CN114855009A - Vacuum induction smelting process for smelting alloy by using high-proportion returning charge - Google Patents
Vacuum induction smelting process for smelting alloy by using high-proportion returning charge Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 186
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 40
- 239000000956 alloy Substances 0.000 title claims abstract description 40
- 238000003723 Smelting Methods 0.000 title claims abstract description 39
- 230000006698 induction Effects 0.000 title description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 129
- 239000010959 steel Substances 0.000 claims abstract description 129
- 239000004615 ingredient Substances 0.000 claims abstract description 74
- 238000007670 refining Methods 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims abstract description 52
- 238000010309 melting process Methods 0.000 claims abstract description 37
- 238000005275 alloying Methods 0.000 claims abstract description 28
- 238000010308 vacuum induction melting process Methods 0.000 claims abstract description 28
- 239000007769 metal material Substances 0.000 claims abstract description 24
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 22
- 238000004140 cleaning Methods 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims description 36
- 238000002844 melting Methods 0.000 claims description 27
- 230000008018 melting Effects 0.000 claims description 27
- 238000005070 sampling Methods 0.000 claims description 26
- 229910052782 aluminium Inorganic materials 0.000 claims description 19
- 239000012535 impurity Substances 0.000 claims description 19
- 239000003513 alkali Substances 0.000 claims description 18
- 229910052799 carbon Inorganic materials 0.000 claims description 18
- 229910052804 chromium Inorganic materials 0.000 claims description 18
- 238000005520 cutting process Methods 0.000 claims description 18
- 239000004576 sand Substances 0.000 claims description 18
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 18
- 238000005406 washing Methods 0.000 claims description 18
- 238000005266 casting Methods 0.000 claims description 14
- 229910052684 Cerium Inorganic materials 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 9
- 238000009529 body temperature measurement Methods 0.000 claims description 9
- 230000005587 bubbling Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 9
- 229910052749 magnesium Inorganic materials 0.000 claims description 9
- 238000007885 magnetic separation Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 230000007935 neutral effect Effects 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 239000013589 supplement Substances 0.000 claims description 9
- 238000005272 metallurgy Methods 0.000 claims 2
- 239000010936 titanium Substances 0.000 abstract description 20
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 8
- 238000005204 segregation Methods 0.000 abstract description 3
- 239000011651 chromium Substances 0.000 description 16
- 239000007789 gas Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- 229910018487 Ni—Cr Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000011159 matrix material 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
- 238000004881 precipitation hardening Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 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
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
-
- 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
-
- 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
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention provides a vacuum induction melting process of a high proportion return smelting alloy, which comprises the following components in percentage by weight: high proportion GH4033 return: 60-70%; metal material: 30-40%, wherein the vacuum induction melting process for the high proportion return material smelting alloy comprises the following steps: cleaning process of the ingredients; melting process of the ingredients; refining the molten steel; alloying the molten steel; pouring molten steel; and through the high proportion of the return material, titanium only needs to be added in a small amount after the refining period, the titanium element is ensured to be collected, and the segregation of the element is avoided.
Description
Technical Field
The invention relates to the technical field related to floc culture, in particular to a vacuum induction smelting process for smelting alloy by using high-proportion return materials.
Background
GH4033 is a Ni-Cr-based precipitation hardening type deformation high-temperature alloy, takes nickel-chromium as a matrix, is added with aluminum and titanium to form a gamma' phase dispersion strengthening alloy, has enough high-temperature strength at 700-750 ℃, and has good oxidation resistance below 900 ℃.
The alloy has good cold and hot processing performance, is mainly used for hot rolling rod and disc blanks, is widely applied to high-temperature parts of turbine engines, and is mainly used as turbine working blades, turbine discs and other high-temperature bearing parts.
In the prior art, pure metal materials are adopted for producing vacuum smelting GH4033 alloy, but all metal materials are adopted for smelting, the content of O, N, H in gas after full smelting is high, so that oxygen and nitrogen elements are difficult to remove in the later period, meanwhile, Pb is required to be less than or equal to 0.001%, Bi is less than or equal to 0.0001%, Sn is less than or equal to 0.0012%, Sb is less than or equal to 0.0025%, and As is less than or equal to 0.0025%, and the elements cannot be effectively removed in the vacuum smelting process, so that the requirements of brand-new metal material smelting on raw materials are strict, the cost of the raw materials is greatly increased, the titanium content is required to be 2.40-2.80% by the alloy standard, compounds such As titanium oxide, titanium carbonitride and the like are easily formed, and the contents of oxygen and nitrogen elements are high. Titanium element is easy to generate segregation, and GH4033 is smelted by adopting all-metal materials, so that the addition amount of the titanium element is large in the later period of refining, and the titanium element is not beneficial to the collection and segregation control.
Disclosure of Invention
The invention aims to provide a vacuum induction melting process for smelting an alloy by using a high-proportion return material, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a vacuum induction melting process of high proportion return smelting alloy comprises the following components in percentage by weight (in percentage by mass): high proportion GH4033 return: 60-70%; metal material: 30-40%.
Preferably, the vacuum induction melting process for smelting the alloy by using the high-proportion returning materials comprises the following steps:
the method comprises the following steps: a cleaning process of an ingredient, the cleaning process of the ingredient comprising: a magnetic separation impurity removal process, a wind blowing impurity removal process, a spraying rough washing process, a first alkali liquor ultrasonic cleaning process, a second alkali liquor ultrasonic cleaning process, a wind cutting drying process, a sand washing operation process, a sand material separation process, a bubbling rinsing process, a neutral drying process, a wind cutting drying process, a drying process and the like;
step two: the method comprises the following steps of (1) melting the ingredients, wherein the melting process of the ingredients is to put the cleaned ingredients into melting equipment to be melted into molten steel, and the melting process of the ingredients specifically comprises a full melting process, a first temperature measuring process and a first sampling process;
step three: the refining process of the molten steel is to refine the molten steel through refining equipment;
step four: the alloying process of the molten steel is to supplement materials according to the chemical composition requirements of the refined molten steel and the analysis result and adjust the components;
step five: and (5) pouring molten steel.
Preferably, in the melting process of the ingredients, the feeding sequence of the ingredients is as follows: adding the returning material firstly, and then adding the metal material, wherein the melting temperature is as follows: 1490-1510 ℃, wherein the vacuum degree is as follows: 0 to 30 Pa. .
Preferably, the second temperature measurement is carried out before the refining process of the molten steel, and the refining temperature is as follows: 1500-1520 ℃, and the vacuum degree is as follows: 0-1 Pa, and refining time is as follows: 60-100 min.
Preferably, during the refining process of the molten steel, the detection of gas generated after refining should ensure that the O content is less than 20ppm and the N content is less than 35 ppm.
Preferably, the molten steel alloying process specifically comprises the following steps: the method comprises the following steps of proportioning Al, Ti, C and Cr, sampling for the second time, proportioning Al, Ti, C and Cr again and measuring temperature for the third time.
Preferably, in the alloying process of the molten steel, the vacuum degree is as follows: 0 to 1 Pa.
Preferably, Ce, Ni and Mg are added into the molten steel before the pouring process of the molten steel, then the molten steel is sampled for the third time, and then the molten steel is poured and formed.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, through the use of the GH4033 alloy return material, the content of residual elements, harmful elements O, N and the like brought by raw materials is controllable, the content of the residual elements in the GH4033 alloy in the full smelting period is effectively reduced through the mixed use of the GH4033 return material and a pure metal material, and the uniformity of all elements distributed in liquid metal is effectively improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The invention provides a technical scheme that: the invention provides the following technical scheme: a vacuum induction melting process of high proportion return smelting alloy comprises the following components in percentage by weight (in percentage by mass): high proportion GH4033 return: 60 percent; metal material: 40 percent.
The vacuum induction melting process for smelting the alloy by the high-proportion return materials comprises the following steps of:
the method comprises the following steps: a cleaning process of an ingredient, the cleaning process of the ingredient comprising: a magnetic separation impurity removal process, a wind blowing impurity removal process, a spraying rough washing process, a first alkali liquor ultrasonic cleaning process, a second alkali liquor ultrasonic cleaning process, a wind cutting drying process, a sand washing operation process, a sand material separation process, a bubbling rinsing process, a neutral drying process, a wind cutting drying process, a drying process and the like;
step two: the method comprises the following steps of (1) melting the ingredients, wherein the melting process of the ingredients is to put the cleaned ingredients into melting equipment to be melted into molten steel, and the melting process of the ingredients specifically comprises a full melting process, a first temperature measuring process and a first sampling process;
step three: the refining process of the molten steel is to refine the molten steel through refining equipment;
step four: the alloying process of the molten steel is to supplement materials according to the chemical composition requirements of the refined molten steel and the analysis result and adjust the components;
step five: and (5) pouring molten steel.
In the melting process of the ingredients, the feeding sequence of the ingredients is as follows: adding the returning material firstly, and then adding the metal material, wherein the melting temperature is as follows: 1500 ℃, the vacuum degree of which is: 10 Pa. .
The secondary temperature measurement is needed before the refining process of the molten steel, and the refining temperature is as follows: 1510 ℃ and the vacuum degree is: 1Pa, refining time is as follows: and 80 min.
During the refining process of the molten steel, the detection of gas generated after refining is to ensure that the O content is less than 20ppm and the N content is less than 35 ppm.
The alloying process of the molten steel is as follows: the method comprises the following steps of proportioning Al, Ti, C and Cr, sampling for the second time, proportioning Al, Ti, C and Cr again and measuring temperature for the third time.
In the alloying process of the molten steel, the vacuum degree is as follows: 1 Pa.
The method comprises the steps of adding Ce, Ni and Mg into the molten steel before the casting process of the molten steel, then sampling the molten steel for the third time, and then casting and forming the molten steel.
Example two
The invention provides a technical scheme that: the invention provides the following technical scheme: a vacuum induction melting process of high proportion return smelting alloy comprises the following components in percentage by weight (in percentage by mass): high proportion GH4033 return: 62 percent; metal material: 38 percent.
The vacuum induction melting process for smelting the alloy by the high-proportion return materials comprises the following steps of:
the method comprises the following steps: a cleaning process of an ingredient, the cleaning process of the ingredient comprising: a magnetic separation impurity removal process, a wind blowing impurity removal process, a spraying rough washing process, a first alkali liquor ultrasonic cleaning process, a second alkali liquor ultrasonic cleaning process, a wind cutting drying process, a sand washing operation process, a sand material separation process, a bubbling rinsing process, a neutral drying process, a wind cutting drying process, a drying process and the like;
step two: the method comprises the following steps of (1) melting the ingredients, wherein the melting process of the ingredients is to put the cleaned ingredients into melting equipment to be melted into molten steel, and the melting process of the ingredients specifically comprises a full melting process, a first temperature measuring process and a first sampling process;
step three: the refining process of the molten steel is to refine the molten steel through refining equipment;
step four: the alloying process of the molten steel is to supplement materials according to the chemical composition requirements of the refined molten steel and the analysis result and adjust the components;
step five: and (5) pouring molten steel.
In the melting process of the ingredients, the feeding sequence of the ingredients is as follows: adding the returning material firstly, and then adding the metal material, wherein the melting temperature is as follows: 1500 ℃, the vacuum degree of which is: 10 Pa. .
The secondary temperature measurement is needed before the refining process of the molten steel, and the refining temperature is as follows: 1510 ℃ and the vacuum degree is: 1Pa, refining time is as follows: and 80 min.
During the refining process of the molten steel, the detection of gas generated after refining is to ensure that the O content is less than 20ppm and the N content is less than 35 ppm.
The alloying process of the molten steel is as follows: the method comprises the following steps of proportioning Al, Ti, C and Cr, sampling for the second time, proportioning Al, Ti, C and Cr again and measuring temperature for the third time.
In the alloying process of the molten steel, the vacuum degree is as follows: 1 Pa.
The method comprises the steps of adding Ce, Ni and Mg into the molten steel before the casting process of the molten steel, then sampling the molten steel for the third time, and then casting and forming the molten steel.
EXAMPLE III
The invention provides a technical scheme that: the invention provides the following technical scheme: a vacuum induction melting process of high proportion return smelting alloy comprises the following components in percentage by weight (in percentage by mass): high proportion GH4033 return: 64 percent; metal material: 36 percent.
The vacuum induction melting process for smelting the alloy by using the high-proportion return materials comprises the following steps of:
the method comprises the following steps: a cleaning process of an ingredient, the cleaning process of the ingredient comprising: a magnetic separation impurity removal process, a wind blowing impurity removal process, a spraying rough washing process, a first alkali liquor ultrasonic cleaning process, a second alkali liquor ultrasonic cleaning process, a wind cutting drying process, a sand washing operation process, a sand material separation process, a bubbling rinsing process, a neutral drying process, a wind cutting drying process, a drying process and the like;
step two: the method comprises the following steps of (1) melting the ingredients, wherein the melting process of the ingredients is to put the cleaned ingredients into melting equipment to be melted into molten steel, and the melting process of the ingredients specifically comprises a full melting process, a first temperature measuring process and a first sampling process;
step three: the refining process of the molten steel is to refine the molten steel through refining equipment;
step four: the alloying process of the molten steel is to supplement materials according to the chemical composition requirements of the refined molten steel and the analysis results and adjust the components;
step five: and (5) pouring molten steel.
In the melting process of the ingredients, the feeding sequence of the ingredients is as follows: adding the returning material firstly, and then adding the metal material, wherein the melting temperature is as follows: 1500 ℃, the vacuum degree of which is: 10 Pa. .
The secondary temperature measurement is needed before the refining process of the molten steel, and the refining temperature is as follows: 1510 ℃ and the vacuum degree is: 1Pa, refining time is as follows: and 80 min.
During the refining process of the molten steel, the detection of gas generated after refining is to ensure that the O content is less than 20ppm and the N content is less than 35 ppm.
The alloying process of the molten steel is as follows: the method comprises the following steps of proportioning Al, Ti, C and Cr, sampling for the second time, proportioning Al, Ti, C and Cr again and measuring temperature for the third time.
In the alloying process of the molten steel, the vacuum degree is as follows: 1 Pa.
The method comprises the steps of adding Ce, Ni and Mg into the molten steel before the casting process of the molten steel, then sampling the molten steel for the third time, and then casting and forming the molten steel.
Example four
The invention provides a technical scheme that: the invention provides the following technical scheme: a vacuum induction melting process of high proportion return smelting alloy comprises the following components in percentage by weight (in percentage by mass): high proportion GH4033 return: 66 percent; metal material: 34 percent.
The vacuum induction melting process for smelting the alloy by the high-proportion return materials comprises the following steps of:
the method comprises the following steps: a cleaning process of an ingredient, the cleaning process of the ingredient comprising: a magnetic separation impurity removal process, a wind blowing impurity removal process, a spraying rough washing process, a first alkali liquor ultrasonic cleaning process, a second alkali liquor ultrasonic cleaning process, a wind cutting drying process, a sand washing operation process, a sand material separation process, a bubbling rinsing process, a neutral drying process, a wind cutting drying process, a drying process and the like;
step two: the method comprises the following steps of (1) melting the ingredients, wherein the melting process of the ingredients is to put the cleaned ingredients into melting equipment to be melted into molten steel, and the melting process of the ingredients specifically comprises a full melting process, a first temperature measuring process and a first sampling process;
step three: the refining process of the molten steel is to refine the molten steel through refining equipment;
step four: the alloying process of the molten steel is to supplement materials according to the chemical composition requirements of the refined molten steel and the analysis result and adjust the components;
step five: and (5) pouring molten steel.
In the melting process of the ingredients, the feeding sequence of the ingredients is as follows: adding the returning material firstly, and then adding the metal material, wherein the melting temperature is as follows: 1500 ℃, the vacuum degree of which is: 10 Pa. .
The secondary temperature measurement is needed before the refining process of the molten steel, and the refining temperature is as follows: 1510 ℃ and the vacuum degree is: 1Pa, refining time is as follows: and 80 min.
During the refining process of the molten steel, the detection of gas generated after refining is to ensure that the O content is less than 20ppm and the N content is less than 35 ppm.
The alloying process of the molten steel is as follows: the method comprises the following steps of proportioning Al, Ti, C and Cr, sampling for the second time, proportioning Al, Ti, C and Cr again and measuring temperature for the third time.
In the alloying process of the molten steel, the vacuum degree is as follows: 1 Pa.
The method comprises the steps of adding Ce, Ni and Mg into the molten steel before the casting process of the molten steel, then sampling the molten steel for the third time, and then casting and forming the molten steel.
EXAMPLE five
The invention provides a technical scheme that: the invention provides the following technical scheme: a vacuum induction melting process of high proportion return smelting alloy comprises the following components in percentage by weight (in percentage by mass): high proportion GH4033 return: 68 percent; metal material: 32 percent.
The vacuum induction melting process for smelting the alloy by the high-proportion return materials comprises the following steps of:
the method comprises the following steps: a cleaning process of an ingredient, the cleaning process of the ingredient comprising: a magnetic separation impurity removal process, a wind blowing impurity removal process, a spraying rough washing process, a first alkali liquor ultrasonic cleaning process, a second alkali liquor ultrasonic cleaning process, a wind cutting drying process, a sand washing operation process, a sand material separation process, a bubbling rinsing process, a neutral drying process, a wind cutting drying process, a drying process and the like;
step two: the method comprises the following steps of (1) melting the ingredients, wherein the melting process of the ingredients is to put the cleaned ingredients into melting equipment to be melted into molten steel, and the melting process of the ingredients specifically comprises a full melting process, a first temperature measuring process and a first sampling process;
step three: the refining process of the molten steel is to refine the molten steel through refining equipment;
step four: the alloying process of the molten steel is to supplement materials according to the chemical composition requirements of the refined molten steel and the analysis result and adjust the components;
step five: and (5) pouring molten steel.
In the melting process of the ingredients, the feeding sequence of the ingredients is as follows: adding the returning material firstly, and then adding the metal material, wherein the melting temperature is as follows: 1500 ℃, the vacuum degree of which is: 10 Pa. .
The secondary temperature measurement is needed before the refining process of the molten steel, and the refining temperature is as follows: 1510 ℃ and the vacuum degree is: 1Pa, refining time is as follows: and 80 min.
During the refining process of the molten steel, the detection of gas generated after refining is to ensure that the O content is less than 20ppm and the N content is less than 35 ppm.
The alloying process of the molten steel is as follows: the method comprises the following steps of proportioning Al, Ti, C and Cr, sampling for the second time, proportioning Al, Ti, C and Cr again and measuring temperature for the third time.
In the alloying process of the molten steel, the vacuum degree is as follows: 1 Pa.
The method comprises the steps of adding Ce, Ni and Mg into the molten steel before the casting process of the molten steel, then sampling the molten steel for the third time, and then casting and forming the molten steel.
EXAMPLE six
The invention provides a technical scheme that: the invention provides the following technical scheme: a vacuum induction melting process of high proportion return smelting alloy comprises the following components in percentage by weight (in percentage by mass): high proportion GH4033 return: 70 percent; metal material: 30 percent.
The vacuum induction melting process for smelting the alloy by the high-proportion return materials comprises the following steps of:
the method comprises the following steps: a cleaning process of an ingredient, the cleaning process of the ingredient comprising: a magnetic separation impurity removal process, a wind blowing impurity removal process, a spraying rough washing process, a first alkali liquor ultrasonic cleaning process, a second alkali liquor ultrasonic cleaning process, a wind cutting drying process, a sand washing operation process, a sand material separation process, a bubbling rinsing process, a neutral drying process, a wind cutting drying process, a drying process and the like;
step two: the method comprises the following steps of (1) melting the ingredients, wherein the melting process of the ingredients is to put the cleaned ingredients into melting equipment to be melted into molten steel, and the melting process of the ingredients specifically comprises a full melting process, a first temperature measuring process and a first sampling process;
step three: the refining process of the molten steel is to refine the molten steel through refining equipment;
step four: the alloying process of the molten steel is to supplement materials according to the chemical composition requirements of the refined molten steel and the analysis result and adjust the components;
step five: and (5) pouring molten steel.
In the melting process of the ingredients, the feeding sequence of the ingredients is as follows: adding the returning material firstly, and then adding the metal material, wherein the melting temperature is as follows: 1500 ℃, the vacuum degree of which is: 10 Pa. .
The secondary temperature measurement is needed before the refining process of the molten steel, and the refining temperature is as follows: 1510 ℃ and the vacuum degree is: 1Pa, refining time is as follows: and 80 min.
During the refining process of the molten steel, the detection of gas generated after refining is to ensure that the O content is less than 20ppm and the N content is less than 35 ppm.
The alloying process of the molten steel is as follows: the method comprises the following steps of proportioning Al, Ti, C and Cr, sampling for the second time, proportioning Al, Ti, C and Cr again and measuring temperature for the third time.
In the alloying process of the molten steel, the vacuum degree is as follows: 1 Pa.
The method comprises the steps of adding Ce, Ni and Mg into the molten steel before the casting process of the molten steel, then sampling the molten steel for the third time, and then casting and forming the molten steel.
Comparative example
The invention provides a technical scheme that: the invention provides the following technical scheme: a vacuum induction melting process of high proportion return smelting alloy comprises the following components in percentage by weight (in percentage by mass): high proportion GH4033 return: 100 percent; metal material: 0 percent.
The vacuum induction melting process for smelting the alloy by using the high-proportion return materials comprises the following steps of:
the method comprises the following steps: a cleaning process of an ingredient, the cleaning process of the ingredient comprising: a magnetic separation impurity removal process, a wind blowing impurity removal process, a spraying rough washing process, a first alkali liquor ultrasonic cleaning process, a second alkali liquor ultrasonic cleaning process, a wind cutting drying process, a sand washing operation process, a sand material separation process, a bubbling rinsing process, a neutral drying process, a wind cutting drying process, a drying process and the like;
step two: the method comprises the following steps of (1) melting the ingredients, wherein the melting process of the ingredients is to put the cleaned ingredients into melting equipment to be melted into molten steel, and the melting process of the ingredients specifically comprises a full melting process, a first temperature measuring process and a first sampling process;
step three: the refining process of the molten steel is to refine the molten steel through refining equipment;
step four: the alloying process of the molten steel is to supplement materials according to the chemical composition requirements of the refined molten steel and the analysis result and adjust the components;
step five: and (5) pouring molten steel.
In the melting process of the ingredients, the feeding sequence of the ingredients is as follows: adding the returning material firstly, and then adding the metal material, wherein the melting temperature is as follows: 1500 ℃ and the vacuum degree is as follows: 10 Pa. .
The secondary temperature measurement is needed before the refining process of the molten steel, and the refining temperature is as follows: 1510 ℃ and the vacuum degree of the solution is: 1Pa, refining time is as follows: and (5) 80 min.
During the refining process of the molten steel, the detection of gas generated after refining is to ensure that the O content is less than 20ppm and the N content is less than 35 ppm.
The alloying process of the molten steel is as follows: the method comprises the following steps of proportioning Al, Ti, C and Cr, sampling for the second time, proportioning Al, Ti, C and Cr again and measuring temperature for the third time.
In the alloying process of the molten steel, the vacuum degree is as follows: 1 Pa.
The method comprises the steps of adding Ce, Ni and Mg into molten steel before the pouring process of the molten steel, then sampling the molten steel for the third time, and then pouring and forming the molten steel.
Table one
| Content of O | Content of N | S content | Pb content | Sn content | Content of As | Sb content | Bi content | |
| Example one | 0.0015～0.0020 | 0.0025～0.0049 | 0.0009～0.0017 | 0.0002～0.0006 | 0.0003～0.0005 | 0.00002～0.00003 | 0.0004～0.0008 | 0.00002～0.00003 |
| Example two | 0.0013～0.0018 | 0.0023～0.0046 | 0.0008～0.0015 | 0.0002～0.0005 | 0.0003～0.0004 | 0.00002～0.00003 | 0.0004～0.0007 | 0.00001～0.00003 |
| EXAMPLE III | 0.0011～0.0016 | 0.0021～0.0041 | 0.0007～0.0015 | 0.0001～0.0005 | 0.0002～0.0004 | 0.00001～0.00003 | 0.0003～0.0007 | 0.00001～0.00003 |
| Example four | 0.0009～0.0013 | 0.0018～0.0038 | 0.0006～0.0014 | 0.0001～0.0005 | 0.0002～0.0003 | 0.00001～0.00003 | 0.0003～0.0006 | 0.00001～0.00002 |
| EXAMPLE five | 0.0007～0.0011 | 0.0016～0.0034 | 0.0005～0.0012 | 0.0001～0.0004 | 0.0001～0.0003 | 0.00001～0.00002 | 0.0002～0.0006 | 0.00001～0.00002 |
| Example six | 0.0005～0.0010 | 0.0013～0.0031 | 0.0004～0.0011 | 0.0001～0.0003 | 0.0001～0.0002 | 0.00001～0.00002 | 0.0002～0.0005 | 0.00001～0.00002 |
| Comparative example | 0.0017～0.0022 | 0.0028～0.0053 | 0.001～0.002 | 0.0002～0.0006 | 0.0004～0.0005 | 0.00002～0.00004 | 0.0005～0.0008 | 0.00002～0.00003 |
Through the results of comparative experiments on the six groups of examples and the comparative example, the content of impurity elements in the alloy is greatly reduced along with the increase of the return material proportion in the comparative example, the first example, the second example, the third example, the fourth example, the fifth example and the sixth example, so that the quality stability of the final product is greatly improved.
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 and their equivalents.
Claims (8)
1. A vacuum induction melting process of high proportion return material smelting alloy is characterized in that the high proportion return material smelting alloy comprises the following components in percentage by weight (in percentage by mass): high proportion GH4033 return: 60-70%; metal material: 30-40%.
2. The vacuum induction melting process of high proportion of returning material smelting alloy according to claim 1, characterized in that: the vacuum induction melting process for smelting the alloy by the high-proportion return materials comprises the following steps of:
the method comprises the following steps: a cleaning process of an ingredient, the cleaning process of the ingredient comprising: a magnetic separation impurity removal process, a wind blowing impurity removal process, a spraying rough washing process, a first alkali liquor ultrasonic cleaning process, a second alkali liquor ultrasonic cleaning process, a wind cutting drying process, a sand washing operation process, a sand material separation process, a bubbling rinsing process, a neutral drying process, a wind cutting drying process, a drying process and the like;
step two: the method comprises the following steps of (1) melting the ingredients, wherein the melting process of the ingredients is to put the cleaned ingredients into melting equipment to be melted into molten steel, and the melting process of the ingredients specifically comprises a full melting process, a first temperature measuring process and a first sampling process;
step three: the refining process of the molten steel is to refine the molten steel through refining equipment;
step four: the alloying process of the molten steel is to supplement materials according to the chemical composition requirements of the refined molten steel and the analysis result and adjust the components;
step five: and (5) pouring molten steel.
3. The vacuum induction melting process of high proportion of returning material smelting alloy according to claim 2, characterized in that: in the melting process of the ingredients, the feeding sequence of the ingredients is as follows: adding the return material, and then adding the metal material, wherein the melting temperature is as follows: 1490-1510 ℃, wherein the vacuum degree is as follows: 0 to 30 Pa.
4. The vacuum induction melting process of high proportion of returning material smelting alloy according to claim 2, characterized in that: the secondary temperature measurement is needed before the refining process of the molten steel, and the refining temperature is as follows: 1500-1520 ℃, and the vacuum degree is as follows: 0-1 Pa, and refining time is as follows: 60-100 min.
5. The vacuum induction melting process of high proportion of returning material metallurgy alloy according to claim 4, characterized in that: during the refining process of the molten steel, the detection of gas generated after refining is to ensure that the O content is less than 20ppm and the N content is less than 35 ppm.
6. The vacuum induction melting process for smelting alloy with high proportion of returning material as claimed in claim 2, wherein: the alloying process of the molten steel is as follows: the method comprises the following steps of proportioning Al, Ti, C and Cr, sampling for the second time, proportioning Al, Ti, C and Cr again and measuring temperature for the third time.
7. The vacuum induction melting process of high proportion of return material metallurgy alloy according to claim 6, wherein: in the alloying process of the molten steel, the vacuum degree is as follows: 0 to 1 Pa.
8. The vacuum induction melting process of high proportion of returning material smelting alloy according to claim 2, characterized in that: the method comprises the steps of adding Ce, Ni and Mg into the molten steel before the casting process of the molten steel, then sampling the molten steel for the third time, and then casting and forming the molten steel.
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| CN111621675A (en) * | 2020-07-17 | 2020-09-04 | 江苏美特林科特殊合金股份有限公司 | Method for smelting K452 high-temperature alloy containing return materials |
| 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 |
| CN113667861A (en) * | 2021-08-23 | 2021-11-19 | 中航上大高温合金材料股份有限公司 | Smelting method of GH3625 alloy |
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| CN111621675A (en) * | 2020-07-17 | 2020-09-04 | 江苏美特林科特殊合金股份有限公司 | Method for smelting K452 high-temperature alloy containing return materials |
| CN113667861A (en) * | 2021-08-23 | 2021-11-19 | 中航上大高温合金材料股份有限公司 | Smelting method of GH3625 alloy |
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