CN111118318A - A kind of method for deoxidizing nickel-based superalloy - Google Patents
A kind of method for deoxidizing nickel-based superalloy Download PDFInfo
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- CN111118318A CN111118318A CN202010094544.4A CN202010094544A CN111118318A CN 111118318 A CN111118318 A CN 111118318A CN 202010094544 A CN202010094544 A CN 202010094544A CN 111118318 A CN111118318 A CN 111118318A
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 27
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 27
- 229910000601 superalloy Inorganic materials 0.000 title claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 15
- 239000000956 alloy Substances 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 12
- 238000003723 Smelting Methods 0.000 claims abstract description 11
- 239000011777 magnesium Substances 0.000 claims abstract description 10
- 239000010955 niobium Substances 0.000 claims abstract description 10
- 239000010936 titanium Substances 0.000 claims abstract description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 9
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 9
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 9
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910001098 inconels 690 Inorganic materials 0.000 claims abstract description 8
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011733 molybdenum Substances 0.000 claims abstract description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 7
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 7
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000007670 refining Methods 0.000 claims abstract description 7
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000006698 induction Effects 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 239000010703 silicon Substances 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052786 argon Inorganic materials 0.000 claims abstract description 4
- 239000011572 manganese Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 239000005441 aurora Substances 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005554 pickling Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 13
- 239000001301 oxygen Substances 0.000 abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 abstract description 13
- 239000007789 gas Substances 0.000 abstract description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 1
- 241001062472 Stokellia anisodon Species 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 27
- 239000000463 material Substances 0.000 description 17
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical group [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni as the principal constituent
- B23K35/304—Ni as the principal constituent with Cr as the next major constituent
-
- 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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- 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
- C22C19/053—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 30% but less than 40%
-
- 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
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
本发明公开了一种镍基高温合金脱氧的方法，该方法包括：精选冶炼原材料；采用ZG‑0.025型真空感应熔炼炉熔炼Inconel690合金铸锭，其工艺参数为：抽真空至0.01Pa，10～15kW：10～20min；20～25kW直到熔化；真空度≤0.1Pa，精炼10min，电磁搅拌；真空下降低功率至5kW冷冻放气，再升温，反复2‑3次；高真空充入高纯氩气，调整温度，加入脱氧元素稀土镧和镁，电磁搅拌后加入微合金化元素硅、铝、钛、铌和钼及易挥发元素锰，电磁搅拌；降低功率，浇注，冷却取出铸锭，切除冒口。本发明得到的铸锭内部组织致密、化学成分均匀、无缩孔和缩松，铸锭氧含量≤10ppm。The invention discloses a method for deoxidizing a nickel-based superalloy. The method includes: selecting and smelting raw materials; using a ZG-0.025 vacuum induction melting furnace to smelt Inconel690 alloy ingots. The process parameters are: vacuuming to 0.01Pa, 10 ～15kW: 10～20min; 20～25kW until melting; vacuum degree ≤0.1Pa, refining for 10min, electromagnetic stirring; reduce power to 5kW under vacuum to freeze and deflate, then heat up, repeat 2-3 times; high vacuum is filled with high purity Argon gas, adjust the temperature, add deoxidizing elements rare earth lanthanum and magnesium, add microalloying elements silicon, aluminum, titanium, niobium and molybdenum and volatile element manganese after electromagnetic stirring, electromagnetic stirring; reduce power, pour, cool and take out the ingot, Cut off the riser. The ingot obtained by the invention has dense internal structure, uniform chemical composition, no shrinkage cavities and shrinkage porosity, and the oxygen content of the ingot is less than or equal to 10 ppm.
Description
Technical Field
The invention relates to the technical field of nickel-based superalloy deoxidation, in particular to a deoxidation method of vacuum induction melting, prefabrication of a magnesium oxide crucible and addition of rare earth lanthanum and magnesium.
Background
The nickel-based alloy has excellent corrosion resistance and high-temperature oxidation resistance, and is often used for equipment with harsh use conditions and high safety requirements. With the continuous and high-speed development of the economy of China, equipment manufacturing has already become the pillar industry of the economy of China, and the outstanding characteristics of the development of the equipment manufacturing industry are as follows: the parameters of the single machine equipment are higher and higher, the use conditions are more and more rigorous, and the requirements on the safety are higher and higher. Welding is a key manufacturing process in modern industry, and the quality of a welded joint is key to ensuring the safety of industrial equipment. In order to meet the increasing performance requirements of large-scale industrial equipment, the domestic demand for nickel-based welding materials is rapidly increased, and at present, the demand for the nickel-based welding materials is increased from 300-400 tons/year ten years ago to 3000-4000 tons/year, and the demand is increased by ten times.
The high sensitivity of welding cracks, the great influence of trace elements on the performance of joints and the high sensitivity of welding pores are important characteristics of nickel-based welding materials and are also technical keys for material development. The main means for solving the technical problems is to strictly control the gas content and the component fluctuation of the welding material and strictly limit the content of impurity elements, namely to develop a high-purity welding material, and technically, vacuum smelting and refining processes (such as AOD, VOD, ESR and the like) are usually adopted. Due to the demand, domestic top-level steel enterprises have the technical capability of producing nickel-based welding materials, do not care about the development of the nickel-based welding materials, and do not have related products; and although a few small-sized enterprises pay attention to the market of the nickel-based welding material, the qualified special nickel-based welding material is difficult to develop due to limited technical strength, so that the existing nickel-based welding material basically depends on import.
Another characteristic of the nickel-based welding material is that the joint quality and the stability of the welding process are closely related, and the technical development trend is that the ratio of automatic welding is higher and higher, which not only requires that the welding material (such as a welding wire) meets the corresponding component requirements, but also requires that the welding wire has excellent process properties, such as the stability of the surface state, the geometric dimension and the physical properties of the welding wire. These requirements place higher demands on the manufacturing process of the welding wire, and new demands on the aspects of the surface roughness control, the surface coating of the welding wire, the wire drawing process and the like are placed. The technology is mastered by a few large international companies, so that products can smoothly enter the Chinese market; there is no related production experience in China, and in order to realize the localization of the nickel-based welding material, the key technology needs to be mastered through development and development.
The harm of oxygen in the nickel-based alloy is mainly reflected by: (1) the dissolved oxygen existing in the alloy melt oxidizes the added alloy elements, increases the element burning loss and improves the inclusion content. (2) In the solidification process, the separated oxygen reacts with carbon in the melt to generate carbon monoxide, so that air holes and porosity are formed in the cast ingot. (3) The oxygen precipitated by the temperature reduction oxidizes the alloying elements in the steel to form the endogenous inclusions. (4) Oxygen energy separated out in the form of ferrous oxide and ferrous sulfide form a low-melting-point eutectic substance in the solidification process, and the low-melting-point eutectic substance is distributed along a grain boundary, so that hot brittleness in steel ingot hot processing is caused. The shape, quantity, size and distribution of the inclusions have obvious influence on the processing performance and the service performance of the steel. Therefore, the control and reduction of the content of oxygen element are the key points of the vacuum smelting related technology and the nickel-based welding material technology, and the method is carried out aiming at the technical problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method for deoxidizing a nickel-based superalloy, which can obtain a compact alloy ingot with ultralow oxygen content.
The invention is realized by the following technical scheme:
a method of deoxidizing a nickel-base superalloy, comprising:
(1) selecting smelting raw materials including pure iron, aurora nickel, metal chromium, metal molybdenum, silicon, metal manganese, metal niobium and titanium, pickling and derusting the surface of the pure iron, drying the raw materials, and drying an ingot mold, a heat preservation cap and a pouring cup at high temperature;
(2) an Inconel690 alloy ingot is smelted by adopting a ZG-0.025 type vacuum induction smelting furnace, and the process parameters are as follows: vacuumizing to 0.01Pa, and 10-15 kW: 10-20 min; 20-25 kW until melting; refining for 10min under the condition that the vacuum degree is less than or equal to 0.1Pa, and electromagnetically stirring; reducing the vacuum power to 5kW, freezing, deflating, heating again, and repeating for 2-3 times; introducing high-purity argon in high vacuum, adjusting the temperature, adding deoxidizing elements, namely rare earth lanthanum and magnesium, electromagnetically stirring, adding microalloying elements, namely silicon, aluminum, titanium, niobium and molybdenum and volatile element manganese, and electromagnetically stirring; reducing power, pouring, cooling, taking out the cast ingot, and cutting off a dead head.
The nickel-based high-temperature alloy comprises the following chemical components in percentage by weight: c is less than or equal to 0.03, Si is less than or equal to 0.50, Mn is less than or equal to 1.0, P is less than or equal to 0.005, S is less than or equal to 0.005, Cr: 28.0-31.5, Fe: 8.0-12.0, Mo is less than or equal to 0.5, Co is less than or equal to 0.10, Cu is less than or equal to 0.10, Ti is less than or equal to 1.0, Al is less than or equal to 1.1, Nb: 0.5-1.0, others are less than or equal to 0.5, Ni: a substrate.
The sum of the contents of the rare earth lanthanum and the magnesium in the nickel-based superalloy ingot is less than or equal to 0.02 percent by mass fraction.
The method is characterized in that a prefabricated magnesium oxide crucible is adopted in the smelting process, rare earth lanthanum and magnesium are added in the later stage of refining to greatly deoxidize, the electromagnetic stirring effect is utilized to further fully deoxidize, and the deoxidizing reaction is carried out on the interface between the inner surface of the crucible and the alloy liquid and the inner part and the upper surface of the alloy liquid.
The invention has the advantages that:
(1) the special smelting process and the prefabricated magnesium oxide crucible are adopted, carbon is pre-deoxidized, rare earth lanthanum and magnesium are added in the later period of refining, and the method can greatly deoxidize and has very important effect on obtaining Inconel690 low-content oxygen.
(2) The Inconel690 with ultralow oxygen content reduces the amount of oxide inclusions in the ingot and greatly improves the mechanical properties of the nickel-based alloy.
(3) The Inconel690 nickel-based welding material with ultralow oxygen content can be applied to important fields such as nuclear power and the like, and plays a role in promoting domestic welding materials.
(4) The Inconel690 nickel-based alloy deoxidation method is relatively low in cost and relatively easy to realize, and further plays a reference role in obtaining ultra-low oxygen content for other nickel-based alloys.
Detailed Description
Example (b):
selecting smelting raw materials including pure iron, aurora nickel, metal chromium, metal molybdenum, metal manganese, niobium and titanium, pickling and derusting the surface of the pure iron, drying the raw materials, adding the raw materials into a crucible, and drying the ingot mold, a heat preservation cap and a pouring cup at high temperature and putting the ingot mold, the heat preservation cap and the pouring cup into a hearth. An Inconel690 alloy ingot is smelted by adopting a ZG-0.025 type vacuum induction smelting furnace, and the process parameters are as follows: vacuumizing to 0.01Pa, 12 kW: 15 min; 22kW until melting; refining for 10min under the vacuum degree of 0.1Pa, and electromagnetically stirring; pre-deoxidizing by using carbon in the raw material; reducing the vacuum power to 5kW, freezing, deflating, heating again, and repeating for 3 times; introducing high-purity argon in high vacuum, adjusting the temperature, adding deoxidizing elements of rare earth lanthanum (0.01%) and magnesium (0.01%), electromagnetically stirring, adding microalloying elements of aluminum, titanium, niobium and molybdenum and volatile element of manganese, and electromagnetically stirring; reducing power, pouring, cooling, taking out the cast ingot, and cutting off a dead head. And (3) removing oxide skin on the surface of the cast ingot by a mechanical processing vehicle to obtain a smooth surface cast ingot, analyzing chemical elements, and finally forging and drawing the cast ingot into a welding wire with a certain specification.
The oxygen element analysis adopts an infrared absorption method (national standard GB/T11261-.
The chemical composition of the nickel-base superalloy ingot obtained in this example in wt% (mass fraction) is as follows: o: 0.0008, La: 0.0041, Mg: 0.005, S: 0.0010, P: 0.0015, N: 0.0015, H: 0.0002, C: 0.011, Si: 0.12, Mn: 0.71, Cr: 29.45, Fe: 9.78, Mo: 0.37, Co: 0.01, Cu: 0.005, Ti: 0.82, Al:0.75, Nb: 0.73, Ni: a substrate.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.
Claims (3)
1. A method of deoxidizing a nickel-base superalloy, comprising:
(1) selecting smelting raw materials including pure iron, aurora nickel, metal chromium, metal molybdenum, silicon, metal manganese, metal niobium and titanium, pickling and derusting the surface of the pure iron, drying the raw materials, and drying an ingot mold, a heat preservation cap and a pouring cup at high temperature;
(2) an Inconel690 alloy ingot is smelted by adopting a ZG-0.025 type vacuum induction smelting furnace, and the process parameters are as follows: vacuumizing to 0.01Pa, and 10-15 kW: 10-20 min; 20-25 kW until melting; refining for 10min under the condition that the vacuum degree is less than or equal to 0.1Pa, and electromagnetically stirring; reducing the vacuum power to 5kW, freezing, deflating, heating again, and repeating for 2-3 times; introducing high-purity argon in high vacuum, adjusting the temperature, adding deoxidizing elements, namely rare earth lanthanum and magnesium, electromagnetically stirring, adding microalloying elements, namely silicon, aluminum, titanium, niobium and molybdenum and volatile element manganese, and electromagnetically stirring; reducing power, pouring, cooling, taking out the cast ingot, and cutting off a dead head.
2. The method of deoxidizing a nickel-base superalloy as in claim 1, wherein the nickel-base superalloy has a chemical composition in weight percent as follows: c is less than or equal to 0.03, Si is less than or equal to 0.50, Mn is less than or equal to 1.0, P is less than or equal to 0.005, S is less than or equal to 0.005, Cr: 28.0-31.5, Fe: 8.0-12.0, Mo is less than or equal to 0.5, Co is less than or equal to 0.10, Cu is less than or equal to 0.10, Ti is less than or equal to 1.0, Al is less than or equal to 1.1, Nb: 0.5-1.0, others are less than or equal to 0.5, Ni: a substrate.
3. The method of claim 1, wherein the ni-based superalloy ingot comprises 0.02% or less of the sum of the rare earth lanthanum and magnesium by mass.
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| CN202010094544.4A CN111118318A (en) | 2020-02-16 | 2020-02-16 | A kind of method for deoxidizing nickel-based superalloy |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112553403A (en) * | 2020-12-24 | 2021-03-26 | 广东石油化工学院 | Method for smelting and deoxidizing stainless steel welding material |
| CN112725659A (en) * | 2020-12-22 | 2021-04-30 | 丹阳市曙光镍材有限公司 | Nickel alloy casting process based on intermediate frequency furnace |
| CN113699399A (en) * | 2021-08-31 | 2021-11-26 | 山东瑞泰新材料科技有限公司 | Purifying smelting process of nickel-based high-temperature alloy without aluminum and titanium |
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| CN112725659A (en) * | 2020-12-22 | 2021-04-30 | 丹阳市曙光镍材有限公司 | Nickel alloy casting process based on intermediate frequency furnace |
| CN112553403A (en) * | 2020-12-24 | 2021-03-26 | 广东石油化工学院 | Method for smelting and deoxidizing stainless steel welding material |
| CN113699399A (en) * | 2021-08-31 | 2021-11-26 | 山东瑞泰新材料科技有限公司 | Purifying smelting process of nickel-based high-temperature alloy without aluminum and titanium |
| CN114645161A (en) * | 2022-03-09 | 2022-06-21 | 中国地质大学（武汉） | A kind of high oxidation resistance nickel-based alloy bulk material and preparation method thereof |
| CN114645161B (en) * | 2022-03-09 | 2022-11-29 | 中国地质大学（武汉） | High-oxidation-resistance nickel-based alloy block material and preparation method thereof |
| CN115305368A (en) * | 2022-07-20 | 2022-11-08 | 西安聚能高温合金材料科技有限公司 | Preparation method of Fe-Ni-Co-based high-temperature alloy GH907 alloy ingot |
| CN115305368B (en) * | 2022-07-20 | 2023-11-14 | 西安聚能高温合金材料科技有限公司 | Preparation method of Fe-Ni-Co-based superalloy GH907 alloy ingot |
| CN116254431A (en) * | 2023-02-15 | 2023-06-13 | 西部超导材料科技股份有限公司 | Preparation method of high-temperature alloy GH4065A high-purity induction ingot |
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