CN115058629A - GH2026 alloy smelting process with high use proportion of return materials - Google Patents

GH2026 alloy smelting process with high use proportion of return materials Download PDF

Info

Publication number
CN115058629A
CN115058629A CN202210760996.0A CN202210760996A CN115058629A CN 115058629 A CN115058629 A CN 115058629A CN 202210760996 A CN202210760996 A CN 202210760996A CN 115058629 A CN115058629 A CN 115058629A
Authority
CN
China
Prior art keywords
alloy
molten steel
return material
smelting
use ratio
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.)
Granted
Application number
CN202210760996.0A
Other languages
Chinese (zh)
Other versions
CN115058629B (en
Inventor
闫森
栾吉哲
李爱民
张欢欢
刘猛
韩守业
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Avic Shangda Superalloy Materials Co ltd
Original Assignee
Avic Shangda Superalloy Materials Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Avic Shangda Superalloy Materials Co ltd filed Critical Avic Shangda Superalloy Materials Co ltd
Priority to CN202210760996.0A priority Critical patent/CN115058629B/en
Publication of CN115058629A publication Critical patent/CN115058629A/en
Application granted granted Critical
Publication of CN115058629B publication Critical patent/CN115058629B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each 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
    • C22C1/02—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
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/03—Making non-ferrous alloys by melting using master alloys
    • 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
    • C22C19/056—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%
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

The invention relates to the technical field of alloy smelting, and particularly discloses a GH2026 alloy smelting process with a high return material use ratio. The smelting process comprises the following steps: carrying out chemical component analysis on the return material, and carrying out new material proportioning according to the component requirement of the GH2026 alloy; heating and melting the return material, and adding new materials except titanium and boron when the return material is melted by 60-80 wt%, and melting to obtain molten steel; refining the molten steel to obtain refined molten steel; finely adjusting the content of elements except boron in the refined molten steel, and finely adjusting the content of boron in the refined molten steel to obtain standard molten steel; and casting the standard molten steel in an argon atmosphere to obtain the GH2026 alloy. According to the invention, the GH2026 alloy with short smelting period and accurate components is obtained through the precise control of the charging sequence, the temperature and the vacuum degree of each stage in the smelting process.

Description

GH2026 alloy smelting process with high use proportion of return materials
Technical Field
The invention relates to the technical field of alloy smelting, in particular to a GH2026 alloy smelting process with high use proportion of return materials.
Background
GH2026 alloy is American Refractaloy-26 brand, and is a precipitation strengthening type high-temperature alloy based on Ni-Co-Cr-Fe. The GH2026 alloy has excellent comprehensive performance, particularly excellent stress relaxation resistance and creep resistance, the long-term use temperature range is 540-570 ℃, the maximum use temperature can reach 675 ℃, and the GH2026 alloy has good plasticity at the use temperature, is an ideal material for fasteners and is mainly used for high-temperature parts such as supercritical turbine blades, ultra-supercritical turbine blades, fasteners and the like.
At present, when the GH2026 alloy is produced, all the added raw materials are pure metals, so that the components in the later stage of steelmaking can not meet the target requirements easily, the weight of the supplemented metal materials is more (about 80-100 kg/t), the mixed impurity elements cannot be completely removed, the purity of the alloy is reduced, and the deviation of the comprehensive properties of the alloy, such as strength and toughness, is large. In addition, because the content of the titanium in the alloy is close to 3.00 percent, segregation is easy to generate under the influence of the adding amount and the adding time in the steelmaking process, compounds such as titanium oxide, titanium carbonitride and the like are easy to form, the alloy contains higher oxygen and nitrogen elements, and the mechanical property and the subsequent hot working of the alloy are adversely affected.
The alloy has a large proportion of scrap and the like generated in the machining process after casting and scrap parts, and the scrap is collectively called return. However, a certain amount of inclusions such as oxides and carbonitrides are present in the returned material, and these inclusions are easily melted into the molten steel during the remelting process of the returned material and are difficult to separate. Moreover, when the use ratio of the return materials is high, the defects are difficult to overcome, and the quality of the GH2026 alloy is seriously affected. Therefore, the research on the alloy smelting method with high use ratio of the return materials has important significance for recycling the return materials and improving the economic benefit.
Disclosure of Invention
In view of the above, the invention provides a GH2026 alloy smelting process with a high return material use ratio, and by controlling the feeding sequence and the refining temperature, not only can the segregation of titanium be avoided, but also the inclusion and gas in the molten steel can be separated cleanly, and the GH2026 alloy with good comprehensive performance can be obtained.
In order to achieve the purpose of the invention, the embodiment of the invention adopts the following technical scheme:
a GH2026 alloy smelting process with high return material use ratio comprises the following steps:
step one, carrying out chemical component analysis on the return material, and carrying out new material proportioning according to the component requirement of the GH2026 alloy;
step two, heating and melting the return material, and adding new materials except titanium and boron when the return material is melted by 60-80 wt%, and melting to obtain molten steel;
step three, refining the molten steel under the conditions that the temperature is 1470-1560 ℃ and the vacuum degree is 1-3 Pa to obtain refined molten steel;
fourthly, carrying out content fine adjustment on elements except boron in the refined molten steel at 1470-1540 ℃, and carrying out content fine adjustment on the boron in the refined molten steel at 1480-1520 ℃ to obtain standard molten steel;
and fifthly, casting and electroslag remelting the standard molten steel under the argon atmosphere to obtain the GH2026 alloy.
Compared with the prior art, the GH2026 alloy smelting process with the high return material use ratio provided by the application has the following advantages:
according to the method, the addition sequence of the raw materials is controlled, the return materials are added firstly, and the new materials are added when the return materials are melted by 60-80 wt%, so that bridging is avoided after the new materials are added, the problem that the new materials cannot be completely melted is avoided, and the problem that the new materials are added into the molten steel to generate splashing can be avoided; meanwhile, fine adjustment is carried out on the content of the titanium element after refining, only a small amount of new titanium element (about 30kg/t) is needed to be added, the segregation coefficient is greatly reduced on the premise of ensuring the composition to meet, and the metallurgical quality of the GH2026 alloy is obviously improved; in addition, the temperature and the pressure in the refining period are controlled, so that impurities of refractory materials of the crucible are prevented from being melted into the molten steel, the impurities and gas in the molten steel can be fully floated, harmful elements such as lead, bismuth, hydrogen, oxygen and nitrogen in the molten steel are removed completely, and the GH2026 alloy with good comprehensive performance is obtained.
According to the GH2026 alloy with short smelting period and accurate component control, the problem of recycling a large amount of return materials of the alloy is solved, and remarkable economic benefits are generated.
The return material is obtained by cleaning a large amount of waste materials generated in the metal machining process and metal turning materials. The specific cleaning process can be the cleaning process in the patent name of "a rare precious metal turning material cleaning process" with the application number of CN 202111556516.0.
Optionally, the refining comprises 2-4 degassing cycles, and the degassing cycle time is 20 min-30 min.
Optionally, each degassing cycle includes a stirring step and a standing step, wherein the stirring step is performed for 5min to 15min, and the standing step is performed for 10min to 20 min.
Optionally, the stirring process adopts electromagnetic stirring, and the power of the electromagnetic stirring is 400KW to 800 KW.
The preferable refining process ensures that the inclusions and the gas float sufficiently, harmful elements such as lead, bismuth, hydrogen, oxygen, nitrogen and the like in the molten steel are removed completely through the CO bubble floating and vacuumizing processes, the uniformity and the qualification of the gas content are ensured, the oxygen content is less than or equal to 30ppm, the nitrogen content is less than or equal to 80ppm, and the product quality is stable.
Optionally, the melting conditions are: the temperature is 1490-1510 ℃, and the vacuum degree is 0-30 Pa.
Optionally, the weight ratio of the return material in the smelting raw material is 80-90%.
According to the method, the use proportion of the high-returning charge is selected, so that the use of brand-new metal materials is reduced, the component stability is good, the supplement amount in the later smelting period is small, the excessive impurity elements can be effectively prevented from being brought in, the performance fluctuation caused by insufficient period and insufficient floating in the later smelting period is avoided, and the quality stability is greatly improved; meanwhile, the return material with high occupation ratio is adopted, so that the economic benefit is obviously improved.
Optionally, the casting conditions are as follows: the temperature is 1480-1520 deg.c, the time is 5-8 min and the pressure is 2800-3200 Pa.
Optionally, in the fourth step, the content of the carbon element in the refined molten steel is finely adjusted at 1470-1540 ℃, and then the content of the remaining elements except the boron element is finely adjusted.
In the fourth step, the content of carbon element in the refined molten steel is firstly finely adjusted, and then the content of metal elements except boron such as Ni, Co, Cr, Ti, Mo and the like is finely adjusted.
Optionally, the new material comprises at least one of M-Ni, M-Co, M-Cr, M-Mo, Mo-Fe, M-Ti, pure iron, graphite electrode or ferroboron.
The M-Ni is Ni-9996 or Ni-9999; the M-Co is Co 9998; the above M-Cr is JCr 99-A.
The new material only comprises the elements of Ni, Co, Cr, Ti, Mo, C, Fe, B and the like.
Optionally, the standard molten steel comprises the following components in percentage by mass: c is less than or equal to 0.08 percent, Ni: 35.0% -39.0%, Co: 18.0-22.0%, Cr: 16.0-20.0%, Ti: 2.5% -3.0%, Mo: 2.5% -3.5%, B: 0.001-0.10 percent of Si, less than or equal to 1.5 percent of Mn, less than or equal to 1.0 percent of Mn, less than or equal to 0.25 percent of Al, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S, and the balance of Fe.
Further optionally, the standard molten steel comprises the following components in percentage by mass: c: 0.04%, Ni: 37.0%, Co: 20.0%, Cr: 18.0%, Ti: 2.85%, Mo: 3.0%, B: 0.005 percent, less than or equal to 1.0 percent of Si, less than or equal to 0.7 percent of Mn, less than or equal to 0.2 percent of Al, less than or equal to 0.015 percent of P, less than or equal to 0.03 percent of S, and the balance of Fe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The embodiment of the invention provides a GH2026 alloy smelting process with a high return material use ratio, wherein smelting raw materials comprise return materials and new materials, and the smelting process comprises the following steps:
step one, carrying out chemical component analysis on the return material, and carrying out new material proportioning according to the component requirement of a GH2026 alloy, wherein the weight ratio of the return material in the smelting raw material is 90%;
step two, heating and melting the return material under the conditions that the temperature is 1500 ℃ and the vacuum degree is 25Pa, and adding new materials except titanium and boron when the return material is melted by 70 wt% to obtain molten steel;
refining the molten steel under the conditions that the temperature is 1500 +/-5 ℃ and the vacuum degree is 2Pa to obtain refined molten steel, wherein the refining comprises 3 degassing cycles, each degassing cycle comprises a stirring process and a standing process, the stirring process lasts for 10min, the standing process lasts for 15min, and the stirring process adopts electromagnetic stirring with the power of 400 KW;
fourthly, finely adjusting the content of carbon elements in the refined molten steel at 1500 +/-5 ℃, then finely adjusting the content of metal elements except boron elements such as Ni, Co, Cr, Ti, Mo and the like, and finely adjusting the content of boron elements in the refined molten steel to obtain standard molten steel at 1520 ℃ after the content of the elements except boron elements is qualified; the standard molten steel comprises the following components in percentage by mass: c: 0.04%, Ni: 37.0%, Co: 20.0%, Cr: 18.0%, Ti: 2.85%, Mo: 3.0%, B: 0.005 percent of Si is less than or equal to 1.0 percent, Mn is less than or equal to 0.7 percent, Al is less than or equal to 0.2 percent, P is less than or equal to 0.015 percent, S is less than or equal to 0.03 percent, and the balance is Fe;
and step five, under the argon atmosphere, carrying out vacuum induction casting on the standard molten steel for 7.5min at the temperature of 1480 ℃ and under the pressure of 3000Pa, and then carrying out electroslag remelting, surface polishing and hot working to obtain the GH2026 alloy with the diameter of 150 mm.
Example 2
The embodiment of the invention provides a GH2026 alloy smelting process with a high return material use ratio, wherein smelting raw materials comprise a return material and a new material, and the smelting process comprises the following steps:
step one, carrying out chemical component analysis on the return material, and carrying out new material proportioning according to the component requirement of a GH2026 alloy, wherein the weight ratio of the return material in the smelting raw material is 80%;
step two, heating and melting the return material under the conditions that the temperature is 1490 ℃ and the vacuum degree is 5Pa, and adding new materials except titanium elements and boron elements when the return material is melted by 60 wt% to obtain molten steel;
refining the molten steel under the conditions that the temperature is 1480 +/-5 ℃ and the vacuum degree is 1Pa to obtain refined molten steel, wherein the refining comprises 4 degassing cycles, each degassing cycle comprises a stirring process and a standing process, the stirring process is carried out for 5min, the standing process is carried out for 20min, and the stirring process adopts electromagnetic stirring with the power of 800 KW;
fourthly, finely adjusting the content of carbon elements in the refined molten steel at 1480 +/-5 ℃, then finely adjusting the content of metal elements except boron elements such as Ni, Co, Cr, Ti, Mo and the like, and finely adjusting the content of boron elements in the refined molten steel at 1480 ℃ to obtain standard molten steel when the content of the elements except boron elements is qualified; the standard molten steel comprises the following components in percentage by mass: c: 0.04%, Ni: 37.0%, Co: 20.0%, Cr: 18.0%, Ti: 2.85%, Mo: 3.0%, B: 0.005 percent of Si is less than or equal to 1.0 percent, Mn is less than or equal to 0.7 percent, Al is less than or equal to 0.2 percent, P is less than or equal to 0.015 percent, S is less than or equal to 0.03 percent, and the balance is Fe;
and step five, in an argon atmosphere, carrying out vacuum induction casting on the standard molten steel for 5min at the temperature of 1520 ℃ and the pressure of 2800Pa, and then carrying out electroslag remelting, surface polishing and hot working to obtain the GH2026 alloy with the diameter of 150 mm.
Example 3
The embodiment of the invention provides a GH2026 alloy smelting process with a high return material use ratio, wherein smelting raw materials comprise return materials and new materials, and the smelting process comprises the following steps:
step one, carrying out chemical component analysis on the return material, and carrying out new material proportioning according to the component requirement of a GH2026 alloy, wherein the weight ratio of the return material in the smelting raw material is 85%;
step two, heating and melting the return material under the conditions that the temperature is 1510 ℃ and the vacuum degree is 15Pa, and adding new materials except titanium and boron when the return material is 80 wt% and melting to obtain molten steel;
refining the molten steel under the conditions that the temperature is 1540 +/-5 ℃ and the vacuum degree is 3Pa to obtain refined molten steel, wherein the refining comprises 2 degassing cycles, each degassing cycle comprises a stirring process and a standing process, the stirring process is carried out for 15min, the standing process is carried out for 15min, and the stirring process adopts electromagnetic stirring with the power of 600 KW;
step four, finely adjusting the content of carbon elements in the refined molten steel at 1530 +/-5 ℃, then finely adjusting the content of metal elements except boron elements such as Ni, Co, Cr, Ti, Mo and the like, and finely adjusting the content of boron elements in the refined molten steel at 1500 ℃ to obtain standard molten steel after the content of the elements except boron elements is qualified; the standard molten steel comprises the following components in percentage by mass: c: 0.04%, Ni: 37.0%, Co: 20.0%, Cr: 18.0%, Ti: 2.85%, Mo: 3.0%, B: 0.005 percent of Si is less than or equal to 1.0 percent, Mn is less than or equal to 0.7 percent, Al is less than or equal to 0.2 percent, P is less than or equal to 0.015 percent, S is less than or equal to 0.03 percent, and the balance is Fe;
and step five, in an argon atmosphere, casting the standard molten steel for 8min by adopting vacuum induction under the conditions that the temperature is 1500 ℃ and the pressure is 3200Pa, and then carrying out electroslag remelting, surface polishing and hot working to obtain the GH2026 alloy with the diameter of 150 mm.
In order to better illustrate the technical solution of the present invention, further comparison is made below by comparing examples of the present invention with comparative examples.
Comparative example 1
The comparative example provides a GH2026 alloy smelting process with a high return material use ratio, and the difference from the example 1 is only that: and in the third step, refining the molten steel under the conditions that the temperature is 1600 +/-5 ℃ and the vacuum degree is 2Pa to obtain refined molten steel, wherein the refining comprises 3 degassing cycles, each degassing cycle comprises a stirring process and a standing process, the time of the stirring process is 10min, the time of the standing process is 15min, and the stirring process adopts 400KW electromagnetic stirring.
Comparative example 2
The comparative example provides a GH2026 alloy smelting process with high return material use ratio, wherein return material and new material are added together, and heating and melting are carried out simultaneously, and the specific smelting process comprises the following steps:
step one, carrying out chemical component analysis on the return material, and carrying out new material proportioning according to the component requirement of a GH2026 alloy, wherein the weight ratio of the return material in the smelting raw material is 90%;
step two, heating and melting the return material and the new material under the conditions that the temperature is 1500 ℃ and the vacuum degree is 25Pa to obtain molten steel;
refining the molten steel under the conditions that the temperature is 1500 +/-5 ℃ and the vacuum degree is 2Pa to obtain refined molten steel, wherein the refining comprises 3 degassing cycles, each degassing cycle comprises a stirring process and a standing process, the stirring process is carried out for 10min, the standing process is carried out for 15min, and the stirring process adopts electromagnetic stirring with the power of 400 KW;
step four, finely adjusting the content of each element in the refining molten steel at 1500 +/-5 ℃ to obtain standard molten steel; the standard molten steel comprises the following components in percentage by mass: c: 0.04%, Ni: 37.0%, Co: 20.0%, Cr: 18.0%, Ti: 2.85%, Mo: 3.0%, B: 0.005 percent of Si is less than or equal to 1.0 percent, Mn is less than or equal to 0.7 percent, Al is less than or equal to 0.2 percent, P is less than or equal to 0.015 percent, S is less than or equal to 0.03 percent, and the balance is Fe;
and step five, under the argon atmosphere, carrying out vacuum induction casting on the standard molten steel for 7.5min at the temperature of 1480 ℃ and under the pressure of 3000Pa, and then carrying out electroslag remelting, surface polishing and hot working to obtain the GH2026 alloy with the diameter of 150 mm.
Comparative example 3
Comparative example 3 provides a GH2026 alloy prepared using a new metal feedstock, a sample from large superalloy materials, inc.
In order to better illustrate the characteristics of the GH2026 alloys provided by the embodiments of the present invention, the GH2026 alloys prepared in the following examples 1 to 3 and comparative examples 1 to 3 were subjected to chemical composition analysis and mechanical property detection, and the results are shown in table 1 and table 2 below.
TABLE 1 analysis results of chemical composition
Figure BDA0003720996510000081
Figure BDA0003720996510000091
As can be seen from Table 1, the GH2026 alloy smelting process with high return material use ratio is adopted, and the component stability is better on the premise of greatly reducing the use of new materials by controlling the refining conditions and the feeding sequence.
TABLE 2 results of mechanical Properties measurements
Figure BDA0003720996510000092
The detection method of the room-temperature stretching comprises the following steps: GB/T228.1-2010, wherein σ as defined above b Is tensile strength; sigma above 0.2 Yield strength at 0.2% elongation of the material; delta. above 5 The original gauge length is 5 times straightElongation in diameter; the above ψ is a shrinkage ratio.
The detection method of the persistence comprises the following steps: GB/T2039-2012, wherein Z is the face shrinkage.
As can be seen from Table 2, the GH2026 alloy smelting process with the high return material use ratio provided by the application reduces the use of new materials, has less supplement amount in the later smelting period, can effectively avoid excessive introduction of impurity elements, and has good comprehensive properties of the prepared GH2026 alloy.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A GH2026 alloy smelting process with high return material use ratio is characterized in that: the smelting raw materials comprise return materials and new materials, and the smelting process comprises the following steps:
step one, carrying out chemical component analysis on the return material, and carrying out new material proportioning according to the component requirement of the GH2026 alloy;
step two, heating and melting the return material, and adding new materials except titanium and boron when the return material is melted by 60-80 wt%, and melting to obtain molten steel;
step three, refining the molten steel under the conditions that the temperature is 1470-1560 ℃ and the vacuum degree is 1-3 Pa to obtain refined molten steel;
fourthly, carrying out content fine adjustment on elements except boron in the refined molten steel at 1470-1540 ℃, and carrying out content fine adjustment on the boron in the refined molten steel at 1480-1520 ℃ to obtain standard molten steel;
and fifthly, casting and electroslag remelting the standard molten steel under the argon atmosphere to obtain the GH2026 alloy.
2. The process for smelting a GH2026 alloy with a high return material use ratio according to claim 1, wherein the process comprises the following steps: the refining comprises 2-4 degassing cycles, and the time of each degassing cycle is 20-30 min.
3. The process for smelting a GH2026 alloy with a high return material use ratio according to claim 2, wherein the high return material use ratio comprises the following steps: each degassing cycle comprises a stirring process and a standing process, wherein the stirring process lasts for 5-15 min, and the standing process lasts for 10-20 min.
4. The process for smelting a GH2026 alloy with a high return material use ratio according to claim 3, wherein the high return material use ratio comprises the following steps: the stirring process adopts electromagnetic stirring, and the power of the electromagnetic stirring is 400 KW-800 KW.
5. The process for smelting the GH2026 alloy with the high return material use ratio according to claim 1, wherein the high return material use ratio comprises the following steps: the melting conditions are as follows: the temperature is 1490-1510 ℃, and the vacuum degree is 0-30 Pa.
6. The process for smelting a GH2026 alloy with a high return material use ratio according to claim 1, wherein the process comprises the following steps: the weight ratio of the return material in the smelting raw material is 80-90%.
7. The process for smelting the GH2026 alloy with the high return material use ratio according to claim 1, wherein the high return material use ratio comprises the following steps: the casting conditions are as follows: the temperature is 1480-1520 deg.c, the time is 5-8 min and the pressure is 2800-3200 Pa.
8. The process for smelting a GH2026 alloy with a high return material use ratio according to claim 1, wherein the process comprises the following steps: in the fourth step, the content of the carbon element in the refining molten steel is finely adjusted at 1470-1540 ℃, and then the content of the remaining elements except the boron element is finely adjusted.
9. The process for smelting the GH2026 alloy with the high return material use ratio according to claim 1, wherein the high return material use ratio comprises the following steps: the new material comprises at least one of M-Ni, M-Co, M-Cr, M-Mo, Mo-Fe, M-Ti, pure iron, graphite electrode or ferroboron.
10. The process for smelting a GH2026 alloy with a high return material use ratio according to claim 1, wherein the process comprises the following steps: the standard molten steel comprises the following components in percentage by mass: c is less than or equal to 0.08 percent, Ni: 35.0% -39.0%, Co: 18.0-22.0%, Cr: 16.0-20.0%, Ti: 2.5% -3.0%, Mo: 2.5% -3.5%, B: 0.001-0.10 percent of Si, less than or equal to 1.5 percent of Mn, less than or equal to 1.0 percent of Mn, less than or equal to 0.25 percent of Al, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S, and the balance of Fe.
CN202210760996.0A 2022-06-29 2022-06-29 GH2026 alloy smelting process with high use proportion of return materials Active CN115058629B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210760996.0A CN115058629B (en) 2022-06-29 2022-06-29 GH2026 alloy smelting process with high use proportion of return materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210760996.0A CN115058629B (en) 2022-06-29 2022-06-29 GH2026 alloy smelting process with high use proportion of return materials

Publications (2)

Publication Number Publication Date
CN115058629A true CN115058629A (en) 2022-09-16
CN115058629B CN115058629B (en) 2023-08-01

Family

ID=83203647

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210760996.0A Active CN115058629B (en) 2022-06-29 2022-06-29 GH2026 alloy smelting process with high use proportion of return materials

Country Status (1)

Country Link
CN (1) CN115058629B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116790924A (en) * 2023-08-25 2023-09-22 北京理工大学 Method for preparing refractory high-entropy alloy by remelting return materials through electron beam melting

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102719682A (en) * 2012-02-14 2012-10-10 攀钢集团江油长城特殊钢有限公司 Smelting method of GH901 alloy
CN111876649A (en) * 2019-08-28 2020-11-03 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
WO2021036226A1 (en) * 2019-08-28 2021-03-04 北京钢研高纳科技股份有限公司 Large-size high-niobium and high-temperature 706 alloy ingot and smelting process thereof
CN114369736A (en) * 2021-12-17 2022-04-19 北京科技大学 High-temperature alloy for improving use proportion of return materials and smelting process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102719682A (en) * 2012-02-14 2012-10-10 攀钢集团江油长城特殊钢有限公司 Smelting method of GH901 alloy
CN111876649A (en) * 2019-08-28 2020-11-03 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
WO2021036226A1 (en) * 2019-08-28 2021-03-04 北京钢研高纳科技股份有限公司 Large-size high-niobium and high-temperature 706 alloy ingot and smelting process thereof
WO2021036225A1 (en) * 2019-08-28 2021-03-04 北京钢研高纳科技股份有限公司 Smelting process for high-niobium high-temperature alloy large-size cast ingot, and high-niobium high-temperature alloy large-size cast ingot
CN114369736A (en) * 2021-12-17 2022-04-19 北京科技大学 High-temperature alloy for improving use proportion of return materials and smelting process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
彭建强: "高温合金材料在汽轮机高温部件上的应用", 东方汽轮机 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116790924A (en) * 2023-08-25 2023-09-22 北京理工大学 Method for preparing refractory high-entropy alloy by remelting return materials through electron beam melting
CN116790924B (en) * 2023-08-25 2023-11-17 北京理工大学 Method for preparing refractory high-entropy alloy by remelting return materials through electron beam melting

Also Published As

Publication number Publication date
CN115058629B (en) 2023-08-01

Similar Documents

Publication Publication Date Title
CN110578073B (en) Smelting method of GH4169 nickel-based alloy
CN109022925B (en) Method for reducing Laves phase in nickel-based superalloy steel ingot
CN110408846A (en) A kind of aerospace big specification high-tenacity GH2132 bar and preparation method thereof
CN114318109B (en) Method for smelting high-nitrogen die steel by using vacuum induction furnace and pressurized electroslag furnace
CN114657398A (en) Large-size nickel-based high-temperature alloy ingot difficult to deform and preparation method thereof
CN111549244A (en) Preparation method of Ti35 titanium alloy ingot
CN116590576A (en) Iron-nickel-based superalloy, ultrathin strip foil and preparation method
CN114540699B (en) High-performance hot-work die steel and preparation method thereof
CN115058629B (en) GH2026 alloy smelting process with high use proportion of return materials
CN113528924B (en) Nickel-niobium-chromium intermediate alloy and preparation method thereof
CN117230360B (en) Preparation method of single-vacuum 300M steel
CN112410573B (en) Slag system for smelting Ce-containing Fe-Ni soft magnetic alloy and use method thereof
CN112359251A (en) Preparation method and application of nickel-chromium-tungsten intermediate alloy
CN115558825B (en) High-heat-conductivity high-strength and high-toughness die-casting aluminum alloy and preparation method thereof
CN114032420B (en) High-performance cast high-temperature alloy
CN114561571B (en) Low-casting-stress high-strength wear-resistant nickel-based alloy and production method thereof
CN113862529B (en) Aluminum alloy and preparation method thereof
CN115109980A (en) Titanium-containing steel with ultralow nitrogen content and preparation method thereof
CN111139365B (en) Slag system for smelting GH3625 nickel-based alloy containing rare earth Ce and electroslag remelting method thereof
CN110527856B (en) Preparation method of high-surface-quality and high-strength nickel alloy strip
CN114645159B (en) High-temperature oxidation-resistant high-strength nickel-tungsten-cobalt-chromium alloy and preparation method thereof
CN115874080B (en) Copper-based alloy material and preparation method and application thereof
CN114635071B (en) Smelting method of martensite heat-resistant steel
CN108642400A (en) A kind of high-performance carbide mold materials and preparation method thereof
CN112111627B (en) Multi-alloy composite deoxidation method for stainless steel

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
GR01 Patent grant
GR01 Patent grant