CN111118348A - Preparation method of electrothermal alloy nickel-chromium wire - Google Patents
Preparation method of electrothermal alloy nickel-chromium wire Download PDFInfo
- Publication number
- CN111118348A CN111118348A CN201911421612.7A CN201911421612A CN111118348A CN 111118348 A CN111118348 A CN 111118348A CN 201911421612 A CN201911421612 A CN 201911421612A CN 111118348 A CN111118348 A CN 111118348A
- Authority
- CN
- China
- Prior art keywords
- wire
- percent
- alloy
- temperature
- equal
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/047—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire of fine wires
-
- 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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a preparation method of an electrothermal alloy nickel-chromium wire, which comprises the following process steps and a technology controlled in the process: s1 batching, S2 intermediate frequency smelting, S3 refining, S4 forging, S5 hot rolling, S6 annealing, S7 wire drawing and intermediate annealing, and finally obtaining Cr20Ni80 electrothermal alloy wire with the diameter of phi 3.2-phi 0.8mm through the steps. The invention optimizes the component proportion and improves the process flow, so that the produced nickel-chromium electrothermal alloy wire has excellent mechanical property and long service life. The invention effectively reduces the cost by adding the return material into the raw materials, has high utilization rate of the materials and strong process controllability in production, and is suitable for large-scale industrial production.
Description
Technical Field
The invention relates to the technical field of alloy wire preparation, in particular to a preparation method of an electrothermal alloy nickel-chromium wire.
Background
The electrothermal alloy is a resistance alloy for manufacturing a heating body by using the resistance characteristic of metal, comprises Ni-Cr series and Fe-Cr-Al series alloys, is suitable for an electric heating element working in the temperature range of 950-1400 ℃, and is generally used in the fields of industrial electric furnaces, laboratory electric furnaces, household appliances and the like. Among them, the Ni-Cr series electrothermal alloy has high-temperature strength, no brittleness after high-temperature cooling, long service life, easy processing and welding, and is widely used electrothermal alloy.
The Cr20Ni80 electrothermal alloy is an important nickel-chromium electrothermal alloy, is a single-phase alloy with Cr replaced and dissolved in a Ni matrix, has an austenite structure at room temperature and high temperature, does not generate solid phase change in the cooling process, and has a stable alloy structure. Cr20Ni80 alloy has excellent mechanical properties at high temperature and room temperature, high temperature, stable resistivity, long service life, and other excellent characteristics, and therefore is widely used in the fields of industrial furnaces, metallurgy, machinery, and the like.
China develops electrothermal alloy products from the 50 th of the 20 th century, and the electrothermal alloy products become one of the most complete countries in the world at present, and annual output is the second in the world. However, the service life and quality of the Cr20Ni80 product are still far from the same as those of imported products. The reason for this is that Cr20Ni80 has a uniform austenite structure in the range of the use temperature, does not undergo phase transformation from room temperature to high temperature, but due to the presence of a small amount of other elements in a non-dissolved state in the alloy, precipitates of different types appear during the alloy processing, thereby affecting the structure and properties of the alloy.
Disclosure of Invention
Aiming at the technical problems, the invention aims to provide a preparation method of an electrothermal alloy nickel-chromium wire material, which has excellent mechanical property, prolonged service life and greatly reduced production cost.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a preparation method of electrothermal alloy nickel-chromium wire comprises the following process steps and the technology controlled in the process:
s1, batching: the electrothermal alloy nickel-chromium wire comprises the following components in percentage by weight: c: less than or equal to 0.08 percent; si: 0.75 to 1.60 percent; mn: less than or equal to 0.60 percent; p: less than or equal to 0.020%; s: less than or equal to 0.015 percent; cr: 20.0% -23.0%; al: less than or equal to 0.50 percent; fe: less than or equal to 1.0 percent; ti: 0.03 to 0.06 percent; (La + Ce): 0.05 percent to 0.5 percent; the balance being Ni.
S2 intermediate frequency smelting: accurately batching alloy raw materials according to the weight proportion determined in the step S1, wherein the alloy raw materials comprise 30-40% of return materials, and putting the alloy raw materials into an intermediate frequency smelting furnace to smelt so as to obtain alloy ingots.
S3 refining: refining the alloy ingot through electroslag remelting, wherein the main technological parameters of the refining are as follows:
(1) slag system proportion: 60 to 70 percent of fluorite; 5% -10% of rare earth oxide; 3 to 7 percent of lime; 2 to 5 percent of magnesia; the balance of aluminum oxide;
(2) the refining temperature is 1520 ℃ to 1540 ℃, and the refining time is more than 45 minutes;
(3) the tapping temperature is 1540-1560 ℃.
S4 forging: the heating temperature is 1160-1200 ℃, and the heat preservation time is more than 2 h. The forging temperature is more than or equal to 1150 ℃, the finish forging temperature is more than or equal to 950 ℃, the tempering time is more than 40 minutes, the standard square bar obtained by forging has the consistent specification of 2800 mm-3000 mm, the chamfer angle is smooth, and the square bar is cooled in the air.
S5 hot rolling: the standard square bar is hot-rolled to obtain a wire rod, the hot-rolling heating temperature is 1150-1180 ℃, the heat is preserved for 45-60 minutes, the initial rolling temperature is more than or equal to 1150 ℃, and the final rolling temperature is more than or equal to 950 ℃;
s6 annealing: annealing the wire rod;
s7 wire drawing and intermediate annealing: and (3) carrying out alkaline leaching, washing, drying, drawing by a wire drawing process and carrying out intermediate annealing on the annealed wire rod to obtain the electrothermal alloy nickel-chromium wire.
Further, the electrothermal alloy nickel-chromium wire is a Cr20Ni80 electrothermal alloy wire.
In the present example, in S7, the annealed wire rod is cold-drawn on a wire drawing machine for a plurality of times, and an intermediate annealing is performed every time the deformation amount reaches 50%.
And further, drawing the wire rod for multiple times to obtain a wire with the diameter phi of 3.2-0.8 mm.
The principle of the component design in the electrothermal alloy nickel-chromium wire material provided by the invention is as follows:
ni: the nickel is used as the matrix of the electrothermal alloy and plays a leading role in the characteristics of the electrothermal alloy, so that the nickel has a good effect on the mechanical property of the electrothermal alloy. Meanwhile, nickel belongs to a non-metallic carbide forming element, and when the content of nickel is constant, the resistivity of the alloy can be improved, and the temperature coefficient of resistance of the alloy can be reduced.
Cr: in the electrothermal alloy, chromium plays a role in the high-temperature oxidation resistance, high-temperature strength and resistivity of the alloy. The chromium element is fused into the nickel matrix to cause solid solution lattice distortion and generate solid solution strengthening effect, so that the high-temperature strength of the alloy is improved; on the surface of the high-temperature alloy, chromium can react with oxygen to form a compact chromium oxide oxidation film with strong adhesive force with a matrix, so that oxygen atoms and other corrosive gases can be well prevented from diffusing into a machine body, and the long-term use of an electric heating element at high temperature is ensured; and the resistivity increases with increasing chromium content. Therefore, the content is limited to 20.0% to 23.0%.
C: the carbon element and the chromium in the alloy can form a chromium carbide compound, the compound can be concentrated and precipitated at a grain boundary in the alloy solidification process, stress concentration is easily caused, a crack source is formed, and the plasticity of the alloy is greatly reduced, but the compound is helpful for improving the high-temperature strength and the resistivity of the alloy to a certain extent. Therefore, the content is limited to 0.08% or less.
Si: the role of silicon is that it promotes the oxidation resistance of the alloy. Silicon and oxygen form silicon dioxide, which is distributed at the interface between the chromium oxide and the matrix, and thus, oxygen atoms are prevented from diffusing into the body, and the compactness of the oxide film is increased. . Therefore, the content is limited to 0.75% to 1.60%.
P, S: the two deadly harmful elements are difficult to dissolve in the alloy, can generate low melting point and eutectic compounds with nickel and chromium, are separated from grain boundaries and are gathered on the grain boundaries along with the solidification of the alloy, so that the grain boundaries become brittle, and the plasticity and the heat strength of the alloy are influenced. Therefore, the contents thereof are set to P: less than or equal to 0.020%; s: less than or equal to 0.015 percent.
Al: when an appropriate amount of aluminum is added to the alloy, the oxidation resistance of the alloy at high temperatures can be improved, but the strength and plasticity of the alloy are reduced beyond a certain value. Therefore, the content thereof is limited to 0.50% or less.
Fe: iron is a ferrite-forming element and the superalloy is austenitic, and when the iron content is high, the high-temperature strength, oxidation resistance and maximum service temperature of the alloy are reduced. Therefore, the content thereof is set to 1.0% or less.
Mn: the effect of manganese on this electrothermal alloy is similar to that of iron. Therefore, the content thereof is set to 0.60% or less.
Ti: titanium enhances the room-temperature tensile strength and the high-temperature tensile strength of the electrothermal alloy, but as the addition amount increases, the elongation after fracture of the alloy decreases. Therefore, the content is limited to 0.03 to 0.06 percent.
(La + Ce): the rare earth element is added into the alloy, so that the compactness of an oxidation film can be improved, and the high-temperature oxidation resistance of the alloy is improved; when a proper amount of rare earth elements are added into the high-temperature alloy, the rare earth elements can form rare earth compounds with elements such as S and the like in the alloy, so that the content of harmful impurity elements is effectively reduced, and the harmful impurity elements can be uniformly dispersed in the alloy; meanwhile, the rare earth elements are added to inhibit the growth of alloy grains, so that the grains tend to be refined, and the occurrence of cracks is reduced, thereby improving the plasticity and strength of the alloy at high temperature and room temperature. Therefore, the content thereof is set to 0.05% to 0.5%.
The invention has the following beneficial effects: by reasonably designing the components, the prepared electrothermal alloy nickel-chromium wire has excellent mechanical property and prolonged service life; the electrothermal alloy nickel-chromium wire material ensures the purity degree, the microstructure compactness and the chemical component uniformity of the alloy through medium-frequency smelting and electroslag remelting refining. Meanwhile, the raw materials during production comprise the used return materials, and the return materials are adopted for production, so that the cost is effectively reduced.
Detailed Description
In order to further understand the object and function of the present invention, the following embodiments are described in detail.
Example 1
The preparation method of the electrothermal alloy nickel-chromium wire is characterized by comprising the following process steps and technologies controlled in the process:
s1, batching: the electrothermal alloy nickel-chromium wire comprises the following components in percentage by weight: c: 0.05 percent; si: 1.25 percent; mn: 0.35 percent; p: 0.018%; s: 0.012%; cr: 22.5 percent; al: 0.45 percent; fe: 0.50 percent; ti: 0.06 percent; (La + Ce): 0.25 percent; the balance being Ni. Further, the electrothermal alloy nickel-chromium wire is specifically a Cr20Ni80 electrothermal alloy wire.
S2 intermediate frequency smelting: accurately batching alloy raw materials according to the weight ratio set in the S1, wherein the alloy raw materials comprise 30% of return materials, and putting the alloy raw materials into an intermediate frequency smelting furnace for smelting to obtain alloy ingots;
s3 refining: refining the alloy ingot through electroslag remelting, wherein the refining has the following main process parameters:
(1) slag system proportion: 65% fluorite; 7% rare earth oxide; 5% lime; 3% of magnesia; the balance of aluminum oxide;
(2) the refining temperature is 1520 ℃, and the refining time is 45 minutes;
(3) the tapping temperature is 1550 ℃;
s4 forging: the heating temperature is 1180 ℃, and the heat preservation time is 2.5 h. The open forging temperature is 1150 ℃, the finish forging temperature is 950 ℃, the tempering time is 1h, the standard square bar obtained by forging has the consistent specification of 2800 mm-3000 mm, the chamfer angle is smooth, and the square bar is cooled in the air;
s5 hot rolling: hot rolling a standard square rod to obtain a wire rod, wherein the hot rolling heating temperature is 1150 ℃, the heat preservation time is 60 minutes, the initial rolling temperature is 1140 ℃, and the final rolling temperature is 950 ℃;
s6 annealing: annealing the wire rod;
s7 wire drawing and intermediate annealing: and (3) carrying out alkaline leaching, washing, drying, drawing by a wire drawing process and carrying out intermediate annealing on the annealed wire rod to obtain the electrothermal alloy nickel-chromium wire. Further, the annealed wire rod is subjected to cold wire drawing for multiple times on a wire drawing machine, and intermediate annealing is performed every time when the deformation reaches 50%. Preferably, the wire rod is subjected to wire drawing for multiple times to obtain a wire material with the diameter phi of 3.2-0.8 mm.
Performing a performance detection test on the prepared nickel-chromium wire to obtain the tensile strength of the nickel-chromium wire of 795 MPa; the elongation is 18 percent; the rapid life value of the alloy at 1300 ℃ is 123h, which is obviously higher than the 80h standard specified by the GB/T13300-1991 high-resistance electrothermal alloy rapid life test method.
Example 2
The preparation method of the electrothermal alloy nickel-chromium wire is characterized by comprising the following process steps and technologies controlled in the process:
s1, batching: the electrothermal alloy nickel-chromium wire comprises the following components in percentage by weight: c: 0.045%; si: 1.48 percent; mn: 0.50 percent; p: 0.015 percent; s: 0.01 percent; cr: 20.3 percent; al: 0.45 percent; fe: 0.65 percent; ti: 0.06 percent; (La + Ce): 0.5 percent; the balance being Ni. Further, the electrothermal alloy nickel-chromium wire is specifically a Cr20Ni80 electrothermal alloy wire.
S2 intermediate frequency smelting: accurately batching alloy raw materials according to the weight ratio set in the S1, wherein the alloy raw materials comprise 30% of return materials, and putting the alloy raw materials into an intermediate frequency smelting furnace for smelting to obtain alloy ingots;
s3 refining: refining the alloy ingot through electroslag remelting, wherein the refining has the following main process parameters:
(1) slag system proportion: 65% fluorite; 7% rare earth oxide; 5% lime; 3% of magnesia; the balance of aluminum oxide;
(2) the refining temperature is 1520 ℃, and the refining time is 45 minutes;
(3) the tapping temperature is 1550 ℃;
s4 forging: the heating temperature is 1180 ℃, and the heat preservation time is 2.5 h. The open forging temperature is 1150 ℃, the finish forging temperature is 950 ℃, the tempering time is 1h, the standard square bar obtained by forging has the consistent specification of 2800 mm-3000 mm, the chamfer angle is smooth, and the square bar is cooled in the air;
s5 hot rolling: hot rolling a standard square rod to obtain a wire rod, wherein the hot rolling heating temperature is 1150 ℃, the heat preservation time is 60 minutes, the initial rolling temperature is 1140 ℃, and the final rolling temperature is 950 ℃;
s6 annealing: annealing the wire rod;
s7 wire drawing and intermediate annealing: and (3) carrying out alkaline leaching, washing, drying, drawing by a wire drawing process and carrying out intermediate annealing on the annealed wire rod to obtain the electrothermal alloy nickel-chromium wire. Further, the annealed wire rod is subjected to cold wire drawing for multiple times on a wire drawing machine, and intermediate annealing is performed every time when the deformation reaches 50%. Preferably, the wire rod is subjected to wire drawing for multiple times to obtain a wire material with the diameter phi of 3.2-0.8 mm.
Performing a performance detection test on the prepared nickel-chromium wire to obtain the tensile strength of 1120 MPa; the elongation is 25%; the rapid life value of the alloy at 1300 ℃ is 162h, which is obviously higher than the 80h standard specified by the GB/T13300-1991 high-resistance electrothermal alloy rapid life test method.
Example 3
The preparation method of the electrothermal alloy nickel-chromium wire is characterized by comprising the following process steps and technologies controlled in the process:
s1, batching: the electrothermal alloy nickel-chromium wire comprises the following components in percentage by weight: c: 0.063%; si: 1.25 percent; mn: 0.45 percent; p: 0.018%; s: 0.009%; cr: 21.50 percent; al: 0.36 percent; fe: 0.77 percent; ti: 0.06; (La + Ce): 0.35 percent; the balance being Ni. Further, the electrothermal alloy nickel-chromium wire is specifically a Cr20Ni80 electrothermal alloy wire.
S2 intermediate frequency smelting: accurately batching alloy raw materials according to the weight ratio set in the S1, wherein the alloy raw materials comprise 30% of return materials, and putting the alloy raw materials into an intermediate frequency smelting furnace for smelting to obtain alloy ingots;
s3 refining: refining the alloy ingot through electroslag remelting, wherein the refining has the following main process parameters:
(1) slag system proportion: 65% fluorite; 7% rare earth oxide; 5% lime; 3% of magnesia; the balance of aluminum oxide;
(2) the refining temperature is 1520 ℃, and the refining time is 45 minutes;
(3) the tapping temperature is 1550 ℃;
s4 forging: the heating temperature is 1180 ℃, and the heat preservation time is 2.5 h. The open forging temperature is 1150 ℃, the finish forging temperature is 950 ℃, the tempering time is 1h, the standard square bar obtained by forging has the consistent specification of 2800 mm-3000 mm, the chamfer angle is smooth, and the square bar is cooled in the air;
s5 hot rolling: hot rolling a standard square rod to obtain a wire rod, wherein the hot rolling heating temperature is 1150 ℃, the heat preservation time is 60 minutes, the initial rolling temperature is 1140 ℃, and the final rolling temperature is 950 ℃;
s6 annealing: annealing the wire rod;
s7 wire drawing and intermediate annealing: and (3) carrying out alkaline leaching, washing, drying, drawing by a wire drawing process and carrying out intermediate annealing on the annealed wire rod to obtain the electrothermal alloy nickel-chromium wire. Further, the annealed wire rod is subjected to cold wire drawing for multiple times on a wire drawing machine, and intermediate annealing is performed every time when the deformation reaches 50%. Preferably, the wire rod is subjected to wire drawing for multiple times to obtain a wire material with the diameter phi of 3.2-0.8 mm.
Performing a performance detection test on the prepared nickel-chromium wire to obtain the tensile strength of the nickel-chromium wire of 785 MPa; the elongation is 23%; the rapid life value of the alloy at 1300 ℃ is 155h, which is obviously higher than the 80h standard specified by the GB/T13300-1991 high-resistance electrothermal alloy rapid life test method.
By reasonably designing the components, the prepared electrothermal alloy nickel-chromium wire has excellent mechanical property and prolonged service life; the electrothermal alloy nickel-chromium wire material ensures the purity degree, the microstructure compactness and the chemical component uniformity of the alloy through medium-frequency smelting and electroslag remelting refining. Meanwhile, the raw materials during production comprise the used return materials, and the return materials are adopted for production, so that the cost is effectively reduced.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (4)
1. The preparation method of the electrothermal alloy nickel-chromium wire is characterized by comprising the following process steps and technologies controlled in the process:
s1, batching: the electrothermal alloy nickel-chromium wire comprises the following components in percentage by weight: c: less than or equal to 0.08 percent; si: 0.75 to 1.60 percent; mn: less than or equal to 0.60 percent; p: less than or equal to 0.020%; s: less than or equal to 0.015 percent; cr: 20.0% -23.0%; al: less than or equal to 0.50 percent; fe: less than or equal to 1.0 percent; ti: 0.03 to 0.06 percent; (La + Ce): 0.05 percent to 0.5 percent; the balance being Ni;
s2 intermediate frequency smelting: accurately batching alloy raw materials according to the weight proportion determined in the step S1, wherein the alloy raw materials comprise 30-40% of return materials, and putting the alloy raw materials into an intermediate frequency smelting furnace to smelt so as to obtain alloy ingots;
s3 refining: refining the alloy ingot through electroslag remelting, wherein the main technological parameters of the refining are as follows:
(1) slag system proportion: 60 to 70 percent of fluorite; 5% -10% of rare earth oxide; 3 to 7 percent of lime; 2 to 5 percent of magnesia; the balance of aluminum oxide;
(2) the refining temperature is 1520 ℃ to 1540 ℃, and the refining time is more than 45 minutes;
(3) the tapping temperature is 1540-1560 ℃;
s4 forging: the heating temperature is 1160-1200 ℃, and the heat preservation time is more than 2 h;
the open forging temperature is more than or equal to 1150 ℃, the finish forging temperature is more than or equal to 950 ℃, the tempering time is more than 40 minutes, the standard square bar obtained by forging has the consistent specification of 2800 mm-3000 mm, the chamfer angle is smooth, and the square bar is cooled in the air;
s5 hot rolling: the standard square bar is hot-rolled to obtain a wire rod, the hot-rolling heating temperature is 1150-1180 ℃, the heat is preserved for 45-60 minutes, the initial rolling temperature is more than or equal to 1150 ℃, and the final rolling temperature is more than or equal to 950 ℃;
s6 annealing: annealing the wire rod;
s7 wire drawing and intermediate annealing: and (3) carrying out alkaline leaching, washing, drying, drawing by a wire drawing process and carrying out intermediate annealing on the annealed wire rod to obtain the electrothermal alloy nickel-chromium wire.
2. The method for preparing an electrothermal alloy nickel-chromium wire as claimed in claim 1, wherein the electrothermal alloy nickel-chromium wire is a Cr20Ni80 electrothermal alloy wire.
3. The method of claim 1, wherein in said S7, said wire rod after annealing is cold drawn on a wire drawing machine several times, and intermediate annealing is performed every time the deformation reaches 50%.
4. The method for preparing an electrothermal alloy nickel-chromium wire according to claim 3, wherein the wire rod is drawn for a plurality of times to obtain a wire with a diameter of phi 3.2 to phi 0.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911421612.7A CN111118348A (en) | 2019-12-31 | 2019-12-31 | Preparation method of electrothermal alloy nickel-chromium wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911421612.7A CN111118348A (en) | 2019-12-31 | 2019-12-31 | Preparation method of electrothermal alloy nickel-chromium wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111118348A true CN111118348A (en) | 2020-05-08 |
Family
ID=70507849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911421612.7A Pending CN111118348A (en) | 2019-12-31 | 2019-12-31 | Preparation method of electrothermal alloy nickel-chromium wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111118348A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111621675A (en) * | 2020-07-17 | 2020-09-04 | 江苏美特林科特殊合金股份有限公司 | Method for smelting K452 high-temperature alloy containing return materials |
| CN112359250A (en) * | 2020-10-29 | 2021-02-12 | 江苏新核合金科技有限公司 | Preparation method of high-resistance electrothermal alloy |
| CN112792145A (en) * | 2020-12-29 | 2021-05-14 | 松田电工（台山）有限公司 | Enameled wire production equipment capable of reducing wire damage and production process thereof |
| CN113106298A (en) * | 2021-04-16 | 2021-07-13 | 江苏兄弟合金有限公司 | High-precision heating wire round wire with diameter of 0.03mm and preparation method thereof |
| CN113399490A (en) * | 2021-04-26 | 2021-09-17 | 王传银 | Preparation process of high-strength aluminum plate strip |
| CN115216657A (en) * | 2022-07-20 | 2022-10-21 | 镇江银海镍铬化工有限公司 | Production process of high-performance nickel-chromium alloy resistance wire |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3816110A (en) * | 1971-04-15 | 1974-06-11 | Tokyo Shibaura Electric Co | Heat-resistant and corrosion-resistant high chromium-nickel alloy |
| CN102206773A (en) * | 2011-04-22 | 2011-10-05 | 江苏新华合金电器有限公司 | High-resistance electrothermal alloy material and preparation method thereof |
| CN109055823A (en) * | 2018-07-02 | 2018-12-21 | 江苏新华合金电器有限公司 | Novel high-resistance electrothermic alloy Cr20Ni80Al and preparation method thereof |
-
2019
- 2019-12-31 CN CN201911421612.7A patent/CN111118348A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3816110A (en) * | 1971-04-15 | 1974-06-11 | Tokyo Shibaura Electric Co | Heat-resistant and corrosion-resistant high chromium-nickel alloy |
| CN102206773A (en) * | 2011-04-22 | 2011-10-05 | 江苏新华合金电器有限公司 | High-resistance electrothermal alloy material and preparation method thereof |
| CN109055823A (en) * | 2018-07-02 | 2018-12-21 | 江苏新华合金电器有限公司 | Novel high-resistance electrothermic alloy Cr20Ni80Al and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 赵朗朗: "Cr20Ni80电热合金丝材加工过程中组织演变及力学性能的研究", 《硕士学位论文》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111621675A (en) * | 2020-07-17 | 2020-09-04 | 江苏美特林科特殊合金股份有限公司 | Method for smelting K452 high-temperature alloy containing return materials |
| CN111621675B (en) * | 2020-07-17 | 2021-10-26 | 江苏美特林科特殊合金股份有限公司 | Method for smelting K452 high-temperature alloy containing return materials |
| CN112359250A (en) * | 2020-10-29 | 2021-02-12 | 江苏新核合金科技有限公司 | Preparation method of high-resistance electrothermal alloy |
| CN112792145A (en) * | 2020-12-29 | 2021-05-14 | 松田电工（台山）有限公司 | Enameled wire production equipment capable of reducing wire damage and production process thereof |
| CN113106298A (en) * | 2021-04-16 | 2021-07-13 | 江苏兄弟合金有限公司 | High-precision heating wire round wire with diameter of 0.03mm and preparation method thereof |
| CN113106298B (en) * | 2021-04-16 | 2022-02-25 | 江苏兄弟合金有限公司 | High-precision heating wire round wire with diameter of 0.03mm and preparation method thereof |
| CN113399490A (en) * | 2021-04-26 | 2021-09-17 | 王传银 | Preparation process of high-strength aluminum plate strip |
| CN115216657A (en) * | 2022-07-20 | 2022-10-21 | 镇江银海镍铬化工有限公司 | Production process of high-performance nickel-chromium alloy resistance wire |
| CN115216657B (en) * | 2022-07-20 | 2023-09-26 | 镇江银海镍铬化工有限公司 | Production process of high-performance nichrome resistance wire |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111118348A (en) | Preparation method of electrothermal alloy nickel-chromium wire | |
| CN103725972B (en) | Polynary high-resistance electrothermic alloy of low-carbon (LC) and preparation method thereof | |
| CN104233003B (en) | A kind of high manganese nichrome resistance electrothermal alloy and preparation method thereof | |
| CN103952594B (en) | A kind of preparation method of nickel chromium triangle system multi-element high-resistance electrothermal alloy | |
| CN104878248B (en) | High temperature alloy 625H and its manufacturing process | |
| CN104789815A (en) | High-resistant chromium-nickel electric heating alloy and preparation process thereof | |
| CN103820729A (en) | Titanium reinforced high-cobalt martensitic aged anti-corrosion ultrahigh-strength steel and preparation method | |
| CN103014551A (en) | Novel high-temperature alloy heat-resistant stainless steel bolt and production process thereof | |
| CN101709428A (en) | Compound microalloy hot die steel with high heat resistance and preparation method thereof | |
| CN111057937A (en) | Electrothermal alloy iron-chromium-aluminum wire material and preparation method thereof | |
| CN106756582A (en) | A kind of enhanced low-expansion alloy of intermetallic compound and preparation method | |
| CN109055823A (en) | Novel high-resistance electrothermic alloy Cr20Ni80Al and preparation method thereof | |
| CN103938058B (en) | A kind of preparation method of nickel chromium iron system multi-element high-resistance electrothermal alloy band | |
| CN103540859B (en) | High heat-resistant stainless steel coffee pot material and preparation method thereof | |
| CN105238957A (en) | High-property nickel-base superalloy and production method thereof | |
| CN111088448B (en) | Cobalt-based high-temperature alloy strip foil and preparation method thereof | |
| CN103938032B (en) | A kind of nickel chromium triangle that improves is the electrothermal alloy method in service life | |
| CN113073234A (en) | Nickel-chromium high-resistance electrothermal alloy and preparation method thereof | |
| CN104233065A (en) | Silicon carbide-enhanced iron/aluminum composite material and preparation method thereof | |
| CN108998635A (en) | The preparation method of anti-oxidant electrothermal alloy | |
| CN102230129A (en) | High-strength steel plate containing rare earth (RE) and heat treatment process thereof | |
| CN103938109A (en) | Preparation method of Ni-Cr-Fe electrothermal alloy | |
| CN105543653A (en) | Plastic die steel with high intensity, high toughness and high corrosion resistance and production method thereof | |
| CN103938111A (en) | Method for reducing non-metallic inclusions in iron-chromium-aluminum electrothermal alloy | |
| CN112708826A (en) | 9% Ni steel suitable for super-thick section improvement type and preparation method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200508 |