CN104561799A - Iron-chromium-aluminum alloy machining process - Google Patents
Iron-chromium-aluminum alloy machining process Download PDFInfo
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- CN104561799A CN104561799A CN201310514201.9A CN201310514201A CN104561799A CN 104561799 A CN104561799 A CN 104561799A CN 201310514201 A CN201310514201 A CN 201310514201A CN 104561799 A CN104561799 A CN 104561799A
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- alloy
- aluminium alloy
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- aludirome
- refining
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- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses an iron-chromium-aluminum alloy machining process and relates to the field of metal processing. The iron-chromium-aluminum alloy machining process comprises high-frequency smelting processing and cast rolling processing, and specifically comprises ten process steps of smelting, refining, filtering, casting, repairing, cold rolling, thermal treatment, finishing, checking and screening. In the processing method, vacuum melting is adopted to effectively protect the alloy from being oxidized and guarantee stable mechanical properties of the alloy; a refining agent and a foamed ceramic filter plate are capable of removing harmful gases and nonmetallic inclusions in the liquid alloy and improving the clarity of the alloy; water-cooling semi-continuous casting is adopted to reduce the time of cast cooling and effectively promote grain refinement; and as a result, the machining performance and the production efficiency are improved.
Description
Technical field
The present invention relates to metal processing sectors, be specifically related to a kind of Aludirome complete processing.
Background technology
Aludirome is owing to having good thermostability, desirable heat conductivity, oxidation-resistance is strong, anti-vibration resistance is good, and have the advantages such as good machinability, it is made to be used widely in all trades and professions, therefore also getting more and more to the Research on processing technology of Aludirome, a kind of Aludirome is disclosed and first manufacture method manufacture method adopts powder metallurgy process to prepare Aludirome blank as application number 97104028.1, and then be processed into goods, powder metallurgy process is prepared Aludirome blank and is comprised powder process, mechanical alloying, shaping and sintering circuit, Aludirome goods prepared by this invention have antioxidant property and the processing characteristics of higher hot strength and Geng Gao, thus use temperature is high, life-span is long, but the powder process in this invention and mechanical alloying difficulty of processing larger, and stress is large needed for abrasive alumina particles, severe to grinding tool loss, sintering carries out under hydrogen shield, make the alumina layer skewness of obtained blank surface, and blank generation hydrogen embrittlement fracture may be made, machining property reduces.
Summary of the invention
It is simple that problem to be solved by this invention is to provide a kind of technological process, and technological factor is controlled, a kind of Aludirome complete processing that machining property is good.
To achieve these goals, the technical scheme that the present invention takes is a kind of Aludirome complete processing of providing, and comprise high frequency smelting processing and casting processing, processing step is as described below:
(1) melting: dropped in vacuum induction furnace by melting material and smelt, be incubated 2 ~ 4h at preheating 350 ~ 450 DEG C, during fusing, aluminium alloy temperature controls, at 740 ~ 760 DEG C, to carry out induction stirring every 10 ~ 25min;
(2) refining: add refining agent hexachloroethane in the aluminium alloy of step (1), add-on is 0.4 ~ 2% of alloy gross weight, and the timed interval of induction stirring is 10 ~ 15min;
(3) filter: imported in strumbox by foamed ceramic filter plate by aluminium alloy good for step (2) refining, strumbox temperature is set to 700 ~ 750 DEG C;
(4) cast: by the aluminium alloy in step (3) strumbox by water-cooled semicontinuous casting, by chute, aluminium alloy is imported in crystallizer with the speed of 50 ~ 70L/mim, crystallizer water cooling;
(5) repair: the foundry goods that step (4) processes is placed on cold welding pattching machine, first with flaw detection head scanning foundry goods determination defective locations, adjustment discharge pulse frequency is 150 ~ 160KHz, pulse width is 4 μ s, discharging gap is 54 ~ 60% voltages, moves to the work of casting defect place by electrical spark head with without thermal reactor welding gun;
(6) cold rolling: the foundry goods that step (5) has been repaired to be put into roller mill and carries out cold rolling, obtained thickness of strip is 0.18 ~ 12mm;
(7) thermal treatment: the workpiece after step (6) rolling is put into warm shove charge, and Heating temperature to 400 ~ 550 DEG C are incubated 2 ~ 4h again, it is cold finally directly to carry out stove;
(8) finishing: the band after step (7) thermal treatment is placed on straightener, carries out finishing by roll;
(9) check: the density checking the band that step (8) is obtained, whether tensile strength is consistent with design requirements with unit elongation;
(10) screen: by the inspection operation of step (9), choose density, tensile strength, the unit elongation band consistent with design requirements as the finished product.
Preferably, in described step (1), melting material is ingot iron, chromium ingot, aluminium ingot and alumina particle, and wherein Cr content is 10 ~ 30%, Al content is 3 ~ 7%, Al
2o
3content is 0.1 ~ 2%, and other is Fe.
Preferably, alloying constituent is analyzed with hand-held alloying constituent fast detector before described step (1) melting.
Preferably, in described step (6), roller mill rotating speed controls at 72 ~ 90r/min.
Adopt technical scheme of the present invention; described vacuum metling energy available protecting alloy is not oxidized; ensure the stable mechanical performance of alloy; described refining agent and foamed ceramic filter plate can remove obnoxious flavour and non-metallic inclusion in aluminium alloy; improve alloy purity; described water-cooled semicontinuous casting shortens foundry goods cooling time, and effectively can promote grain refining, improves machining property and production efficiency.
Embodiment
embodiment 1:
1, melting: dropped in vacuum induction furnace by melting material and smelt, melting material is ingot iron, chromium ingot, aluminium ingot and alumina particle, and wherein Cr content is 25%, Al content is 4.5%, Al
2o
3content is 0.1%, and other is Fe, and the ratio hand-held alloying constituent fast detector of melting material carrys out analysis confirmation, is incubated 2h at preheating 350 DEG C, and during fusing, aluminium alloy temperature controls, at 740 DEG C, to carry out induction stirring every 15min;
2, refining: add refining agent hexachloroethane in the aluminium alloy of step (1), add-on is 0.4% of alloy gross weight, and the timed interval of induction stirring is 10min;
3, filter: imported in strumbox by foamed ceramic filter plate by aluminium alloy good for step (2) refining, strumbox temperature is set to 700 DEG C;
4, cast: by the aluminium alloy in step (3) strumbox by water-cooled semicontinuous casting, by chute, aluminium alloy is imported in crystallizer with the speed of 50L/mim, crystallizer water cooling;
5, repair: the foundry goods that step (4) processes is placed on cold welding pattching machine, first with flaw detection head scanning foundry goods determination defective locations, adjustment discharge pulse frequency is 150KHz, pulse width is 4 μ s, discharging gap is 54% voltage, moves to the work of casting defect place by electrical spark head with without thermal reactor welding gun;
6, cold rolling: the foundry goods that step (5) has been repaired is put into roller mill and carries out cold rolling, roller mill rotating speed controls at 72r/min, obtained thickness of strip is 2mm;
7, thermal treatment: the workpiece after step (6) rolling is put into warm shove charge, and Heating temperature to 400 DEG C is incubated 2h again, it is cold finally directly to carry out stove;
8, finishing: the band after step (7) thermal treatment is placed on straightener, carries out finishing by roll;
9, check: the density checking the band that step (8) is obtained, whether tensile strength is consistent with design requirements with unit elongation;
10, screen: by the inspection operation of step (9), choose density, tensile strength, the unit elongation band consistent with design requirements as the finished product.
embodiment 2:all the other are identical with embodiment 1, and difference is in described step (1), and Cr content is 22%, Al content is 5.7%, Al
2o
3content is 1.0%, other is Fe, 3h is incubated at preheating 400 DEG C in described step (1), during fusing, aluminium alloy temperature controls at 750 DEG C, in described step (2), the add-on of refining agent is 1% of alloy gross weight, in described step (3), strumbox temperature is set to 725 DEG C, in described step (4) interalloy liquid importing crystallizer is 60L/mim, in described step (5), discharge pulse frequency is adjusted to 155KHz, Spark gap adjustment is 57% voltage, in described step (6), roller mill rotating speed controls at 80r/min, in described step (7), the heating temperatures to 500 DEG C of warm shove charge is incubated 3h again.
embodiment 3:all the other are identical with embodiment 1, and difference is, in described step (1), Cr content is 15%, Al content is 5.1%, Al
2o
3content is 2.0%, other is Fe, 4h is incubated at preheating 450 DEG C in described step (1), during fusing, aluminium alloy temperature controls at 760 DEG C, in described step (2), the add-on of refining agent is 2% of alloy gross weight, in described step (3), strumbox temperature is set to 750 DEG C, in described step (4) interalloy liquid importing crystallizer is 70L/mim, in described step (5), discharge pulse frequency is adjusted to 160KHz, Spark gap adjustment is 60% voltage, in described step (6), roller mill rotating speed controls at 90r/min, in described step (7), the heating temperatures to 550 DEG C of warm shove charge is incubated 4h again.
After above processing step, take out lens sample, to be measured:
From above data; vacuum metling energy available protecting alloy is not oxidized; ensure the stable mechanical performance of alloy; refining agent and foamed ceramic filter plate can remove obnoxious flavour and non-metallic inclusion in aluminium alloy; improve alloy purity; water-cooled semicontinuous casting shortens foundry goods cooling time, and effectively can promote grain refining, improves machining property and production efficiency.
Obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (4)
1. an Aludirome complete processing, comprise high frequency smelting processing and casting processing, processing step is as described below:
(1) melting: dropped in vacuum induction furnace by melting material and smelt, be incubated 2 ~ 4h at preheating 350 ~ 450 DEG C, during fusing, aluminium alloy temperature controls, at 740 ~ 760 DEG C, to carry out induction stirring every 10 ~ 25min;
(2) refining: add refining agent hexachloroethane in the aluminium alloy of step (1), add-on is 0.4 ~ 2% of alloy gross weight, and the timed interval of induction stirring is 10 ~ 15min;
(3) filter: imported in strumbox by foamed ceramic filter plate by aluminium alloy good for step (2) refining, strumbox temperature is set to 700 ~ 750 DEG C;
(4) cast: by the aluminium alloy in step (3) strumbox by water-cooled semicontinuous casting, by chute, aluminium alloy is imported in crystallizer with the speed of 50 ~ 70L/mim, crystallizer water cooling;
(5) repair: the foundry goods that step (4) processes is placed on cold welding pattching machine, first with flaw detection head scanning foundry goods determination defective locations, adjustment discharge pulse frequency is 150 ~ 160KHz, pulse width is 4 μ s, discharging gap is 54 ~ 60% voltages, moves to the work of casting defect place by electrical spark head with without thermal reactor welding gun;
(6) cold rolling: the foundry goods that step (5) has been repaired to be put into roller mill and carries out cold rolling, obtained thickness of strip is 0.18 ~ 12mm;
(7) thermal treatment: the workpiece after step (6) rolling is put into warm shove charge, and Heating temperature to 400 ~ 550 DEG C are incubated 2 ~ 4h again, it is cold finally directly to carry out stove;
(8) finishing: the band after step (7) thermal treatment is placed on straightener, carries out finishing by roll;
(9) check: the density checking the band that step (8) is obtained, whether tensile strength is consistent with design requirements with unit elongation;
(10) screen: by the inspection operation of step (9), choose density, tensile strength, the unit elongation band consistent with design requirements as the finished product.
2. a kind of Aludirome complete processing according to claim 1, is characterized in that: in described step (1), melting material is ingot iron, chromium ingot, aluminium ingot and alumina particle, and wherein Cr content is 10 ~ 30%, Al content is 3 ~ 7%, Al
2o
3content is 0.1 ~ 2%, and other is Fe.
3. a kind of Aludirome complete processing according to claim 1, is characterized in that: analyze alloying constituent with hand-held alloying constituent fast detector before described step (1) melting.
4. a kind of Aludirome complete processing according to claim 1, is characterized in that: in described step (6), roller mill rotating speed controls at 72 ~ 90r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310514201.9A CN104561799A (en) | 2013-10-28 | 2013-10-28 | Iron-chromium-aluminum alloy machining process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310514201.9A CN104561799A (en) | 2013-10-28 | 2013-10-28 | Iron-chromium-aluminum alloy machining process |
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|---|---|
| CN104561799A true CN104561799A (en) | 2015-04-29 |
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| CN201310514201.9A Pending CN104561799A (en) | 2013-10-28 | 2013-10-28 | Iron-chromium-aluminum alloy machining process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105420523A (en) * | 2014-09-19 | 2016-03-23 | 中山市鸿程科研技术服务有限公司 | Iron-chromium-aluminum alloy machining technology |
| CN107812521A (en) * | 2017-11-14 | 2018-03-20 | 江苏师范大学 | A kind of preparation method of bimetallic nano propane dehydrogenation catalyst |
| CN111424161A (en) * | 2020-03-17 | 2020-07-17 | 中北大学 | Heat treatment method for improving and stabilizing elongation of iron-chromium-aluminum wire |
| CN115786636A (en) * | 2022-12-15 | 2023-03-14 | 河钢股份有限公司 | Method for smelting high-purity iron-chromium-aluminum alloy by vacuum induction furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993018196A1 (en) * | 1992-03-09 | 1993-09-16 | Nippon Steel Corporation | Fe-Cr-Al ALLOY STEEL SHEET AND PRODUCTION THEREOF |
| CN1093758A (en) * | 1993-04-16 | 1994-10-19 | 山东工业大学 | Cast 1300-1350 ℃ of iron-based high temperature steel and founding |
| CN1167838A (en) * | 1997-04-18 | 1997-12-17 | 冶金工业部钢铁研究总院 | Fe-Cr-Al alloy and its making method |
| JP2002105606A (en) * | 2000-07-27 | 2002-04-10 | Nippon Steel Corp | Fe-Cr-Al BASED ALLOY |
| CN101090986A (en) * | 2004-04-28 | 2007-12-19 | 蒂森克鲁普德国联合金属制造有限公司 | Iron-chrome-aluminum alloy |
-
2013
- 2013-10-28 CN CN201310514201.9A patent/CN104561799A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| WO1993018196A1 (en) * | 1992-03-09 | 1993-09-16 | Nippon Steel Corporation | Fe-Cr-Al ALLOY STEEL SHEET AND PRODUCTION THEREOF |
| CN1093758A (en) * | 1993-04-16 | 1994-10-19 | 山东工业大学 | Cast 1300-1350 ℃ of iron-based high temperature steel and founding |
| CN1167838A (en) * | 1997-04-18 | 1997-12-17 | 冶金工业部钢铁研究总院 | Fe-Cr-Al alloy and its making method |
| JP2002105606A (en) * | 2000-07-27 | 2002-04-10 | Nippon Steel Corp | Fe-Cr-Al BASED ALLOY |
| CN101090986A (en) * | 2004-04-28 | 2007-12-19 | 蒂森克鲁普德国联合金属制造有限公司 | Iron-chrome-aluminum alloy |
Non-Patent Citations (2)
| Title |
|---|
| 唐锠世: "《高合金钢丝线》", 31 May 2008, article "Fe-Cr-Al基电热合金", pages: 169-170 * |
| 王振东: "《感应炉冶炼工艺技术》", 31 January 2012, article "铁铬铝电热合金的冶炼工艺及操作要点", pages: 341-347 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105420523A (en) * | 2014-09-19 | 2016-03-23 | 中山市鸿程科研技术服务有限公司 | Iron-chromium-aluminum alloy machining technology |
| CN107812521A (en) * | 2017-11-14 | 2018-03-20 | 江苏师范大学 | A kind of preparation method of bimetallic nano propane dehydrogenation catalyst |
| CN111424161A (en) * | 2020-03-17 | 2020-07-17 | 中北大学 | Heat treatment method for improving and stabilizing elongation of iron-chromium-aluminum wire |
| CN111424161B (en) * | 2020-03-17 | 2022-01-28 | 中北大学 | Heat treatment method for improving and stabilizing elongation of iron-chromium-aluminum wire |
| CN115786636A (en) * | 2022-12-15 | 2023-03-14 | 河钢股份有限公司 | Method for smelting high-purity iron-chromium-aluminum alloy by vacuum induction furnace |
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Application publication date: 20150429 |