Method and equipment for manufacturing secondary hardening alloy vacuum consumable steel ingot

Abstract

The invention relates to the technical field of metal manufacturing, in particular to a method and equipment for manufacturing a secondary hardening alloy vacuum consumable steel ingot, the equipment comprises a furnace body, a crucible, a crystallizer and a consumable electrode, and vacuum consumable smelting is a smelting method carried out in a vacuum environment. In the method, a melted material is used as an electrode, a water-cooled copper crucible is used as another electrode, arc striking is performed between the two electrodes, and the melted material is dropped into the crucible after being melted by the arc at high temperature, and is gradually melted and condensed into a spindle. In the production and manufacturing process of vacuum self-consuming smelting, a self-consuming machine is carried out in a relatively closed vacuum environment, the consumption state of the self-consuming machine is difficult to control in real time, the judgment of operators on the metal processing process is influenced, and meanwhile, due to the fact that a self-consuming electrode needs to be cooled for the second time in the vacuum self-consuming process, the production cost is reduced. And the cooling rate of molten metal in each area needs to be emphasized in the cooling process, so that segregation is avoided, and the final forming quality of a cast ingot is not influenced.

Description

Technical Field

[0001] The invention relates to the technical field of metal manufacturing, in particular to a manufacturing method and equipment for secondary hardening alloy vacuum consumable steel ingots. Background Art

[0002] Consumable electrode melting furnace (VAR), also known as vacuum consumable electrode arc melting, is a process in which consumable electrodes produced in an induction melting furnace are melted by controlled AC arc heating in a vacuum environment.

[0003] Vacuum consumable smelting is a smelting method carried out in a vacuum environment. In this method, the molten material is used as one electrode and the water-cooled copper crucible is used as the other electrode. An arc is struck between the two electrodes. The molten material is melted by the high temperature of the arc and then drips into the crucible, gradually melting and condensing into ingots. Vacuum consumable smelting can be used to improve the quality properties of special steels and remove impurities in the steel.

[0004] During the production and manufacturing process of vacuum consumable smelting, the consumable motor is carried out in a relatively closed vacuum environment. It is difficult to control its consumption status in real time, which affects the operator's judgment of the metal processing process. At the same time, since the consumable electrode needs to be cooled secondary during the vacuum consumable process, it is necessary to pay attention to the cooling rate of the molten metal in each area during the cooling process to avoid segregation and affect the final molding quality of the ingot.

[0005] In view of this, the present invention proposes a method and equipment for manufacturing a secondary hardening alloy vacuum consumable steel ingot, which solves the above technical problems. Summary of the invention

[0006] In order to address the deficiencies in the prior art, the present invention provides a manufacturing device for a secondary hardened alloy vacuum consumable steel ingot; thereby solving the problem that the existing vacuum consumable equipment is difficult to monitor the melting degree of the consumable electrode in real time, and is difficult to provide a variety of heat dissipation methods for the cooling process after the ingot is melted, thereby reducing the alloy manufacturing efficiency.

[0007] The technical solution adopted by the present invention to solve its technical problems is a manufacturing device for secondary hardening alloy vacuum consumable steel ingots, including a furnace body, a crucible, a crystallizer and a consumable electrode. The crucible is located in the furnace body, a crystallizer is arranged on the outside of the crucible, an arc generating assembly is arranged on the inside of the crucible, the consumable electrode is located in the furnace body, a sealing cylinder is fixedly installed on the top of the furnace body, an electrode cylinder is coupled and installed on the upper part of the sealing cylinder, an electrode rod is movably installed in the electrode cylinder, the lower end of the electrode rod is fixedly connected to the consumable electrode, a vacuum interface is fixedly arranged on the outer wall of the furnace body, a chamber for accommodating cooling water is arranged at the lower part of the furnace body, and a filter screen cover is arranged in the cooling water chamber. In addition, a weighing assembly is also included.

[0008] A base plate is installed on the outer side of the middle part of the furnace body, and the base plate is sealed and fitted with the outer wall of the furnace body. The fixed end of the weighing assembly is fixedly installed on the base plate, and the movable end of the weighing assembly is fixedly connected to the upper part of the sealing cylinder. A feeding motor is fixedly installed on the upper part of the base plate, and the electrode cylinder passes through the base plate, and the electrode cylinder and the base plate rotate in cooperation, and the output end of the feeding motor is coupled and connected with the upper end of the electrode cylinder.

[0009] The electrode rod is a two-section structure, the lower half of the electrode rod is fixedly connected to the consumable electrode, the upper half of the electrode rod is provided with an external thread, the inner side of the electrode tube is provided with a threaded ring meshing with the external thread of the electrode rod, the two sections of the electrode rod are fixedly connected by a coupling, and a plurality of tough spring pieces connected in sequence are provided in the middle of the coupling.

[0010] A connecting ring is fixedly installed on the inner side of the sealing tube, a connecting gear ring is rotatably installed in the connecting ring, an airflow channel is fixedly arranged on the inner side of the sealing tube, a connecting shaft is rotatably installed on the airflow channel, a connecting gear meshing with the connecting gear ring is fixed on one end of the connecting shaft, and a wind impeller matching the airflow in the airflow channel is fixedly installed on the other end of the connecting shaft.

[0011] A roller ring is arranged in the middle of the lower half of the electrode rod, an arc-shaped slide groove is provided at the end surface of the connecting gear ring, a sliding sheet is fixedly installed in the arc-shaped slide groove, the number of sliding sheets is two and they are distributed at different positions in the arc-shaped slide groove, and layout holes are evenly provided on the sliding sheet along the direction of its arc-shaped contour, a layout rod is inserted between the layout holes on the two sliding sheets, the axis of the layout rod is perpendicular to the axis of the connecting gear ring, and the layout rod is against the side wall of the roller ring on the electrode rod.

[0012] The straight-line distance between the axis of the layout rod and the axis of the upper half of the electrode rod is smaller than the radius of the lower half of the electrode rod.

[0013] The roller diameters arranged in the circumferential direction of the roller ring are arranged in large-small-large intervals. When the outer wall of the arrangement rod is in circumferential contact with the roller ring, the deflection angle between the lower half axis and the upper half axis of the electrode rod is 0-5 degrees.

[0014] A cooling plate is slidably mounted at the lower part of the sealing cylinder. The inner side of the cooling plate is hollow. The lower end surface of the cooling plate is evenly arranged on the conical teeth. The upper end surface of the crucible is evenly arranged with conical grooves matching the conical teeth. An adjusting tube is through-mounted on the sealing cylinder, and one end of the adjusting tube is connected to the inner cavity of the cooling plate.

[0015] The crucible is fixedly installed in the middle of the furnace body, and the internal cavity of the furnace body is divided into two parts at the installation and connection position of the crucible, and the two parts are not connected to each other. A heat dissipation gap is reserved between the outer wall of the crucible and the lower inner wall of the furnace body, and the heat dissipation gap is connected to the cooling water gap.

[0016] A sealing piece is fixedly installed on the bottom of the crucible, and a convex frustum is arranged on one side of the sealing piece facing the inner side of the crucible.

[0017] In addition, the present invention also provides a method for manufacturing a secondary hardened alloy vacuum consumable steel ingot, comprising the following steps: Step 1: First, remove impurities from the C276 nickel alloy machine edge material and other mixed scrap metal materials to ensure that the materials before entering the furnace are all C276 nickel alloy. After removing impurities, use a spectrometer to analyze its composition before loading into the furnace. Turn on the vacuum device, and when the vacuum degree reaches the limit, start the melting furnace switch to melt the nickel alloy; Step 2: No refining agent or slag removal agent is added during the melting process. When the molten metal is formed, a small amount is taken for furnace testing. According to the composition of the furnace test, a trace amount of elemental metal is added to adjust the composition; Step 3: The adjusted molten metal is poured into the mold through a mechanism, and after the mold is indirectly water-cooled, a C276 nickel alloy ingot is formed. The pouring process is under vacuum. After the ingot is formed, the ingot is taken out by breaking the vacuum; Step 4: The ingot after vacuum casting may have deficiencies in its organizational structure, and it is not ruled out that bubbles are mixed inside the ingot, which makes it incompatible with the subsequent forging process. In order to further improve the organizational structure of the ingot and remove the bubbles that may be mixed during the casting process, the ingot needs to be melted again in an electroslag remelting furnace; Step 5: After the ingot is melted by the electroslag remelting furnace, it is cooled again to form an ingot. At this time, in order to meet the structural performance requirements of special steel, the ingot is placed in the vacuum consumable furnace of the present invention as a consumable electrode for smelting. During smelting, the high temperature generated by the arc discharge between the consumable electrode and the crucible is used as a heat source under vacuum to melt the consumable electrode. The consumable electrode is made of the smelted metal material. During the smelting, the consumable electrode is continuously melted. At the same time, the re-condensed ingot is continuously solidified and increased from bottom to top in the crystallizer. The purpose of remelting is to produce a dense, defect-free, uniformly composed ingot with the required chemical composition, size and grain structure, and improve the metallurgical quality.

[0018] Beneficial effects of the present invention.

[0019] (1) The present invention can judge and measure the consumption status of the consumable electrode by measuring the induction value of the weighing component, so as to select the appropriate cooling and ingot removal time according to the smelting time, so as to meet the real-time monitoring degree of the vacuum consumable process by the staff.

[0020] (2) The coupling provided in the present invention can cause the upper and lower halves of the electrode rod to deflect within a certain angle range through its own ductile deformation. At the same time, the gap between the ductile spring sheets can achieve a heat insulation effect, thereby preventing excessive heat transfer to the outside during the melting of the consumable electrode, thereby improving the concentration of heat. By causing the consumable electrode to deflect circumferentially, the distribution area of ​​the falling metal droplets is expanded, and the metal droplets are gradually gathered from the edge to the center of the bottom of the crucible. In this process, since a crystallizer and cooling water are provided on the outer wall of the crucible, the metal droplets contact the low-temperature area at the edge of the crucible before dripping, and drip in a circular path, thereby further expanding the heat dissipation area and improving the cooling rate of the ingot. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the overall connection structure of the present invention; Figure 2 for Figure 1 A schematic diagram of the main view; Figure 3 It is a schematic diagram of the positional relationship between the furnace body and the crucible in the present invention; Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle; Figure 5 for Figure 3 The enlarged schematic diagram of point B in the middle; Figure 6 Schematic diagram of the positional relationship between the electrode cylinder and the sealing cylinder in the present invention; Figure 7 Schematic diagram of the positional relationship between the electrode rod and the electrode cylinder in the present invention; Figure 8 for Figure 7 The enlarged schematic diagram of point C in FIG. Fig. 9 Schematic diagram of the positional relationship between the electrode rod and the sealing cylinder in the present invention; Fig.10 for Fig. 9 The enlarged schematic diagram of D in FIG. Fig.11 It is a schematic diagram of the positional relationship between the cooling plate and the sealing cylinder in the present invention; Fig.12 for Fig.11 The enlarged schematic diagram of point E in FIG. In the figure: 1. furnace body; 2. crucible; 3. crystallizer; 4. consumable electrode; 5. sealing tube; 6. electrode tube; 7. electrode rod; 11. vacuum interface; 12. filter screen; 8. weighing assembly; 13. substrate; 14. feeding motor; 70. threaded ring; 71. coupling; 51. connecting ring; 52. connecting gear ring; 53. air flow channel; 54. connecting shaft; 55. connecting gear; 72. roller ring; 56. sliding plate; 561. layout hole; 562. layout rod; 57. cooling plate; 58. regulating tube; 9. sealing plate. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0024] The embodiment of the present invention solves the problem that the existing vacuum consumable equipment is difficult to monitor the melting degree of the consumable electrode in real time and to provide a variety of heat dissipation methods for the cooling process after the ingot is melted, thereby reducing the alloy manufacturing efficiency by providing manufacturing equipment for secondary hardening alloy vacuum consumable steel ingots.

[0025] like Figures 1 to 3 ,as well as Figure 6 and Figure 7 As shown, a preferred embodiment of the present invention provides a manufacturing device for secondary hardening alloy vacuum consumable steel ingot, comprising a furnace body 1, a crucible 2, a crystallizer 3 and a consumable electrode 4, wherein the crucible 2 is located in the furnace body 1, the crystallizer 3 is arranged on the outer side of the crucible 2, an arc generating assembly is arranged on the inner side of the crucible 2, the consumable electrode 4 is located in the furnace body 1, a sealing cylinder 5 is fixedly installed on the upper part of the furnace body 1, an electrode cylinder 6 is coupled and installed on the upper part of the sealing cylinder 5, an electrode rod 7 is movably installed in the electrode cylinder 6, the lower end of the electrode rod 7 is fixedly connected to the consumable electrode 4, a vacuum interface 11 is fixedly arranged on the outer wall of the furnace body 1, and the furnace body 1 is provided with a chamber for accommodating cooling water at the lower part, and a filter screen cover 12 is provided in the cooling water chamber. In addition, a weighing assembly 8 is also included. A base plate 13 is installed on the outer side of the middle part of the furnace body 1, and the base plate 13 is sealed and fitted with the outer wall of the furnace body 1. The fixed end of the weighing assembly 8 is fixedly installed on the base plate 13, and the movable end of the weighing assembly 8 is fixedly connected to the upper part of the sealing cylinder 5. A feeding motor 14 is fixedly installed on the upper part of the base plate 13, and the electrode cylinder 6 passes through the base plate 13, and the electrode cylinder 6 and the base plate 13 are rotatably matched, and the output end of the feeding motor 14 is coupled and connected with the upper end of the electrode cylinder 6.

[0026] During operation, one end of the consumable electrode 4 is fixedly connected to the lower half of the electrode rod 7, and then the consumable electrode 4 is placed in the crucible 2, and the furnace body 1 and the crucible 2 are assembled. Then, the inside of the furnace body 1 is evacuated as a whole through the vacuum interface 11. At this time, the weight of the consumable electrode 4 is applied to the electrode rod 7 and the electrode tube 6. At this time, the initial weight of the furnace body 1 is measured by the weighing component 8. Then, an arc is generated by the arc generating component inside the crucible 2, so that the consumable electrode 4 is subjected to vacuum consumable smelting under a vacuum environment. During this process, the molten metal droplets fall to the bottom of the crucible 2, and are gradually cooled under the action of the crystallizer 3 and the external cooling water, and the overall weight of the crucible 2 and the furnace body 1 is gradually increased. At this time, by measuring the induction value of the weighing component 8, the consumption status of the consumable electrode 4 can be judged and measured, so that the appropriate cooling and ingot removal time can be selected according to the smelting time, so as to meet the real-time monitoring degree of the vacuum consumable process by the staff.

[0027] Further, such as Figures 6 to 8 As shown, the electrode rod 7 is a two-section structure, the lower half of the electrode rod 7 is fixedly connected to the consumable electrode 4, the upper half of the electrode rod 7 is provided with an external thread, the inner side of the electrode tube 6 is provided with a threaded ring 70 meshing with the external thread of the electrode rod 7, the two sections of the electrode rod 7 are fixedly connected by a coupling 71, and a plurality of tough spring pieces connected in sequence are provided in the middle of the coupling 71. During the vacuum consumable process, the feeding motor 14 is controlled to operate so as to drive the electrode barrel 6 to rotate, and the electrode barrel 6 drives the threaded ring 70 to rotate. At this time, the electrode rod 7 is relatively still under the traction of the consumable electrode 4. Under the action of the thread, the electrode rod 7 gradually moves downward and drives the consumable electrode 4 to move downward, thereby filling the melting process of the lower end of the consumable electrode 4 under the action of the electric arc. The coupling 71 can cause the upper and lower halves of the electrode rod 7 to deflect within a certain angle range through its own tough deformation. At the same time, the gap between the tough spring pieces can achieve a heat insulation effect to avoid excessive heat transfer to the outside when the consumable electrode 4 is melted, thereby improving the heat concentration.

[0028] Further, such as Figures 9 to 12As shown, a connecting ring 51 is fixedly installed on the inner side of the sealing tube 5, and a connecting gear ring 52 is rotatably installed in the connecting ring 51. An airflow channel 53 is fixedly arranged on the inner side of the sealing tube 5, and a connecting shaft 54 ​​is rotatably installed on the airflow channel 53. A connecting gear 55 meshing with the connecting gear ring 52 is fixedly installed on one end of the connecting shaft 54, and a wind impeller matching the airflow in the airflow channel 53 is fixedly installed on the other end of the connecting shaft 54. A roller ring 72 is arranged in the middle of the lower half of the electrode rod 7, and an arc-shaped slide groove is opened at the end surface of the connecting gear ring 52. A slide plate 56 is fixedly installed in the arc-shaped slide groove. The number of slide plates 56 is two and they are distributed at different positions in the arc-shaped slide groove. The slide plate 56 is fixedly installed in the arc-shaped slide groove. 6 is evenly provided with laying holes 561 along the arc contour direction thereof, a laying rod 562 is inserted between the laying holes 561 on the two slides 56, the axis of the laying rod 562 is perpendicular to the axis of the connecting gear ring 52, and the laying rod 562 is against the side wall of the roller ring 72 on the electrode rod 7, the straight-line distance between the axis of the laying rod 562 and the axis of the upper half of the electrode rod 7 is smaller than the radius of the lower half of the electrode rod 7, the diameters of the rollers arranged in the circumferential direction of the roller ring 72 are arranged in a large-small-large interval manner, and when the outer wall of the laying rod 562 is in circumferential contact with the roller ring 72, the deflection angle between the axis of the lower half of the electrode rod 7 and the axis of the upper half is 5-15 degrees.

[0029] During the melting process of the consumable electrode 4, an air flow is introduced into the air flow channel 53 through an external air source, and the air flow then drives the wind impeller at the end of the connecting shaft 54 ​​to rotate, thereby driving the connecting gear 55 to rotate. At this time, the connecting gear ring 52 is rotated through the meshing action, and the sliding plate 56 is driven by the connecting gear ring 52 to rotate circumferentially, and then the layout rod 562 is driven by the sliding plate 56 to rotate circumferentially. The multiple layout holes 561 are provided, and the installation positions of the two ends of the layout rod 562 can be adjusted thereby. The distance between the layout rod 562 and the central axis of the crucible 2 can be adjusted according to the diameter of the consumable electrode 4 or the inner diameter of the crucible 2. During the circumferential rotation of the layout rod 562, it always maintains tangential contact with the outer wall of the lower half of the electrode rod 7, and through the abutment action, the electrode rod 7 is deflected in the direction away from the layout rod 562, thereby driving the consumable electrode 4 to deflect, so that the consumable electrode 4 During the melting process, the lower end swings circumferentially in a trumpet shape. In addition, by introducing the roller ring 72, the friction resistance value of the electrode rod 7 in the process of pushing the electrode rod 7 to deflect can be reduced. By controlling the installation and arrangement orientation of the roller with a gradually changing inner diameter of the roller ring 72, the distance between the electrode rod 7 and the axis of the lower half of the electrode rod 7 during the circumferential deflection is formed into a plum blossom path, thereby changing the deflection path of the lower end of the consumable electrode 4. When the bottom of the consumable electrode 4 is melted by the arc, the dripping metal droplets will drip circumferentially along the deflection path of the consumable electrode 4, and gradually gather and concentrate from the edge to the center of the bottom of the crucible 2. In this process, because the crystallizer 3 and cooling water are arranged at the outer wall of the crucible 2, the metal droplets contact the low-temperature area at the edge of the crucible 2 before dripping, and drip in a circular path, further expanding the heat dissipation area and improving the cooling rate of the ingot.

[0030] In addition, the thrust between the arrangement rod 562 and the roller ring 72 can further prevent the electrode rod 7 from self-rotating during the contact with the threaded ring 70 .

[0031] Further, such as Figure 3 , Figure 4 , Fig. 9 and Fig.11 As shown, a cooling plate 57 is slidably installed at the lower part of the sealing tube 5, the inner side of the cooling plate 57 is hollow, the lower end surface of the cooling plate 57 is evenly arranged on the conical teeth, the upper end surface of the crucible 2 is evenly arranged with conical grooves matching the conical teeth, an adjusting tube 58 is installed through the sealing tube 5, and one end of the adjusting tube 58 is connected with the inner cavity of the cooling plate 57, the crucible 2 is fixedly installed in the middle of the furnace body 1, the internal cavity of the furnace body 1 is divided into two at the installation and connection position of the crucible 2, and the two are not connected to each other, a heat dissipation gap is reserved between the outer wall of the crucible 2 and the lower inner wall of the furnace body 1, and the heat dissipation gap is connected with the cooling water gap.

[0032] When the consumable electrode 4 is completely consumed, during its cooling process, the regulating tube 58 is pushed to move toward the inside of the furnace body 1, thereby driving the cooling plate 57 to move toward the crucible 2, until the cooling plate 57 and the crucible 2 are completely fitted together. The provided conical teeth and conical grooves can increase the fitting area between the two, thereby improving the degree of heat dissipation and transfer on the upper part of the crucible 2. Subsequently, cooling water is introduced into the regulating tube 58, and the cooling water immediately enters the chamber of the cooling plate 57, and carries and transfers the heat from the direction of the crucible 2 through its own flow capacity, thereby further improving the heat dissipation rate in the furnace body 1 and the cooling rate of the ingot.

[0033] Further, such as Figure 3 and Figure 5 As shown, a plugging piece 9 is fixedly installed at the bottom of the crucible 2, and a convex frustum is provided on the side of the plugging piece 9 facing the inner side of the crucible 2. The frustum can improve the demoulding rate of the ingot after cooling, and at the same time, accelerate the cooling and solidification rate of the central area of ​​the bottom of the ingot through the concave port.

[0034] In addition, the present invention also provides a method for manufacturing a secondary hardened alloy vacuum consumable steel ingot, comprising the following steps: Step 1: First, remove impurities from the C276 nickel alloy machine edge material, mainly remove other scrap metal materials mixed in, to ensure that the materials before entering the furnace are all C276 nickel alloy. After removing impurities, use a spectrometer to analyze its composition before loading into the furnace. Turn on the vacuum device, and when the vacuum degree reaches a certain limit, start the melting furnace switch to melt the nickel alloy; Step 2: No refining agent or slag removal agent is added during the melting process. When the molten metal is formed, a small amount is taken by a specialized agency for furnace testing. According to the composition of the furnace test, a trace amount of elemental metal is added to adjust the composition; Step 3: The adjusted molten metal is poured into the mold through a mechanism, and after the mold is indirectly water-cooled, a C276 nickel alloy ingot is formed. The pouring process is under vacuum. After the ingot is formed, the ingot is taken out by breaking the vacuum; Step 4: The ingot after vacuum casting may have deficiencies in its organizational structure, and it is not ruled out that bubbles are mixed inside the ingot, which makes it incompatible with the subsequent forging process. In order to further improve the organizational structure of the ingot and remove the bubbles that may be mixed during the casting process, the ingot needs to be melted again in an electroslag remelting furnace; Step 5: After the ingot is melted by the electroslag remelting furnace, it is cooled again to form an ingot. At this time, in order to meet the structural performance requirements of special steel, the ingot is placed in the vacuum consumable furnace of the present invention as a consumable electrode 4 for smelting. During smelting, the high temperature generated by the arc discharge between the consumable electrode 4 and the crucible 2 is used as a heat source under vacuum to melt the consumable electrode 4. The consumable electrode 4 is made of a smelted metal material. During smelting, the consumable electrode 4 is continuously melted. At the same time, the re-condensed ingot is continuously solidified and increased from bottom to top in the crystallizer 3. The purpose of remelting is to produce a dense, defect-free, uniformly composed ingot with the required chemical composition, size and grain structure, and improve the metallurgical quality.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A manufacturing device for secondary hardening alloy vacuum consumable steel ingot, comprising a furnace body (1), a crucible (2), a crystallizer (3) and a consumable electrode (4), wherein the crucible (2) is located in the furnace body (1), the crystallizer (3) is arranged outside the crucible (2), an arc generating assembly is arranged inside the crucible (2), and the consumable electrode (4) is located in the furnace body (1), characterized in that: A sealing cylinder (5) is fixedly mounted above the furnace body (1), an electrode cylinder (6) is coupled to the upper part of the sealing cylinder (5), an electrode rod (7) is movably mounted in the electrode cylinder (6), the lower end of the electrode rod (7) is fixedly connected to the consumable electrode (4), a vacuum interface (11) is fixedly arranged at an outer wall position of the furnace body (1), a chamber for accommodating cooling water is arranged at the lower part of the furnace body (1), and a filter screen cover (12) is arranged in the cooling water chamber, and further comprising A weighing assembly (8), wherein a base plate (13) is installed on the outer side of the middle part of the furnace body (1), the base plate (13) and the outer wall of the furnace body (1) are sealed and fitted, the fixed end of the weighing assembly (8) is fixedly installed on the base plate (13), the movable end of the weighing assembly (8) is fixedly connected to the upper part of the sealing cylinder (5), a feeding motor (14) is fixedly installed on the upper part of the base plate (13), the electrode cylinder (6) rotates through the base plate (13), and the electrode cylinder (6) and the base plate (13) rotate in coordination, and the output end of the feeding motor (14) is coupled and connected to the upper end of the electrode cylinder (6).

2. The manufacturing equipment of the secondary hardening alloy vacuum consumable steel ingot according to claim 1, characterized in that: The electrode rod (7) is a two-section structure, the lower section of the electrode rod (7) is fixedly connected to the consumable electrode (4), the upper section of the electrode rod (7) is provided with an external thread, the inner side of the electrode cylinder (6) is provided with a threaded ring (70) meshing with the external thread of the electrode rod (7), the two sections of the electrode rod (7) are fixedly connected via a coupling (71), and a plurality of sequentially connected tough spring pieces are provided in the middle of the coupling (71).

3. The manufacturing equipment of the secondary hardening alloy vacuum consumable steel ingot according to claim 1, characterized in that: A connecting ring (51) is fixedly mounted on the inner side of the sealing tube (5), a connecting gear ring (52) is rotatably mounted inside the connecting ring (51), an air flow channel (53) is fixedly arranged on the inner side of the sealing tube (5), a connecting shaft (54) is rotatably mounted on the air flow channel (53), a connecting gear (55) meshing with the connecting gear ring (52) is fixedly mounted on one end of the connecting shaft (54), and a fan impeller matching the air flow in the air flow channel (53) is fixedly mounted on the other end of the connecting shaft (54).

4. The manufacturing equipment of the secondary hardening alloy vacuum consumable steel ingot according to claim 3, characterized in that: A roller ring (72) is provided in the middle of the lower half of the electrode rod (7), an arc-shaped slide groove is provided at the end surface of the connecting gear ring (52), a slide plate (56) is fixedly installed in the arc-shaped slide groove, the number of the slide plates (56) is two and they are distributed at different positions in the arc-shaped slide groove, the slide plates (56) are evenly provided with layout holes (561) along the direction of their arc-shaped contours, a layout rod (562) is inserted between the layout holes (561) on the two slide plates (56), the axis of the layout rod (562) is perpendicular to the axis of the connecting gear ring (52), and the layout rod (562) is against the side wall of the roller ring (72) on the electrode rod (7).

5. The manufacturing equipment of the secondary hardening alloy vacuum consumable steel ingot according to claim 4, characterized in that: The straight-line distance between the axis of the layout rod (562) and the axis of the upper half of the electrode rod (7) is smaller than the radius of the lower half of the electrode rod (7).

6. The manufacturing equipment of secondary hardening alloy vacuum consumable steel ingot according to claim 5, characterized in that: The diameters of the rollers arranged in the inner circumferential direction of the roller ring (72) are arranged in a large-small-large interval pattern, and when the outer wall of the arrangement rod (562) is in circumferential contact with the roller ring (72), the deflection angle between the lower half axis and the upper half axis of the electrode rod (7) is 0 to 5 degrees.

7. The manufacturing equipment of secondary hardening alloy vacuum consumable steel ingot according to claim 1, characterized in that: A cooling plate (57) is slidably mounted on the lower part of the sealing tube (5), the inner side of the cooling plate (57) is hollow, the lower end surface of the cooling plate (57) is evenly arranged on the conical teeth, the upper end surface of the crucible (2) is evenly arranged with conical grooves matching the conical teeth, and an adjusting tube (58) is installed through the sealing tube (5), and one end of the adjusting tube (58) is connected to the inner cavity of the cooling plate (57).

8. The manufacturing equipment of secondary hardening alloy vacuum consumable steel ingot according to claim 1, characterized in that: The crucible (2) is fixedly mounted in the middle of the furnace body (1); the internal cavity of the furnace body (1) and the mounting connection position of the crucible (2) are divided into two parts and are not connected to each other; a heat dissipation gap is reserved between the outer wall of the crucible (2) and the lower inner wall of the furnace body (1), and the heat dissipation gap is connected to the cooling water gap.

9. The manufacturing equipment of secondary hardening alloy vacuum consumable steel ingot according to claim 8, characterized in that: A sealing piece (9) is fixedly mounted on the bottom of the crucible (2), and a convex frustum is provided on a surface of the sealing piece (9) facing the inner side of the crucible (2).

10. A method for preparing a manufacturing device for a secondary hardening alloy vacuum consumable steel ingot using any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1: First, remove impurities from the C276 nickel alloy machine edge material and other mixed scrap metal materials to ensure that the materials before entering the furnace are all C276 nickel alloy. After removing impurities, use a spectrometer to analyze its composition and then load it into the furnace. Turn on the vacuum device. When the vacuum degree reaches the limit, start the melting furnace switch to melt the nickel alloy. Step 2: No refining agent or slag removal agent is added during the melting process. When the molten metal is formed, a small amount is taken for furnace testing. According to the composition of the furnace test, a trace amount of elemental metal is added to adjust the composition; Step 3: The adjusted molten metal is poured into the mold through a mechanism, and the mold is indirectly water-cooled to form a C276 nickel alloy ingot. The pouring process is under a vacuum state. After the ingot is formed, the ingot is taken out by breaking the vacuum; Step 4: The ingot is melted again in an electroslag remelting furnace to remove bubbles that may be included in the pouring process; Step 5: After the ingot is melted in the electroslag remelting furnace, it is cooled again to form an ingot. At this time, the ingot is placed in a vacuum consumable furnace to be smelted as a consumable electrode (4). During the smelting, the high temperature generated by the arc discharge between the consumable electrode (4) and the crucible (2) is used as a heat source under vacuum to melt the consumable electrode (4). The consumable electrode (4) is made of the metal material to be smelted. During the smelting, the consumable electrode (4) is continuously melted.

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