CN202824559U - Electromagnetic stirring water cooled steel ingot casting mold - Google Patents

Electromagnetic stirring water cooled steel ingot casting mold Download PDF

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Publication number
CN202824559U
CN202824559U CN 201220500425 CN201220500425U CN202824559U CN 202824559 U CN202824559 U CN 202824559U CN 201220500425 CN201220500425 CN 201220500425 CN 201220500425 U CN201220500425 U CN 201220500425U CN 202824559 U CN202824559 U CN 202824559U
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China
Prior art keywords
die
steel
mold
electromagnetic
water
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Withdrawn - After Issue
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CN 201220500425
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Chinese (zh)
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孙利民
孙柏良
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孙柏良
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Application filed by 孙柏良 filed Critical 孙柏良
Priority to CN 201220500425 priority patent/CN202824559U/en
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Publication of CN202824559U publication Critical patent/CN202824559U/en
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Abstract

The utility model belongs to iron and steel smelting, and provides an electromagnetic stirring water cooled steel ingot casting mold which comprises a chassis, an auxiliary disk, a mold body and a heat preservation cap. The auxiliary disk is mounted on the chassis, the mold body is located on the auxiliary disk, and the heat preservation cap is inwards embedded and connected to an upper mouth of the mold body in an inserted mode. The inner wall of the mold body is in a cylindric structure, and the diameter of the top of the structure is less than that of the lower portion of the structure. A cooling water clamping sleeve is arranged on the periphery of the mold body, the interval of a cavity of the clamping sleeve gradually becomes large from bottom to top, and an outlet a and an inlet b are arranged at two ends of the cooling water clamping sleeve. An electromagnetic stirrer is arranged on the periphery of the mold body. Through the using of the electromagnetic stirring water cooled steel ingot casting mold, in the casting and crystallization process of liquid steel, the electromagnetic stirrer is started, dynamic liquid steel is crystallized to solid. Compared with the prior art, steel ingot isometric crystal rate is further improved, a method that stirring intensity and fine adjustment stirring are appropriately set according to different types of steel is used, so an ideal isometric crystal rate can be achieved. End product components of the mold are uniform, and crystalline grain is refined, so steel ingot quality is greatly improved, and steel ingots which are casted by using equipment and processed by vacuum distillation (VD) can be comparable to electroslag remelting steel ingots.

Description

Electromagnetic agitation water-cooled ingot steel casting mould
Technical field
The utility model belongs to smelting iron and steel, particularly a kind of electromagnetic agitation water-cooled ingot steel casting mould.
Background technology
Application number is that 2012202592024 novel steel ingot water-cooled is watered injection molding, the state of ingot crystal is " stationary crystallization ", though increase because cooling velocity makes equiaxial crystal ratio soon, quality can't be compared with electroslag remelting steel ingot, particularly the large-scale ingot blank of forging industry urgent need is all the more so.
Summary of the invention
For the problems referred to above, the utility model provides a kind of electromagnetic agitation water-cooled ingot steel casting mould, allow steel ingot crystallization under the state of " motion ", overcome and make molten steel defectives such as deviation, loose, coarse grains in crystallization process, the inherent quality of steel ingot is significantly improved.
Electromagnetic agitation water-cooled ingot steel casting mould of the present utility model is made of chassis, attached dish, die body and hot top, and attached dish is installed on the chassis, the die body seat is on attached dish, the suitable for reading embedded grafting hot top of die body is filled with filler sand in the annular space suitable for reading of hot top, and the hot top heat-insulating shield is provided with reinforced hole.The inwall of described die body is the cylinder-like structure that top diameter is slightly less than lower diameter, and its ring is provided with cooling water jecket in week, and the gap of the cavity of this chuck is gradually large from the bottom to top, and the two ends of cooling water jecket are provided with gateway a, the b of cooling water; Ring week at die body is provided with magnetic stirrer.
As further improvement of the utility model, the die body inwall is that identical material is made, and the thickness of the inwall that contacts with molten steel of die body is lower Bao Shanghou and increases gradually.
As further improvement of the utility model, the die body inwall is to be welded by the different material of several thermal conductivities, and the metal material thermal conductivity of the inner inwall that contacts with molten steel of die body diminishes from the bottom to top, wall thickness is lower Bao Shanghou and gradually increase.
As further improvement of the utility model, the die body periphery arranges a magnetic stirrer at least.
As further improvement of the utility model, magnetic stirrer is made of electromagnetic inductor, water-cooling system and variable-frequency power sources.
As further improvement of the utility model, magnetic stirrer has an electromagnetic inductor at least.
As further improvement of the utility model, be fixed with supporting plate at die body, be provided with electromagnetic inductor at supporting plate, fixed by fixed head between each electromagnetic inductor.
As further improvement of the utility model, die body is fixed on the attached dish by clamp.
Magnetic stirrer is structurally to be transformed a little by conticaster MEMS to form, because the utility model die body outer wall itself is exactly cooling wall, again because of the major function of magnetic stirrer of the present utility model not in " stirring ", and mainly be to want molten steel " motion " in water cooled mo(u)ld, magnetic stirrer is little with the MEMS phase specific power that is positioned on the conticaster, the heat that inductor produces is suitable with the motor of running, what the water cooled mo(u)ld cast will be good than environment on conticaster in addition is many, so magnetic stirrer need not cold by force, " self cooling " is just passable.
MEMS is different in variable-frequency power sources in the utility model in the magnetic stirrer and the conticaster, the frequency variation scope of variable-frequency power sources (setting of operating frequency excursion) should be considered the material of cooling jacket inwall (inwall that water cooled mo(u)ld contacts with molten steel), such as red copper 3-15Hz, ingot iron or mild steel 30-50Hz.
Use this device, in the cast and crystallization process of molten steel, start magnetic stirrer, molten steel " dynamically " crystallizes into solid.Further improve than steel ingot equiaxial crystal ratio with former technology, suitably set stirring intensity and fine setting stirring means according to different steel grades, can reach desirable equiaxial crystal ratio; Its finished product uniform ingredients, thus grain refinement significantly improves ingot quality, can match in excellence or beauty with electroslag remelting steel ingot through the steel ingot that VD processes with this equipment cast.
Description of drawings
Fig. 1, Fig. 2, Fig. 3 are the structural representations of the different embodiment of electromagnetic agitation water-cooled ingot steel casting mould of the present utility model.
The specific embodiment
Electromagnetic agitation water-cooled ingot steel casting mould of the present utility model is made of attached dish 1, die body 2 and hot top 3, and die body 2 is fixed on the attached dish 1 by clamp 7, and attached dish 1 is installed on the chassis 8.On attached dish, only be provided with the one-level die body, the suitable for reading embedded grafting hot top 3 of die body 2, the inwall of described die body 2 is cylinder-like structures that top diameter is slightly less than lower diameter, its ring is provided with cooling water jecket 4 week, the gap of the cavity of this chuck is gradually large from the bottom to top, and the two ends of cooling water jecket 4 are provided with gateway a, the b of cooling water.Ring week at die body 2 is glued with magnetic stirrer 9, and magnetic stirrer 9 can be as required, at die body 2 peripheral hardwares more than one.Described magnetic stirrer 9 is made of electromagnetic inductor 10, water-cooling system and variable-frequency power sources.Magnetic stirrer 9 has an electromagnetic inductor 10 at least.
If magnetic stirrer is that more than one electromagnetic inductor 10 is arranged, then be fixed with supporting plate 11 at die body 2, be provided with electromagnetic inductor 10 at supporting plate 11,10 of each electromagnetic inductors are fixing by fixed head 12.
The matched in clearance suitable for reading of the cylinder of die body 2 is inserted hot top 3, is filled with filler sand in the annular space suitable for reading 5 of hot top 3, and hot top 3 heat-insulating shields are provided with reinforced hole 6.Hot top 3 is installed in the water cooled mo(u)ld upper end of this device, and it is inner lining structure, and heat-insulating shield cooperates with die body tubular inwall, and its ring that is fixed is fixing with filler sand and die body upper end, and the sand block plate is welded in the die body upper surface.This water cooling mould is provided with hot top, and the temperature drop of hot top is the slowest, has realized last " feeding ".
Die body 2 inwalls are that identical material is made, and make such as fine copper or ingot iron or mild steel etc., and the thickness of the inwall that contacts with molten steel of die body 2 are lower Bao Shanghou and increase gradually.
Die body 2 inwalls are to be welded by the different material of several thermal conductivities, such as fine copper, ingot iron and mild steel, and the metal material thermal conductivity of the die body 2 inner inwalls that contact with molten steel diminishes (namely being welded by fine copper, ingot iron, mild steel successively from bottom to up) from the bottom to top, wall thickness is lower Bao Shanghou and gradually increase.
The below illustrates the structure of electromagnetic agitation water-cooled ingot steel casting mould of the present utility model as the case may be:
Embodiment 1
As shown in Figure 1, with 2 upper and lower peripheries that are installed in successively the water cooled mo(u)ld die body of magnetic stirrer, the magnetic stirrer 9(1 of the die body first half), it adopts rotating excitation field, molten steel is produced in die body rotatablely move; The Lower Half magnetic stirrer 9(2 of die body), adopt travelling-magnetic-field that molten steel is produced in die body and move up and down, and the Lower Half magnetic stirrer 9(2 of die body) be to be consisted of by two electromagnetic inductors, such structure is convenient to maintenance.
This device can be set stirring intensity and adjust stirring means according to different steel grades, to reach desirable effect.
Embodiment 2
As shown in Figure 2, steel ingot below 10 tons is with a magnetic stirrer, be arranged on the middle and lower part of die body, this magnetic stirrer is to be made of two electromagnetic inductors, form rotating excitation field, because lacking (30-50 minute), the casting complete time gets final product whole crystallizations, if the inwall that contacts with molten steel is the then frequency range of variable-frequency power sources employing 3-15HZ of red copper material.If ingot iron or mild steel; variable-frequency power sources adopts 30-60HZ(frequency capable of regulating, changes stirring intensity) circumferentially maximum line velocity be controlled at 0.05-0.3m/ second; when watering to ingot body 2/3, molten steel can open magnetic stirrer; molten steel low speed stir slowly (molten steel when cast, molten steel also moving, is up moved by the center; to liquid level, move downward along die wall); rotation is stirred, and sees the motion conditions of liquid level covering slag when liquid level rises, as reveals and brightly in time fill up.The molten steel " motion " that do not condense gets up, and outwards transmission is also fast than what do not move for internal heat, diameter was crystallizable finishing less than one meter ingot blank at 30-50 minute in general, until molten steel is cut off magnetic stirrer after solidifying fully, can open clamp 7, deviate from die body from top, steel ingot is sent to annealing.
Embodiment 3
As shown in Figure 3, relatively large steel billet (more than 50 tons) can arrange 3 cover magnetic stirrers at die body, and every agitator all is made of two monomer arc electromagnetic inductors, the die body supporting plate of burn-oning, electromagnetic inductor seat top links together with the binding of bolt with inductor.Two magnetic stirrers are rotating excitation field up and down, and the centre is travelling-magnetic-field;
The die body inwall is that red copper material and ingot iron are welded, and bottom electromagnetic inductor variable-frequency power sources adopts the frequency range of 3-15HZ, and top electromagnetic inductor variable-frequency power sources adopts the frequency range of 30-60HZ, and the centre depends upon circumstances;
Can open 9(3 when molten steel waters to ingot body 2/3 ingot height degree) begin to stir, as whole casting completes 9(2 that can follow up) and 9(1) start together, after about 1 minute with 9(2) and 9(1) stop, only use 9(3) stirring;
Consider during design that opening each agitator all can affect whole ingot height degree, so answer power enough, in order to open by turns, makes inductor unlikely overheated.
Its using method of electromagnetic agitation water-cooled ingot steel casting mould of the present utility model, take Fig. 1 as example:
Electromagnetic agitation water-cooled ingot steel casting mould using method early stage (open water before) with the identical (covering slag of steel ingot water-cooled pouring procedure; place and molten steel temperature control; water pressure control etc.); when molten steel is poured into steel mould body 2/3; be arranged on the magnetic stirrer 9(2 of die body bottom) open; when watering complete ingot body; magnetic stirrer 9(1) opens; stir molten steel with relatively high power; close magnetic stirrer 9(2 after 1-2 minute); only use magnetic stirrer 9(1) to stir, this 1-2 minute early stage is Chemical Components of Liquid Steel (startup can affect whole ingot body molten steel in two agitators) evenly.Note to observe the surface temperature of the magnetic stirrer in cooling water temperature and the work during this, if temperature drift can suspend magnetic stirrer 9(1) change magnetic stirrer 9(2 into) continue to stir.As magnetic stirrer 9(1) temperature lower (approximately 5-10 minute) turn off magnetic stirrer 9(2), restart magnetic stirrer 9(1) proceed to rotate and stir, until after the whole crystallizations of molten steel finish (as magnetic stirrer 9(1) drop in temperature, restart 9(1) continue to stir, main stirring work is by 9(1) finish).Note 9(2) time of stirring will control suitably, and overlong time can make the contraction of steel ingot later stage unfavorable.That observes hot top exothermic mixture and heat preserving agent can judge whether that dynamically crystallization is complete.If hot top exothermic mixture and heat preserving agent transfixion can stop to stir, open clamp 7 and deviate from die body from top, steel ingot is removed annealing.

Claims (8)

1. electromagnetic agitation water-cooled ingot steel casting mould, by chassis (8), attached dish (1), die body (2) and hot top (3) consist of, attached dish (1) is installed on the chassis (8), die body (2) seat is on attached dish (1), the suitable for reading embedded grafting hot top (3) of die body (2), be filled with filler sand in the annular space suitable for reading (5) of hot top (3), hot top (3) heat-insulating shield is provided with reinforced hole (6), the inwall that it is characterized in that described die body (2) is the cylinder-like structure that top diameter is slightly less than lower diameter, its ring is provided with cooling water jecket (4) week, the gap of the cavity of this chuck is gradually large from the bottom to top, and the two ends of cooling water jecket (4) are provided with the gateway a of cooling water, b; Be provided with magnetic stirrer (9) in the ring week of die body (2).
2. electromagnetic agitation water-cooled ingot steel casting mould as claimed in claim 1 is characterized in that die body (2) inwall is that identical material is made, and the thickness of the inwall that contacts with molten steel of die body (2) is lower Bao Shanghou and increases gradually.
3. electromagnetic agitation water-cooled ingot steel casting mould as claimed in claim 1, it is characterized in that die body (2) inwall is to be welded by the different material of several thermal conductivities, and the metal material thermal conductivity of the inner inwall that contacts with molten steel of die body (2) diminishes from the bottom to top, wall thickness is lower Bao Shanghou and gradually increase.
4. such as claim 1 or 2 or 3 described electromagnetic agitation water-cooled ingot steel casting moulds, it is characterized in that die body (2) periphery arranges a magnetic stirrer (9) at least.
5. electromagnetic agitation water-cooled ingot steel casting mould as claimed in claim 4 is characterized in that magnetic stirrer (9) is made of electromagnetic inductor (10), water-cooling system and variable-frequency power sources.
6. electromagnetic agitation water-cooled ingot steel casting mould as claimed in claim 5 is characterized in that magnetic stirrer (9) has an electromagnetic inductor (10) at least.
7. such as claim 5 or 6 described electromagnetic agitation water-cooled ingot steel casting moulds, it is characterized in that being fixed with supporting plate (11) at die body (2), be provided with electromagnetic inductor (10) at supporting plate (11), fixing by fixed head (12) between each electromagnetic inductor (10).
8. electromagnetic agitation water-cooled ingot steel casting mould as claimed in claim 1 is characterized in that die body (2) is fixed on the attached dish (1) by clamp (7).
CN 201220500425 2012-08-04 2012-09-27 Electromagnetic stirring water cooled steel ingot casting mold Withdrawn - After Issue CN202824559U (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201220384468.1 2012-08-04
CN201220384468 2012-08-04
CN 201220500425 CN202824559U (en) 2012-08-04 2012-09-27 Electromagnetic stirring water cooled steel ingot casting mold

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102836971A (en) * 2012-08-04 2012-12-26 孙柏良 Electromagnetic stirring water-cooled mold and method for pouring steel ingot

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104226965B (en) * 2013-06-19 2016-12-28 鞍钢股份有限公司 A kind of method and device improving ingot solidification tissue equiaxed zone ratio
CN106141111A (en) * 2015-03-31 2016-11-23 天工爱和特钢有限公司 A kind of mould for producing anistree ingot
CN111590056B (en) * 2020-05-22 2022-05-10 东方电气集团东方汽轮机有限公司 Casting structure and casting method for directional solidification of high-temperature alloy

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US6927510B1 (en) * 2002-08-20 2005-08-09 Abb Inc. Cooling electromagnetic stirrers
JP4061404B2 (en) * 2003-04-09 2008-03-19 独立行政法人産業技術総合研究所 Continuous casting method and apparatus for refinement of structure by electromagnetic vibration
CN100525961C (en) * 2007-12-05 2009-08-12 中冶京诚工程技术有限公司 Macrotype metal mold system for recovering thermal energy by cooling water
CN202162351U (en) * 2011-03-26 2012-03-14 潍坊亚东冶金设备有限公司 Novel water-cooled pouring crystallizer
CN102836971B (en) * 2012-08-04 2015-04-29 孙柏良 Electromagnetic stirring water-cooled mold and method for pouring steel ingot

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102836971A (en) * 2012-08-04 2012-12-26 孙柏良 Electromagnetic stirring water-cooled mold and method for pouring steel ingot
CN102836971B (en) * 2012-08-04 2015-04-29 孙柏良 Electromagnetic stirring water-cooled mold and method for pouring steel ingot

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CN102836971A (en) 2012-12-26

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Granted publication date: 20130327

Effective date of abandoning: 20150429