CN101643876B - Super-pure smelting method for industrially producing Incone1690 alloy - Google Patents
Super-pure smelting method for industrially producing Incone1690 alloy Download PDFInfo
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- CN101643876B CN101643876B CN2008100127312A CN200810012731A CN101643876B CN 101643876 B CN101643876 B CN 101643876B CN 2008100127312 A CN2008100127312 A CN 2008100127312A CN 200810012731 A CN200810012731 A CN 200810012731A CN 101643876 B CN101643876 B CN 101643876B
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- 239000000956 alloy Substances 0.000 title claims abstract description 68
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003723 Smelting Methods 0.000 title abstract description 10
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 20
- 230000023556 desulfurization Effects 0.000 claims abstract description 20
- 238000007670 refining Methods 0.000 claims abstract description 18
- 239000001301 oxygen Substances 0.000 claims abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 230000006698 induction Effects 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims description 29
- 230000008018 melting Effects 0.000 claims description 29
- 235000003599 food sweetener Nutrition 0.000 claims description 13
- 239000003765 sweetening agent Substances 0.000 claims description 13
- 229910001098 inconels 690 Inorganic materials 0.000 claims description 10
- 238000009833 condensation Methods 0.000 claims description 9
- 230000005494 condensation Effects 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 229910018107 Ni—Ca Inorganic materials 0.000 claims description 8
- 239000005864 Sulphur Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000011819 refractory material Substances 0.000 claims description 5
- 229910018505 Ni—Mg Inorganic materials 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000006392 deoxygenation reaction Methods 0.000 claims description 3
- 230000003009 desulfurizing effect Effects 0.000 abstract 3
- 238000005266 casting Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 abstract 1
- 229910052717 sulfur Inorganic materials 0.000 abstract 1
- 239000011593 sulfur Substances 0.000 abstract 1
- 238000005275 alloying Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of vacuum induction smelting, and relates to an improvement on a smelting process for industrially producing Incone1690 alloy, in particular to a super-pure smelting process for industrially producing Incone1690 alloy. The process uses a CaO fireproof material with high purity (CaO is more than 98.5 percent) and good thermodynamic stability as a crucible material for the vacuum induction smelting. The specific smelting process comprises charging, smelting period, refining period, condensing, deoxidizing and desulfurizing period and casting, whereinin the refining period, effective deoxidization and desulfurization are carried out on the wall part of a crucible and the surface of molten steel by improving the refining temperature and strengthening the thermodynamic and kinetic conditions of deoxidization and desulfurization; and in the deoxidizing and desulfurizing period, final deoxidization and desulfurization are carried out for the alloy by adding strong deoxidizing and desulfurizing agent so as to further reduce the contents of oxygen and sulfur in the alloy below 10 ppm.wt. The process effectively improves the high-temperature plasticity of the alloy, improves the thermal processing performance of the alloy, and obtains the high-quality alloy.
Description
Technical field
The present invention relates to the vacuum induction melting field, be specially a kind of ultrapure clean smelting process of suitability for industrialized production I-690 alloy.
Background technology
The Inconel690 alloy is U.S.'s trade mark, and its main component scope is as follows:
Usually industrialized vacuum induction melting production Inconel690 alloy is employed is MgO or MgO-Al
2O
3Be the crucible of refractory materials, can't realize high temperature deoxidation in refining period, desulfurization, melting does not add strong deoxidation, sweetening agent latter stage yet.Alloy oxygen, the sulphur content of generally producing is approximately about 20ppm.wt (weight), can't reach ultrapure clean.Therefore, the high-temp plastic of alloy is lower, can't carry out ideal hot-work to alloy, makes the hot-work finished product rate of alloy lower.
Summary of the invention
The object of the invention provides a kind of ultrapure clean smelting process of suitability for industrialized production I-690 alloy, adopt this method can produce oxygen, sulphur content ultrapure clean Inconel690 alloy less than 10ppm, improve the high-temp plastic of alloy, improved the hot workability of alloy.
Technical scheme of the present invention is:
The ultrapure clean smelting process of a kind of suitability for industrialized production Inconel690 alloy (hereinafter to be referred as the I-690 alloy), (the good CaO refractory materials of CaO＞98.5wt%), thermodynamic stability is as the crucible material of melting to use high purity; Adopt the method for vacuum induction melting, concrete melting technology is: charging → melting period → refining period → condensation → deoxidation, desulfurization the phase → cast;
Refining period: the advantage of utilizing calcareous crucible self, effectively improve refining temperature, can carry out refining at 1650 ℃～1730 ℃, be incubated 10～30 minutes, more traditional crucible exceeds 50 ℃～100 ℃, created the thermodynamics and kinetics condition of better deoxidation, desulfurization, made the I-690 alloy by the surface deoxidation of sidewall of crucible and molten steel, desulfurization.
The alloy condensation is cooled to fusing point with the I-690 alloy, can realize certain deoxidation, denitrification effect along with temperature reduces the principle that reduces in the condensation process by oxygen, nitrogen solubility in the alloy.
Deoxidation, desulfurization phase, by adding strong deoxidation, sweetening agent, alloy is carried out the final deoxygenation desulfurization, further reduce oxygen, sulphur content in the alloy.
Among the present invention, reductor is Ni-Ca or Ni-Mg master alloy, and sweetening agent is the Ni-Ca master alloy.
In the vacuum induction melting processing method provided by the invention, the mechanism of technological process is as follows:
(1) the alloy melting phase: melting principal element under vacuum by good carbon of this stage-oxygen reaction, reaches the certain deoxidation of alloy, denitrogenation purpose.
(2) the refining and modifying phase: adopt the refining system of high temperature, high vacuum, utilize the good stirring of induction melting, increase the velocity of diffusion of oxygen, sulphur in the molten steel, strengthen the thermodynamics and kinetics of deoxidation, desulfurization, by sidewall of crucible and molten steel surface deoxidation, desulfurization.
(3) the alloy condensation phase: with the reduction of alloy liquid temp, the solubleness of oxygen, nitrogen reduces in the alloy, realizes certain deoxidation, denitrification effect.
(4) deoxidation, desulfurization phase: under argon shield atmosphere, in molten steel, add strong deoxidation, sweetening agent, further realize reinforcement deoxidation, the desulfurization of alloy.
Advantage of the present invention:
1, the present invention uses high purity (the good CaO refractory materials of CaO＞98.5wt%), thermodynamic stability has guaranteed that as the crucible material of vacuum induction melting the ultra-pure purification melting technology is achieved.
2, the present invention effectively reduces oxygen, sulphur content in the alloy by the method that refining period and deoxidation, desulfurization phase combine, and guarantees the ultrapure clean of alloy.
3, appearance of the present invention effectively improves the purity of I-690 alloy, and then improves the high-temp plastic of alloy, has improved the hot workability of alloy.
Embodiment
Embodiment 1
Adopt the crucible of high purity, the knotting of Thermodynamically stable CaO refractory materials, carry out the melting of suitability for industrialized production I-690 alloy, melting technology comprises: charging → melting period → refining period → condensation → deoxidation, desulfurization the phase → cast; Wherein, charging, melting period, be cast for the employing routine techniques.Detailed process is:
(1) crucible of melting adopts CaO knotting 500kg crucible, CaO purity 〉=98.5wt%;
(2) alloy raw material:, get alloying elements such as Ni plate, pure Fe, Metal Cr, C, deoxidation, sweetening agent according to the requirement of composition.
In this step, reductor is the Ni-Ca master alloy: Ni 80wt%, Ca 20wt%; Perhaps, reductor is the Ni-Mg master alloy: Ni 80wt%, Mg 20wt%; Sweetening agent is the Ni-Ca master alloy: Ni 80wt%, Ca 20wt%.
(3) alloy shove charge: with main raw material Ni, Cr, C, the Fe crucible of packing into, Ti, Al and deoxidation, sweetening agent are packed the material alloying bucket into not in the apposition;
(4) alloy melting: close stove evacuation to beginning to send electricity less than 0.8Pa, under 200KW 20 minutes earlier, back 360KW was to changing clearly;
(5) refining and modifying: after alloying is clear, under 360KW, be warming up to 1710 ℃ in 5 minutes, be incubated refining in 20 minutes;
(6) alloy condensation: the intact power failure of refining is refrigerated to alloy melting point following (the molten steel surface solidification is stirred crucible and do not had Molten Steel Flow);
Ti, Al all added before adding end-deoxidizer, whole sweetening agent, and titanium sponge adds with granular form, and aluminium adds with bulk form.
(7) alloy final deoxygenation, desulfurization: close vacuum valve; feed argon shield; send electric 360KW clear the refrigerated molten steel to changing; fall power and add deoxidation, sweetening agent to 80KW; 280KW stirred one minute, continued the 80KW insulation, vacuumized (vacuum tightness is less than 1Pa) simultaneously 10 minutes; with the unnecessary deoxidation in place to go, sweetening agent (the molten steel surface film oxide is washed open fully, reaches no membrane stage).
In this step, reductor is the Ni-Ca master alloy: Ni 80wt%, Ca 20wt%; Perhaps, reductor is the Ni-Mg master alloy: Ni 80wt%, Mg 20wt%; Sweetening agent is the Ni-Ca master alloy: Ni 80wt%, Ca 20wt%.(8) alloy cast: the cooling that has a power failure, treat that molten steel send electric 360KW when stopping to flow, adjust the temperature cast.The Inconel690 alloying constituent of present embodiment melting sees the following form:
Table 1 vacuum induction melting Inconel690 alloying constituent (wt%)
| Smelt heat (batch) number | C | Cr | Fe | Al | Ti | P | S | O | Ni |
| 06-261 | 0.015 | 29.55 | 10.4 | 0.43 | 0.36 | 0.0035 | 0.0005 | 0.0003 | Surplus |
| 06-262 | 0.020 | 29.59 | 9.84 | 0.46 | 0.33 | 0.0033 | 0.0006 | 0.0004 | Surplus |
As seen, use 500 kilograms of I-690 alloy ingot shapes of melting of the present invention, oxygen, sulphur content have obtained high purity all less than 10ppm.
Claims (1)
1. the ultrapure clean melting method of a suitability for industrialized production Inconel690 alloy, it is characterized in that, use the crucible material of CaO refractory materials as melting, CaO purity 〉=98.5wt%, adopt the method for vacuum induction melting, obtain oxygen, sulphur content all less than the ultrapure clean Inconel690 alloy of 10ppm;
Vacuum induction melting comprises: charging → melting period → refining period → condensation → deoxidation, desulfurization the phase → cast;
The refining period of described alloy: utilize the advantage of calcareous crucible self, carry out refining, be incubated 10-30 minute, make the Inconel690 alloy by the surface deoxidation of sidewall of crucible and molten steel, desulfurization at 1650 ℃～1730 ℃;
The condensation of described alloy: the Inconel690 alloy is cooled to fusing point, realizes deoxidation, denitrogenation in the condensation process along with temperature reduces the principle that reduces by oxygen, nitrogen solubility in the alloy;
The deoxidation of described alloy, desulfurization phase, by adding strong deoxidation, sweetening agent, alloy is carried out the final deoxygenation desulfurization, further reduce oxygen, nitrogen content in the alloy; Wherein, reductor is Ni-Ca or Ni-Mg master alloy, and sweetening agent is the Ni-Ca master alloy.
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| CN2008100127312A CN101643876B (en) | 2008-08-08 | 2008-08-08 | Super-pure smelting method for industrially producing Incone1690 alloy |
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| CN2008100127312A CN101643876B (en) | 2008-08-08 | 2008-08-08 | Super-pure smelting method for industrially producing Incone1690 alloy |
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| CN101643876B true CN101643876B (en) | 2011-02-02 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014388B (en) * | 2012-12-26 | 2014-12-10 | 中国科学院金属研究所 | Large-tonnage low-cost ultraclean melting method of producing Inconel690 alloy |
| CN106319255B (en) * | 2015-07-06 | 2018-09-21 | 中国科学院金属研究所 | The sublimate smelting process of nickel base superalloy |
| CN108559860B (en) * | 2018-06-11 | 2019-08-27 | 江苏集萃先进金属材料研究所有限公司 | A kind of device and method for nickel-base alloy vacuum induction melting high-efficiency desulfurization |
| CN108950307A (en) * | 2018-07-23 | 2018-12-07 | 江苏美特林科特殊合金股份有限公司 | A kind of nickel calcium intermediate alloy and the preparation method and application thereof |
| CN110872653B (en) * | 2018-09-04 | 2021-08-10 | 中国科学院金属研究所 | Smelting method for controlling nitrogen content in Inconel690 alloy |
| CN111074102A (en) * | 2020-02-16 | 2020-04-28 | 广东石油化工学院 | Method for desulfurizing nickel-based high-temperature alloy |
| CN111187929A (en) * | 2020-02-16 | 2020-05-22 | 广东石油化工学院 | Method for denitrifying nickel-based superalloy |
| CN117385214B (en) * | 2023-12-11 | 2024-06-04 | 中国航发北京航空材料研究院 | Nickel-based superalloy deoxidizing and desulfurizing method based on non-calcareous refractory crucible |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102879A (en) * | 1985-04-26 | 1986-11-05 | 三井造船株式会社 | Iron-cobalt that sulphur, oxygen and nitrogen content are low-and the production method of iron-based alloys |
| CN1194961A (en) * | 1997-04-01 | 1998-10-07 | 中国科学院金属研究所 | Method for manufacturing high-purity crystallized wet-proof calcium oxide products |
| CN1360071A (en) * | 2000-12-21 | 2002-07-24 | 中国科学院金属研究所 | High-temp vacuum induction smelting and desulfurizing technology for preparing super-purity alloy |
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- 2008-08-08 CN CN2008100127312A patent/CN101643876B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102879A (en) * | 1985-04-26 | 1986-11-05 | 三井造船株式会社 | Iron-cobalt that sulphur, oxygen and nitrogen content are low-and the production method of iron-based alloys |
| CN1194961A (en) * | 1997-04-01 | 1998-10-07 | 中国科学院金属研究所 | Method for manufacturing high-purity crystallized wet-proof calcium oxide products |
| CN1360071A (en) * | 2000-12-21 | 2002-07-24 | 中国科学院金属研究所 | High-temp vacuum induction smelting and desulfurizing technology for preparing super-purity alloy |
Non-Patent Citations (1)
| Title |
|---|
| 牛建平等.镍基高温合金的脱氧与脱硫.《新技术新工艺》.2002,(第2期),第25-26页. * |
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