of Isa furnace smelting, and particularly relates to a high-temperature-resistant corrosion-resistant long-life alloy spray gun for Isa furnace smelting and a preparation method thereof.
Background
The pizza smelting method is a molten pool smelting method, and oxygen-enriched air is forcibly blown into a molten pool through a spray gun, so that the molten pool generates strong stirring to accelerate the speed of chemical reaction, heat released by oxidation of sulfur and iron in concentrate is fully utilized for smelting, and high-grade metal is produced (as shown in figure 1). The use of the Isa smelting method can smelt copper concentrate to produce copper matte, directly smelt lead sulfide concentrate to produce lead bullion, smelt tin concentrate to produce tin, and treat various slag materials, reclaimed materials and the like in a smelting plant. The extensive use of the Isaacs smelting technology greatly improves the production efficiency.
The Isa furnace adopts a flat-top circular furnace body lined with refractory bricks, and consists of a furnace shell, a furnace lining, a furnace bottom, a furnace wall, a furnace top, a spray gun clamping frame, a lifting device, a feeding device, an ascending flue, a melt discharge outlet and the like. The lance is inserted into the furnace from the top of the furnace and injects gas, oxygen and fuel into the slag and metal mixture in the molten mass of the furnace, resulting in intense stirring and mixing between the melt-charge-gas formed in the molten bath, enhancing heat transfer, mass transfer and chemical reaction rates, and producing higher economic benefits in terms of fuel demand and productivity. When the slag in the furnace splashes, a hanging layer is formed on the spray gun, so that the part of the spray gun exposed out of the molten mass is protected from being damaged by a strong corrosive environment. The mixture of the product metal and slag of the Isa furnace is discharged from a melt discharge outlet with a cooling water jacket at the bottom of the furnace, enters a precipitation furnace and is separated by utilizing the different specific gravity of the matte and the slag.
The pizza smelting method is characterized by the unique design of a low-pressure vortex device of a spray gun. The operating pressure of the injection gun of the Isa furnace is about 80 kPa, combustion gas can be provided by adopting a single-stage blower, and an expensive compressor is not needed. The spray gun is fixed on a sliding frame and is connected with a pipeline. Various pipe joints of the sliding frame are respectively connected with oil supply and air supply pipelines in a workshop by metal hoses. The depth of the spray gun head inserted into the slag layer is automatically adjusted by a computer according to the pressure change of the injected gas. The lance immersed in the slag is often corroded by the lead slag and loses efficacy, and the whole smelting process is seriously influenced by frequent lance changing operation, so that the economic benefit is influenced.
The failure of the Isaacs lance is mainly due to intergranular corrosion. The cause of intergranular corrosion may be precipitation of metal carbides or intermetallic compounds on grain boundaries; the cause of pitting corrosion may be that the residual alpha phase in the spray gun and the gamma phase in the matrix constitute a two-phase zone, forming a micro-battery, eventually leading to pitting corrosion. The technical scheme for solving the defect is beneficial to prolonging the service life of the spray gun of the Isa furnace, reducing the cost and improving the economic benefit.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant corrosion-resistant long-life alloy spray gun for smelting of a pizza furnace, which is high-temperature-resistant and long-life; the invention also aims to provide a preparation method of the high-temperature-resistant corrosion-resistant long-life alloy spray gun for the smelting of the Isa furnace.
The first purpose of the invention is realized by that the smelting spray gun has high-temperature corrosion resistance and creep resistance, and is cast by one or more composite alloy materials of iron-based ODS alloy, nickel-based ODS alloy or cobalt-based ODS alloy.
The other purpose of the invention is realized by that the preparation method of the high-temperature-resistant corrosion-resistant melting alloy spray gun comprises the steps of melting and casting, polishing treatment and oxidation treatment, and specifically comprises the following steps:
(1) smelting and casting: namely smelting by using a vacuum induction furnace, putting the alloy with the process formula into the smelting furnace, and controlling the vacuum degree to be 1 multiplied by 10-5Pa~1×10-3Pa, filling of materialsCasting the gun body after separately melting;
(2) polishing treatment: grinding and polishing the cast gun body; the roughness of the treated gun body is controlled to be Ra1.6-Ra12.5.
(3) Oxidation treatment: and carrying out oxidation regulation treatment on the polished spray gun body to form an oxide film with the thickness of 0-100 mu m on the surface of the spray gun body.
The invention utilizes Oxide dispersion-strengthened alloy (ODS) to prepare the smelting gun body of the Isa furnace. ODS is used as a spray gun substrate material, wherein carbides formed by tantalum, niobium, titanium or vanadium elements are distributed on a crystal boundary, and the ODS can play a role in strengthening; form an ultra-stable strengthening state, so that the material has the characteristic of high-temperature creep resistance. Further, a layer of compact oxide film is formed on the surface of the cast gun body through an oxidation regulation and control means, so that the service life of the spray gun is prolonged, and the influence caused by replacement production of the spray gun is reduced. The defects that in the prior art, the carbon content of 310S and 316L stainless steel smelting spray guns is high, and easily formed carbide or intermetallic compounds are separated out at crystal boundaries to cause the failure of the spray guns are overcome. The carbon content of the high-temperature alloy material adopted by the invention can be controlled within a certain range. Moreover, elements such as hafnium, tantalum and the like added into the high-temperature alloy can inhibit the formation of a part of intermetallic compounds, and the service life of the spray gun is prolonged. Meanwhile, an oxidation regulation and control means is adopted, a compact oxide layer with excellent bonding performance is generated on the surface of the alloy, the smelting metal can be further prevented from diffusing into the alloy gun body, the protection capability of the spray gun in a corrosive environment is further improved, and the service life of the gun body is prolonged.
Drawings
FIG. 1 is a schematic view of a matched pile body of a spray gun and a furnace body of an Isa furnace according to the present invention;
FIG. 2 is a microscopic image of the autogenous oxide film on the surface of the spray gun of the Isa furnace of the present invention;
in the figure: 1-a feed opening; 2, a material guide pipe; 3, mixing the fuel gas; 4, a smoke exhaust pipeline; 5, spraying a gun; 6-melt.
Detailed Description
The invention will be further described with reference to the following drawings and examples, but the invention is not limited thereto in any way, and any modification or improvement based on the teaching of the invention is within the scope of the invention.
As shown in figures 1-2, the high-temperature-resistant and corrosion-resistant Isa furnace smelting spray gun has high-temperature corrosion resistance and creep resistance, and is cast by one or more composite alloy materials of iron-based ODS alloy, nickel-based ODS alloy or cobalt-based ODS alloy.
The iron-based ODS alloy material is FeCrAl-xY2O3，FeCrAl-xHfO2(ii) a The nickel-based ODS alloy is NiCoCrAl-xY2O3，NiCoCrAl-xHfO2(ii) a The cobalt-based ODS alloy is CoNiCrAlTaW-xY2O3、CoNiCrAlTaW-xHfO2、CoNiCrAl-xY2O3、CoNiCrAlY-xHfO2、CoNiCrAlLaHf-xY2O3Or CoNiCrAlLaY-xHfO2(ii) a Wherein Y is2O3And HfO2The mass ratio content x is controlled to be 0.1-2.
The mass ratio content of Y and Hf in the ODS alloy is controlled to be 0.1-1 respectively.
The preparation method of the high-temperature-resistant corrosion-resistant smelting alloy spray gun comprises the steps of smelting and casting, polishing treatment and oxidation treatment, and specifically comprises the following steps:
(1) smelting and casting: smelting by using a vacuum induction furnace, putting the alloy with the process formula into the smelting furnace, and casting a gun body after the materials are fully molten;
(2) polishing treatment: and (3) grinding and polishing the cast gun body, wherein the roughness of the treated gun body meets the technical requirements.
(3) Oxidation treatment: and carrying out oxidation regulation and control treatment on the polished spray gun body to form an oxidation film with uniform thickness on the surface of the spray gun body.
Controlling the smelting vacuum degree to be 1 x 10 in the step (1)-5Pa~1×10-3Pa; the casting thickness of the gun body is 5-30 mm.
The roughness of the polished gun body in the step (2) is controlled to be Ra1.6-Ra12.5.
Oxidizing by using oxyacetylene flame in the step (3), wherein the ratio of acetylene gas to oxygen is 1: 1-1: 2, and the treatment area is 3-10 min/cm2。
The ratio of acetylene gas to oxygen gas in the oxidation treatment in the step (3) is 1: 1-1: 2, and the treatment area is 3-10 min/cm2. And forming an oxide film with the thickness of 1-100 mu m after the oxidation treatment, wherein the oxide film is especially an aluminum oxide layer, and the bonding strength of the aluminum oxide layer and the alloy matrix is not lower than 25 MPa.
In the step (3), CO is required to be introduced into a regulation and control area2And (4) protective gas.
The CO in the step (3)2The flow rate of the protective gas is 0.5-8.0L/min.
The components of the alloy are determined according to the using temperature of the gun body, the type of the alloy to be smelted and the loading time of fuel gas.
The Isa smelting gun body can be integrally prepared from the alloy, and the alloy can be used only at the lower half part of the gun body to prepare composite gun bodies of different alloys so as to save cost or reduce the weight of a spray gun.
Example 1
The casting material used in this example was FeCrAl-0.1Y2O3(mass ratio) alloy. The thickness of the cast gun body is 5mm, and the vacuum degree in the casting process should be controlled at 1X 10-3Pa or less. After the casting is finished, the gun body is ground and polished, and the roughness of the gun body is controlled to be Ra1.6.
For FeCrAl-0.1Y after grinding2O3Performing novel oxidation regulation and control treatment on the alloy gun body by using oxyacetylene flame, wherein the ratio of acetylene gas to oxygen is 1:1, the treatment time is 3min per square centimeter area, and simultaneously introducing CO into a regulation and control area2The flow rate of the gas was 0.5L/min. The surface of the gun body which is treated by the novel oxidation regulation and control generates an alumina layer with the thickness of 5 mu m (as shown in figure 2), and the bonding strength between the alumina layer and the alloy matrix reaches 30 MPa.
Example 2
The casting material used in this example was FeCrAl-0.1HfO2(mass ratio) alloy. The thickness of the cast gun body is 10mm, and the vacuum degree in the casting process should be controlled at 8X 10-4Pa or less. After the casting is finished, the gun body is ground and polished, and the roughness of the gun body is controlled to be Ra3.2.
For FeCrAl-0.1HfO after grinding2Performing novel oxidation regulation and control treatment on the alloy gun body by using oxyacetylene flame, wherein the ratio of acetylene gas to oxygen is 1:1.2, the treatment time is 5min per square centimeter area, and simultaneously introducing CO into a regulation and control area2The flow rate of the gas was 0.7L/min. The surface of the gun body after the novel oxidation regulation and control treatment generates a layer of alumina layer with the diameter of 1 mu m, and the bonding strength of the oxide layer and the alloy matrix reaches 25 MPa.
Example 3
The casting material used in this example was NiCoCrAl-1.5Y2O3(mass ratio) alloy. The thickness of the cast gun body is 20mm, and the vacuum degree in the casting process should be controlled at 6.5X 10-4Pa or less. After the casting is finished, the gun body is ground and polished, and the roughness of the gun body is controlled to be Ra6.3.
For NiCoCrAl-1.5Y after grinding2O3Performing novel oxidation regulation and control treatment on the alloy gun body by using oxyacetylene flame, wherein the ratio of acetylene gas to oxygen is 1:1.3, the treatment time is 4.5min per square centimeter area, and simultaneously introducing CO into a regulation and control area2The flow rate of the gas was 3.6L/min. The surface of the gun body after the novel oxidation regulation and control treatment generates a 20-micron aluminum oxide layer, and the bonding strength of the aluminum oxide layer and the alloy matrix reaches 37 MPa.
Example 4
The casting material used in this example was NiCoCrAl-1.5HfO2(mass ratio) alloy. The thickness of the cast gun body is 30mm, and the vacuum degree in the casting process should be controlled at 1.8X 10-5Pa or less. After the casting is finished, the gun body is ground and polished, and the roughness of the gun body is controlled to be Ra12.5.
For NiCoCrAl-1.5HfO after grinding2Novel oxidation regulation and control of alloy gun bodyTreating with oxyacetylene flame at a ratio of acetylene gas to oxygen of 1:1.17 for 8min per square centimeter, and introducing CO into the control region2The flow rate of the gas was 7.5L/min. The surface of the gun body which is subjected to the novel oxidation regulation and control treatment generates a 27-micron aluminum oxide layer, and the bonding strength of the aluminum oxide layer and the alloy matrix reaches 44 MPa.
Example 5
The casting material used in this example was CoNiCrAlTaW-2Y2O3(mass ratio) alloy. The thickness of the cast gun body is 15mm, and the vacuum degree in the casting process should be controlled at 5.5X 10-4Pa or less. After the casting is finished, the gun body is ground and polished, and the roughness of the gun body is controlled to be Ra3.2.
For CoNiCrAlTaW-2Y after grinding2O3Performing novel oxidation regulation and control treatment on the alloy gun body by using oxyacetylene flame, wherein the ratio of acetylene gas to oxygen is 1:1.6, the treatment time is 10min per square centimeter area, and simultaneously introducing CO into a regulation and control area2The flow rate of the gas was 4.8L/min. The surface of the gun body after the novel oxidation regulation and control treatment generates a layer of alumina layer with the diameter of 19 mu m, and the bonding strength of the oxide layer and the alloy matrix reaches 42 MPa.
Example 6
The casting material used in this example was CoNiCrAlTaW-1.4HfO2(mass ratio) alloy. The thickness of the cast gun body is 20mm, and the vacuum degree in the casting process should be controlled at 7X 10-5Pa or less. After the casting is finished, the gun body is ground and polished, and the roughness of the gun body is controlled to be Ra6.3.
For CoNiCrAlTaW-1.4HfO after grinding2Performing novel oxidation regulation and control treatment on the alloy gun body by using oxyacetylene flame, wherein the ratio of acetylene gas to oxygen is 1:1.2, the treatment time is 6min per square centimeter area, and simultaneously introducing CO into a regulation and control area2The flow rate of the gas was 6.5L/min. The surface of the gun body after the novel oxidation regulation and control treatment generates a 17-micron aluminum oxide layer, and the bonding strength of the aluminum oxide layer and the alloy matrix reaches 36 MPa.
Example 7
The casting material used in this example was CoNiCrAl-0.8Y2O3(mass ratio) alloy. The thickness of the cast gun body is 15mm, and the vacuum degree in the casting process should be controlled at 6.7X 10-5Pa or less. After the casting is finished, the gun body is ground and polished, and the roughness of the gun body is controlled to be Ra12.5.
For CoNiCrAl-0.8Y after grinding2O3Performing novel oxidation regulation and control treatment on the alloy gun body by using oxyacetylene flame, wherein the ratio of acetylene gas to oxygen is 1:1.4, the treatment time is 8min per square centimeter area, and simultaneously introducing CO into a regulation and control area2The flow rate of the gas was 7.7L/min. The surface of the gun body which is subjected to the novel oxidation regulation and control treatment generates a layer of aluminum oxide layer with the thickness of 13 mu m, and the bonding strength of the oxide layer and the alloy matrix reaches 47 MPa.
Example 8
The casting material used in this example was CoNiCrAlY-1.3HfO2(mass ratio) the alloy wherein the content mass ratio of the element Y is 0.1. The thickness of the cast gun body is 24mm, and the vacuum degree in the casting process should be controlled at 9X 10-4Pa or less. After the casting is finished, the gun body is ground and polished, and the roughness of the gun body is controlled to be Ra12.5.
For CoNiCrAl0.1Y-1.3HfO after grinding2Performing novel oxidation regulation and control treatment on the alloy gun body by using oxyacetylene flame, wherein the ratio of acetylene gas to oxygen is 1:1.6, the treatment time is 10min per square centimeter area, and simultaneously introducing CO into a regulation and control area2The flow rate of the gas was 4.7L/min. The surface of the gun body after the novel oxidation regulation and control treatment generates a layer of 30 mu m aluminum oxide layer, and the bonding strength of the oxide layer and the alloy matrix reaches 26 MPa.
Example 9
The casting material used in this example was CoNiCrAlLaHf-0.75Y2O3(mass ratio) alloy in which the content mass ratio of the La element is 1. The thickness of the cast gun body is 28mm, and the vacuum degree in the casting process should be controlled at 8.5X 10-5Pa or less. After casting, the gun body is ground and polished, and the roughness of the gun body is controlledAt Ra1.6.
For CoNiCrAlLa1Hf-0.75Y after having been ground2O3Performing novel oxidation regulation and control treatment on the alloy gun body by using oxyacetylene flame, wherein the ratio of acetylene gas to oxygen is 1:1.65, the treatment time is 4min per square centimeter area, and simultaneously introducing CO into a regulation and control area2The flow rate of the gas is 2L/min. The surface of the gun body after the novel oxidation regulation and control treatment generates a layer of alumina layer with the thickness of 14 mu m, and the bonding strength of the oxide layer and the alloy matrix reaches 33 MPa.
Example 10
The casting material used in this example was CoNiCrAlLaY-1.7HfO2(mass ratio) the alloy wherein the content mass ratio of the element Y is 0.5. The thickness of the cast gun body is 22mm, and the vacuum degree of the casting process should be controlled at 7X 10-5Pa or less. After the casting is finished, the gun body is ground and polished, and the roughness of the gun body is controlled to be Ra6.3.
For CoNiCrAlLa0.5Y-1.7HfO after grinding2Performing novel oxidation regulation and control treatment on the alloy gun body by using oxyacetylene flame, wherein the ratio of acetylene gas to oxygen is 1:1, the treatment time is 8min per square centimeter area, and simultaneously introducing CO into a regulation and control area2The flow rate of the gas was 4.7L/min. The surface of the gun body after the novel oxidation regulation and control treatment generates a layer of alumina layer with the thickness of 27 mu m, and the bonding strength of the oxide layer and the alloy matrix reaches 29 MPa.
Example 11
The casting material used in this example was CoNiCrAl-0.6Y2O3And CoNiCrAlTaW-1.4HfO2(mass ratio) the alloys were mixed in a mass ratio of 1:1. The thickness of the cast gun body is 18mm, and the vacuum degree in the casting process should be controlled at 6.5X 10-4Pa or less. After the casting is finished, the gun body is ground and polished, and the roughness of the gun body is controlled to be Ra1.6.
For CoNiCrAl-0.6Y after grinding2O3And CoNiCrAlTaW-1.4HfO2Performing novel oxidation regulation and control treatment on the alloy gun body by using oxyacetylene flame, wherein the ratio of acetylene gas to oxygen is 1:1.55, and the treatment time is per square meterThe square centimeter area is 9min, and CO is introduced into the regulation area2The flow rate of the gas was 4.5L/min. The surface of the gun body after the novel oxidation regulation and control treatment generates a 9-micron aluminum oxide layer, and the bonding strength of the aluminum oxide layer and the alloy matrix reaches 45 MPa.
Claims (10)
1. The high-temperature-resistant corrosion-resistant Isa smelting spray gun is characterized by having high-temperature corrosion resistance and creep resistance and being cast by one or more composite alloy materials of iron-based ODS alloy, nickel-based ODS alloy or cobalt-based ODS alloy.
2. The high temperature and corrosion resistant smelt spray gun according to claim 1, wherein the iron based ODS alloy material is FeCrAl-xY2O3，FeCrAl- xHfO2(ii) a The nickel-based ODS alloy is NiCoCrAl-xY2O3，NiCoCrAl-xHfO2(ii) a The cobalt-based ODS alloy is CoNiCrAlTaW-xY2O3、CoNiCrAlTaW-xHfO2、CoNiCrAl-xY2O3、CoNiCrAlY-xHfO2、CoNiCrAlLaHf-xY2O3Or CoNiCrAlLaY-xHfO2(ii) a Wherein Y is2O3And HfO2The mass ratio content x is controlled to be 0.1-2.
3. The high-temperature-resistant and corrosion-resistant smelting lance as claimed in claim 2, wherein the mass ratio of Y to Hf in the ODS alloy is controlled to 0.1-1.
4. The preparation method of the high-temperature-resistant corrosion-resistant molten alloy spray gun according to any one of claims 1, 2 or 3, which comprises the steps of smelting and casting, polishing treatment and oxidation treatment, and specifically comprises the following steps:
(1) smelting and casting: smelting by using a vacuum induction furnace, putting the alloy with the process formula into the vacuum induction smelting furnace, and casting a gun body after the materials are fully molten;
(2) polishing treatment: grinding and polishing the cast gun body to meet the technical requirements;
(3) oxidation treatment: and carrying out oxidation regulation and control treatment on the polished spray gun body to form an oxidation film with uniform thickness on the surface of the spray gun body.
5. The method for producing a high-temperature-resistant and corrosion-resistant molten alloy injection lance according to claim 4, wherein the degree of vacuum in the step (1) is controlled to be 1 x 10-5Pa~1×10-3Pa; the casting thickness of the gun body is 5-30 mm.
6. The method for preparing the high-temperature-resistant corrosion-resistant smelting alloy spray gun according to the claim 4, characterized in that the roughness of the gun body after polishing treatment in the step (2) is controlled to be Ra1.6-Ra12.5.
7. The preparation method of the high-temperature-resistant corrosion-resistant smelted alloy spray gun according to claim 4, characterized in that in the step (3), oxyacetylene flame is used for oxidation treatment, the ratio of acetylene gas to oxygen is 1: 1-1: 2, and the treatment area is 3-10 min/cm2。
8. The method for preparing the high-temperature-resistant corrosion-resistant molten alloy spray gun according to claim 4 or 7, wherein an oxide film with the thickness of 1-100 μm is formed after the oxidation treatment in the step (3), the oxide film is especially an aluminum oxide layer, and the bonding strength between the aluminum oxide layer and the alloy matrix is not lower than 25 MPa.
9. The method for preparing the high temperature and corrosion resistant molten alloy spray gun according to claim 4 or 7, wherein in the step (3), CO is required to be introduced into a regulation area2And (4) protective gas.
10. The method of making a refractory and corrosion-resistant molten alloy lance defined in claim 9 wherein the CO of step (3)2The flow rate of the protective gas is 0.5-8.0L/min.
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| CN1281053A (en) * | 2000-07-27 | 2001-01-24 | 钢铁研究总院 | Process for preparing ceramic-phase diffusion enhanced alloy and particle enhanced metal-base composition |
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| CN1281053A (en) * | 2000-07-27 | 2001-01-24 | 钢铁研究总院 | Process for preparing ceramic-phase diffusion enhanced alloy and particle enhanced metal-base composition |
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| CN110863153A (en) * | 2019-12-05 | 2020-03-06 | 中国核动力研究设计院 | Preparation method of FeCrAl-based ODS alloy material for advanced nuclear fuel element cladding |
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