CN1146939A - Method and apparatus for induction heating refractory model element - Google Patents
Method and apparatus for induction heating refractory model element Download PDFInfo
- Publication number
- CN1146939A CN1146939A CN96109933A CN96109933A CN1146939A CN 1146939 A CN1146939 A CN 1146939A CN 96109933 A CN96109933 A CN 96109933A CN 96109933 A CN96109933 A CN 96109933A CN 1146939 A CN1146939 A CN 1146939A
- Authority
- CN
- China
- Prior art keywords
- model element
- inner chamber
- induction coil
- described device
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/38—Coil arrangements specially adapted for fitting into hollow spaces of workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
- B22D41/015—Heating means with external heating, i.e. the heat source not being a part of the ladle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/60—Pouring-nozzles with heating or cooling means
Abstract
A method and an apparatus for inductively heating a refractory shaped member (1) provided with an internal space (2), particularly for a metallurgical vessel, enable as rapid, uniform heating of the shaped member (1) as possible. An inner inductor (4) is introduced into the internal space (2), the shaped member (2) is heated from the interior by such inductor, and the inductor (4) then is removed from the internal space (2).
Description
The present invention relates to a kind of method that is used for the refractory model element eddy-current heating, described model element has tubular inner chamber.The invention still further relates to the device that is used to implement said method.
This model element is the particular component of the fused solution bleeder of metallurgical tank.For fear of the fused solution cooling of therefrom flowing through, especially solidify, carry out preheating to this model element.
A kind of fire-resistant tapping hole that is used for continuous casting equipment is disclosed in the German patent DE 3842690.Induction coil surrounds the tapping passage from the outside, utilizes this coil just can be adjustably the outer wall of inboard to be carried out eddy-current heating.Coil is the part of tapping hole member.Particularly importantly this fire-resistant tapping hole model element is a wear-out part, so this tapping hole is very expensive.
Usually, fire-resistant tapping hole model element, especially the immersion tapping hole heats with burning gases.This just produces following defective, and the carbon that promptly belongs to the model element material component is by after-flame.In addition disadvantage is to cause forming in model element when heating uneven Temperature Distribution like this.For example form the temperature difference of about 400K.Need very long heat time heating time in addition.
The objective of the invention is to, realize the rapid and uniform heating of fire-resistant module.
According to the present invention, the method that is begun described type by this paper realizes above-mentioned purpose, and an internal induction body promptly is set in inner chamber, utilizes this inductor that model element is heated, and then this inductor is taken out from inner chamber.
Utilize the present invention to realize a kind of rapid and uniform heating to refractory model element, this model element for example is the pipe that a kind of immersion tapping hole or tube-in-tube go out port system (Rohr-in-Rohi-Auslasssystem), utilizes this model element to make the outflow of fused solution for that be interrupted and/or controllable.
Utilize the present invention can improve utilization rate of equipment and installations, because overcome freezing problem.For model element is remained on the preference temperature, the heating when this method and apparatus is not only applicable to after-teeming, and be applicable to heating when being interrupted casting.
The salient point that is used to implement the device of said method is, the internal induction body by a cooling, its main body is that spiral induction coil constitutes.
Description to an embodiment draws the advantage of structure of the present invention by dependent claims with below reaching.
Accompanying drawing is represented an immersion tapping hole that is used for internal induction body metallurgical tank, that have insertion.
Refractory model element 1 is that a kind of its is shaped as known immersion tapping hole (soaking cast tube), and this model element is made by the carbon containing class material of pottery, and this part inductively is coupled with an electric alternating field and causes heating.The immersion tapping hole comprises a tubular cylindric inner chamber 2, has a metal shell 3 in its external partial zone.Metal shell 3 is an immersion tapping hole shield electromagnetic, thus make this tapping hole not owing to external coil produce the heating irregular.
In state shown in the drawings, in tubular cylindric inner chamber 2, insert an internal induction body 4.This inductor by a cooling, its main body is that spiral induction coil 5 constitutes, this coil links to each other with a generator 6.The size of induction coil 5, especially length and inner chamber 2 so mate, even it extends on the whole length of inner chamber 2 as much as possible.In addition, its diameter also with the diameter of inner chamber 2 coupling.
With coating 13, for example a ceramic glaze makes inner chamber 2 relative induction coils, 5 electricity and/or heat insulation, and the immersion tapping hole just can not contact with the parts of conduction voltage and/or can not form hot-spot like this.
In another kind of structure of the present invention, utilize pipeline section 7 to make the surface electrical and/or the heat insulation of induction coil 5 and inner chamber 2.
It also is favourable making induction coil 5 adapt to different geometry or wall thickness like this, promptly at induction coil 5 with want between the surface of area heated various gaps are arranged.Utilize this measure, form different energy densities in model element 1, this will improve at the asynchronous heating uniformity of wall thickness.Correspondingly set up pipeline section 7.
Pipeline section 7 also is used for induction coil 5 inner chamber 2 centerings.Pipeline section 7 is shifted onto on the induction coil 5 with suitable frictional force, thereby it can be changed in the case of necessary.Pipeline section 7 mates like this with the internal diameter of inner chamber 2, even it can be pushed in the inner chamber 2 and therefrom taking-up with induction coil 5 at an easy rate.This structure also can be such, promptly at first pipeline section 7 is pushed in the inner chamber 2, and then induction coil 5 is inserted in the pipeline section 7.
The upside of pipeline section 7 has a flange 8 that is used to limit insertion.In the present embodiment, the lower end of pipeline section 7 is by the ends 9 sealing.
For the top area 10 with the expansion of immersion tapping hole also heats, on flange 8, induction coil 5 has an additional turns 11.
Pipeline section 7 is made by height heat-resisting ceramic fibre or foamed material.
It is unimportant whether pipeline section 7 extends on the total length of induction coil 5, also can adopt the form of segmentation that two or more pipeline sections are set on the total length of induction coil 5.
One or more pipeline sections 7 must not take out from inner chamber 2.One or more pipeline sections 7 can be arranged to the lining of inner chamber 2, this layer is fused by fused solution when using first then.
For fear of the immersion tapping hole when heating to external radiation, promptly lost heat can also be provided with external insulation layer 12 for it, this layer preferably is made of ceramic fibre material or ceramic foam.Can improve heating rapidly and uniformly like this to the immersion tapping hole.
If heat the immersion tapping hole, then insert in inner chamber 2 with its pipeline section 7 internal induction body 4 and connect generator 6.Basically on the whole length of immersion tapping hole, it is carried out eddy-current heating rapidly and uniformly therefrom.After meeting the requirements of temperature, just internal induction body 4 is taken out from the immersion tapping hole.So far, this immersion tapping hole has been that the foundry work preheating is good.Internal induction body 4 is used for a plurality of heating stepses of many immersion tapping holes.The possibility of its installation does not also rely on the wearing and tearing of immersion tapping hole.When pipeline section 7 wearing and tearing, induction coil 5 is therefrom extracted out, reinstall a new pipeline section.When the immersion tapping hole has different inner diameters, can prepare pipeline section 7 with various outer diameter correspondingly.Also just can be with the coaxial respectively insertion centrally of the induction coil 5 of different inner diameters.
Claims (15)
1. the device that is used for the refractory model element eddy-current heating, this model element has tubular inner chamber, it is characterized in that, inserts an internal induction body (4) in inner chamber (2), utilizes this inductor to model element (1) heating, and internal induction body (4) takes out from inner chamber (2) then.
2. device as claimed in claim 1 is characterized in that, model element (1) is fire-resistant immersion cast tube.
3. be used to the device implementing to install as claimed in claim 1 or 2, it is characterized in that, internal induction body (4) by cooling, main body is that spiral induction coil (5) constitutes.
4. device as claimed in claim 3 is characterized in that, the size coupling of the inner chamber (2) of the size of induction coil (5) and refractory model element (1).
5. as claim 3 or 4 described devices, it is characterized in that, between induction coil (5) and inner chamber (2), be provided with one deck electricity and/or thermal insulation layer (13).
6. as the described device of one of claim 3 to 5, it is characterized in that induction coil (5) becomes can transmit the amount of different-energy apart from the distance adjustment on the need heating region surface of refractory model element (1).
7. as the described device of one of claim 3 to 6, it is characterized in that induction coil (5) is centering in the inner chamber (2) of model element (1).
8 devices as claimed in claim 7 is characterized in that, for centering induction coil (5) is surrounded by a pipeline section (7) at least, this pipeline section centrally aligns with induction coil (5) in the inner chamber (2) of model element (1).
9. as the described device of one of claim 7 to 8, it is characterized in that one or more pipeline sections (7) can be pulled on induction coil (5).
10. as the described device of one of claim 7 to 9, it is characterized in that the one or more pipeline sections (7) on the induction coil (5) can be replaced.
11., it is characterized in that one or more pipeline sections (7) are made by a kind of electricity and/or heat-insulating material as the described device of one of claim 7 to 10.
12., it is characterized in that one or more pipeline sections (7) are made by height heat-resisting ceramic fibre material or ceramic foam material as the described device of one of claim 7 to 11.
13. as the described device of one of claim 7 to 12, it is characterized in that, in the inner chamber (2) of model element (1), as the part lining one or more pipeline sections (7) be set at least.
14. device as claimed in claim 13 is characterized in that, lining fuses in the inner chamber (2) of model element (1) after the heating.
15., it is characterized in that model element (1) comprises one deck external insulation layer (12) as the described device of one of claim 3 to 14, this insulating barrier preferably is made of ceramic fibre material or ceramic foam material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19526970A DE19526970C2 (en) | 1995-07-25 | 1995-07-25 | Process for induction heating of a refractory molded part |
| DE19526970.5 | 1995-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1146939A true CN1146939A (en) | 1997-04-09 |
Family
ID=7767630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96109933A Pending CN1146939A (en) | 1995-07-25 | 1996-07-22 | Method and apparatus for induction heating refractory model element |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0755741B1 (en) |
| JP (1) | JPH09122901A (en) |
| KR (1) | KR970005459A (en) |
| CN (1) | CN1146939A (en) |
| AT (1) | ATE209075T1 (en) |
| AU (1) | AU724697B2 (en) |
| DE (2) | DE19526970C2 (en) |
| ZA (1) | ZA966008B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077598A (en) * | 2016-04-26 | 2016-11-09 | 重庆大学 | A kind of bath temperature adjusting means of aluminium alloy melt insulated pouring room |
| CN107520437A (en) * | 2016-06-21 | 2017-12-29 | 宝山钢铁股份有限公司 | A kind of temperature compensation means and its method of ladle long nozzle low overheat |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19900915A1 (en) * | 1999-01-13 | 2000-07-20 | Schloemann Siemag Ag | Method and device for setting and / or maintaining the temperature of a melt, preferably a steel melt during continuous casting |
| KR100681115B1 (en) * | 1999-11-24 | 2007-02-08 | 주식회사 케이티 | Method for improvement graphic processing in communication system |
| DE10035097A1 (en) * | 2000-07-17 | 2002-02-07 | Didier Werke Ag | Immersion heating element used for changing, maintaining and/or comparing the bath temperature of a molten metal comprises an inner inductor arranged in a refractory casing having a flat cross-section and closed on its base |
| DE10204305B4 (en) | 2002-02-01 | 2004-04-29 | Heraeus Electro-Nite International N.V. | Refractory spout for a metallurgical vessel |
| JP4660343B2 (en) * | 2004-11-24 | 2011-03-30 | 新日本製鐵株式会社 | Nozzle heating device for molten metal injection |
| JP4482549B2 (en) * | 2006-11-28 | 2010-06-16 | 新日本製鐵株式会社 | Induction heating device |
| KR101412539B1 (en) * | 2012-05-31 | 2014-07-01 | 현대제철 주식회사 | Device for preheating mold |
| JP7222262B2 (en) * | 2019-02-13 | 2023-02-15 | 日本製鉄株式会社 | Protective Refractory for Induction Heating Coil and Electromagnetic Induction Heating Method |
| JP7234768B2 (en) * | 2019-04-16 | 2023-03-08 | 日本製鉄株式会社 | Preheating method of immersion nozzle |
| JP2020179412A (en) * | 2019-04-25 | 2020-11-05 | 日本製鉄株式会社 | Induction heater for immersion nozzle and method of pre-heating immersion nozzle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1607264A (en) * | 1922-02-02 | 1926-11-16 | Budd Wheel Co | Method of and means for heating disks or plates electrically |
| US2227866A (en) * | 1938-06-29 | 1941-01-07 | Howard E Somes | Protected and insulated heat treatment coil |
| US2806117A (en) * | 1953-12-07 | 1957-09-10 | Westinghouse Electric Corp | Inductor apparatus |
| DE3842690C2 (en) * | 1988-12-19 | 1998-04-30 | Didier Werke Ag | Refractory connection and induction coil therefor |
| DE4038061A1 (en) * | 1990-11-29 | 1992-06-04 | Didier Werke Ag | METHOD FOR PRODUCING CERAMIC SHAPED AND / OR PROFILE BODIES |
| US5523546A (en) * | 1995-05-09 | 1996-06-04 | Mannings, U.S.A., Inc. | Apparatus and method of inductively heating a workpiece with a slender bone |
-
1995
- 1995-07-25 DE DE19526970A patent/DE19526970C2/en not_active Expired - Fee Related
-
1996
- 1996-07-05 EP EP96110900A patent/EP0755741B1/en not_active Expired - Lifetime
- 1996-07-05 AT AT96110900T patent/ATE209075T1/en not_active IP Right Cessation
- 1996-07-05 DE DE59608239T patent/DE59608239D1/en not_active Expired - Fee Related
- 1996-07-09 JP JP8211824A patent/JPH09122901A/en active Pending
- 1996-07-15 ZA ZA966008A patent/ZA966008B/en unknown
- 1996-07-15 KR KR1019960028515A patent/KR970005459A/en not_active Application Discontinuation
- 1996-07-22 CN CN96109933A patent/CN1146939A/en active Pending
- 1996-07-23 AU AU60649/96A patent/AU724697B2/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077598A (en) * | 2016-04-26 | 2016-11-09 | 重庆大学 | A kind of bath temperature adjusting means of aluminium alloy melt insulated pouring room |
| CN107520437A (en) * | 2016-06-21 | 2017-12-29 | 宝山钢铁股份有限公司 | A kind of temperature compensation means and its method of ladle long nozzle low overheat |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09122901A (en) | 1997-05-13 |
| AU6064996A (en) | 1997-01-30 |
| KR970005459A (en) | 1997-02-19 |
| DE19526970A1 (en) | 1997-01-30 |
| EP0755741B1 (en) | 2001-11-21 |
| DE59608239D1 (en) | 2002-01-03 |
| AU724697B2 (en) | 2000-09-28 |
| DE19526970C2 (en) | 2000-11-16 |
| EP0755741A1 (en) | 1997-01-29 |
| ZA966008B (en) | 1997-01-31 |
| ATE209075T1 (en) | 2001-12-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |