CN112280989A - Method for preparing steel ingot of tool and die steel through double-electrode electroslag remelting and electroslag remelting device - Google Patents
Method for preparing steel ingot of tool and die steel through double-electrode electroslag remelting and electroslag remelting device Download PDFInfo
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- CN112280989A CN112280989A CN202011191665.7A CN202011191665A CN112280989A CN 112280989 A CN112280989 A CN 112280989A CN 202011191665 A CN202011191665 A CN 202011191665A CN 112280989 A CN112280989 A CN 112280989A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 163
- 239000010959 steel Substances 0.000 title claims abstract description 163
- 238000000034 method Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 125
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 239000002893 slag Substances 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 65
- 238000007789 sealing Methods 0.000 claims description 23
- 238000005507 spraying Methods 0.000 claims description 21
- 238000010992 reflux Methods 0.000 claims description 9
- 229910000926 A-3 tool steel Inorganic materials 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 9
- 239000000498 cooling water Substances 0.000 description 6
- 229910001315 Tool steel Inorganic materials 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
Abstract
The invention provides a method for preparing a steel ingot of a tool die steel through double-electrode electroslag remelting, which is characterized in that double electrodes are arranged in a crystallizer, the crystallizer is arranged on a flange surface of a bottom water tank through a steel bottom plate, when remelting starts, electric slagging remelting is firstly carried out on the double electrodes, after the steel ingot formed by dropping and solidifying molten steel molten by the electrodes is adhered to the steel bottom plate, water is introduced into the bottom water tank for cooling, and the electroslag remelting is finished. The invention also provides an electroslag remelting device used for the preparation method, and the method firstly fuses and adheres the steel ingot formed by molten steel and the steel bottom plate, and then leads water to the bottom water tank for cooling, thereby utilizing the direct adhesion of the steel bottom plate and the steel ingot, improving the heat conduction efficiency during remelting and cooling, and eliminating slag shells and air gaps generated at the bottom of the steel ingot.
Description
Technical Field
The invention relates to the technical field of preparation of steel ingots of tool and die steels, in particular to a method for preparing steel ingots of tool and die steels through double-electrode electroslag remelting, and also relates to an electroslag remelting device for the preparation method.
Background
The tool and die steel is the most important component of the die, is also the most widely applied material in the die material, is an important material carrier and technical basis of the tool and die manufacturing industry, and the variety, specification and quality of the tool and die steel play a decisive role in the performance, service life and manufacturing cycle of the tool and die. Electroslag remelting is a method for smelting by using resistance heat generated when current passes through slag as a heat source, and mainly aims to purify metal and obtain a clean steel ingot with a uniform and compact structure. At present, the electroslag remelting process is used for preparing a tool and die steel ingot, and the electroslag remelting process is a commonly adopted mode, and most of the electroslag remelting process is in a single-electrode form, but the defects that a slag shell and an air gap are generated between the bottom of a remelted steel ingot and a copper plate, the cooling heat conduction efficiency is influenced, the cast structure segregation of a steel ingot core is serious and the like exist in the prior art.
Disclosure of Invention
In view of the above, the present invention aims to provide a method for preparing a steel ingot of a tool and mold steel by double-electrode electroslag remelting, which can improve the heat conduction efficiency during remelting and cooling and eliminate skull and air gaps generated at the bottom of the steel ingot.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for preparing steel ingots of tool and die steel through double-electrode electroslag remelting comprises the steps of arranging double electrodes in a crystallizer, arranging the crystallizer on a flange surface of a bottom water tank through a steel bottom plate, conducting electroslag remelting to the double electrodes at the beginning of remelting, enabling the steel ingots formed by molten steel to be fused and adhered to the steel bottom plate, and then enabling the bottom water tank to be filled with water for cooling until electroslag remelting is finished.
Further, the thickness of the steel base plate is 16-30 mm.
Further, the steel bottom plate is made of A3 steel.
Further, the middle region of the steel bottom plate in the mold has a convex protrusion.
Furthermore, the bottom water tank is provided with a spraying hole, and the steel bottom plate is sprayed with water through the spraying hole for cooling.
Further, the arrangement density of the spraying holes close to the middle area of the bottom water tank is greater than that of the area close to the edge of the bottom water tank.
Compared with the prior art, the invention has the following advantages:
according to the method for preparing the steel ingot of the tool and die steel through the double-electrode electroslag remelting, the steel ingot formed by molten steel is fused and adhered with the steel bottom plate, and then water is introduced into the bottom water tank for cooling, so that slag shells and air gaps generated at the bottom of the steel ingot can be eliminated by utilizing the direct adhesion of the steel bottom plate and the steel ingot, and the heat conduction efficiency and the cooling effect during remelting and cooling are improved.
The invention also provides an electroslag remelting device for preparing a steel ingot of a tool and die through double-electrode electroslag remelting.
Further, the end water tank is equipped with annular first unit that sprays, and is located the second in the first unit that sprays the unit, the second spray the unit have nested outer spray ring, interior spray ring that sets up and connect in spray ring inside be the shower of intercrossing fork type arrangement, just first spray the unit with the second sprays and all is equipped with on the unit and sprays the hole, the inlet tube of end water tank include with first inlet tube that sprays the unit and link to each other, and with the second sprays the second inlet tube that the unit links to each other.
Furthermore, an exhaust pipe is arranged at the top of the bottom water tank, and a drainage inclined plate which is inclined downwards towards the water outlet pipe of the bottom water tank is arranged at the bottom in the bottom water tank.
Furthermore, a sealing ring groove is formed in the flange surface and close to the edge, a sealing ring is arranged in the sealing ring groove, an overflow backflow groove is formed in the outer side of the sealing ring groove, and backflow holes penetrating through the bottom water tank are formed in the sealing ring groove and the overflow backflow groove respectively.
The electroslag remelting device for preparing the steel ingot of the tool and die steel through the double-electrode electroslag remelting can be used for preparing the steel ingot of the tool and die steel through the double-electrode electroslag remelting, and has the same advantages as the preparation method.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of an electroslag remelting apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a bottom water tank according to an embodiment of the present invention;
FIG. 3 is a schematic view of section A-A in FIG. 2;
FIG. 4 is a schematic view of section B-B of FIG. 2;
FIG. 5 is a schematic structural diagram of an electroslag remelting apparatus for a steel base plate with a protrusion according to an embodiment of the present invention;
description of reference numerals:
1. a housing; 2. a flange face; 3. a first water inlet pipe; 4. a second water inlet pipe; 5. a water outlet pipe; 6. an exhaust pipe; 7. a first spray ring; 8. an outer spray ring; 9. an inner spray ring; 10. a shower pipe; 11. a support bar; 12. a sealing ring groove; 13. an overflow reflux tank; 14. a water inlet clapboard; 15. a hoisting ring; 16. a drainage sloping plate; 17. a drain hole; 18. a crystallizer; 19. an electrode; 20. electroslag; 21. steel ingot; 22. a steel bottom plate;
701. a first spray hole; 801. a second spray hole; 901. a third spray hole; 1001. a fourth spray hole; 1201. a first return orifice; 1301. a second return orifice; 2101. a projection.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The embodiment relates to an electroslag remelting device for preparing a steel ingot of a tool die steel through double-electrode electroslag remelting, which is shown in fig. 1 and fig. 2 to 4, and comprises a bottom water tank, a steel bottom plate 22 arranged on a flange surface 2 of the bottom water tank, a crystallizer 18 arranged on the steel bottom plate 22 and used for bearing electroslag 20, and double electrodes also arranged in the crystallizer 18.
The bottom water tank is structurally provided with a shell 1, a flange face 2 is fixedly connected to the top of the shell 1, and the middle area of the flange face 2 is also arranged in a penetrating manner, so that each spraying unit can spray cooling water to a steel bottom plate 17 arranged on the flange face 2.
As a preferred embodiment, the bottom water tank of the present embodiment is provided with spray holes, and as described above, water is sprayed to the steel bottom plate through the spray holes for cooling during operation. In this case, as an exemplary configuration of the spray cooling method, in the present embodiment, a ring-shaped first spray unit and a second spray unit located in the first spray unit are provided in the bottom water tank.
For the first spraying unit, it is specifically the first spraying ring 7 disposed in the housing 1, and a plurality of first spraying holes 701 are disposed at the top of the first spraying ring 7, and the first spraying holes 701 are distributed at intervals along the circumferential direction of the first spraying ring 7. And for the second spray unit described above, it has an outer spray ring 8, an inner spray ring 9, which are nested, and spray pipes 10 connected inside the inner spray ring 9 in a cross arrangement.
Similar to the first spray ring 7, the top of the outer spray ring 8 is provided with a second spray hole 801, the top of the inner spray ring 9 is provided with a third spray hole 901, and meanwhile, the top of each spray pipe 10 is also provided with a fourth spray hole 1001. The spray holes on the outer spray ring 8, the inner spray ring 9 and the spray pipe 10 are also uniformly distributed, and in this embodiment, the opening direction of each spray hole on the top can be generally designed to be arranged in the forward direction. In addition, corresponding to the arrangement of the two spraying units, the water inlet pipe on the bottom water tank specifically comprises a first water inlet pipe 3 connected with a first spraying ring 7, and a second water inlet pipe 4 connected with an outer spraying ring 8, an inner spraying ring 9 and a spraying pipe 10 in the second spraying unit.
As a further preferred embodiment, as shown in fig. 2, in order to ensure the spraying effect at the spray holes in the second spray unit, a water inlet baffle 14 for blocking the flow of the inlet water may be provided in the outer spray ring 8 and the inner spray ring 9, respectively. The two water inlet partition plates 14 are arranged approximately in line with one of the shower pipes 10 and the part of the second water inlet pipe 4 located in the housing 1 to form an even separation of the outer spray ring 8 and the inner spray ring 9, so that the effect of evenly spraying water through each spray hole is achieved.
In this embodiment, each spray ring and each spray pipe are disposed close to the top of the housing, and at the same time, the top of the housing 1 is further provided with an exhaust pipe 6, and in addition, the bottom of the housing 1 is also provided with a water outlet pipe 5, and the housing 1 is further provided with a water drain hole 17, so that the cooling water sprayed and falling can enter the water outlet pipe 5 through the water drain hole 17 and can be discharged through the water outlet pipe 5.
In order to improve the water outlet effect of the bottom water tank, in the present embodiment, a drainage sloping plate 16 which is declined towards the direction of the water outlet pipe 5 is further arranged at the bottom in the bottom water tank. In addition, in order to prevent the cooling water sprayed to the bottom of the steel bottom plate 17 from flowing out along the top surface of the flange surface 2, in this embodiment, a sealing ring groove 12 is also provided on the flange surface 2 near the edge thereof, a sealing ring is provided in the sealing ring groove 12, an overflow return groove 13 is further provided outside the sealing ring groove 12, and a first return hole 1201 and a second return hole 1301 penetrating into the bottom tank are provided in the sealing ring groove 12 and the overflow return groove 13, respectively.
A part of the cooling water flowing out along the surface of the flange surface 2 can be blocked by the sealing ring and can flow back into the housing 1, and a part of the cooling water flowing to the outer side of the sealing ring enters the overflow return groove 13 and flows back into the housing 1 through the second return hole 1301, so that the cooling water can be better prevented from flowing out of the bottom water tank.
The present embodiment is directed to a steel base plate 22, which may be generally configured to have a thickness of between 16-30mm, and may be, for example, 16mm, 20mm, 22mm, 25mm, 27mm, 28mm, or 30mm when implemented. The steel base plate 22 is preferably made of A3 steel.
Furthermore, in addition to the structure shown in fig. 1, the steel bottom plate 22 of the present embodiment may be designed as shown in fig. 5, in which case a convex protrusion portion 1701 is provided in the middle region of the steel bottom plate 22 within the mold 18. Further, the steel bottom plate 22 shown in fig. 1 is generally used for the production of a remelted steel ingot having a small gauge, and the steel bottom plate 22 shown in fig. 5 is used for a remelted steel ingot having a large gauge, so that the deformation of the steel bottom plate 22 can be reduced by the thickness of the convex portion 1701 when producing a large steel ingot.
The crystallizer 18 of the present embodiment is placed on a steel bottom plate 22, the electroslag 20 is filled in the crystallizer 18, two electrodes 19 are inserted into the electroslag 20, and the two electrodes 19 are used as a positive electrode and a negative electrode to form a dual-electrode structure. In addition, in order to improve the supporting capability of the middle area of the steel bottom plate 22, a plurality of support rods 11 are also arranged in the housing 1, and each support rod 11 is located between the outer spray ring 8 and the inner spray ring 9 and is arranged in a ring shape. And a plurality of hanging rings 15 are also arranged on the outer side wall of the shell 1 for facilitating the movement of the bottom water tank.
When the electroslag remelting device of the embodiment works, the method for preparing the steel ingot of the tool and die steel through the double-electrode electroslag remelting is specifically that when remelting starts, the two electrodes 19 are electrified for remelting, after the steel ingot 21 formed by molten steel is fused and adhered with the steel bottom plate 22, water is introduced into the bottom water tank for cooling, and the remelting is completed by the electroslag 20.
In the method, the water passing time can be generally obtained through limited tests and is used as the basis for process execution, and the time for starting water passing from the electrode to the bottom water tank is generally between 5 and 35 min. In general, the embodiment can also judge whether the water passing time is up to the water passing time according to the temperature of the steel plate through detecting the temperature of the steel plate, so that the convenience and the accuracy of grasping the water passing time can be improved.
According to the electroslag remelting device and the corresponding method for preparing the steel ingot of the tool and die steel, the steel ingot 21 formed by molten steel is fused and adhered with the steel bottom plate 22, and then the bottom water tank is filled with water for cooling, so that the direct adhesion of the steel bottom plate 22 and the steel ingot 21 is utilized, the heat conduction efficiency during remelting and cooling can be improved, and a slag shell and an air gap generated at the bottom of the steel ingot 21 can be eliminated through the adhesion between the steel bottom plate 22 and the steel bottom plate, so that the electroslag remelting device has a good using effect.
The method for producing a steel ingot of tool and die steel according to the present embodiment will be further described with reference to several examples.
Example 1
The embodiment relates to preparation of an M2 high-speed tool steel phi 400 remelting steel ingot, which specifically comprises the following steps:
and (3) checking the water inlet valve of the bottom water tank to enable the water inlet valve to be in a closed state, and cleaning waste residues and sundries in the sealing ring groove 12 and the overflow reflux groove 13 on the bottom water flange surface 2. A steel bottom plate 22 made of A3 steel and with the thickness of 24mm is placed, a phi 400 ingot crystallizer is placed, the two clamped electrodes 19 are inserted into the crystallizer, and electroslag 20 is poured in. And (3) electrifying the electrode 19 to carry out slagging, observing and measuring the edge temperature of the steel base plate 22 in the slagging process, opening an inlet valve of the bottom water tank to lead water to cool the steel base plate 22 when the edge temperature of the steel base plate 22 reaches 200 ℃, and beginning electrifying to lead water to the bottom water tank for 19 min.
After the remelting process is finished, the steel ingot is forged, cogging and finish-forged into a material.
The phi 135mm forged material formed by the steel ingot through precision forging is tested according to national standards GB/T14979 and GB/T9433, and the results are as follows:
example 2
The embodiment relates to an M42 high-speed tool steel phi 400 remelting steel ingot, which specifically comprises the following steps:
and (3) checking the water inlet valve of the bottom water tank to enable the water inlet valve to be in a closed state, and cleaning waste residues and sundries in the sealing ring groove 12 and the overflow reflux groove 13 on the bottom water flange surface 2. A steel bottom plate 22 made of A3 steel and with the thickness of 24mm is placed, a phi 400 ingot crystallizer is placed, the two clamped electrodes 19 are inserted into the crystallizer, and electroslag 20 is poured in. And (3) electrifying the electrode 19 to carry out slagging, observing and measuring the edge temperature of the steel base plate 22 in the slagging process, opening a water inlet valve of the bottom water tank to lead water to cool the steel base plate 22 when the edge temperature of the steel base plate 22 reaches 195 ℃, and beginning electrifying to lead water to the bottom water tank for 18 min.
After the remelting process is finished, the steel ingot is forged, cogging and finish-forged into a material.
The phi 160mm forged steel produced by the steel ingot is tested according to national standards GB/T14979 and GB/T9433, and the results are as follows:
example 3
The embodiment relates to an M2 high-speed tool steel phi 450 remelting steel ingot, which specifically comprises the following steps:
and (3) checking the water inlet valve of the bottom water tank to enable the water inlet valve to be in a closed state, and cleaning waste residues and sundries in the sealing ring groove 12 and the overflow reflux groove 13 on the bottom water flange surface 2. A steel bottom plate 22 made of A3 steel and with the thickness of 28mm is placed, a phi 450 ingot crystallizer is placed, the two clamped electrodes 19 are inserted into the crystallizer, and electroslag 20 is poured in. And (3) electrifying the electrode 19 to carry out slagging, observing and measuring the edge temperature of the steel bottom plate 22 in the slagging process, opening a water inlet valve of the bottom water tank to lead water to cool the steel bottom plate 22 when the edge temperature of the steel bottom plate 22 reaches 185 ℃, and beginning electrifying to lead water to the bottom water tank for 21 min.
After the remelting process is finished, the steel ingot is forged, cogging and finish-forged into a material.
The phi 193mm forged steel produced by the steel ingot is tested according to national standards GB/T14979 and GB/T9433, and the results are as follows:
example 4
The embodiment relates to an M2 high-speed tool steel phi 500 remelting steel ingot, which specifically comprises the following steps:
and (3) checking the water inlet valve of the bottom water tank to enable the water inlet valve to be in a closed state, and cleaning waste residues and sundries in the sealing ring groove 12 and the overflow reflux groove 13 on the bottom water flange surface 2. A steel bottom plate 22 made of A3 steel and with the thickness of 28mm is placed, a phi 500 ingot crystallizer is placed, the two clamped electrodes 19 are inserted into the crystallizer, and electroslag 20 is poured in. And (3) electrifying the electrode 19 to carry out slagging, observing and measuring the edge temperature of the steel base plate 22 in the slagging process, opening a water inlet valve of the bottom water tank to feed water to cool the steel base plate 22 when the edge temperature of the steel base plate 22 reaches 180 ℃, and beginning to electrify the bottom water tank to feed water for 22 min.
After the remelting process is finished, the steel ingot is forged, cogging and finish-forged into a material.
The phi 232mm forged steel produced by the steel ingot is tested according to national standards GB/T14979 and GB/T9433, and the results are as follows:
example 5
The embodiment relates to an M35 high-speed tool steel phi 500 remelting steel ingot, which specifically comprises the following steps:
and (3) checking the water inlet valve of the bottom water tank to enable the water inlet valve to be in a closed state, and cleaning waste residues and sundries in the sealing ring groove 12 and the overflow reflux groove 13 on the bottom water flange surface 2. A steel bottom plate 22 made of A3 steel and with the thickness of 28mm is placed, a phi 500 ingot crystallizer is placed, the two clamped electrodes 19 are inserted into the crystallizer, and electroslag 20 is poured in. And (3) electrifying the electrode 19 to carry out slagging, observing and measuring the edge temperature of the steel bottom plate 22 in the slagging process, opening a water inlet valve of the bottom water tank to feed water to cool the steel bottom plate 22 when the edge temperature of the steel bottom plate 22 reaches 185 ℃, and beginning to electrify the bottom water tank to feed water for 23 min.
After the remelting process is finished, the steel ingot is forged, cogging and finish-forged into a material.
The phi 285mm forged steel produced by the steel ingot is tested according to national standards GB/T14979 and GB/T9433, and the results are as follows:
as can be seen from the above examples, the internal structure performance of the product prepared by the preparation method of the embodiment is better than that of the conventional product, so that the product quality of the prepared tool and die steel can be improved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for preparing a steel ingot of a tool and die steel through double-electrode electroslag remelting is characterized by comprising the following steps: the method comprises the steps of arranging a double electrode in a crystallizer (18), arranging the crystallizer (18) on a flange surface (2) of a bottom water tank through a steel bottom plate (22), feeding molten slag to the double electrode for remelting when remelting starts, enabling molten steel molten in the electrode to drip and solidify to form a steel ingot (21) and adhering the steel bottom plate (22), and then enabling the bottom water tank to be filled with water for cooling until the remelting process of electroslag (20) is finished.
2. The method for preparing a steel ingot of tool and die steel through double-electrode electroslag remelting according to claim 1, wherein the method comprises the following steps: the thickness of the steel bottom plate (22) is 16-30 mm.
3. The method for preparing a steel ingot of tool and die steel through double-electrode electroslag remelting according to claim 1, wherein the method comprises the following steps: the steel bottom plate (22) is made of A3 steel.
4. The method for preparing a steel ingot of tool and die steel through double-electrode electroslag remelting according to claim 1, wherein the method comprises the following steps: the steel base plate (22) has a convex bulge (1701) in its central region located in the mold (18).
5. The method for preparing a steel ingot of tool and die steel according to double-electrode electroslag remelting according to any one of claims 1 to 4, wherein: and the bottom water tank is provided with a spraying hole, and water is sprayed to the steel bottom plate (22) through the spraying hole for cooling.
6. The method for preparing a steel ingot of tool and die steel through double-electrode electroslag remelting according to claim 5, wherein the method comprises the following steps: the arrangement density of the spraying holes close to the middle area of the bottom water tank is greater than that of the area close to the edge of the bottom water tank.
7. The electroslag remelting device for preparing the steel ingot of the tool and die steel through double-electrode electroslag remelting is characterized in that: the electroslag remelting device comprises a bottom water tank, a steel bottom plate (22) arranged on a flange surface (2) of the bottom water tank, a crystallizer (18) arranged on the steel bottom plate (22) and used for bearing electroslag (20), and double electrodes arranged in the crystallizer (18).
8. The electroslag remelting device for preparing a steel ingot of a tool and die steel through double-electrode electroslag remelting according to claim 7, wherein the electroslag remelting device comprises: the bottom water tank is internally provided with an annular first spray unit and is positioned in the first spray unit, the second spray unit is provided with an outer spray ring (8) and an inner spray ring (9) which are nested, and is connected with a spray pipe (10) which is arranged in the inner spray ring (9) in a crossed manner, the first spray unit is provided with spray holes on the second spray unit, the water inlet pipe of the bottom water tank comprises a first water inlet pipe (3) connected with the first spray unit, and a second water inlet pipe (4) connected with the second spray unit.
9. The electroslag remelting device for preparing a steel ingot of a tool and die steel through double-electrode electroslag remelting according to claim 7, wherein the electroslag remelting device comprises: an exhaust pipe (6) is arranged at the top of the bottom water tank, and a drainage inclined plate (16) which is arranged in a downward inclination way towards the direction of a water outlet pipe (5) of the bottom water tank is arranged at the bottom in the bottom water tank.
10. The electroslag remelting device for preparing a steel ingot of a tool and die steel through double-electrode electroslag remelting according to claim 7, wherein the electroslag remelting device comprises: and a sealing ring groove (12) is arranged on the flange surface (2) close to the edge, a sealing ring is arranged in the sealing ring groove (12), an overflow reflux groove (13) is also arranged on the outer side of the sealing ring groove (12), and reflux holes penetrating through the sealing ring groove (12) and the overflow reflux groove (13) are respectively arranged in the bottom water tank.
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| CN202011191665.7A CN112280989A (en) | 2020-10-30 | 2020-10-30 | Method for preparing steel ingot of tool and die steel through double-electrode electroslag remelting and electroslag remelting device |
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| CN104674021A (en) * | 2015-03-20 | 2015-06-03 | 江苏海事职业技术学院 | Bottom water tank for irregular casting device |
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| CN204570007U (en) * | 2015-05-12 | 2015-08-19 | 重庆钢铁(集团)有限责任公司 | A kind of end tank box structure for electroslag remelting furnace |
| CN110640120A (en) * | 2019-10-30 | 2020-01-03 | 上海电气上重铸锻有限公司 | Manufacturing device and manufacturing method of stainless steel electroslag remelting steel ingot |
| CN111500870A (en) * | 2020-04-22 | 2020-08-07 | 河钢股份有限公司 | Vacuum electroslag furnace |
| CN111663049A (en) * | 2020-06-22 | 2020-09-15 | 北京钢研高纳科技股份有限公司 | Cooling device and method for improving cooling strength of bottom of electroslag remelting ingot |
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| CN104357673A (en) * | 2014-10-30 | 2015-02-18 | 重庆钢铁(集团)有限责任公司 | Method for remelting and smelting metal electro slag |
| CN204281825U (en) * | 2014-11-28 | 2015-04-22 | 合智冶金设备（上海）有限公司 | Float contact conduction gripping unit at melting station for electroslag furnace |
| CN204417564U (en) * | 2015-01-27 | 2015-06-24 | 安徽工业大学 | A kind of rotary crystallizer of esr |
| CN104674021A (en) * | 2015-03-20 | 2015-06-03 | 江苏海事职业技术学院 | Bottom water tank for irregular casting device |
| CN204570007U (en) * | 2015-05-12 | 2015-08-19 | 重庆钢铁(集团)有限责任公司 | A kind of end tank box structure for electroslag remelting furnace |
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| CN111663049A (en) * | 2020-06-22 | 2020-09-15 | 北京钢研高纳科技股份有限公司 | Cooling device and method for improving cooling strength of bottom of electroslag remelting ingot |
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