CN111748762A - Iron-chromium-aluminum alloy wire with oxide film, and preparation method, application and preparation device thereof - Google Patents
Iron-chromium-aluminum alloy wire with oxide film, and preparation method, application and preparation device thereof Download PDFInfo
- Publication number
- CN111748762A CN111748762A CN202010549696.9A CN202010549696A CN111748762A CN 111748762 A CN111748762 A CN 111748762A CN 202010549696 A CN202010549696 A CN 202010549696A CN 111748762 A CN111748762 A CN 111748762A
- Authority
- CN
- China
- Prior art keywords
- chromium
- iron
- aluminum alloy
- oxide film
- alloy wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention provides an iron-chromium-aluminum alloy wire with an oxide film, and a preparation method, application and a preparation device thereof2O3And Fe2O3The composite oxide of (3). The oxide film has high density, can be well wrapped on the surface of an iron-chromium-aluminum matrix, effectively avoids the problem of heating oxidation caused by using the oxide film as a resistance wire, prolongs the service life of the iron-chromium-aluminum alloy wire, has a quick service life of 120h at 1350 ℃, and is attractive and elegant; can also avoid the corrosion problem caused by long-term storage of bright iron-chromium-aluminum alloy wires.
Description
Technical Field
The invention belongs to the technical field of iron-chromium-aluminum alloy wire preparation, and particularly relates to an iron-chromium-aluminum alloy wire with an oxide film, and a preparation method, application and a preparation device thereof.
Background
The iron-chromium-aluminum alloy is used as a high-temperature-resistant alloy and has good oxidation resistance and creep resistance. The iron-chromium-aluminum alloy wire needs to be subjected to annealing heat treatment after being subjected to multi-pass drawing so as to eliminate residual stress and improve the service performance such as tensile strength. In order to ensure good oxidation resistance of the iron-chromium-aluminum alloy, a continuous annealing heat treatment process is mostly adopted, nitrogen-hydrogen mixed gas is adopted in the annealing process, and meanwhile, the flow of the nitrogen-hydrogen mixed gas is controlled, so that the iron-chromium-aluminum alloy wire is not oxidized in a high-temperature environment. The bright iron-chromium-aluminum alloy wire after continuous annealing treatment has bright and clean surface and can meet the use conditions of most customers.
The surface of the bright alloy wire is not oxidized, but in the using process, the bright iron-chromium-aluminum alloy serving as a high-temperature resistance material can be continuously heated at 800-1100 ℃, and the iron-chromium-aluminum alloy resistance wire can be subjected to oxidation reaction from outside to inside in the whole heating process, so that the creep resistance and the service life of the resistance wire are influenced to a certain extent.
Disclosure of Invention
The invention provides an iron-chromium-aluminum alloy wire with an oxide film, and a preparation method, application and a preparation device thereof, and aims to solve the technical problem of short service life caused by heating and oxidation in the use process of a bright iron-chromium-aluminum alloy wire.
In a first aspect, an embodiment of the present invention provides an iron-chromium-aluminum alloy wire with an oxide film, where the iron-chromium-aluminum alloy wire with an oxide film includes an iron-chromium-aluminum alloy substrate and an oxide film, the oxide film is coated on an outer side of the iron-chromium-aluminum alloy substrate, and the oxide film is a film containing Cr2O3And Fe2O3The composite oxide of (3).
Further, the oxide film is golden yellow, the thickness of the oxide film is 1-2 mu m, and the density of the oxide film is 5.2-5.5 g/cm3。
Further, the diameter of the iron-chromium-aluminum alloy matrix is 1.2-4.75 mm.
Further, the iron-chromium-aluminum alloy matrix comprises the following chemical components in percentage by mass: cr: 19.5-23.5%, Al: 5.0 to 6.5 percent, and the balance of Fe and inevitable impurities.
In a second aspect, the embodiment of the present invention provides a method for preparing an iron-chromium-aluminum alloy wire with an oxide film, where the method includes,
obtaining drawn iron-chromium-aluminum alloy wires;
and continuously annealing and cooling the drawn iron-chromium-aluminum alloy wire in an oxidizing atmosphere to form golden yellow oxides on the surface of the drawn iron-chromium-aluminum alloy wire, so as to obtain the iron-chromium-aluminum alloy wire with the oxide film.
Further, the oxidizing atmosphere is obtained by blowing air or oxygen, and when air is blown, the air flow is 3.5-4.5 m3Min; when oxygen is blown in, the flow rate of the oxygen is 0.7-1.0 m3/min。
Further, in the continuous annealing, the annealing temperature is 750-800 ℃, and the heat preservation time is 3-5 min.
Further, the cooling is water cooling, and the finishing temperature of the water cooling is 20-25 ℃.
In a third aspect, the embodiment of the invention provides an application of the above iron-chromium-aluminum alloy wire with the oxide film, and the iron-chromium-aluminum alloy wire with the oxide film is used for manufacturing a resistance wire.
In a fourth aspect, the embodiment of the invention provides a preparation device used in the preparation method of the iron-chromium-aluminum alloy wire with the oxide film, the device comprises a continuous annealing furnace and a blower, the continuous annealing furnace is provided with a conduit, an air inlet of the conduit is communicated with an air outlet of the blower, and an air inlet of the blower is communicated with an oxidizing gas source.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
the embodiment of the invention provides an iron-chromium-aluminum alloy wire with an oxide film and a preparation method, application and a preparation device thereof, wherein the iron-chromium-aluminum alloy wire with the oxide film comprises an iron-chromium-aluminum alloy matrix and the oxide film, the oxide film is coated on the outer side of the iron-chromium-aluminum alloy matrix, the oxide film has high density and can be well coated on the surface of the iron-chromium-aluminum matrix, the oxide film can block air from contacting with the iron-chromium-aluminum wire inside, the further oxidation of oxygen is prevented, the problem of heating oxidation caused when the iron-chromium-aluminum alloy wire is used as a resistance wire is effectively avoided, the service life of the iron-chromium-aluminum alloy wire is prolonged, the quick service life at 1350 ℃ can reach 120h at most, and the. Can also avoid the corrosion problem caused by long-term storage of bright iron-chromium-aluminum alloy wires.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is an iron-chromium-aluminum alloy wire with an oxide film prepared by an embodiment of the invention;
FIG. 2 is a graph of an iron-chromium-aluminum alloy wire having an oxide film prepared under natural air convection conditions of comparative example 1;
FIG. 3 is a bright iron-chromium-aluminum alloy wire prepared by a conventional process;
FIG. 4 is a device for manufacturing an iron-chromium-aluminum alloy wire with an oxide film according to the present invention;
FIG. 5 is a device for manufacturing bright iron-chromium-aluminum alloy wire by using a conventional process.
In fig. 4 and 5: 1-a ferro-chromium-aluminum alloy wire rod; 2-annealing furnace body; 3-a blower; 4-a conduit; 5-a water cooling device; 6-air blowing device.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments and examples, and the advantages and various effects of the present invention will be more clearly apparent therefrom. It will be understood by those skilled in the art that these specific embodiments and examples are for the purpose of illustrating the invention and are not to be construed as limiting the invention.
Throughout the specification, unless otherwise specifically noted, terms used herein should be understood as having meanings as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If there is a conflict, the present specification will control.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
In order to solve the technical problems, the embodiment of the invention provides the following general ideas:
in a first aspect, an embodiment of the present invention provides an iron-chromium-aluminum alloy wire with an oxide film, where the iron-chromium-aluminum alloy wire with an oxide film includes an iron-chromium-aluminum alloy substrate and an oxide film, the oxide film is coated on an outer side of the iron-chromium-aluminum alloy substrate, and the oxide film is a film containing Cr2O3And Fe2O3The composite oxide of (3).
Cr2O3And Fe2O3The oxide film of the composite oxide is coated on the surface of the iron-chromium-aluminum alloy matrix, specifically referring to fig. 1, (the actual color of the iron-chromium-aluminum alloy wire in fig. 1 is golden yellow), and the composite oxide has high compactness, can well prevent air from contacting with the iron-chromium-aluminum alloy wire inside, prevents oxygen from further oxidation, effectively avoids the problem of heating oxidation caused by using as a resistance wire, prolongs the service life of the iron-chromium-aluminum alloy wire, and is elegant in appearance. Can also avoid the corrosion problem caused by long-term storage of bright iron-chromium-aluminum alloy wires.
In the subsequent machining process of the iron-chromium-aluminum alloy wire with the oxide film, the extension rates of the oxide film and the internal iron-chromium-aluminum alloy wire are kept consistent, and the falling-off condition is avoided.
Further, the oxide film is golden yellow, the thickness of the oxide film is 1-2 mu m, and the density of the oxide film is 5.2-5.5 g/cm3。
The oxide film with a certain thickness can prevent oxygen and water in the air from entering the iron-chromium-aluminum alloy wire matrix, so that oxidation is avoided. The density of the oxide film is greater than that of the iron-chromium-aluminum alloy wire, so that the oxide film can be tightly combined with the iron-chromium-aluminum alloy matrix.
Further, the diameter of the iron-chromium-aluminum alloy matrix is 1.2-4.75 mm.
Further, the iron-chromium-aluminum alloy comprises the following chemical components in percentage by mass: cr: 19.5-23.5%, Al: 5.0 to 6.5 percent, and the balance of Fe and inevitable impurities.
In a second aspect, the embodiment of the present invention provides a method for preparing an iron-chromium-aluminum alloy wire with an oxide film, the method including,
s1, obtaining a drawn iron-chromium-aluminum alloy wire;
s2, continuously annealing and cooling the drawn iron-chromium-aluminum alloy wire in an oxidizing atmosphere to form golden yellow oxides on the surface of the drawn iron-chromium-aluminum alloy wire, so as to obtain the iron-chromium-aluminum alloy wire with the oxide film.
The iron-chromium-aluminum alloy has good oxidation resistance and creep resistance as a high-temperature-resistant alloy. The iron-chromium-aluminum alloy wire has a work hardening phenomenon after being drawn for multiple times, and needs to be subjected to annealing heat treatment to eliminate residual stress and improve the use performances such as tensile strength and the like.
Under the oxidizing atmosphere, the chromium element and the iron element in the iron-chromium-aluminum alloy respectively generate oxidation reaction with oxygen, and chemical reaction exists between the oxides to form a material containing Cr2O3And Fe2O3The oxide of the composite oxide of (4), which has a golden yellow color due to the presence of chromium and iron elements.
The traditional continuous annealing process is to introduce nitrogen-hydrogen mixed gas to ensure that the iron-chromium-aluminum finished wire is not oxidized in a high-temperature environment, the iron-chromium-aluminum alloy wire produced by the traditional annealing process has a bright and clean surface, but is easy to rust when stored in humid air for a long time, and the surface of the wire is oxidized and blackened under a continuous heating condition, so that the service life is shortened.
Further, the oxidizing atmosphere is obtained by blowing air or oxygen, and when air is blown, the air flow is 3.5-4.5 m3Min; when oxygen is blown in, the flow rate of the oxygen is 0.7-1.0 m3/min。
When the gas flow is too small, the oxidation is incomplete, the color difference exists on the appearance, and the service life is not uniform. The iron-chromium-aluminum alloy wire under the air natural convection condition can be seen in fig. 2 (fig. 2, the actual color of the iron-chromium-aluminum alloy wire is non-uniformly covered with golden yellow). When the gas flow is too large, energy waste is caused.
Further, in the continuous annealing, the annealing temperature is 750-800 ℃, and the heat preservation time is 3-5 min.
Controlling the continuous annealing temperature, on one hand, the work hardening can be removed; on the other hand, at the annealing temperature, the iron-chromium-aluminum alloy wire is reacted with oxygen to form an oxide film. The continuous annealing temperature is too high, the surface of the alloy wire is easy to cause overburning, the surface oxidation degree is higher, and compact Cr is removed2O3In addition, Al is easily formed2O3And Fe2O3The two oxides are loose and black, and are easy to fall off in the subsequent processing process, so that the surface quality and the mechanical property of the material are affected, the continuous annealing temperature is too low, the annealing temperature is insufficient, the stress release of the material during processing is incomplete, brittle fracture is easy to generate in the use process, the surface oxidation is incomplete, and the generated oxidation color is not uniform.
Further, the cooling is water cooling, and the finishing temperature of the water cooling is 20-25 ℃.
The water cooling has the function of rapidly cooling the material and preventing further growth of crystal grains and precipitated phases.
In a third aspect, the embodiment of the invention provides an application of the iron-chromium-aluminum alloy wire with the oxide film, and the iron-chromium-aluminum alloy wire with the oxide film is used for manufacturing a resistance wire.
As high temperature resistance material, can be at 800 ~ 1100 ℃ lower continuous heating, the iron chromium aluminum alloy silk that has the oxide film of this application, in the heating, because the guard action of oxide film, avoid iron chromium aluminum alloy and oxygen to take place oxidation reaction to can be by the emergence oxidation reaction of outside to inside when avoiding traditional bright iron chromium aluminum resistance wire heating, and then improve the creep resistance performance and the life of resistance wire.
In a fourth aspect, the embodiment of the invention provides a preparation device used in the preparation method of the iron-chromium-aluminum alloy wire with the oxide film, the device comprises a continuous annealing furnace and an air blower 3, the continuous annealing furnace is provided with a conduit 4, an air inlet of the conduit 4 is communicated with an air outlet of the air blower 3, and an air inlet of the air blower 3 is communicated with an oxidizing gas source.
FIG. 4 shows an apparatus for manufacturing Fe-Cr-Al alloy wire with oxide film according to the present invention, and with reference to FIG. 4, the continuous annealing furnace includes an annealing furnace body 2, a conduit 4 and a water cooling device 5. The bundled iron-chromium-aluminum alloy wire rod 1 is straightened by the unwinding device and then enters an annealing furnace through a wire conduit 4, continuous annealing is carried out at the temperature of 750-800 ℃ and at a certain linear speed, and the heat preservation time is guaranteed to be 3-6 min. After the continuous annealing is finished, the wire rod enters the water cooling device 5 along the wire pipe 4 for cooling, and finally is wound into a bundle through the winding device. Throughout the process, the conduit 3 communicates with the blower 3. In a high temperature state, the surface of the wire rod is oxidized in the conduit 4 by the oxidizing gas entering the conduit 4, and an oxide film is formed.
Fig. 5 shows a manufacturing apparatus of bright iron-chromium-aluminum alloy wire according to the conventional process, and it can be known from fig. 5 that, according to the conventional process, a blowing device 6 is used to blow in a nitrogen-hydrogen mixed gas into a conduit 4 communicated with the blowing device, so as to control the wire rod in the conduit not to be oxidized.
The continuous annealing furnace is the prior art, and is not limited herein, and any continuous annealing furnace that can realize the functions of the present application can be used in the present application.
The iron-chromium-aluminum alloy wire with an oxide film of the present application, and a method, an application, and an apparatus for manufacturing the same will be described in detail with reference to examples, comparative examples, and experimental data.
Example 1
Example 1 provides an iron-chromium-aluminum alloy wire having an oxide film and a method for producing the same, wherein the chemical composition of the iron-chromium-aluminum alloy wire is shown in table 1 (balance Fe and unavoidable impurities, wherein Ni impurity is 0.06% or less), and the iron-chromium-aluminum alloy wire having a diameter of 1.5mm after drawing the composition shown in table 1 is continuously subjected to air blowingAnnealing with a flow rate of 3.6m of blowing air3And/min, wherein the continuous annealing temperature is 760 ℃, the heat preservation time is 3min, water cooling is carried out after heat preservation, and the water cooling finishing temperature is 20 ℃.
Example 2
Example 2 provides an iron-chromium-aluminum alloy wire having an oxide film and a method for producing the same, wherein the chemical composition of the iron-chromium-aluminum alloy wire is shown in table 1 (balance Fe and unavoidable impurities, wherein Ni impurity is 0.06% or less), and the iron-chromium-aluminum alloy wire having a diameter of 1.8mm after drawing, the composition of which is shown in table 1, is continuously annealed in an air blowing atmosphere, and the flow rate of blowing air is 4.2m3And/min, wherein the continuous annealing temperature is 780 ℃, the heat preservation time is 4min, water cooling is carried out after heat preservation, and the water cooling finishing temperature is 23 ℃.
Example 3
Example 3 provides an iron-chromium-aluminum alloy wire having an oxide film and a method for producing the same, wherein the chemical composition of the iron-chromium-aluminum alloy wire is shown in table 1 (balance Fe and unavoidable impurities, wherein Ni impurity is 0.06% or less), and the iron-chromium-aluminum alloy wire having a diameter of 2.5mm after drawing, the composition of which is shown in table 1, is continuously annealed in an air blowing atmosphere, and the flow rate of blowing air is 3.9m3And/min, wherein the continuous annealing temperature is 790 ℃, the heat preservation time is 5min, water cooling is carried out after heat preservation, and the water cooling finishing temperature is 25 ℃.
Example 4
The examples provide an iron-chromium-aluminum alloy wire having an oxide film and a method for manufacturing the same, wherein the chemical composition of the iron-chromium-aluminum alloy wire is shown in table 1 (balance Fe and unavoidable impurities, wherein Ni impurity is 0.06% or less), and the iron-chromium-aluminum alloy wire having a diameter of 3.8mm after drawing, the composition of which is shown in table 1, is continuously annealed in an atmosphere into which oxygen is blown, and the flow rate of the blown oxygen is 0.8m3And/min, wherein the continuous annealing temperature is 800 ℃, the heat preservation time is 3.5min, water cooling is carried out after heat preservation, and the water cooling finishing temperature is 25 ℃.
Example 5
The embodiment provides an iron-chromium-aluminum alloy wire with an oxide film and a preparation method thereof, wherein the chemical composition of the iron-chromium-aluminum alloy wire is shown in Table 1 (the balance is F)e and unavoidable impurities, wherein Ni impurity is 0.06%) of the alloy wire, the drawn wire of which the diameter is 4.25mm and the composition of which is shown in Table 1 is continuously annealed in an atmosphere of oxygen gas at a flow rate of 1.0m3And/min, wherein the continuous annealing temperature is 750 ℃, the heat preservation time is 4.5min, water cooling is carried out after heat preservation, and the water cooling finishing temperature is 25 ℃.
Example 6
The examples provide an iron-chromium-aluminum alloy wire having an oxide film and a method for manufacturing the same, wherein the chemical composition of the iron-chromium-aluminum alloy wire is shown in table 1 (balance Fe and unavoidable impurities, wherein Ni impurity is 0.06% or less), and the iron-chromium-aluminum alloy wire having a diameter of 4.5mm after drawing, the composition of which is shown in table 1, is continuously annealed in an atmosphere into which oxygen is blown, and the flow rate of the blown oxygen is 0.9m3And/min, the continuous annealing temperature is 770 ℃, the heat preservation time is 4.5min, water cooling is carried out after heat preservation, and the water cooling finishing temperature is 25 ℃.
Comparative example 1
In order to examine the influence of the blown air flow rate, comparative example 1 was conducted by continuous annealing using a natural convection method of air without blowing air in the continuous annealing, which is different from example 1 with reference to example 1.
Comparative example 2
Comparative example 2 provides a conventional bright annealed iron-chromium-aluminum alloy wire, in the continuous annealing process, nitrogen-hydrogen mixed gas is blown in by using the blowing device shown in figure 4, and the flow rate is 3-5 m3Min, the bright annealed iron-chromium-aluminum alloy wire after treatment is shown in figure 3.
Comparative example 3
1) Adopting a pretreatment process: after deformation processing, the Fe-Cr-Al alloy is quickly heated to a hot alkali solution with the temperature of more than 80 ℃ and soaked for 1 to 1.5 hours; after soaking, flushing the surface lubricant with high-pressure hot water at the temperature of more than 80 ℃, quickly adding 10-15% nitric acid solution for passivation for 5-10 minutes, then flushing with high-pressure hot water at the temperature of more than 80 ℃, quickly loading the frame and charging, wherein the charging temperature is 840 +/-10 ℃;
2) the charging amount of the heat treatment is controlled to be one third to one half of the normal charging amount;
3) when charging, the distance between the iron-chromium-aluminum material at the bottommost part and the furnace bottom is more than 20cm, and the iron-chromium-aluminum material is kept in a loose state;
4) and (3) adopting a pit type heat treatment furnace, keeping the temperature at 840 +/-10 ℃ for 2-3 hours, and cooling the furnace by water after discharging to obtain the blue iron-chromium-aluminum product with a layer of uniform blue oxide film on the surface.
The iron-chromium-aluminum alloy wires with oxide films prepared in examples 1 to 6, comparative example 1 and comparative example 3 were subjected to oxide film composition detection using a scanning electron microscope device as shown in table 1, and oxide film thickness and density detection as shown in table 2. The fracture time of the wire is measured by continuously heating the wire at 1350 ℃ by using a life tester, the fracture time is the quick life of the iron-chromium-aluminum alloy wire, the longer the quick life is, the longer the service life of the surface iron-chromium-aluminum alloy wire is, and the detection results are shown in table 3. The mechanical properties were measured using a tensile test machine, and the results are shown in table 3.
TABLE 1
| Numbering | Cr | Al |
| Example 1 | 24％ | 6.0％ |
| Example 2 | 21％ | 6.0％ |
| Example 3 | 25％ | 5.3％ |
| Example 4 | 23％ | 5.0％ |
| Example 5 | 19％ | 5.0％ |
| Example 6 | 22 | 5.5 |
| Comparative example 1 | 19％ | 3.0％ |
| Comparative example 2 | 25％ | 5.0％ |
| Comparative example 3 | 21％ | 6.3％ |
TABLE 2
TABLE 3
As can be seen from table 1, it is,
the iron-chromium-aluminum alloy wires with the oxide films in the embodiments 1 to 6 have the tensile strength of 600-680 MPa and the elongation of 15-18%, and are at the same level as the conventional bright iron-chromium-aluminum alloy wire (comparative example 2), so that the oxide films do not affect the mechanical properties of the iron-chromium-aluminum alloy wires. The oxide films of examples 1 to 6 had Cr as a component2O3And Fe2O3The composite oxide is golden yellow, bright in color and uniform in wrapping, and the quick service life of the composite oxide is 108-120 h at 1350 ℃.
Comparative example 1 in order to examine the influence of the blowing air flow rate, the oxide film of the Fe-Cr-Al alloy wire was Cr2O3And Fe2O3The composite oxide is not uniformly coated, the corrosion problem is easy to occur, the tensile strength is 580MPa, and the quick service life is 96h at 1350 ℃, which is lower than that of the composite oxide.
Comparative example 2 is a conventional bright annealed fe-cr-al alloy wire, free of oxide film, having a tensile strength of 650MPa and an elongation of 18%, at the same level as the present application. The fast life is 90h at 1350 ℃, which is lower than the application.
Comparative example 3 is an iron-chromium-aluminum alloy wire having a blue oxide film of Fe2O3·nH2O, completely different from the oxide film composition of the present application; the tensile strength of the iron-chromium-aluminum alloy wire is 680MPa, the elongation is 18%, the quick service life is 120h, and the iron-chromium-aluminum alloy wire and the quick service life are in the same level.
According to the results, the iron-chromium-aluminum alloy wires prepared in the examples 1 to 6 of the present application have the same mechanical property level as the bright annealed alloy wires, but the service life of the iron-chromium-aluminum alloy wires is longer than that of the bright annealed alloy wires, and the service life is prolonged.
The invention provides an iron-chromium-aluminum alloy wire with an oxide film, and a preparation method, application and a preparation device thereof, and the iron-chromium-aluminum alloy wire at least has the following advantages:
(1) the cladding has higher compactedness at iron chromium aluminum alloy base member's surface oxide film, and can be even adhere to on iron chromium aluminum wire surface, separation air and the contact of inside iron chromium aluminum alloy wire that can be fine prevent oxygen further oxidation, effectively avoid the heating oxidation problem that leads to when using as the resistance wire, prolonged iron chromium aluminum alloy wire life, and elegant appearance.
(2) Can avoid the corrosion problem caused by long-term storage of bright iron-chromium-aluminum alloy wires.
(3) The extension rate of the oxide film is consistent with that of the internal iron-chromium-aluminum alloy wire, and the falling-off condition can not occur in the machining process.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The iron-chromium-aluminum alloy wire with the oxide film is characterized by comprising an iron-chromium-aluminum alloy matrix and the oxide film, wherein the oxide film is coated on the outer side of the iron-chromium-aluminum alloy matrix and contains Cr2O3And Fe2O3The composite oxide of (3).
2. Root of herbaceous plantThe Fe-Cr-Al alloy wire with the oxide film according to claim 1, wherein the oxide film is golden yellow, the thickness of the oxide film is 1-2 μm, and the density of the oxide film is 5.2-5.5 g/cm3。
3. The iron-chromium-aluminum alloy wire with the oxide film according to claim 1, wherein the diameter of the iron-chromium-aluminum alloy matrix is 1.2-4.75 mm.
4. The ferrochromium-aluminum alloy surface treatment method according to claim 1, wherein the ferrochromium-aluminum alloy matrix comprises the following chemical components in percentage by mass: cr: 19.5-23.5%, Al: 5.0 to 6.5 percent, and the balance of Fe and inevitable impurities.
5. The method for preparing the iron-chromium-aluminum alloy wire with the oxide film according to any one of claims 1 to 4, wherein the method comprises the steps of,
obtaining drawn iron-chromium-aluminum alloy wires;
and continuously annealing and cooling the drawn iron-chromium-aluminum alloy wire in an oxidizing atmosphere to form golden yellow oxides on the surface of the drawn iron-chromium-aluminum alloy wire, so as to obtain the iron-chromium-aluminum alloy wire with the oxide film.
6. The method for preparing an iron-chromium-aluminum alloy wire with an oxide film according to claim 5, wherein the oxidizing atmosphere is obtained by blowing air or oxygen, and when air is blown, the air flow is 3.5-4.5 m3Min; when oxygen is blown in, the flow rate of the oxygen is 0.7-1.0 m3/min。
7. The method for preparing the iron-chromium-aluminum alloy wire with the oxide film according to claim 5, wherein in the continuous annealing, the annealing temperature is 750-800 ℃, and the holding time is 3-5 min.
8. The method for preparing the iron-chromium-aluminum alloy wire with the oxide film according to claim 5, wherein the cooling is water cooling, and the water cooling finishing temperature is 20-25 ℃.
9. The use of the iron-chromium-aluminum alloy wire with the oxide film as claimed in any one of claims 1 to 4, characterized in that the iron-chromium-aluminum alloy wire with the oxide film is used for manufacturing a resistance wire.
10. The manufacturing device for the manufacturing method of the iron-chromium-aluminum alloy wire with the oxide film according to any one of claims 5 to 8, wherein the device comprises a continuous annealing furnace and a blower, the continuous annealing furnace is provided with a conduit, an air inlet of the conduit is communicated with an air outlet of the blower, and an air inlet of the blower is communicated with an oxidizing gas source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010549696.9A CN111748762B (en) | 2020-06-16 | 2020-06-16 | Iron-chromium-aluminum alloy wire with oxide film, and preparation method, application and preparation device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010549696.9A CN111748762B (en) | 2020-06-16 | 2020-06-16 | Iron-chromium-aluminum alloy wire with oxide film, and preparation method, application and preparation device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111748762A true CN111748762A (en) | 2020-10-09 |
| CN111748762B CN111748762B (en) | 2022-09-23 |
Family
ID=72674760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010549696.9A Active CN111748762B (en) | 2020-06-16 | 2020-06-16 | Iron-chromium-aluminum alloy wire with oxide film, and preparation method, application and preparation device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111748762B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981420A (en) * | 2021-02-07 | 2021-06-18 | 北京首钢吉泰安新材料有限公司 | Iron-chromium-aluminum alloy with pink oxide film, preparation method thereof and annealing furnace |
| CN114752738A (en) * | 2022-05-07 | 2022-07-15 | 常州市捷祥电热电器有限公司 | Method for preparing iron-chromium-aluminum with larger resistance |
| CN114855100A (en) * | 2022-05-11 | 2022-08-05 | 烟台卓越新能源科技股份有限公司 | Electric heating wire pretreatment method and continuous pretreatment device |
| CN115141983A (en) * | 2022-07-15 | 2022-10-04 | 丹阳市海威电热合金有限公司 | Preparation method of high-toughness iron-chromium-aluminum electrothermal alloy |
| CN115338277A (en) * | 2022-08-09 | 2022-11-15 | 北京首钢吉泰安新材料有限公司 | Iron-chromium-aluminum alloy material with bright gold yellow surface and preparation method thereof |
| CN116871343A (en) * | 2023-07-10 | 2023-10-13 | 北京首钢吉泰安新材料有限公司 | Iron-chromium-aluminum golden silk finished product and preparation method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5531837A (en) * | 1993-03-25 | 1996-07-02 | Ngk Insulators, Ltd. | Method for increasing oxidation resistance of Fe-Cr-Al alloy |
| CN1138102A (en) * | 1995-03-23 | 1996-12-18 | 新日本制铁株式会社 | Continuous annealing furnace |
| CN1346301A (en) * | 1999-02-09 | 2002-04-24 | 克里萨里斯技术公司 | Method of manufacturing metallic products such as sheet by cold working and flash annealing |
| US20040247494A1 (en) * | 2003-03-24 | 2004-12-09 | Engineered Materials Solutions, Inc. | In-situ diffusion alloying and pre-oxidation annealing in air of FeCrAI alloy catalytic converter material |
| CN102517503A (en) * | 2012-01-12 | 2012-06-27 | 丹阳市华龙特钢有限公司 | Iron-chromium-aluminum alloy with high plasticity and long service life |
| CN204148280U (en) * | 2014-10-20 | 2015-02-11 | 鹰潭盛发铜业有限公司 | A kind of COPPER WIRES PRODUCTION equipment |
| CN104513929A (en) * | 2013-09-29 | 2015-04-15 | 上海埃鲁秘工业炉制造有限公司 | Resistance wire alloy and pre-oxidation treatment method |
| JP2018070897A (en) * | 2015-03-02 | 2018-05-10 | 国立大学法人北海道大学 | Iron-chromium-aluminum oxide-dispersed strengthened steel and method for producing the same |
| CN109825777A (en) * | 2019-04-01 | 2019-05-31 | 江苏兄弟合金有限公司 | A kind of preparation method of high tenacity Fe-based perovskite-like oxide |
| CN110453170A (en) * | 2019-09-10 | 2019-11-15 | 常州大学 | A method of compact oxidation layer is formed in Fe-Cr-Si system alloy surface |
| CN111057937A (en) * | 2019-12-31 | 2020-04-24 | 江苏新华合金有限公司 | Electrothermal alloy iron-chromium-aluminum wire material and preparation method thereof |
-
2020
- 2020-06-16 CN CN202010549696.9A patent/CN111748762B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5531837A (en) * | 1993-03-25 | 1996-07-02 | Ngk Insulators, Ltd. | Method for increasing oxidation resistance of Fe-Cr-Al alloy |
| CN1138102A (en) * | 1995-03-23 | 1996-12-18 | 新日本制铁株式会社 | Continuous annealing furnace |
| CN1346301A (en) * | 1999-02-09 | 2002-04-24 | 克里萨里斯技术公司 | Method of manufacturing metallic products such as sheet by cold working and flash annealing |
| US20040247494A1 (en) * | 2003-03-24 | 2004-12-09 | Engineered Materials Solutions, Inc. | In-situ diffusion alloying and pre-oxidation annealing in air of FeCrAI alloy catalytic converter material |
| CN102517503A (en) * | 2012-01-12 | 2012-06-27 | 丹阳市华龙特钢有限公司 | Iron-chromium-aluminum alloy with high plasticity and long service life |
| CN104513929A (en) * | 2013-09-29 | 2015-04-15 | 上海埃鲁秘工业炉制造有限公司 | Resistance wire alloy and pre-oxidation treatment method |
| CN204148280U (en) * | 2014-10-20 | 2015-02-11 | 鹰潭盛发铜业有限公司 | A kind of COPPER WIRES PRODUCTION equipment |
| JP2018070897A (en) * | 2015-03-02 | 2018-05-10 | 国立大学法人北海道大学 | Iron-chromium-aluminum oxide-dispersed strengthened steel and method for producing the same |
| CN109825777A (en) * | 2019-04-01 | 2019-05-31 | 江苏兄弟合金有限公司 | A kind of preparation method of high tenacity Fe-based perovskite-like oxide |
| CN110453170A (en) * | 2019-09-10 | 2019-11-15 | 常州大学 | A method of compact oxidation layer is formed in Fe-Cr-Si system alloy surface |
| CN111057937A (en) * | 2019-12-31 | 2020-04-24 | 江苏新华合金有限公司 | Electrothermal alloy iron-chromium-aluminum wire material and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| MARINA FUSER PILLIS等: "Effect of Pre-oxidation on High Temperature Sulfidation Behavior of FeCr and FeCrAl Alloys", 《MATERIALS RESEARCH》 * |
| RAUL B. REBAK等: "Oxidation Characteristics of Two FeCrAl Alloys in Air and Steam from 800℃ to 1300℃", 《JOM》 * |
| 张志刚等: "Fe-Al和 Fe-Cr-Al合金在高温下的初期氧化", 《钢铁研究》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981420A (en) * | 2021-02-07 | 2021-06-18 | 北京首钢吉泰安新材料有限公司 | Iron-chromium-aluminum alloy with pink oxide film, preparation method thereof and annealing furnace |
| CN114752738A (en) * | 2022-05-07 | 2022-07-15 | 常州市捷祥电热电器有限公司 | Method for preparing iron-chromium-aluminum with larger resistance |
| CN114855100A (en) * | 2022-05-11 | 2022-08-05 | 烟台卓越新能源科技股份有限公司 | Electric heating wire pretreatment method and continuous pretreatment device |
| CN115141983A (en) * | 2022-07-15 | 2022-10-04 | 丹阳市海威电热合金有限公司 | Preparation method of high-toughness iron-chromium-aluminum electrothermal alloy |
| CN115338277A (en) * | 2022-08-09 | 2022-11-15 | 北京首钢吉泰安新材料有限公司 | Iron-chromium-aluminum alloy material with bright gold yellow surface and preparation method thereof |
| CN115338277B (en) * | 2022-08-09 | 2023-11-28 | 北京首钢吉泰安新材料有限公司 | Iron-chromium-aluminum alloy material with golden bright surface and preparation method thereof |
| CN116871343A (en) * | 2023-07-10 | 2023-10-13 | 北京首钢吉泰安新材料有限公司 | Iron-chromium-aluminum golden silk finished product and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111748762B (en) | 2022-09-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111748762B (en) | Iron-chromium-aluminum alloy wire with oxide film, and preparation method, application and preparation device thereof | |
| JP5402357B2 (en) | Method for producing high-Si cold-rolled steel sheet with excellent chemical conversion properties | |
| KR101733940B1 (en) | Cr-containing austenite alloy pipe and production method for same | |
| KR20110139753A (en) | Process for producing grain-oriented magnetic steel sheet, grain-oriented magnetic steel sheet for wound core, and wound core | |
| CN104630564A (en) | Preparation method of high-resistance electrothermal alloy wire | |
| CN107385189A (en) | A kind of heat treatment method of austenitic stainless steel wires | |
| CN101004995B (en) | Method for producing thorium-tungsten wire | |
| CN112981420B (en) | Iron-chromium-aluminum alloy with pink oxide film, preparation method thereof and annealing furnace | |
| KR102174155B1 (en) | Annealing separating agent composition for grain oriented electrical steel sheet, grain oriented electrical steel sheet, and method for manufacturing grain oriented electrical steel sheet | |
| TWI780824B (en) | Manufacturing method of hot-dip galvanized steel sheet, steel sheet and vehicle component | |
| CN115338277A (en) | Iron-chromium-aluminum alloy material with bright gold yellow surface and preparation method thereof | |
| CN112080749B (en) | Surface treatment method and device for nichrome wire | |
| US2170844A (en) | Hardening refractory metals | |
| CN109423578A (en) | Enamel cold-rolled steel sheet and its manufacturing method | |
| JP5270864B2 (en) | Spring steel wire manufacturing method and manufacturing apparatus | |
| JP3679176B2 (en) | Manufacturing method of deep drawing bluing cold rolled steel strip | |
| JP2019085595A (en) | Method for improving acid cleaning property of hot rolled steel sheet | |
| CN113174469B (en) | Energy-saving process for high-temperature annealing and low-heat-preservation stage of oriented silicon steel bell-type furnace | |
| JPS6372832A (en) | Production of oil tempered wire having oxide film of good formability | |
| CN112226608B (en) | Heat treatment process for silicon steel sheet | |
| JPS5825746B2 (en) | Annealing method for metal tubes for sheathed heaters | |
| JPS6223977A (en) | Manufacture of brass plates steel wire | |
| CN113502381A (en) | Decarburization preventing method for spheroidizing annealing of pit furnace and sanding device | |
| JPH01201592A (en) | High-strength steel wire and steel cord for reinforcement of rubber product | |
| JPH0742503B2 (en) | Method for forming high quality primary insulating film on unidirectional electrical steel sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |