EP3720982A1 - Method for preparing a nickel-based alloy - Google Patents
Method for preparing a nickel-based alloyInfo
- Publication number
- EP3720982A1 EP3720982A1 EP18826925.2A EP18826925A EP3720982A1 EP 3720982 A1 EP3720982 A1 EP 3720982A1 EP 18826925 A EP18826925 A EP 18826925A EP 3720982 A1 EP3720982 A1 EP 3720982A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- max
- block
- var
- temperature
- electrode
- 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
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 50
- 239000000956 alloy Substances 0.000 title claims abstract description 50
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 31
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 230000035882 stress Effects 0.000 claims abstract description 9
- 230000032683 aging Effects 0.000 claims abstract 3
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 230000007547 defect Effects 0.000 claims description 9
- 230000001680 brushing effect Effects 0.000 claims description 6
- 238000005554 pickling Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 2
- 238000003856 thermoforming Methods 0.000 claims description 2
- 238000002604 ultrasonography Methods 0.000 claims 1
- 239000000155 melt Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005204 segregation Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005261 decarburization Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000010313 vacuum arc remelting Methods 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- JXSJBGJIGXNWCI-UHFFFAOYSA-N diethyl 2-[(dimethoxyphosphorothioyl)thio]succinate Chemical compound CCOC(=O)CC(SP(=S)(OC)OC)C(=O)OCC JXSJBGJIGXNWCI-UHFFFAOYSA-N 0.000 description 1
- 238000009847 ladle furnace Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229910001247 waspaloy Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/20—Arc remelting
-
- 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
-
- 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
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
Definitions
- the invention relates to a method for producing a nickel-based alloy.
- EP 1 377 690 B1 discloses a process for producing a nickel-base superalloy which is substantially free from positive and negative segregation, the process comprising:
- the nickel-based alloy preferably relates to Alloy 718 or Alloy 706.
- the invention has for its object to provide an alternative, more cost-effective method for producing a nickel-based alloy, by means of which an improvement of the microstructure and a reduction of defects that are introduced in the last remelting step in the material is possible to meet future customer requirements become.
- costs which arise through complex process control between the first and the second remelting are to be avoided.
- the quality can be significantly improved by avoiding melting and remelting errors.
- This object is achieved by a method for producing a nickel-based alloy by generating an electrode by VIM, VOF or VLF,
- the electrode is subjected to a heat treatment in a temperature range between 500 and 1300 ° C for a period of 10 to 336 hours in a furnace for reducing stresses and overaging, wherein at least 10 hours and a maximum of 48 hours in the temperature range of 1000 ° C to 1300 ° C. is heat treated
- the electrode is cooled in air or in the oven to a temperature between room temperature and less than 900 ° C,
- the cooled electrode is then remelted by ESC at a rate of 3.0 to 10 kg / minute to form an ESU block, the ESU block cooled in air or in the oven to a temperature between room temperature and less than 900 ° C,
- the ESU block again with a remelting rate of 3.0 to 10 kg / minute And a fluctuation rate of the remelting rate of less than 15%, better still 10%, ideally 5%, remelted by VAR, the remelted VAR block of a heat treatment in the temperature range between 500 and 1250 ° C for a period of 10 to 336 hours, the VAR block is then brought to the desired product shape and dimension by hot and / or cold forming.
- the heat treatment step after ESC remelting is dispensed with the refining rate is specified more precisely.
- the heat treatment thus takes place exclusively at the base electrode and not, as described in the prior art, at the ESU block.
- the material thus produced has a much lower expression of remelting errors.
- the targeted heat treatment of the VIM blocks reduces internal stresses and eliminates segregation defects. This has a positive effect on the subsequent remelting steps ESU and VAR.
- This object is also preferably achieved by a method for producing a nickel-based alloy by generating an electrode by VIM,
- the electrode is placed in an oven before it is colder than 200 ° C, ideally before it is colder than 250 ° C
- the electrode is subjected to a heat treatment in a temperature reducing temperature range between 500 and 1250 ° C for 10 to 336 hours in an oven for reducing stresses and overheating, the temperature of the electrode in air or in the oven is between room temperature and less than 900 ° C is cooled,
- the surface of the electrode is machined to remove defects and to clean (eg by brushing, grinding, pickling, separating, peeling, etc.), the cooled electrode is subsequently remelted by ESC at a rate of reflow of 3.0 to 10 kg / minute to form an ESU block of 400 to 1500 mm diameter,
- the ESU block is cooled in air or in the oven to a temperature between room temperature and less than 900 ° C,
- the surface of the ESU block is machined to remove defects and to clean (e.g., by brushing, grinding, pickling, separating, peeling, etc.),
- the ESR block is cooled in air or in the oven to a temperature between room temperature and less than 870 ° C,
- the ESU block is remelted by VAR again at a remelt rate of 3.0 to 10 kg / minute and a remelting rate of less than 15%, better still 10%, ideally 5% to a VAR block of 400 to 1500mm diameter .
- the VAR ingot is placed in an oven before it is not colder than 200 ° C in the head region, ideally before it is colder than 250 ° C,
- the VAR block is cooled in air or in the oven to a temperature between room temperature and less than 900 ° C, or hot at more than 850 ° C is passed to a thermoforming process.
- the VAR block is then brought by hot and / or cold forming (eg forging, rolling, drawing,) to the desired product shape (eg block, rod, wire, sheet, strip, foil) and dimension.
- the electrode is subjected to a processing of the surface (eg by brushing, grinding, pickling, separating, peeling, etc.) before its first remelting.
- errors can be removed, which are not eliminated by the further remelting and for later applications of damage can be.
- the ESU block prior to its VAR remelting, is subjected to further processing of the surface (eg by brushing, grinding, pickling, separating, peeling, etc.), whereby errors can also be removed by the further remelting can not be eliminated.
- further processing of the surface eg by brushing, grinding, pickling, separating, peeling, etc.
- VAR remelting is performed directly.
- This method can be applied to any Ni alloy and especially for alloys according to Table 1.
- this alloy may also have higher Ni contents.
- Material produced by this manufacturing process has significantly fewer defects (50%) with a comparative defect size of 0.8 mm in an ultrasonic test.
- the process according to the invention should preferably be usable for the following alloys:
- Table 1 shows exemplary analysis ranges of the aforementioned alloys. Block formats> 400 mm (round and square) are achieved.
- VIM-ESU and VAR blocks can also be forged to electrode dimension to produce better flair homogeneity, which may be required depending on the alloy and block diameter.
- the hot forming to the required product shape and dimension can be done by the usual methods (forging, rolling, etc.).
- the blocks and rods produced by this process can be further fabricated by usual methods to Flalbzeugformen (rods, sheets, strips, foils, wires, etc.) on.
- the electrodes were generated by VIM.
- the electrodes were heat treated in a furnace in the temperature range between 500 ° C and 1300 ° C for a period of 10 to 72 hours to reduce stresses and to compensate for segregations.
- the temperature range of 1000 ° C to 1300 ° C were treated for at least 10 hours and a maximum of 48 hours.
- the electrode was cooled in air or in the oven to a temperature between room temperature and less than 900 ° C.
- the electrode was subjected to surface treatments such as grinding, etc.
- the electrodes were then remelted by ESC at a remelt rate of 3 to 6 kg / minute to form an ESU block,
- the ESU blocks were cooled in the oven to a temperature between room temperature and less than 900 ° C,
- the ESU blocks were remelted at a remelt rate of 3 to 6 kg / minute using VAR,
- VAR blocks were then heat treated in an oven in the temperature range between 500 and 1220 ° C for a period of 20 to 100 hours,
- VAR blocks were subsequently ground or processed into rods by hot or cold forming.
- VIM Vaccum Induction Melting (Vacuum Induction Melting)
- VOD Vaccum Oxygen Decarburization (Vacuum Oxygen Decarburization)
- VLF Vaccum Ladle Furnace (Vacuum Pans Oven)
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Plasma & Fusion (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017128663 | 2017-12-04 | ||
DE102018009375.2A DE102018009375A1 (en) | 2017-12-04 | 2018-11-29 | Process for producing a nickel-base alloy |
PCT/DE2018/100980 WO2019110050A1 (en) | 2017-12-04 | 2018-12-03 | Method for preparing a nickel-based alloy |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3720982A1 true EP3720982A1 (en) | 2020-10-14 |
Family
ID=64901253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18826925.2A Pending EP3720982A1 (en) | 2017-12-04 | 2018-12-03 | Method for preparing a nickel-based alloy |
Country Status (7)
Country | Link |
---|---|
US (1) | US11306380B2 (en) |
EP (1) | EP3720982A1 (en) |
JP (2) | JP7052036B2 (en) |
KR (1) | KR20200070403A (en) |
CN (1) | CN111225990B9 (en) |
DE (1) | DE102018009375A1 (en) |
WO (1) | WO2019110050A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112646955A (en) * | 2020-11-30 | 2021-04-13 | 中国科学院金属研究所 | Purification method and application of alloy steel |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020116868A1 (en) * | 2019-07-05 | 2021-01-07 | Vdm Metals International Gmbh | Nickel-cobalt alloy powder and method of manufacturing the powder |
DE102020116865A1 (en) * | 2019-07-05 | 2021-01-07 | Vdm Metals International Gmbh | Nickel-based alloy for powders and a process for producing a powder |
CN111876651B (en) * | 2019-08-28 | 2022-05-24 | 北京钢研高纳科技股份有限公司 | Large-size high-niobium high-temperature 706 alloy ingot and smelting process thereof |
CN111876649B (en) * | 2019-08-28 | 2022-05-24 | 北京钢研高纳科技股份有限公司 | Smelting process of high-niobium high-temperature alloy large-size ingot and high-niobium high-temperature alloy large-size ingot |
EP4023779A4 (en) | 2019-08-28 | 2023-09-20 | Gaona Aero Material Co., Ltd. | Smelting process for high-niobium high-temperature alloy large-size cast ingot, and high-niobium high-temperature alloy large-size cast ingot |
CN114752817B (en) * | 2022-04-08 | 2022-09-23 | 南京工程学院 | High-temperature alloy die material and preparation method and application thereof |
CN114921674B (en) * | 2022-05-11 | 2023-03-14 | 重庆材料研究院有限公司 | Vacuum induction melting method of 625 alloy |
CN115354249B (en) * | 2022-07-28 | 2023-09-01 | 清航空天(北京)科技有限公司 | Foil heat treatment process based on air dynamic pressure bearing |
CN116000134B (en) * | 2022-12-08 | 2023-10-27 | 北京钢研高纳科技股份有限公司 | GH4738 alloy cold drawn bar and preparation method and application thereof |
CN116219230B (en) * | 2022-12-16 | 2024-07-19 | 四川六合特种金属材料股份有限公司 | High-temperature alloy sealing plate material and preparation method thereof |
CN116497248A (en) * | 2023-04-28 | 2023-07-28 | 江苏隆达超合金航材有限公司 | Preparation method of GH3039 alloy electroslag ingot |
CN117385212B (en) * | 2023-12-08 | 2024-03-12 | 北京北冶功能材料有限公司 | Nickel-based high-temperature alloy foil with excellent medium-temperature strength and preparation method thereof |
CN117564200A (en) * | 2023-12-29 | 2024-02-20 | 江苏美特林科特殊合金股份有限公司 | Preparation method of short-process alloy forging |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6416564B1 (en) | 2001-03-08 | 2002-07-09 | Ati Properties, Inc. | Method for producing large diameter ingots of nickel base alloys |
JP2009170159A (en) | 2008-01-11 | 2009-07-30 | Panasonic Corp | Aa alkaline battery |
JP5263580B2 (en) * | 2008-05-08 | 2013-08-14 | 三菱マテリアル株式会社 | Ring disc for gas turbine |
AT512471B1 (en) | 2012-02-07 | 2014-02-15 | Inteco Special Melting Technologies Gmbh | TRANSPORT SYSTEM FOR SELF-INVERTING ELECTRODES |
CN104561664A (en) | 2014-12-09 | 2015-04-29 | 抚顺特殊钢股份有限公司 | Smelting technique of novel nickel-iron-base high-temperature alloy GH4169D |
US9765416B2 (en) | 2015-06-24 | 2017-09-19 | Ati Properties Llc | Alloy melting and refining method |
DE102015016729B4 (en) * | 2015-12-22 | 2018-10-31 | Vdm Metals International Gmbh | Process for producing a nickel-base alloy |
-
2018
- 2018-11-29 DE DE102018009375.2A patent/DE102018009375A1/en active Pending
- 2018-12-03 KR KR1020207015674A patent/KR20200070403A/en not_active IP Right Cessation
- 2018-12-03 CN CN201880066530.2A patent/CN111225990B9/en active Active
- 2018-12-03 US US16/757,810 patent/US11306380B2/en active Active
- 2018-12-03 JP JP2020526387A patent/JP7052036B2/en active Active
- 2018-12-03 WO PCT/DE2018/100980 patent/WO2019110050A1/en unknown
- 2018-12-03 EP EP18826925.2A patent/EP3720982A1/en active Pending
-
2021
- 2021-10-29 JP JP2021177629A patent/JP7374160B2/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112646955A (en) * | 2020-11-30 | 2021-04-13 | 中国科学院金属研究所 | Purification method and application of alloy steel |
Also Published As
Publication number | Publication date |
---|---|
JP2022023193A (en) | 2022-02-07 |
JP7052036B2 (en) | 2022-04-11 |
JP7374160B2 (en) | 2023-11-06 |
KR20200070403A (en) | 2020-06-17 |
DE102018009375A1 (en) | 2019-06-06 |
CN111225990B (en) | 2022-01-28 |
CN111225990A (en) | 2020-06-02 |
US11306380B2 (en) | 2022-04-19 |
CN111225990B9 (en) | 2022-03-01 |
JP2021502491A (en) | 2021-01-28 |
US20210371963A1 (en) | 2021-12-02 |
WO2019110050A1 (en) | 2019-06-13 |
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