CN105695777A - Method for refining nickel-based high-temperature alloy via electron beam directional solidification technology - Google Patents
Method for refining nickel-based high-temperature alloy via electron beam directional solidification technology Download PDFInfo
- Publication number
- CN105695777A CN105695777A CN201610139446.1A CN201610139446A CN105695777A CN 105695777 A CN105695777 A CN 105695777A CN 201610139446 A CN201610139446 A CN 201610139446A CN 105695777 A CN105695777 A CN 105695777A
- Authority
- CN
- China
- Prior art keywords
- electron gun
- coupon
- temperature alloy
- ingot
- electron beam
- 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
Links
Classifications
-
- 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
- C22C1/12—Making non-ferrous alloys by processing in a semi-solid state, e.g. holding the alloy in the solid-liquid phase
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for refining a nickel-based high-temperature alloy via an electron beam directional solidification technology. The method comprises the following steps: S1, carrying out pretreatment on a nickel-based high-temperature alloy; and S2, refining electron beams and pulling ingots. Through the method, the purity of the 718 high-temperature alloy is improved; the content of S and the content of P in the alloy are lower than 0.002wt.% and 0.01wt.% respectively; the usage performance of the 718 high-temperature alloy is improved; the 718 high-temperature alloy has excellent oxidation resistance and electrochemical corrosion resistance; the parabolic oxidation kinetics constant of the 718 high-temperature alloy under 1000 DEG C is 12.62g<2>/m<4>.h and is far lower than that being 47.62g<2>/m<4>.h of the 718 high-temperature alloy prepared by the conventional method; the precipitation gamma' phase size of the 718 high-temperature alloy subjected to heat treatment is about as small as 10nm; the dispersion strengthening effect is significant; the 718 high-temperature alloy has a higher Vickers hardness value.
Description
Technical field
The present invention relates to Refining Nickel based high-temperature alloy field, specifically a kind of method of electron beam directional solidification technique Refining Nickel based high-temperature alloy。
Background technology
In order to ensure that high temperature alloy has the quality level of excellence, it is necessary to strictly control chemical composition, improve the degree of purity of high temperature alloy from source, and these depend primarily on smelting technology。The traditional preparation method of high temperature alloy has vacuum induction melting to add electric arc remelting, vacuum induction melting adds the duplex techniques such as electroslag remelting, vacuum induction adds that vacuum arc adds electroslag remelting, vacuum induction adds electroslag melting and adds three techniques such as vacuum arc remelting, powder metallurgy, electron beam rapid shaping technique, electron beam free forming manufacturing technology, laser cladding forming technology etc.。Though duplex and multi-joint technique can be effectively improved the metallurgical quality of alloy, but energy consumption is relatively big, and in induction melting process, crucible can pollute molten bath with the reaction of melt material。Though powder metallurgy and electron beam rapid shaping technique etc. can solve component segregation problem, but the preparation of high temperature alloy powder body material adds cost, and dusty material is easy to introduce in the alloy defect due to bigger specific surface area。
The surface that electron beam melting purification is the beam bombardment material utilizing high-energy-density makes melt material the technical process of melting material, this technology is widely used in the purification of solar-grade polysilicon, the refine of refractory metal and alloy thereof, prepares in high-purity special steel and ultra clean steel, titanium and alloy thereof and other metal material。Making molten bath be maintained at higher temperature by regulating power and speed of melting, fully there is degassed reaction in melt under the environment of high temperature fine vacuum, the removal of metallurgical imperfection and the impurity such as sulfur, phosphorus such as is conducive to being mingled with。React with melt alloy additionally, electronic torch melting process uses water jacketed copper crucible can be prevented effectively from crucible, and then improve the degree of purity of alloy。The directional solidification technique of electron beam is on the basis of electron beam melting purification high temperature alloy, achieve the preparation of large scale ingot casting, various sizes of high temperature alloy ingot casting can be prepared by the shape and size changing water jacketed copper crucible, to meet the needs of actual production, one of the feature and the advantage effective ways becoming the preparation high-purity high temperature alloy of large scale that electron beam directional solidification technique possesses。Therefore, a kind of method adopting electron beam directional solidification technique Refining Nickel based high-temperature alloy is urgently researched and developed。
Summary of the invention
According to technical problem set forth above, and a kind of method that electron beam directional solidification technique Refining Nickel based high-temperature alloy is provided。
The present invention adopts the method refine of electron beam melting purification nickel base superalloy ingot casting, improves the degree of purity of nickel base superalloy, thus improve the serviceability of high temperature alloy。Adopt friction feeding and ingot pulling mechanism, it is achieved that the directional solidification of high temperature alloy。Can obtaining large-sized high temperature alloy ingot casting by the method, owing to having stable thermograde, grain growth is oriented parallel to draw ingot direction, alloy structure and component distributing to be more uniformly distributed。
The technological means that the present invention adopts is as follows:
A kind of method of electron beam directional solidification technique Refining Nickel based high-temperature alloy, has following steps:
S1, nickel base superalloy pretreatment:
S11, adopt 718 high temperature alloy pole materials as raw material；
S12,718 high temperature alloy pole materials are cut into coupon, and coupon one end is processed female thread；
S13, remove the oxide layer on coupon surface；
S14, coupon is carried out, stand-by after drying up；
S2, electron beam melting purification and draw ingot:
Water jacketed copper crucible in S21, cleaning electron beam furnace and vertical ingot pulling mechanism draw ingot end, the bottom of water jacketed copper crucible be vertical ingot pulling mechanism draw ingot end；
S22, pretreated coupon is connected with straight feeding mechanism on the left of electron beam furnace by female thread, by adjustment straight feeding mechanism so that the other end of coupon is positioned at above water jacketed copper crucible；
S23, body of heater to electron beam furnace are cleared up；
S24, startup electron beam furnace, be evacuated to the vacuum of body of heater less than 5 × 10-2Pa, the vacuum of electron gun gun body is evacuated to less than 5 × 10-3Pa, afterwards, starts the left side electron gun and the right side electron gun that are positioned at body of heater, makes the line of left side electron gun and right side electron gun be 120mA, preheats 12 minutes；
S25, the line of left side electron gun and right side electron gun is all adjusted to 0, start high pressure, left side electron gun line it is slowly increased to 500mA after high-voltage-stable, sweep radius is adjusted to 5 × 5mm, regulate scanning pattern fusing coupon, starting to start after fusing straight feeding mechanism until coupon, regulation stall is shelves extremely at a slow speed so that it is feeding speed is 20mm/min；
After S26,10min, it is slowly increased right side electron gun line to 500mA, keeps beam spot to be sized to 15 × 15mm, regulate scanning pattern refine and fall into 718 high temperature alloys in water jacketed copper crucible；
After S27,10min, starting vertical ingot pulling mechanism, regulation stall is to shelves at a slow speed, and drawing ingot speed is 10mm/min, after pulling down ingot 1min, closes vertical ingot pulling mechanism；
After S28,10min, restarting vertical ingot pulling mechanism, regulation stall is to shelves at a slow speed, and drawing ingot speed is 10mm/min, after pulling down ingot 1min, closes vertical ingot pulling mechanism；
S29, repetition step S28, until straight feeding mechanism kinematic to after range, left side electron gun line is regulated to 0, after 10min, right side electron gun line is adjusted to 0, close left side electron gun and the high pressure of right side electron gun, and increase line to 60mA until high-voltage value is close left side electron gun and right side electron gun after 0 simultaneously；718 alloy cast ingots taking out electron beam melting purification after 2h are cooled down until electron beam furnace。
The diameter of described coupon is 20-50mm, long for 1m。
Described female thread is M10 × 0.75 female thread, and the depth of thread is 30mm。
Described coupon is carried out grinding process with emery wheel by described step S13, to remove the oxide layer on described coupon surface。
Described coupon is carried out respectively through deionized water and ethanol by described step S14, dries up described coupon with hair-dryer cold wind。
Described step S21 draws ingot end with what 1500# sand paper cleared up the water jacketed copper crucible in electron beam furnace and vertical ingot pulling mechanism, uses cotton and ethanol to carry out wiping to surface both light, on cotton till contamination-free。
The present invention compared with prior art, improves the degree of purity of 718 high temperature alloys, and wherein the content of S and P is respectively lower than 0.002wt.% and 0.01wt.%；Improve the serviceability of 718 high temperature alloys so that 718 high temperature alloys have antioxygenic property and the resistance to electrochemical corrosion energy of excellence, as in figure 2 it is shown, the parabola oxidation kinetics constant at 1000 DEG C is 12.62g2/m4.h, the 718 high temperature alloy (47.62g prepared far below traditional approach2/m4.h), after Overheating Treatment, it precipitates out γ ` phase size tiny (being about 10nm), and dispersion-strengthened effect is notable so that 718 high temperature alloys have higher Vickers hardness number。
The present invention can be widely popularized in fields such as Refining Nickel based high-temperature alloys for the foregoing reasons。
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation。
Fig. 1 is the structural representation of electron beam directional solidification technique Refining Nickel based high-temperature alloy device in the specific embodiment of the present invention。
Fig. 2 is the oxidizing dynamics curve of 718 alloys that 718 alloys prepared by the method for a kind of electron beam directional solidification technique Refining Nickel based high-temperature alloy of the present invention are prepared with traditional method。
Detailed description of the invention
As it is shown in figure 1, a kind of method of electron beam directional solidification technique Refining Nickel based high-temperature alloy, there are following steps:
S1, nickel base superalloy pretreatment:
S11, adopt 718 high temperature alloy pole materials as raw material；
S12,718 high temperature alloy pole materials are cut into diameter is 20-50mm, the long coupon 1 for 1m, and coupon 1 one end processes M10 × 0.75 female thread, and the depth of thread is 30mm；
S13, with emery wheel, described coupon 1 is carried out grinding process, to remove the oxide layer on described coupon surface。
S14, respectively through deionized water and ethanol, described coupon 1 is carried out, stand-by after drying up described coupon with hair-dryer cold wind。
S2, electron beam melting purification and draw ingot:
S21, clear up the water jacketed copper crucible 2 in electron beam furnace and vertical ingot pulling mechanism 3 with 1500# sand paper draw ingot end 4, cotton and ethanol is used to carry out wiping to surface both light, on cotton till contamination-free, the bottom of water jacketed copper crucible 2 be vertical ingot pulling mechanism 3 draw ingot end 4；
S22, pretreated coupon 1 is connected with straight feeding mechanism 6 on the left of electron beam furnace 5 by female thread, by adjustment straight feeding mechanism 6 so that the other end of coupon 1 is positioned at above water jacketed copper crucible 2；
S23, body of heater to electron beam furnace 5 are cleared up；
S24, startup electron beam furnace 5, be evacuated to the vacuum of body of heater less than 5 × 10-2Pa, the vacuum of electron gun gun body is evacuated to less than 5 × 10-3Pa, afterwards, starts the left side electron gun 7 and the right side electron gun 8 that are positioned at body of heater, makes the line of left side electron gun 7 and right side electron gun 8 be 120mA, preheats 12 minutes；
S25, the line of left side electron gun 7 and right side electron gun 8 is all adjusted to 0, start high pressure, left side electron gun 7 line it is slowly increased to 500mA after high-voltage-stable, sweep radius is adjusted to 5 × 5mm, regulate scanning pattern fusing coupon 1, starting to start after fusing straight feeding mechanism 6 until coupon 1, regulation stall is shelves extremely at a slow speed so that it is feeding speed is 20mm/min；
After S26,10min, it is slowly increased right side electron gun 8 line to 500mA, keeps beam spot to be sized to 15 × 15mm, regulate scanning pattern refine and fall into 718 high temperature alloys in water jacketed copper crucible 2；
After S27,10min, starting vertical ingot pulling mechanism 3, regulation stall is to shelves at a slow speed, and drawing ingot speed is 10mm/min, after pulling down ingot 1min, closes vertical ingot pulling mechanism 3；
After S28,10min, restarting vertical ingot pulling mechanism 3, regulation stall is to shelves at a slow speed, and drawing ingot speed is 10mm/min, after pulling down ingot 1min, closes vertical ingot pulling mechanism 3；
S29, repetition step S28, till straight feeding mechanism 6 moves to after range, left side electron gun 7 line is regulated to 0, after 10min, right side electron gun 8 line is adjusted to 0, close left side electron gun 7 and the high pressure of right side electron gun 8, and increase line to 60mA until high-voltage value is close left side electron gun 7 and right side electron gun 8 after 0 simultaneously；718 alloy cast ingots of electron beam melting purification are taken out after electron beam furnace 5 cools down 2h。
The above; it is only the present invention preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope that the invention discloses; it is equal to replacement according to technical scheme and inventive concept thereof or is changed, all should be encompassed within protection scope of the present invention。
Claims (6)
1. the method for an electron beam directional solidification technique Refining Nickel based high-temperature alloy, it is characterised in that there are following steps:
S1, nickel base superalloy pretreatment:
S11, adopt 718 high temperature alloy pole materials as raw material；
S12,718 high temperature alloy pole materials are cut into coupon, and coupon one end is processed female thread；
S13, remove the oxide layer on coupon surface；
S14, coupon is carried out, stand-by after drying up；
S2, electron beam melting purification and draw ingot:
Water jacketed copper crucible in S21, cleaning electron beam furnace and vertical ingot pulling mechanism draw ingot end, the bottom of water jacketed copper crucible be vertical ingot pulling mechanism draw ingot end；
S22, pretreated coupon is connected with straight feeding mechanism on the left of electron beam furnace by female thread, by adjustment straight feeding mechanism so that the other end of coupon is positioned at above water jacketed copper crucible；
S23, body of heater to electron beam furnace are cleared up；
S24, startup electron beam furnace, be evacuated to the vacuum of body of heater less than 5 × 10-2Pa, the vacuum of electron gun gun body is evacuated to less than 5 × 10-3Pa, afterwards, starts the left side electron gun and the right side electron gun that are positioned at body of heater, makes the line of left side electron gun and right side electron gun be 120mA, preheats 12 minutes；
S25, the line of left side electron gun and right side electron gun is all adjusted to 0, start high pressure, left side electron gun line it is slowly increased to 500mA after high-voltage-stable, sweep radius is adjusted to 5 × 5mm, regulate scanning pattern fusing coupon, starting to start after fusing straight feeding mechanism until coupon, regulation stall is shelves extremely at a slow speed so that it is feeding speed is 20mm/min；
After S26,10min, it is slowly increased right side electron gun line to 500mA, keeps beam spot to be sized to 15 × 15mm, regulate scanning pattern refine and fall into 718 high temperature alloys in water jacketed copper crucible；
After S27,10min, starting vertical ingot pulling mechanism, regulation stall is to shelves at a slow speed, and drawing ingot speed is 10mm/min, after pulling down ingot 1min, closes vertical ingot pulling mechanism；
After S28,10min, restarting vertical ingot pulling mechanism, regulation stall is to shelves at a slow speed, and drawing ingot speed is 10mm/min, after pulling down ingot 1min, closes vertical ingot pulling mechanism；
S29, repetition step S28, until straight feeding mechanism kinematic to after range, left side electron gun line is regulated to 0, after 10min, right side electron gun line is adjusted to 0, close left side electron gun and the high pressure of right side electron gun, and increase line to 60mA until high-voltage value is close left side electron gun and right side electron gun after 0 simultaneously；718 alloy cast ingots taking out electron beam melting purification after 2h are cooled down until electron beam furnace。
2. method according to claim 1, it is characterised in that: the diameter of described coupon is 20-50mm, long for 1m。
3. method according to claim 1, it is characterised in that: described female thread is M10 × 0.75 female thread, and the depth of thread is 30mm。
4. method according to claim 1, it is characterised in that: described coupon is carried out grinding process with emery wheel by described step S13, to remove the oxide layer on described coupon surface。
5. method according to claim 1, it is characterised in that: described coupon is carried out respectively through deionized water and ethanol by described step S14, dries up described coupon with hair-dryer cold wind。
6. method according to claim 1, it is characterized in that: described step S21 draws ingot end with what 1500# sand paper cleared up the water jacketed copper crucible in electron beam furnace and vertical ingot pulling mechanism, cotton and ethanol is used to carry out wiping to surface both light, on cotton till contamination-free。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610139446.1A CN105695777B (en) | 2016-03-11 | 2016-03-11 | The method that electron beam directional solidification technique refines nickel base superalloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610139446.1A CN105695777B (en) | 2016-03-11 | 2016-03-11 | The method that electron beam directional solidification technique refines nickel base superalloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105695777A true CN105695777A (en) | 2016-06-22 |
| CN105695777B CN105695777B (en) | 2017-10-24 |
Family
ID=56221111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610139446.1A Active CN105695777B (en) | 2016-03-11 | 2016-03-11 | The method that electron beam directional solidification technique refines nickel base superalloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105695777B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107164639A (en) * | 2017-06-27 | 2017-09-15 | 大连理工大学 | A kind of electron beam covers the method that formula solidification technology prepares high temperature alloy |
| CN107385244A (en) * | 2017-07-13 | 2017-11-24 | 大连理工大学 | A kind of electron beam covers the method that induced coagulation technology High Purity prepares nickel base superalloy |
| CN107574322A (en) * | 2017-08-29 | 2018-01-12 | 大连理工大学 | A kind of method that electronic torch melting technology High Purity prepares nickel base superalloy |
| CN112048624A (en) * | 2020-09-14 | 2020-12-08 | 大连理工大学 | Method for improving component uniformity of nickel-based high-temperature alloy through electron beam circulating overtemperature treatment |
| CN112210673A (en) * | 2020-08-11 | 2021-01-12 | 大连理工大学 | Method for removing inclusions in high-temperature alloy through electron beam surface pyrolysis |
| WO2021017661A1 (en) * | 2019-08-01 | 2021-02-04 | 大连理工大学 | Method for preparing high-purity nickel-based high-temperature alloy using electron beam induced refining and casting technology |
| CN114134353A (en) * | 2021-11-25 | 2022-03-04 | 宁波江丰电子材料股份有限公司 | Aluminum-scandium alloy and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60149738A (en) * | 1984-01-17 | 1985-08-07 | Sumitomo Metal Ind Ltd | Melting method of nb-ti alloy |
| CN1067397A (en) * | 1991-06-05 | 1992-12-30 | 通用电气公司 | Method and apparatus with the metal material of ingot form casting electron beam melting |
| CN104131165A (en) * | 2014-07-03 | 2014-11-05 | 大连理工大学 | Electron beam melting apparatus and method for preparing niobium-based superhigh temperature alloy by using electron beam melting apparatus |
-
2016
- 2016-03-11 CN CN201610139446.1A patent/CN105695777B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60149738A (en) * | 1984-01-17 | 1985-08-07 | Sumitomo Metal Ind Ltd | Melting method of nb-ti alloy |
| CN1067397A (en) * | 1991-06-05 | 1992-12-30 | 通用电气公司 | Method and apparatus with the metal material of ingot form casting electron beam melting |
| CN104131165A (en) * | 2014-07-03 | 2014-11-05 | 大连理工大学 | Electron beam melting apparatus and method for preparing niobium-based superhigh temperature alloy by using electron beam melting apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 刘祖林: "《冶金质量分析》", 30 June 1997, 机械工业出版社 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107164639A (en) * | 2017-06-27 | 2017-09-15 | 大连理工大学 | A kind of electron beam covers the method that formula solidification technology prepares high temperature alloy |
| CN107164639B (en) * | 2017-06-27 | 2019-01-15 | 大连理工大学 | A kind of electron beam covers the method that formula solidification technology prepares high temperature alloy |
| CN107385244A (en) * | 2017-07-13 | 2017-11-24 | 大连理工大学 | A kind of electron beam covers the method that induced coagulation technology High Purity prepares nickel base superalloy |
| CN107574322A (en) * | 2017-08-29 | 2018-01-12 | 大连理工大学 | A kind of method that electronic torch melting technology High Purity prepares nickel base superalloy |
| WO2021017661A1 (en) * | 2019-08-01 | 2021-02-04 | 大连理工大学 | Method for preparing high-purity nickel-based high-temperature alloy using electron beam induced refining and casting technology |
| US11981978B2 (en) | 2019-08-01 | 2024-05-14 | Dalian University Of Technology | Method for preparing high-purity nickel-based superalloy by electron beam induced refining and casting technology |
| CN112210673A (en) * | 2020-08-11 | 2021-01-12 | 大连理工大学 | Method for removing inclusions in high-temperature alloy through electron beam surface pyrolysis |
| CN112048624A (en) * | 2020-09-14 | 2020-12-08 | 大连理工大学 | Method for improving component uniformity of nickel-based high-temperature alloy through electron beam circulating overtemperature treatment |
| CN112048624B (en) * | 2020-09-14 | 2021-08-03 | 大连理工大学 | Method for improving component uniformity of nickel-based high-temperature alloy through electron beam circulating overtemperature treatment |
| CN114134353A (en) * | 2021-11-25 | 2022-03-04 | 宁波江丰电子材料股份有限公司 | Aluminum-scandium alloy and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105695777B (en) | 2017-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105695777A (en) | Method for refining nickel-based high-temperature alloy via electron beam directional solidification technology | |
| CN107267788B (en) | A kind of electron beam melting purification is combined the method for preparing high-purity nickel base superalloy with low-temperature receiver gettering | |
| CN112095019B (en) | Method for removing inclusions in high-temperature alloy through electron beam overheating dissolution | |
| US11981978B2 (en) | Method for preparing high-purity nickel-based superalloy by electron beam induced refining and casting technology | |
| CN107164639B (en) | A kind of electron beam covers the method that formula solidification technology prepares high temperature alloy | |
| CN104550960B (en) | The metal increasing material manufacturing method of application cold hearth melting and metal parts and application | |
| CN104032151A (en) | An EB cold hearth smelting method of TC4 titanium alloy ingots | |
| JP5048222B2 (en) | Method for producing long ingots of active refractory metal alloys | |
| CN102021348A (en) | Vacuum/gas shield electroslag remelting continuous directional solidification device and method | |
| CN101886184A (en) | Aluminum alloy super-purification refining method | |
| CN108273980B (en) | Method for producing composite roller by preheating consumable electrode electroslag remelting | |
| JP5027682B2 (en) | Method for producing refractory metal ingot | |
| CN112080662A (en) | Method for preparing high-homogeneity nickel-based high-temperature alloy by electromagnetic stirring coupling electron beam layered solidification casting technology | |
| JPWO2011093310A1 (en) | Method for producing active element-containing copper alloy wire | |
| JP2011173172A (en) | Method for producing long cast block of active high melting point metal alloy | |
| KR20160071949A (en) | Slag for electro slag remelting and the method for preparing ingot using the same | |
| US7753986B2 (en) | Titanium processing with electric induction energy | |
| CN110484742B (en) | Method for preparing Fe-W intermediate alloy by electron beam melting and high purification | |
| CN112063864A (en) | Method for preparing high-purity nickel-based high-temperature alloy by magnetic field enhanced electron beam refining pouring technology | |
| CN108247021B (en) | Electroslag remelting device and method for producing composite roller by preheating consumable electrode | |
| JP5822519B2 (en) | Melting furnace for metal melting | |
| JP4505811B2 (en) | Casting method for molten alloy | |
| WO2011099208A1 (en) | Silicon vacuum melting method | |
| CN112210673B (en) | Method for removing inclusions in high-temperature alloy through electron beam surface pyrolysis | |
| CN102605189A (en) | Method for preparing copper and copper-alloy cast ingots by electroslag refining technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |