CN117737446A - Electron beam cooling bed furnace casting, edge cleaning and top sealing feeding method - Google Patents
Electron beam cooling bed furnace casting, edge cleaning and top sealing feeding method Download PDFInfo
- Publication number
- CN117737446A CN117737446A CN202311781125.8A CN202311781125A CN117737446A CN 117737446 A CN117737446 A CN 117737446A CN 202311781125 A CN202311781125 A CN 202311781125A CN 117737446 A CN117737446 A CN 117737446A
- Authority
- CN
- China
- Prior art keywords
- responsible
- electron gun
- feeding
- area
- crystallizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 40
- 238000010894 electron beam technology Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004140 cleaning Methods 0.000 title claims abstract description 29
- 238000005266 casting Methods 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 title abstract description 4
- 238000007670 refining Methods 0.000 claims abstract description 46
- 238000002425 crystallisation Methods 0.000 claims abstract description 31
- 230000008025 crystallization Effects 0.000 claims abstract description 31
- 238000002844 melting Methods 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 11
- 238000003723 Smelting Methods 0.000 abstract description 24
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 19
- 239000010936 titanium Substances 0.000 abstract description 14
- 229910052719 titanium Inorganic materials 0.000 abstract description 14
- 238000005520 cutting process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 17
- 230000008569 process Effects 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000009966 trimming Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 3
- 239000003039 volatile agent Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a casting, edge-cleaning, top-sealing and feeding method for an electron beam cooling bed furnace, and belongs to the technical field of titanium smelting. The method comprises the following steps: stopping feeding after the feeding is completed; cleaning volatile matters adsorbed in the primary refining area of the cooling bed by using two electron guns responsible for the primary refining area of the cooling bed; cleaning the volatile matters adsorbed in the cold bed refining area by using an electron gun responsible for the cold bed refining area; closing the electron gun in charge of the primary refining area and the refining area of the cooling bed, and cleaning volatile matters adsorbed on the periphery of the crystallizer by using the electron gun in charge of the crystallization area; entering a capping feeding stage, wherein the scanning pattern of an electron gun responsible for a crystallization area is kept unchanged, and the scanning current is reduced in a mode of reducing the average scanning current by 0.25A for 1 min; after the capping feeding is completed, the electron gun responsible for the crystallization area is turned off and enters a cooling stage. The method ensures that the inclusions in the titanium ingot can float upwards and the shrinkage cavity volume is reduced. Effectively reduces the head cutting amount of the cast ingot and improves the yield of the titanium ingot.
Description
Technical Field
The invention relates to the field of titanium smelting, in particular to a casting, trimming, capping and feeding method of an electron beam cooling bed furnace.
Background
Electron beam cold bed smelting is a novel smelting technology for producing titanium and titanium alloy, which is developed in the 60 s and the 80 s of the 20 th century. The electron beam cold bed smelting uses electron beam as heat source, the water-cooled copper crucible as cold bed, and utilizes the kinetic energy of high-speed electron to convert into heat energy so as to make metal melt, refine and cast into ingot. The cold bed smelted "clean" titanium and titanium alloys have been used not only on aircraft rotors, but also in military applications such as tank armour and civilian use.
And stopping smelting and starting capping feeding when the length of the cast ingot smelted by the electron beam cold bed smelting furnace reaches the process requirement length, and cooling the cast ingot. The tail position of the ingot is about 700mm still in the crystallizer, the part of the ingot is cooled by cooling water, if the ingot is not subjected to capping feeding treatment, the external cooling speed of the ingot tail is larger than the internal cooling speed, a large number of shrinkage holes are generated in the middle of the position about 350mm in the ingot tail crystallizer, and the yield of the ingot is reduced.
Therefore, it is necessary to study a trimming capping feeding method to reduce the shrinkage volume.
Disclosure of Invention
The invention provides a method for casting, trimming, capping and feeding an electron beam cooling bed furnace.
According to one aspect of the invention, there is provided an electron beam cold bed furnace casting, edge-cleaning, capping and feeding method, comprising the steps of:
step S1: stopping feeding after the feeding is completed;
step S2: cleaning volatile matters adsorbed in the primary refining area of the cooling bed by using two electron guns responsible for the primary refining area of the cooling bed;
step S3: cleaning the volatile matters adsorbed in the cold bed refining area by using an electron gun responsible for the cold bed refining area;
step S4: closing the electron gun in charge of the primary refining area and the refining area of the cooling bed, and cleaning volatile matters adsorbed on the periphery of the crystallizer by using the electron gun in charge of the crystallization area;
step S5: after the volatile matters in the primary refining area, the refining area and the crystallization area of the cooling bed are cleaned, the cooling bed enters a capping feeding stage, and in the capping feeding stage, the scanning pattern of an electron gun responsible for the crystallization area is kept unchanged, and the scanning current is reduced in a mode of reducing the scanning current by 0.25A for 1min on average;
step S6: after the capping feeding is completed, the electron gun responsible for the crystallization area is turned off and enters a cooling stage.
According to one embodiment of the invention, in step S2, the emission current of the two electron guns responsible for the cold bed primary refining zone is set to 11A, the voltage to 50kV and the power to 550kW.
According to one embodiment of the present invention, in step S2, the cleaning is performed by moving the scan pattern in the X, Y directions according to the position of the adsorbed and grown volatile matter.
According to one embodiment of the invention, in step S3, the emission current of the electron gun responsible for the cold bed refining zone is set to 10A, the voltage to 50kV and the power to 500kW.
According to one embodiment of the present invention, in step S3, cleaning is performed by moving the scan pattern in the X, Y directions according to the position of the adsorbed and grown volatile matter.
According to one embodiment of the invention, in step S4, the emission current of the electron gun responsible for the crystallization zone is set to 15A, the voltage to 50kV and the power to 750kW.
According to one embodiment of the invention, in step S4, different scan patterns are set as clearing lines for the electron gun responsible for the crystallization zone for the overflow, the crystallizer anode, the crystallizer distal end, the crystallizer cathode and the crystallizer gate.
According to one embodiment of the invention, in step S4, the length of the scan pattern for the overflow is 284mm, the width is 30mm, the length of the scan pattern for the mold is 1560mm, the width is 200mm, the length of the scan pattern for the male side of the mold is 1560mm, the width is 10mm, the length of the scan pattern for the distal end of the mold is 143mm, the width is 180mm, the length of the scan pattern for the female side of the mold is 1560mm, the width is 10mm, the length of the scan pattern for the gate of the mold is 127mm, the width is 190mm.
According to one embodiment of the invention, the power density for the overflow is 0.49kw/cm 2 The dead time was 104ms and the power density for the crystallizer was 0.08kw/cm 2 The dead time was 620ms and the power density for the crystallizer anode side was 0.52kw/cm 2 The dead time was 200ms and the power density for the far end of the crystallizer was 0.13kw/cm 2 The dead time was 80ms and the power density for the mold shadow was 0.52kw/cm 2 The dead time was 200ms and the power density for the mold gate was 0.05kw/cm 2 The dead time is 30ms.
According to one embodiment of the invention, in step S5, the emission current of the electron gun responsible for the crystallization zone is set to 11.25A during the capping feeding phase, the capping time being 45min.
By adopting the technical scheme, the electron beam cooling bed furnace casting, edge cleaning, capping and feeding method provided by the invention can effectively lighten a metal molten pool gradually, shrink the volume gradually, avoid damaging the continuity of a grain structure, and ensure that inclusions in the titanium ingot can float upwards and the shrinkage cavity volume is reduced by adopting the capping and feeding process for reducing the current and the power gradually by setting time harmonic value no matter the size of the titanium ingot. Effectively reduces the head cutting amount of the cast ingot, improves the yield of the titanium ingot, reduces the cost and increases the efficiency.
Drawings
FIG. 1 is a schematic view of an electron beam cold hearth furnace and associated metallurgical equipment according to one embodiment of the present invention;
fig. 2 is a flow chart of a method for casting, trimming, capping and feeding an electron beam cold bed furnace according to an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The electron beam melting is a method for melting materials by taking high-speed electron beams as melting heat sources, and the main working principle is as follows: under the high vacuum condition, the filament in the electron gun is heated and electrons are excited by a high-voltage electric field, electrons excited from the surface of the filament bombard the surface of the cathode at a high speed under the action of bombardment voltage, so that the cathode emits electrons due to heating, the electrons are focused and accelerated in the high-voltage electrostatic field, then electron beams with extremely high energy density are formed through magnetic transmission focusing, the high-speed electron beams bombard the surface of a workpiece or a material in the water-cooled copper crucible after being deflected for a certain angle, and the kinetic energy of the electron beams is mostly converted into heat energy, so that extremely large heat is generated, and the material is melted. Electron beam melting is performed at a high vacuum level, much higher than that of a typical melting furnace. The removal of gases, nonmetallic inclusions and certain deleterious evaporative elements from the material is therefore much more complete and thorough. The rate of the purification refining reaction is also higher than other vacuum furnaces. During the smelting process, the power of the melted charge and the power of the heated bath can be adjusted separately. The melt pool can still be maintained at the desired temperature as the melt rate is changed. The controllability of the electron beam is good, so the heating part of the molten pool can be controlled by controlling the electron beam, thereby ensuring the uniform temperature distribution of the molten pool. This will be advantageous in obtaining ingots with excellent surface quality and crystalline structure.
Fig. 1 is a schematic view showing a structure of an electron beam cold hearth furnace and related smelting equipment according to an embodiment of the present invention.
The electron beam cooling bed furnace mainly comprises an electron beam gun system, a feeding system, a smelting system, a casting system, a vacuum system and an electric power supply system.
The electron beam gun is a key component of the electron beam cold hearth furnace and mainly comprises an electron beam generating system, an electron beam accelerating system and an electron beam deflection system. The electron beam gun system of the electron beam cold hearth furnace comprises 4 electron guns, 2 guns (G1 and G2) are used for smelting in a primary smelting area A1 of the cold hearth furnace, 1 gun (G3) is used for smelting in a refining area A2 of the cold hearth furnace, and 1 gun (G4) is used for controlling the temperature of a molten pool in a crystallizer and feeding in the later period of ingot casting in a crystallization area A3.
The feeding system comprises two rotary drum feeders (namely a 1# rotary drum feeder L1 and a 2# rotary drum feeder L2), and when bulk materials are added, raw materials are sent out by a rotary raw material cylinder and then are put into a cooling bed by a vibration feeding feeder. The number of the feeders is 2, and the feeders can be used alternatively, and one feeder is used for preparing the other feeder during the feeding period. Thus, no intermittent feeding is possible. The raw material chamber and the smelting chamber are separated by a valve, and the maintenance of the raw material chamber and the smelting chamber can be completed under the condition of keeping the vacuum degree of the smelting chamber.
Smelting is performed in a large water-cooled copper bed. After the raw materials are melted, a layer of solidified shell is formed on the inner wall of the water-cooled copper bed, and the subsequent raw materials are melted in the solidified shell. The smelting consists of a primary smelting area A1 and a refining area A2. The melting process of the materials is as follows: the electron beams of the two electron guns G1 and G2 responsible for melting materials are shot to the materials to be melted, the materials to be melted are melted into a water-cooled copper cooling hearth with a primary smelting area A1 and a refining area A2, the electron gun G3 is responsible for refining the melted materials, the refined materials overflow into a crystallizer, the electron gun G4 is responsible for controlling the heat of an ingot crystallization area, the electron beams automatically scan according to set parameters so as to control the temperature of a metal liquid level to be uniform and form a heat field beneficial to the crystallization of the materials, the solidification of the metals in the crystallizer is controlled, and the solidified ingot is lowered in a set mode so as to obtain an ingot with uniform internal components and good defect-free surface quality.
The smelting of the titanium sponge comprises the steps of selecting the external quality of the titanium sponge with qualified chemical components, removing oxidized titanium sponge and foreign matters, weighing according to the batching requirement, weighing the returned burden material with qualified treatment, fully mixing titanium dioxide and iron nails according to a proportion, preparing an alloy bag, and adopting a horizontal feeding mode or a vertical feeding mode. When in horizontal feeding, the three materials are fully mixed and pressed into electrode blocks, and the bundle binding electrode is prepared. When the materials are vertically fed, the three materials are fully mixed and then preheated, and are fed in a bulk mode. And carrying out electron beam melting and ingot casting on the prepared electrode meeting the requirements, and then carrying out quality inspection on the ingot casting. Because the technology of the invention only relates to improvement in the aspects of edge cleaning, capping and feeding, the earlier smelting process of the titanium sponge is not described in detail.
The invention provides a method for carrying out melting casting, edge cleaning, capping and feeding on an electron beam cooling bed furnace, which generally comprises the following steps:
step S1: stopping feeding after the feeding is completed;
step S2: cleaning volatile matters adsorbed in the primary refining area of the cooling bed by using two electron guns responsible for the primary refining area of the cooling bed;
step S3: cleaning the volatile matters adsorbed in the cold bed refining area by using an electron gun responsible for the cold bed refining area;
step S4: closing the electron gun in charge of the primary refining area and the refining area of the cooling bed, and cleaning volatile matters adsorbed on the periphery of the crystallizer by using the electron gun in charge of the crystallization area;
step S5: after the volatile matters in the primary refining area, the refining area and the crystallization area of the cooling bed are cleaned, the cooling bed enters a capping feeding stage, and in the capping feeding stage, the scanning pattern of an electron gun responsible for the crystallization area is kept unchanged, and the scanning current is reduced in a mode of reducing the scanning current by 0.25A for 1min on average;
step S6: after the capping feeding is completed, the electron gun responsible for the crystallization area is turned off and enters a cooling stage.
The electron beam cooling bed furnace casting edge-cleaning capping feeding method provided by the invention can effectively lighten a metal molten pool gradually, shrink the volume gradually, avoid damaging the continuity of a grain structure, and ensure that inclusions in the titanium ingot can float upwards and the shrinkage cavity volume is reduced by adopting the capping feeding process for reducing the current and the power gradually through setting time harmonic values no matter the size of the titanium ingot. Effectively reduces the head cutting amount of the cast ingot, improves the yield of the titanium ingot, reduces the cost and increases the efficiency.
The individual operating steps are described in exemplary detail below.
In step S1, the feeding is stopped after the completion of the feeding. Specifically, two 1# drum feeders L1 and 2# drum feeders L2 as described above in connection with fig. 1 may be employed, with 1# drum feeders L1 and 2# drum feeders L2 being used interchangeably, one feeding the other during the feeding. After the blanking of the 1# rotary drum feeder L1 and the 2# rotary drum feeder L2 is completed, the inlet and outlet isolation valves of the 1# rotary drum feeder L1 and the 2# rotary drum feeder L2 are closed, and residual titanium sponge of the vibration feeder in the feeding chamber is completely removed, and the vibration feeder is required to be withdrawn if a furnace is required to be cleaned.
In step S2, the volatiles adsorbed in the cold hearth zone A1 are cleaned using two electron guns G1 and G2 responsible for the cold hearth zone A1. In some embodiments, the emission current of the two electron guns G1 and G2 responsible for the cold bed primary zone A1 is set to 11A, the voltage to 50kV, and the power to 550kW. And in the edge cleaning process, the scanning patterns are moved in the X and Y directions according to the positions of the volatile matters which are adsorbed and grown for cleaning.
In step S3, the volatiles adsorbed in the cold bed refining zone A2 are cleaned using an electron gun G3 responsible for the cold bed refining zone A2. In some embodiments, the emission current of the electron gun G3 responsible for the cold bed refining zone A2 is set to 10A, the voltage to 50kV, and the power to 500kW. Cleaning is performed by moving the scanning pattern in the X and Y directions according to the positions of the adsorbed and grown volatile matters.
In step S4, the electron guns G1, G2 and G3 responsible for the cold bed primary refining zone A1 and the cold bed refining zone A2 are turned off, and the volatiles adsorbed around the crystallizer are cleaned using the electron gun G4 responsible for the crystallization zone A3.
In some embodiments, the emission current of electron gun G4 responsible for crystallization zone A3 is set to 15A, the voltage to 50kV, and the power to 750kW.
In some embodiments, two crystallizers are provided, as shown, crystallizer No. 1, crystallizer No. J1, crystallizer No. 2, crystallizer No. J2, respectively.
In some embodiments, a crystallizer trimming line is provided and the smelting process is continued until the smelting is completed. Different scanning patterns are set for an electron gun responsible for a crystallization area aiming at an overflow port, a crystallizer positive surface, a crystallizer distal end, a crystallizer negative surface and a crystallizer pouring gate to serve as edge cleaning lines. The length of the scan pattern for the overflow port was 284mm, the width was 30mm, the length of the scan pattern for the mold was 1560mm, the width was 200mm, the length of the scan pattern for the mold male surface was 1560mm, the width was 10mm, the length of the scan pattern for the mold distal end was 143mm, the width was 180mm, the length of the scan pattern for the mold female surface was 1560mm, the width was 10mm, the length of the scan pattern for the mold gate was 127mm, the width was 190mm. The power density for the overflow is 0.49kw/cm 2 The dead time was 104ms and the power density for the crystallizer was 0.08kw/cm 2 Dead time of 620ms for the crystallizerThe power density of the male surface is 0.52kw/cm 2 The dead time was 200ms and the power density for the far end of the crystallizer was 0.13kw/cm 2 The dead time was 80ms and the power density for the mold shadow was 0.52kw/cm 2 The dead time was 200ms and the power density for the mold gate was 0.05kw/cm 2 The dead time is 30ms.
The electron beam scanning mode and delay time are very important melting parameters. The scanning mode determines the melting range of the materials in the furnace; the delay time determines the temperature of the bath. When the scanning mode is a first mode, the temperature of the molten pool changes along with the change of the delay time, when the delay time is long, the electron beam stays in one place for a long time, the temperature of the molten pool is high, the temperature difference is large, and the temperature of the whole molten pool is uneven; when the scanning mode is set, the delay time is properly shortened, and the uniformity of the surface temperature of the molten pool can be ensured.
The parameters of the electron gun G4 in each of the zones of the # 1 and # 2 crystallizers are shown in Table 1 below:
TABLE 1 crystallizer electron gun control parameters
The electron gun G4 moves the scanning pattern in the X and Y directions to clean the volatile matters adsorbed on the periphery of the crystallizer through the hot spot pattern.
In step S5, after the volatile matters in the primary refining area A1, the refining area A2 and the crystallization area A3 of the cooling bed are cleaned, the top-sealing feeding stage is carried out. When the cast ingot is solidified, because the density of the liquid state is smaller than that of the solid state, when the surface and the position close to the wall of the crystallizer start to solidify, the central area is still in the liquid state, and when the liquid state starts to solidify, the volume shrinkage cannot be supplemented by the melt, so that shrinkage holes are formed. By reasonably optimizing the electron gun scan and energy distribution, the shrinkage cavity volume can be effectively reduced. Thus, in some embodiments, during the capped feeding phase, the scan pattern of the electron gun G4 responsible for the crystallization zone remains unchanged (i.e., different scan patterns are employed for the overflow, the crystallizer male side, the crystallizer distal end, the crystallizer female side, and the crystallizer gate), while the scan current is reduced by 0.25A on average for 1 min. Specifically, in the capping feeding stage, the emission current of the electron gun G4 responsible for the crystallization area A3 was set to 11.25A, and the capping time was 45min.
In step S6, after the capping feeding is completed, the electron gun G4 responsible for the crystallization area A3 is turned off, and a 5-hour cooling stage is entered.
The method can effectively lighten the metal molten pool gradually, shrink the volume gradually, avoid damaging the continuity of grain structure, ensure that inclusions in the titanium ingot can float upwards and the shrinkage cavity volume is reduced, reduce the head cutting amount of the ingot, and improve the yield of the titanium ingot.
The foregoing examples merely illustrate embodiments of the invention and are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (10)
1. The method for melting, casting, edge cleaning, capping and feeding of the electron beam cooling bed furnace is characterized by comprising the following steps of:
step S1: stopping feeding after the feeding is completed;
step S2: cleaning volatile matters adsorbed in the primary refining area of the cooling bed by using two electron guns responsible for the primary refining area of the cooling bed;
step S3: cleaning the volatile matters adsorbed in the cold bed refining area by using an electron gun responsible for the cold bed refining area;
step S4: closing the electron gun responsible for the primary refining zone of the cooling bed and the refining zone of the cooling bed, and cleaning volatile matters adsorbed on the periphery of the crystallizer by using the electron gun responsible for the crystallization zone;
step S5: after the volatile matters in the primary refining area, the refining area and the crystallization area of the cooling bed are cleaned, the cooling bed enters a capping feeding stage, and in the capping feeding stage, the scanning pattern of an electron gun responsible for the crystallization area is kept unchanged, and the scanning current is reduced in a mode of reducing the average scanning current by 0.25A for 1 min;
step S6: and after the capping feeding is finished, the electron gun responsible for the crystallization area is closed, and a cooling stage is carried out.
2. The method according to claim 1, characterized in that in step S2, the emission current of the two electron guns responsible for the cold bed primary refining zone is set to 11A, the voltage to 50kV and the power to 550kW.
3. The method according to claim 2, wherein in step S2, cleaning is performed by moving the scan pattern in X, Y directions according to the position of the adsorbed and grown volatile matter.
4. The method according to claim 1, characterized in that in step S3 the emission current of the electron gun responsible for the cold bed refining zone is set to 10A, the voltage to 50kV and the power to 500kW.
5. The method according to claim 4, wherein in step S3, the cleaning is performed by moving the scan pattern in X, Y directions according to the positions of the adsorbed and grown volatile matter.
6. The method according to claim 1, characterized in that in step S4 the emission current of the electron gun responsible for the crystallization zone is set to 15A, the voltage to 50kV and the power to 750kW.
7. The method according to claim 1, characterized in that in step S4 different scan patterns are set as clearing lines for the electron gun responsible for the crystallization zone for overflow, crystallizer anode, crystallizer distal, crystallizer cathode and crystallizer gate.
8. The method according to claim 7, wherein in step S4, the scanning pattern for the overflow is 284mm long, 30mm wide, 1560mm long, 200mm wide, 1560mm wide, 10mm long, 143mm wide, 180mm long, 1560mm long, 10mm wide, and 190mm long for the mold gate.
9. The method of claim 8, wherein the power density for the overflow port is 0.49kw/cm 2 The dead time was 104ms and the power density for the crystallizer was 0.08kw/cm 2 A dead time of 620ms, a power density for the crystallizer anode surface of 0.52kw/cm 2 A dead time of 200ms and a power density of 0.13kw/cm for the far end of the crystallizer 2 A dead time of 80ms, a power density for the mold shadow of 0.52kw/cm 2 A dead time of 200ms, a power density for the mold gate of 0.05kw/cm 2 The dead time is 30ms.
10. The method according to claim 1, characterized in that in step S5, in the capping feeding phase, the emission current of the electron gun responsible for the crystallization zone is set to 11.25A, capping time 45min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311781125.8A CN117737446A (en) | 2023-12-21 | 2023-12-21 | Electron beam cooling bed furnace casting, edge cleaning and top sealing feeding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311781125.8A CN117737446A (en) | 2023-12-21 | 2023-12-21 | Electron beam cooling bed furnace casting, edge cleaning and top sealing feeding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117737446A true CN117737446A (en) | 2024-03-22 |
Family
ID=90279359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311781125.8A Pending CN117737446A (en) | 2023-12-21 | 2023-12-21 | Electron beam cooling bed furnace casting, edge cleaning and top sealing feeding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117737446A (en) |
-
2023
- 2023-12-21 CN CN202311781125.8A patent/CN117737446A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104032151B (en) | The EB cold hearth melting method of a kind of TC4 titan alloy casting ingot | |
| US3342250A (en) | Method of and apparatus for vacuum melting and teeming steel and steellike alloys | |
| 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 | |
| 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 | |
| CN105132705A (en) | Method and device for remelting and refining metals by vacuum magnetic-control arc | |
| CN116121551A (en) | Tantalum ingot produced by electron beam melting and production method | |
| US20130291595A1 (en) | Apparatus for manufacturing high purity polysilicon using electron-beam melting and method of manufacturing high purity polysilicon using the same | |
| CN111089484A (en) | Control system and control method of plasma cooling bed skull furnace | |
| CN107385244A (en) | A kind of electron beam covers the method that induced coagulation technology High Purity prepares nickel base superalloy | |
| CN116607028B (en) | Smelting method of refractory high-entropy alloy | |
| CN107760877A (en) | The method of smelting of ingot casting | |
| CN117737446A (en) | Electron beam cooling bed furnace casting, edge cleaning and top sealing feeding method | |
| CN212778615U (en) | Multi-electrode vacuum non-consumable arc melting device for titanium and titanium alloy | |
| RU2346221C1 (en) | Method of vacuum-plasma melting of metals and alloys in skull furnace and facility for its implementation | |
| CN110629116B (en) | Vacuum consumable melting method of 0Cr13Ni8Mo2Al stainless steel | |
| CN110951975A (en) | Method for smelting TA2 slab ingot by using cold cathode electron beam | |
| CN106702176A (en) | Melting method for bottom ingot used in electron beam cold hearth | |
| CN117737445A (en) | Electron beam cold hearth furnace and casting method for electron beam cold hearth furnace | |
| CN110484742B (en) | Method for preparing Fe-W intermediate alloy by electron beam melting and high purification | |
| CN109014088A (en) | Method of smelting | |
| RU74125U1 (en) | INSTALLATION FOR ELECTRON BEAM METAL Smelting | |
| CN112210673B (en) | Method for removing inclusions in high-temperature alloy through electron beam surface pyrolysis | |
| KR102531449B1 (en) | The fabricating method of titanium ingot | |
| CN115323186B (en) | Process for controlling height of high-temperature alloy vacuum arc remelting ingot crown |
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 |