EP2440347A1 - Verfahren und vorrichtung zum umschmelzen von metall in einem elektroofen - Google Patents
Verfahren und vorrichtung zum umschmelzen von metall in einem elektroofenInfo
- Publication number
- EP2440347A1 EP2440347A1 EP10734056A EP10734056A EP2440347A1 EP 2440347 A1 EP2440347 A1 EP 2440347A1 EP 10734056 A EP10734056 A EP 10734056A EP 10734056 A EP10734056 A EP 10734056A EP 2440347 A1 EP2440347 A1 EP 2440347A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating
- block
- crucible
- foot
- cooling
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000002184 metal Substances 0.000 title claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000007711 solidification Methods 0.000 claims abstract description 10
- 230000008023 solidification Effects 0.000 claims abstract description 10
- 239000002893 slag Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 64
- 230000000750 progressive effect Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 238000012806 monitoring device Methods 0.000 claims 1
- 230000002250 progressing effect Effects 0.000 abstract 1
- 238000005496 tempering Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000009474 immediate action Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
- B22D23/06—Melting-down metal, e.g. metal particles, in the mould
- B22D23/10—Electroslag casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
- B22D27/045—Directionally solidified castings
-
- 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
Definitions
- the invention relates to a method for reflowing metal in an electric furnace, wherein the material electrodes are melted by forming a slag bath and solidifies the molten metal of the material electrodes in a crucible means as a result of cooling in block form, such that, by a progressive solidification process of a block foot forms a block growth, wherein for influencing the cooling process, a heating of the block foot takes place. Furthermore, the invention relates to a device for heating a block base during the remelting of metal in an electric furnace.
- the crucible bottom can be heated by crucible means which are used in stationary crucibles.
- crucible means which are used in stationary crucibles.
- a heat transfer medium such as water or oil used.
- the tempering of the block mass in the crucible is therefore indirectly, since first the heat transfer medium must be heated to the desired temperature via a suitable energy source and a heat transfer via the bottom plate of the crucible bottom takes place on the block base.
- the known type of heating proves to be relatively sluggish, so that in particular hardly desired temperature profiles in the temperature control of the block foot can be achieved.
- a shrinkage of the block foot in the area of the block foot surface is also to be noted so that the block foot is frequently not in direct contact with the bottom plate over the entire area of its surface.
- the bottom plate is formed for the purpose of good heat transfer from copper or a copper alloy, so that the temperature of the bottom plate is already limited by material to about 200 0 C. The result is therefore It can be assumed that, on the one hand, only low temperature gradients and, on the other hand, only a relatively small increase in the temperature of the block base are possible by means of conventional block base heating.
- the invention is therefore based on the object to propose a method and a device for Blockfußbenningung that allows both an increased temperature gradient and an increase in the maximum possible heating of the block foot.
- inventive method has the features of claim 1.
- Advantageous embodiments are the subject of the dependent claims.
- the invention makes it possible to limit the minimum surface temperature in the area of the block foot or of a negative temperature gradient in order to counteract undesired crack formation in the block surface during cooling.
- the invention can be equally advantageously used in stationary and sliding block or block exhaust systems, especially when an immediate action on an end face of the block foot takes place.
- a particularly advantageous variant of the method according to the invention is to pressurize the block base for heating by means of a burner device which uses gas or oil, for example, as an energy carrier.
- a burner device which uses gas or oil, for example, as an energy carrier.
- the particular advantage of such a burner device is that, on the one hand, the burner temperature is very accurately adjustable and the other temperature changes the burner temperature in no time by simply controlling the supply of the energy carrier or by a distance control to control the distance of the burner device relative to the block foot quickly feasible are.
- the block base is subjected to electrical energy
- a corresponding heating device can be embodied in a very compact manner and thus can be easily integrated into the crucible bottom, if required.
- an inductively heatable contact plate can be used, which is brought against the end face of the block foot to the plant.
- the heating of the block base takes place in such a way that a defined temperature distribution is established via the block foot cross section, so that, for example, in the outer edge regions of the block foot, which cool more strongly than inner regions of the block foot, a higher or lower temperature is applied as required can.
- the block base when the block base is acted on by means of a burner device, it may prove advantageous if the heating of the block base takes place in a reducing atmosphere in order to reduce, for example, carburizing, scaling or nitriding of block foot edge regions.
- an initially closed crucible bottom can be opened to form the recess, in order subsequently to be able to control the cooling by the direct heating of the end face.
- the device according to the invention the
- the crucible has a jacket wall and a crucible bottom which is provided with a recess for direct heating by means of a heating device such that the heating energy generated by the heating device is introduced directly into the material of the block foot.
- the heating device can be designed as a burner device or contact device for introducing current into the block base.
- the heating device is also possible to design the heating device as a radiator device in order to enable a non-contact entry of heat into the block base.
- a waste heat stream can be used to implement the heating device, for example, or elsewhere in the process of electro-slag remelting or independently of which is released in the field of plant engineering of a steel plant.
- the heating device is formed independently of the crucible bottom.
- the effectiveness of the heating device can be further increased by being arranged in a heating chamber adjoining the crucible bottom, which, in particular in the case where the heating chamber is designed as a process chamber, adjusts a defined process atmosphere within the heating chamber, thus for example the setting of a reducing atmosphere, allows.
- Blockfußisol ist is provided, the device according to the invention can be used particularly advantageous in connection with a sliding block system, in principle due to the partially large distance of the block foot of the slag bath a relative stronger and faster cooling of the block foot takes place than with a standard crucible.
- FIG. 1 shows a crucible device for a level crucible installation with an exchanging device arranged on a crucible bottom in an isometric view during the cooling phase
- FIG. 2 shows the crucible device illustrated in FIG. 1 during the heating phase
- FIG. 3 the crucible device shown in Fig. 2 in longitudinal section.
- FIG. 1 shows a crucible device 10, as used in an electric furnace in the electroslag remelting process (not shown in more detail here, designed as a stationary crucible).
- the crucible device 10 has, as shown particularly in FIG. 3, a cup-shaped crucible vessel 11 with a jacket wall 12 and a crucible bottom 13.
- the jacket wall 12 is double-walled with a vessel inner wall 14 and a vessel outer wall 15, between which a jacket chamber 16 is formed, which serves for receiving a tempering, such as water or oil.
- the crucible bottom 13 has a bottom plate 17, which is provided in its center with a recess 18. Below the bottom plate 17 and in the heating configuration shown in Fig. 3 in concentric alignment with a central longitudinal axis 19 of the crucible vessel 1 1 is located a heating device 20 with a arranged on a removable support 21 of a changing device 35 burner head 22 formed as a burner device heating device 20th
- the heating device 20 is located in the heating configuration shown in Fig. 3 within a heating chamber 23, which is formed in the present case as a substructure of the crucible vessel 1 1.
- the removable carrier 21 is formed as a arranged on a rail assembly 24 chassis and along the rail assembly 24 from a cooling position shown in Fig. 1 in the heating position shown in Fig. 3 movable, in which the burner head 22 so below the recess 18 is arranged that, as indicated by the arrows in Fig. 3, a direct loading of a in Fig. 3 only indicated block foot 26 and an end face 27 of the block foot 26 can be done with fuel gas 25.
- the heating chamber 23 can be provided with door devices, so that a process atmosphere independent of the environment can be generated within the heating chamber 23.
- FIG. 2 shows a bottom closure plate 29 arranged in the recess 18 of the bottom plate 17 on the exchangeable support 21 during the cooling phase shown in FIG. 1 in exchange with the heating device 20, which is arranged outside the crucible 10 during the heating phase.
- the bottom closure plate 29 which is preferably provided with a cooling device to promote cooling during the cooling phase, is replaced by means of the bottom closure plate 29
- Carrier 21 arranged Hubmechanismusses 30 inserted into the recess 18 (Fig. 3).
- the crucible bottom 13 is provided with a cooling device 31 such that the bottom plate 17 together with a substantially borrowed congruent wall plate 32 defines an annular cooling or tempering 33 around the recess 18 around. If necessary, the cooling device 31 allows an even greater concentration of the heat input onto the central region of the block base 26.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Furnace Details (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI201031100T SI2440347T1 (sl) | 2009-06-12 | 2010-06-11 | Postopek in naprava za pretaljevanje kovine v električni peči |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009025176 | 2009-06-12 | ||
PCT/EP2010/058249 WO2010142791A1 (de) | 2009-06-12 | 2010-06-11 | Verfahren und vorrichtung zum umschmelzen von metall in einem elektroofen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2440347A1 true EP2440347A1 (de) | 2012-04-18 |
EP2440347B1 EP2440347B1 (de) | 2015-10-14 |
Family
ID=42556645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10734056.4A Active EP2440347B1 (de) | 2009-06-12 | 2010-06-11 | Verfahren und vorrichtung zum umschmelzen von metall in einem elektroofen |
Country Status (7)
Country | Link |
---|---|
US (1) | US8662142B2 (de) |
EP (1) | EP2440347B1 (de) |
JP (1) | JP5579261B2 (de) |
KR (1) | KR101641348B1 (de) |
CN (1) | CN102802841B (de) |
SI (1) | SI2440347T1 (de) |
WO (1) | WO2010142791A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103600059A (zh) * | 2013-12-01 | 2014-02-26 | 沈阳工业大学 | 液淬保温炉 |
CN111826530B (zh) * | 2020-06-22 | 2022-04-26 | 北京钢研高纳科技股份有限公司 | 电渣重熔设备 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2138595C3 (de) * | 1971-08-02 | 1974-05-09 | Ernst Reinhardt Gmbh, 7730 Villingen | Rotationsgießanlage |
US4202401A (en) * | 1978-02-22 | 1980-05-13 | Antonov Vladimir I | Apparatus for electroslag casting of heavy ingots |
JPS6057418B2 (ja) * | 1978-11-07 | 1985-12-14 | 三菱重工業株式会社 | 一方向凝固材の製造方法およびその装置 |
WO1986006415A1 (en) * | 1985-04-26 | 1986-11-06 | Vsesojuzny Nauchno-Issledovatelsky, Proektno-Konst | Method and device for making hollow blanks by electroslag remelting |
JPH02284761A (ja) * | 1989-04-21 | 1990-11-22 | George Muri | 鋳造システム並びに鋳造装置及びトレー |
CN2190551Y (zh) * | 1993-10-06 | 1995-03-01 | 张基 | 一种双臂滚塑装置 |
JPH07188795A (ja) * | 1993-11-16 | 1995-07-25 | Daido Steel Co Ltd | エレクトロスラグ溶解方法 |
JPH0929420A (ja) * | 1995-07-20 | 1997-02-04 | Kobe Steel Ltd | エレクトロスラグ再溶解法による鋼塊の製造方法 |
WO1998015667A1 (en) * | 1996-10-08 | 1998-04-16 | General Electric Company | Reduction-melting process to form rare earth-transition metal alloys and the alloys |
CN101112791B (zh) * | 2006-07-26 | 2010-05-26 | 鸿富锦精密工业(深圳)有限公司 | 热熔接装置 |
-
2010
- 2010-06-11 US US13/375,422 patent/US8662142B2/en active Active
- 2010-06-11 JP JP2012514484A patent/JP5579261B2/ja active Active
- 2010-06-11 WO PCT/EP2010/058249 patent/WO2010142791A1/de active Application Filing
- 2010-06-11 EP EP10734056.4A patent/EP2440347B1/de active Active
- 2010-06-11 SI SI201031100T patent/SI2440347T1/sl unknown
- 2010-06-11 KR KR1020117030195A patent/KR101641348B1/ko active IP Right Grant
- 2010-06-11 CN CN201080026022.5A patent/CN102802841B/zh active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2010142791A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR101641348B1 (ko) | 2016-07-20 |
WO2010142791A1 (de) | 2010-12-16 |
EP2440347B1 (de) | 2015-10-14 |
CN102802841A (zh) | 2012-11-28 |
US8662142B2 (en) | 2014-03-04 |
JP2012529369A (ja) | 2012-11-22 |
CN102802841B (zh) | 2015-05-20 |
JP5579261B2 (ja) | 2014-08-27 |
US20120132385A1 (en) | 2012-05-31 |
KR20120037405A (ko) | 2012-04-19 |
SI2440347T1 (sl) | 2016-02-29 |
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