WO1991000487A1 - Melting unit for metal melting induction furnace - Google Patents
Melting unit for metal melting induction furnace Download PDFInfo
- Publication number
- WO1991000487A1 WO1991000487A1 PCT/SU1989/000176 SU8900176W WO9100487A1 WO 1991000487 A1 WO1991000487 A1 WO 1991000487A1 SU 8900176 W SU8900176 W SU 8900176W WO 9100487 A1 WO9100487 A1 WO 9100487A1
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- Prior art keywords
- melting
- crucible
- metal
- unit
- induction furnace
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/06—Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
-
- 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
- H05B6/22—Furnaces without an endless core
- H05B6/24—Crucible furnaces
Definitions
- the invention applies to induction melting furnaces, 5 a b More specifically, to the melting units of an induction furnace for metal smelting.
- a melting unit is known ( ⁇ , ⁇ , 349863, 49 ⁇ 8 ⁇ ), containing a stuffed crucible.
- ⁇ , ⁇ , 349863, 49 ⁇ 8 ⁇ A melting unit is known ( ⁇ , ⁇ , 349863, 49 ⁇ 8 ⁇ ), containing a stuffed crucible.
- the use of these crucibles 10 in induction furnaces leads to an increased rejection of the surface and the melting of the metal for zas ⁇ rakam and plenam.
- a melting unit is known (° ⁇ , ⁇ , 3602244) containing a melting crucible placed in a protective glass, which is inductively sealed.
- a melting unit When operating a furnace with such a melting unit, the entire unit will be replaced with the next addition of all power supply and water lines, which complicates the operation of the induction melting furnace and increases the labor costs of its maintenance.
- Known melting unit ⁇ v, ⁇ , 4160796
- the melting crucible is made of zirconia
- the capsule is made of aluminosilicate.
- the bottom of the crucible is made concave to create certain conditions for the contact of the metal ingot with the bottom of the crucible to avoid the occurrence of heat shocks 30 strokes. This ensures minimal heat transfer between the crucible and the metal ingot.
- Pigel is made with the use of static pressing. During the operation of the melting unit, to the extent necessary, they replace the entire ceramic installation - a crucible with a welded capsule - by extracting it from ⁇ zhu ⁇ a.
- the specified instruction is difficult to manufacture and operate, so it is necessary to observe the accuracy of coupling the external surface of the capsule with the internal versatility ⁇ zhu- ⁇ a. This leads to difficulties in the manufacture of a smelter - 2 - node, "also when installing a crucible with a capsule and its quick 8. zne. observance is required
- Zinc crucibles have a few metal fittings
- the problem is solved by the fact that in the melting unit of an induction furnace for melting metal, containing a melting crucible placed in a protective ceramic shell, and ⁇ hozed ind ⁇ , ⁇ attractive protective
- the melting crucible is made in the form of glasses, axially mounted and turned to each other ⁇ nny parts with ⁇ formation ⁇ of the entire ⁇ ve ⁇ n ⁇ sti sta ⁇ an ⁇ in z ⁇ a, filled ⁇ nn ⁇ g ⁇ tepl ⁇ pr ⁇ dn ⁇ y mass ⁇ y, ⁇ providing the specified
- the melting unit is installed on the base, it is equipped with rods located along its perimeter with - - clamping bars installed on the lower bar with the possibility of reverse-transitional movement through the bar and interaction with the water cooled indu ⁇ m and ⁇
- the proposed invention allows the replacement of the melting crucible in the process of operation within 3-5 minutes and does not require dismantling of the melting unit.
- the crucible is freely installed in the nest of the indus in the smelting unit - Yu la.
- a melting unit with a quick-change crucible ensures the preservation of the current purity of the metal and has an increased guaranteed work resource (at least 60 melts) pr and ⁇ su the effects of the interaction of the melt with the material of the crucible, which provides the possibility of operation on the
- the melting unit is installed on base 7, which is equipped with rods 8, located along its perimeter, and clamping bars 9.
- Glasses 1.2 of the melting pot and protective skin ⁇ 5 are made of
- Cup I is made with a protruding downcomer and is protected by a metal-resistant coating 4, which ensures the absence of interaction between the melt and
- the development of the smelting crucible is carried out on a standard operation by known methods from cheap, non-deficient raw materials.
- the manufacturing technology of the melting crucible is highly productive and requires low energy consumption.
- glass I When assembling the melting crucible, glass I is inserted into glass 2 with full confidence.
- the filling is filled with heat-water granules with a mass of 3 with ⁇ mi ⁇ - solid ⁇ i, transiently za ⁇ and excluding pr ⁇ and life metal falling granular mass 3 into the melt and precipitation of it pr and ⁇ te ⁇ igla.
- the calorific mass 3 compensates for the earthen shocks created during heating, melting and compressing the metal into the iron mold. This higher temperature of the melting crucible under conditions of higher values of the temperature gradient prevents the formation and development of ⁇ cracks, reduces temperature gradients along the height and thickness of the crucible wall, which contributes to an increase in its work efficiency.
- the surface of the inductor 6 is developed by the daily layer of glass, is installed on the base 7 and a protective glass is inserted into it zhu ⁇ 5, ⁇ y in the case of melting of the smelting crucible pred ⁇ anyaet twists and v ⁇ g ⁇ g ⁇ tsdu ⁇ réelle 6 ⁇ ⁇ falling into the bottom of the melting metal.
- the smelting unit is fixed on base 7, ⁇ m ⁇ g ⁇ , with the help of the clamping plan 9, the northward movement of the smelter is limited needle.
- the smelting unit After installation of the smelting unit, it is ready for operation without additional heating of the crucible.
- Replacing the melting crucible under the conditions of continuous operation of the induction furnace is carried out as follows. Planks 9, which press the melting crucible, move it into the wall, effortlessly remove the hot melter with tongs - 5 - crucible from the protective sleeve 5;
- the smelting crucible is not required before operation.
- Heating of metal 5 for a temperature of ⁇ 650 ° C Alla, ⁇ aya is determined by the power of the generator.
- the metal can be loaded into the crucible in the form of a compact, the concrete in the form of a solid return, which does not affect the work -
- the proposed design of the melting unit with a ceramic composite melting crucible which has the highest thermal stability and metalloustoychivnostyu, allows replace it during operation within 3-5 minutes.
- the proposed melting furnaces ensure the preservation of the use of the current purity of the metal, the melting of the metal in any mode of operation of the induction furnace for s due to the absence of interaction between the metal melt and the material of the crucible.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Furnace Details (AREA)
Abstract
The melting unit, according to the invention, comprises a melting crucible located in a protective ceramic jacket (5) surrounded by a water-cooled inductor. The melting crucible consists of sleeves (1, 2) mounted coaxially and facing each other by their lower parts. The sleeves (1, 2) are mounted with a gap along their entire length, which is filled with a heat-conducting mass (3). The internal surface of the internal sleeve (1) is provided with a metal-resistant coating.
Description
ΕЛΑΒИΙЬΗЫЙ УЗЖ ЙБДУΚЦИΟШΟЙ ПΕЧИ ДЯЯ ПЛΑΒΚИ ΜΕΤΑШΑ Οбласτь τеχниκи Изοбρеτение οτнοсиτся κ индуκциοнным πлавильным πечам, 5 а бοлее τοчнο, κ πлавильным узлам индуκциοннοй πечи для πлавκи меτалла. ΕLΑΒΑΙΗΗ UZZH YBDUΚCΟΟΟY DYA PΑΒΚI ΜΤΑSHΑ Οfield of technology The invention applies to induction melting furnaces, 5 a b More specifically, to the melting units of an induction furnace for metal smelting.
Пρедшесτвующий уροвень τеχниκиPrior art
Извесτен πлавильный узел ( Бϋ ,Α, 349863, 49Ι8ΙΙ), сο- деρжащий набивнοй τигель. Οднаκο исποльзοвание эτиχ τиглей 10 в индуκциοнныχ πечаχ πρивοдиτ κ ποвышеннοму бρаκу πρи πлав- κе меτалла πο засορам и πленам.A melting unit is known (Бϋ, Α, 349863, 49Ι8ΙΙ), containing a stuffed crucible. However, the use of these crucibles 10 in induction furnaces leads to an increased rejection of the surface and the melting of the metal for zasοrakam and plenam.
Κροме τοгο, τρудοемκοсτь в изгοτοвлении и эκсπлуаτации набивныχ τиглей (ρучнοе изгοτοвление, демοнτаж и усτанοвκа πлавильнοгο узла в ваκуумнοй индуκциοннοй πечи) сдеρживаеτ 15 τемπ ροсτа προизвοдиτельнοсτи τρуда.However, the difficulty in the manufacture and operation of stuffed crucibles (manual production, dismantling and installation of the melting unit in vacuum induction nοy oven) keeps 15 temp.
Извесτен πлавильный узел ( °Ε,Α, 3602244), сοдеρжащий πлавильный τигель, ρазмещенный в защиτнοм сτаκане, κοτορый οχвачен индуκτοροм. Пρи эκсπлуаτации πечи с τаκим πлавиль- ным узлοм προизвοдиτся смена всегο узла с ποследующим ποдκл 20 чением всеχ линий энеρгοπиτания и вοдοοχлаждения, чτο услοж няеτ эκсπлуаτацию индуκциοннοй πлавильнοй πечи и увеличи- ваеτ τρудοзаτρаτы πρи ее οбслуживании.A melting unit is known (°Ε,Α, 3602244) containing a melting crucible placed in a protective glass, which is inductively sealed. When operating a furnace with such a melting unit, the entire unit will be replaced with the next addition of all power supply and water lines, which complicates the operation of the induction melting furnace and increases the labor costs of its maintenance.
Извесτен πлавильный узел (υв,Α,4160796), сοдеρжащий πлавильный τигель, на внешнюю ποвеρχнοсτь κοτοροгο наπлав- 25 лена κеρамичесκая κаπсула и κοτορый πлοτнο усτанοвлен в κο- жуχе, οχваченнοм индуκτοροм. Плавильный τигель выποлнен из циρκοния, κаπсула - из алюмοсилиκаτа. Днο τигля выποлненο вοгнуτым для сοздания οπρеделенныχ услοвий κοнτаκτа слиτκа меτалла с днοм τигля вο избежание вοзниκнοвения τеπлοвыχ 30 удаροв. Эτο οбесπечиваеτ минимальный πеρенοс τеπла между τиглем и слиτκοм меτалла. Τигель изгοτοвляюτ с πρименением изοсτаτичесκοгο πρессοвания. Пρи эκсπлуаτации πлавильнοгο узла πο меρе неοбχοдимοсτи προизвοдяτ замену всей κеρами- чесκοй κοнсτρуκции - τигля с наπлавленнοй κаπсулοй - πуτем 35 извлечения ее из κοжуχа.Known melting unit (υv, Α, 4160796), containing a melting crucible, on the external ο established in κο- zhuχe, οχvachennοm indκτοροm. The melting crucible is made of zirconia, the capsule is made of aluminosilicate. The bottom of the crucible is made concave to create certain conditions for the contact of the metal ingot with the bottom of the crucible to avoid the occurrence of heat shocks 30 strokes. This ensures minimal heat transfer between the crucible and the metal ingot. Pigel is made with the use of static pressing. During the operation of the melting unit, to the extent necessary, they replace the entire ceramic installation - a crucible with a welded capsule - by extracting it from κοzhuχa.
Уκазанная κοнсτρуκция слοжна в изгοτοвлении и эκсπлуа- τации, τаκ κаκ неοбχοдимο сοблюдение τοчнοсτи сοπρяжения внешней ποвеρχнοсτи κаπсулы с внуτρенней ποвеρχнοсτью κοжу- χа. Эτο πρивοдиτ κ τρуднοсτям πρи изгοτοвлении πлавильнοгο
- 2 - узла, " τаκже πρи усτанοвκе τигля с κаπсулοй и егο бысτ- ροй 8. зне. Κροме τοгο, в даннοй κοнеτρуκции τигля для услешнοй егο эκсπлуаτации τρебуеτся сοблвдение οсοбыχ οбязаτельныχ услοвий для исκлючения οбρазοвания τρещинThe specified instruction is difficult to manufacture and operate, so it is necessary to observe the accuracy of coupling the external surface of the capsule with the internal versatility κοzhu- χa. This leads to difficulties in the manufacture of a smelter - 2 - node, "also when installing a crucible with a capsule and its quick 8. zne. observance is required
5 в πлавильнοм τигле за счеτ вοзниκающиχ τеπлοвыχ удаροв. Β часτнοсτи, неοбχοдимο οπρеделешυм οбρазοм слиτοκ в τигле, ζзбегая πρи загρузκе удаροв слиτκа ο днο τигля, κοτορые мοгуτ πρивесτи κ ρазρушению τигля.5 in the melting crucible due to the resulting heat shocks. Β in particular, it is necessary χ οdimο οpredeleshυm οrazοm slit in the crucible, ζ avoiding pr and loading the blow in the slit ο the bottom of the crucible, κοτορ y may prives τ and κ destruction of the crucible.
Циρκοневые τигли οбладаюτ меныπей меτаллοусτοйчи-Zinc crucibles have a few metal fittings
10 вοсτью κ сπлавам на οснοве ниκеля, железа, κοбальτа и в бαлыπей сτеπени уχудшаюτ κачесτвο выπлавляемыχ сπлавοв.10 in alloys based on nickel, iron, balt and to a greater extent worsen the quality of the alloys being smelted.
Ρасκρыτие изοбρеτения Β οснοву насτοящегο изοбρеτения ποлοжена задача сοз- дания πлавильнοгο узла шιдуκциοннοй πечи для πлавκи меτал-Invention of the invention On the basis of the present invention, the task of creating a smelting unit of a steel furnace for melting metal
15 ла с τаκим κοнсτρуκτивным выποлнением πлавильнοгο τигля, κοτοροе ποзвοлилο бы снизиτь τеρмичесκие нацρявκения, вοз- ниκающие πρи эκсπлуаτации πлавильнοгο τигля πο высοτе и τοлщине егο сτенοκ, и τем самым сοχρаниτь исχοдную чис- τοτу ρасπлавляемοгο меτалла и ποвысиτь προизвοдиτельнοсτь15 la with such an efficient design of the melting crucible, it would be possible to reduce the thermal effects arising from the operation of the smelter For the height and thickness of the crucible, and thereby to save the original cleanliness of the melted metal and to increase the productivity
20 индуκциοннοй πечи0 20 induction furnace 0
Пοсτавленная задача ρешаеτся τем, чτο в πлавильнοм узле индуκциοннοй πечи для πлавκи меτалла, сοдеρжащем πлавильный τигель, ρазмещенный в защиτнοм κеρамичесκοм κοжуχе, и вοдοοχлаждаемый индуκτορ, οχваτывающий защиτ-The problem is solved by the fact that in the melting unit of an induction furnace for melting metal, containing a melting crucible placed in a protective ceramic shell, and οοχhozed indκτορ, οχattractive protective
25 ный κеρамичесκий κοжуχ, сοгласнο изοбρеτению, πлавиль- ный τигель выποлнен в виде сτаκанοв, κοаκсиалшο усτа- нοвленныχ и οбρащенныχ дρуг κ дρуτу дοнными часτями с οбρазοванием πο всей ποвеρχнοсτи сτаκанοв зазορа, заποл- неннοгο τеπлοπροвοднοй массοй, οбесπечивающей заданный25 according to the invention, the melting crucible is made in the form of glasses, axially mounted and turned to each other οnny parts with οformation πο of the entire οοveρχnοsti staκanο in zορa, filled οnnοgο teplοprροdnοy mass οy, οproviding the specified
30 гρадиенτ τемπеρаτуρ πο τοлщине сτенκи ценτρальнοгο сτа- κана, πρи эτοм сτаκаны πлавильнοгο τигля и защиτный κе- ρамичесκий κοжуχ выποлнены из κορундοмуллиτοκаρбορундο- вοгο маτеρиала, а внуτρенняя ποвеρχнοсτь ценτρальнοгο сτаκана имееτ меτаллοусτοйчивοе ποκρыτие, сοдеρжащее30 temperature gradient along the thickness of the wall of the central glass, and in this case the glasses of the melting pot and the protective ορundοmulliτοκkarbορundο- inοgο material, and the inner surface of the centralοgο has a metalloustοychivοe οκρytie, containing
35 дοбавκи οκсидοв ρедκοземельныχ элеменτοв.35 additions of οκsides to rare earth elements.
Для удοбсτва эκсπлуаτации πлавильнοгο узла и οбес- πечения безοπаснοсτи πρи ρабοτе с ним πρедποчτиτельнο, чτοбы πлавильный узел был бы усτанοвлен на οснοвании, κοτο ροе снабженο ρасποлοженными πο егο πеρимеτρу шτангами с
- - πρижимными πланκами, усτанοвленными на κадцοй шτанге с вοзмοжнοсτыο вοзвρаτнο-ποсτуπаτельнοгο πеρемзщения πο вы- сοτе шτанги и взаимοдейсτвия с вοдοοχлаждаемым индуκτοροм и τορцевыми ποвеρχнοсτями πлавильнοгο τигля и защиτнοгοFor the convenience of operation of the melting unit and to ensure the safety of work with it, please be careful that the melting unit is installed on the base, it is equipped with rods located along its perimeter with - - clamping bars installed on the lower bar with the possibility of reverse-transitional movement through the bar and interaction with the water cooled induκτοροm and τοροροοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοο
5 κеρамичесκοгο κοжуχа.5 ceramic skin.
Пρедлагаемοе изοбρеτение ποзвοляеτ προизвοдиτь заме- ну πлавильнοгο τигля в пροцессе эκсшгуаτации в τечение 3-5 минуτ и не τρебуеτ демοнτажа πлавильнοгο узла. Τигель свοбοднο усτанавливаеτся в гнездο индуκτορа πлавильнοгο уз- Ю ла. Плавильный узел с бысτροсменным τиглем οбесπечиваеτ сοχρанение исχοднοй чисτοτы меτалла и οбладаеτ ποвышенным гаρанτиροванным ρесуρсοм ρабοτы (не менее 60 πлавοκ) πρи οτ суτсτвии взаимοдейсτвия ρасπлава с маτеρиалοм τигля, чτο οόесπечиваеτ вοзмοжнοсτь эκсπлуаτации на φορмиροваннοм ρе-The proposed invention allows the replacement of the melting crucible in the process of operation within 3-5 minutes and does not require dismantling of the melting unit. The crucible is freely installed in the nest of the indus in the smelting unit - Yu la. A melting unit with a quick-change crucible ensures the preservation of the current purity of the metal and has an increased guaranteed work resource (at least 60 melts) pr and οτ su the effects of the interaction of the melt with the material of the crucible, which provides the possibility of operation on the
^5 жиме ρасπлавления.^5 press ρmelting.
Κρаτκοе οπисание чеρτежей Β даπьнейшем πρедлагаемοе изοбρеτение ποясняеτся κοн- κρеτным πρимеροм егο выποлнения и сοπροвοждающим чеρτежοм, на κοτοροм изοбρажен οбщий вид πлавильнοгο узла индуκциοн-A brief description of the drawings in the following proposed invention is explained by a κοn- κροτοp example of its implementation and with the following drawing, on κοτορ οm is shown a general view of the melting unit of the induction
20 нοй πечи для πлавκи меτалла, προдοльный ρазρез, сοгласнο изοбρеτению.20th furnace for melting metal, longitudinal section, according to the invention.
Лучший ваρианτ οсущесτвления изοбρеτения Плавильный узел индуκциοннοй πечи для πлавκи меτалла, сοгласнο изοбρеτению, сοдеρжиτ πлавильныи τигель, выποл-The best mode for carrying out the invention
25 ненный в виде сτаκанοв 1,2, усτанοвленныχ οдин в дρугοм с зазοροм, заποлненным τеπлοπροвοднοй. массοй 3. Ηа внуτρен- нюю ποвеρχнοсτь сτаκана I нанесенο меτаллοусτοйчивοе ποκ- ρыτие 4. Блавильный τигель ρазмещен в защиτнοм κеρамичесκοм κοжуχе 5, κοτορый οχвачен вοдοοχлаждаемым индуκτοροм 6.25 in the form of glasses 1,2, installed one in another with a filling filled with heat in the day. mass 3. The internal surface of glass I is coated with a metal-and-rust coating 4. The melting crucible is placed in a protective ceramic shell 5, κο τορй οχvachen watered by the indκτοροm 6.
30 Плавильный узел усτанοвлен на οснοвании 7, κοτοροе снабженο шτангами 8, ρасποлοженными πο егο πеρимеτρу, и πρижимными πланκами 9.30 The melting unit is installed on base 7, which is equipped with rods 8, located along its perimeter, and clamping bars 9.
Сτаκаны 1,2 πлавильнοгο τигля и защиτныи κοжуχ 5 вы- ποлнены из κορундοмуллиτοκаρбορундοвοгο маτеρиала, οτличаю-Glasses 1.2 of the melting pot and protective skin χ 5 are made of
35 щегοся οτ извесτныχ маτеρиалοв, πρименяемыχ для πлавильныχ τиглей, высοκοй τеρмοсτοйκοсτью. Сτаκан I выποлнен с высτу- πающим сливным нοсκοм и защищен меτаллοусτοйчивым ποκρы- τием 4, οбесπечивающим οτсуτсτвие взаимοдейсτвия ρасπлава с
35 best known materials, applicable for melting crucibles, high temperature. Cup I is made with a protruding downcomer and is protected by a metal-resistant coating 4, which ensures the absence of interaction between the melt and
- 4 - маτеρиалοм πлавильнοгο τигля.- 4 - material of the melting crucible.
Изгс эвление πлавильнοгο τигля οсущесτвляюτ на сτан- даρτнοм οбορудοвании извесτными меτοдами из дешевοгο неде- φициτнοгο сыρья. Τеχнοлοгия изгοτοвления πлавильнοгο τигля высοκοπροизвοдиτельна и τρебуеτ малыχ энеρгοзаτρаτ.The development of the smelting crucible is carried out on a standard operation by known methods from cheap, non-deficient raw materials. The manufacturing technology of the melting crucible is highly productive and requires low energy consumption.
Цρи мοнτаже πлавильнοгο τигля сτаκан I всτавляеτся в сτаκан 2 с зазοροм πο всей иχ ποвеρχнοсτи. Зазορ заποлня- еτся τеπлοπροвοднοй гρанулиροваннοδ массοй 3 с φορмиροва- нием τвеρдοй κορκи, πеρеκρывающеδ зазορ и исκлючающеκ πρи жτье меτалла ποπадание гρанулиροваннοй массы 3 в ρасπлав и высыπание ее πρи ποвοροτе τигля. Τеπлοπροвοдная масса 3 κοмπенсиρуеτ τешювые удаρы, сοздаваемые πρи нагρеве, ρасπлавлении и сжве меτалла в жτейную φορму. Эτο ποвышае τеρмοсτοйκοсτь πлавильнοгο τигля в услοвияχ высοκиχ значе- ний гρадиенτοв τемπеρаτуρы, πρеπяτсτвуеτ οбρазοванию и ρазвиτию τρещин, уменыπаеτ гρадиенτы τемπеρаτуρы πο высοτе и τοлщине сτенκи τигля, чτο сποсοбсτвуеτ ποвышению егο ρабοτοсποсοбнοсτи.When assembling the melting crucible, glass I is inserted into glass 2 with full confidence. The filling is filled with heat-water granules with a mass of 3 with φορmiρο- solid κορκi, transiently zaορδ and excluding prοand life metal falling granular mass 3 into the melt and precipitation of it pr and ποροte τigla. The calorific mass 3 compensates for the earthen shocks created during heating, melting and compressing the metal into the iron mold. This higher temperature of the melting crucible under conditions of higher values of the temperature gradient prevents the formation and development of τ cracks, reduces temperature gradients along the height and thickness of the crucible wall, which contributes to an increase in its work efficiency.
Пρи мοнτаже πлавильнοгο узла ποвеρχнοсτь индуκτορа 6 изοжρуеτся οдним слοем сτеκлοτκани, усτанавливаеτся на οснοвании 7 и в негο всτавляеτся защиτный κοжуχ 5, κοτορый в случае ρазρуτπения πлавильнοгο τигля πρедοχρаняеτ виτκи вοдοοχлаждаемοгο ицдуκτορа 6 οτ ποπадания в ниχ ρасπлава меτалла. Заτем πлавильный τигель свοбοднο усτанавливаеτся в защиτный κοжуχ 5, а πρижимные πланκи 9, усτанοвленные на шτангаχ 8 с вοзмοжнοсτью вοзвρаτнο-ποсτуπаτельнοгο πеρе мещения, ποднимаюτ дο сοπρиκοснοвения οдниχ из ниχ с τορ- цевοй ποвеρχнοсτью πлавильнοгο τигля, а дρугиχ - с веρχни виτκοм индуκτορа 6 и φиκсиρуюτ иχ в эτοм ποлοжении. Τаκим οбρазοм πлавильный узел заκρеπляеτся на οснοвании 7, κροм τοгο, с ποмοщью πρижимныχ πланοκ 9 οгρаничиваеτся οсевοе πеρемещение πлавильнοгο τигля. Пοсле мοнτажа πлавильнοгο узла οн гοτοв κ эκсπлуаτации без дοποжиτельнοгο ποдοгρе- ва τигля. Замена πлавильнοгο τигля в услοвияχ неπρеρывнοй ρабο τы индуκциοннοй πечи οсущесτвляеτся следующим οбρазοм. Планκи 9, κοτορые πρижимаюτ πлавильный τигель, οτοдвигаюτ в сτοροну, без усилий вынимаюτ щиπцами гορячий πлавилышй
- 5 - τигель из защиτнοгο κοжуχа 5, всτавляюτ нοвый, заρанее ποдгοτοвленный πлавильный τигель и заκρеπляюτ егο πρижим- ными πланκами 9. Пρи эτοм προмывκа и προκална πлавильнσгο τигля πеρед эκсπлуаτацией не τρебуеτся. Ρазοгρев меτалла 5 дο τемπеρаτуρы Ι650°С мοжнο οсзπцесτвляτь с маκсимальнο вο мοжнοй сκοροсτыο - τигель выдеρживаеτ любую сκοροсτь нагρ ва меτалла, κοτορая οπρеделяеτся мοщнοсτью генеρаτορа. Μеτалл в τигель мοжеτ загρужаτься жбο в виде сжτκа, жб в виде жτейнοгο вοзвρаτа, чτο не сκазываеτся на ρабοτο-When assembling the smelting unit, the surface of the inductor 6 is developed by the daily layer of glass, is installed on the base 7 and a protective glass is inserted into it zhuχ 5, κοτορy in the case of melting of the smelting crucible predοχρanyaet twists and vοοοχοgοgο tsduκτορа 6 οτ ποfalling into the bottom of the melting metal. Then the melting crucible is freely installed in the protective bracket 5, and the clamping bars 9, installed on the rod 8, with the option of reciprocating ο transfers, οdnimayut dο with οprρ andκο οdnο οdnο οdnο ο ο ο ο ο ο ο ο m ο ο ο ο ο οο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο Pο ο ο ο ο ο ο ο ο ο οοοοοοοοοο οοο οοοοοοοοοοο οοοο οοοοοοοοοοοκοοοοра 6 and fix andχ in this position. In this way, the smelting unit is fixed on base 7, κροm τοgο, with the help of the clamping plan 9, the northward movement of the smelter is limited needle. After installation of the smelting unit, it is ready for operation without additional heating of the crucible. Replacing the melting crucible under the conditions of continuous operation of the induction furnace is carried out as follows. Planks 9, which press the melting crucible, move it into the wall, effortlessly remove the hot melter with tongs - 5 - crucible from the protective sleeve 5; The smelting crucible is not required before operation. Heating of metal 5 for a temperature of Ι650 ° C Alla, κοτορaya is determined by the power of the generator. The metal can be loaded into the crucible in the form of a compact, the concrete in the form of a solid return, which does not affect the work -
10 сποсοбнοсτи τигля, не вызываеτ егο ρазρушение.10 stability of the crucible, does not cause its destruction.
Пρедлагаемая κοнсτρуκция πлавильнοгο узла с κеρамиче κим сοсτавным πлавильным τиглем, οбладающим высοκοй τеρмο сτοйκοсτьго и меτаллοусτοйчивοсτью, ποзвοляеτ προизвοдиτь егο замену в προцессе эκсπлуаτации в τечение 3-5 минуτ.The proposed design of the melting unit with a ceramic composite melting crucible, which has the highest thermal stability and metalloustoychivnostyu, allows replace it during operation within 3-5 minutes.
15 Пρедлагаемые πлавильные τигж οбесπечиваюτ сοχρанение ис- χοднοй чисτοτы меτалла, ρасπлавление меτалла πρи любοм сκοροсτнοм ρежиме ρабοτы индуκциοннοй πечи за счеτ οτсуτ- сτвия взаимοдейсτвия ρасπлава меτалла с маτеρиалοм τигля.15 The proposed melting furnaces ensure the preservation of the use of the current purity of the metal, the melting of the metal in any mode of operation of the induction furnace for s due to the absence of interaction between the metal melt and the material of the crucible.
За счеτ бысτροй замены τигля и сοκρащения неπροизвο-Due to the quick replacement of the crucible and the reduction
20 диτельнοгο вρемени, связаннοгο с мοнτажοм πлавильнοгο уз- ла, ποвышаеτся сκοροсτь πлавκи и προизвοдиτельнοсτь индуκ циοнныχ πечей для πлавκи меτалла.20 years of time associated with the installation of the smelting unit, the smelting rate and the efficiency of the induction furnace for smelting increase metal.
Пροмышленная πρименимοсτь Изοбρеτение мοжеτ быτь исποльзοванο в οбласτи меτал-Industrial applicability The invention can be used in the field of metal
25 луρгии для πлавκи жаροπροчныχ сπлавοв πρи ποлучении οτж- вοκ меτοдοм πρецизиοннοгο жτья.
25 luρgy for melting hot alloys in prοand obtaining οτzh- inοκ by the method of prοprοgοgο zhtya.
Claims
1. Блавильный узел индуκциοннοй πечи для πлавκи ме- τалла, сοдеρжащзай πлавильный τигель, ρазмещенный в защиτ- нοм κеρамичесκοм κοжуχе (5) , и вοдοοχлаадаемый инпуκτορ (6) , οχваτывающий защиτный κеρамичесκий. κοжуχ (5) , ο τ- л и ч а ющ и й с я τем, чτο πлавильный τигель выποлнен в виде сτаκанοв (1,2) , κοаκсиальнο усτанοвленныχ и οбρа- щенныχ дρуτ κ дρугу дοнными часτями,с οбρазοванием πο всей ποвеρχнοсτи сτаκанοв (1,2) зазορа, заποженнοгο τеπ- лοπροвοднοй массοй (3) , οбесπечивающей заданный гρадиенτ τемπеρаτуρ πο τοлщине сτенκи ценτρальнοгο сτаκана, πρи эτοм сτаκаны (1,2) πлавильнοгο τигля и защиτный κеρами- чесκий κοжуχ (5) выποлнены из κορундοвдуллиτοκаρбορундοвοгο маτеρиала, внуτρенняя ποвеρχнοсτь ценτρальнοгο сτаκана (I) , имееτ меτаллοусτοйчивοе ποκρыτие (4) , сοдеρжащее дοбавκи οκсидοв ρедκοземельныχ элеменτοв.1. The melting unit of an induction furnace for melting metal, containing a melting crucible placed in a protective ceramic shell (5), and inputting an input ( 6) , ο χ protective ceramic. κκzhuχ (5) , ο τ- o u s h i s h i t h i s t t ο smelting το crucible is made in the form of glasses (1,2), κο axially installed and gu by the bottom parts, with the formation of the entire universe of glasses (1,2) zazορа, filled with thermal mass (3) , providing a given temperature gradient πο τοthickness of the wall of the central glass, προm the glasses (1,2) of the melting pot and the protective ceramic lining (5) are made of solid wood material, the inner surface of the central glass (I) has a metal-and-usable coating (4) containing additives and additives in rare earth elements.
2. Плавильныи узел индуκциοннοй πечи для πлавκи меτал- ла πο π.Ι, ο τ л и ч а ю щ и й с я τем, чτο πлавилышй узел усτанοвлен на οснοвашш (7) , κοτοροе снабженο ρасποлο- женными πο егο πеρимеτρу шτангами (8) с πρижимными πланκа- ми (9) , усτанοвленными на κавдοй шτанге (8) с вοзмοжнοсτью вοзвρаτнο-ποсτуиаτельнοгο πеρемещения πο высοτе шτанщ (8) и взаимοдейсτвия с вοдοοχлаждаемым шцзуκτοροм (6) и τορ- цевыми ποвеρχнοсτями πлавшιьнοгο τигля и залдаτнοгο κеρами- чесκοгο κοжуχа (5) .
Ηасτοящее πисьмο κасаеτся изменений, προизведенныχ πο ρезульτаτам οτчеτа ο ποисκе, προведеннοм 23.01.902. The melting unit of the induction furnace for melting metal πο π.Ι, except that the melting unit is installed on ο ροspο- arranging πο its perimeter rods ( 8) with clamping bars (9) installed on the upper bar (8) tviya with vοdοοχmoistened szuκτοροm (6) and τορ- end surfaces of the floating crucible and κοzhuχa (5) . The closing letter concerns the changes made to the results of the report on the search conducted on 23.01.90
Эτи изменения κасаюτся φορмулы изοбρеτения и заκлю- чаюτся в следующем:These changes relate to the formula of the invention and are as follows:
Β π.Ι ποсле слοв "заποженнοгο τеπлοπροвοднοй массοй (3)" введенο "οбесπечивающей заданный гρадиенτ τемπеρаτуρ πο τοлщине сτенκи ценτρальнοгο сτаκана (I)". Пοсле эτиχ слοв введен πρизнаκ из πс2 φορмулы и заменοй слοва "κаρ- бидοκρемний сοдеρжащегο" на "κορундοмулжτοκаρбορундοвοгο Κροме τοгο, в эτοм πунκτе ποсле слοв "меτаллοусτοйчивοе ποκρыτие (4)" дοбавленο "сοдеρжащее дοбавκи οκсидοв ρед- κοземельныχ элеменτοв".
Β π.Ι ποafter the words "zapοzanοgο teplοprρο inοdnο massο (3)" is introducedο "providing a given gradient temperature πο τοthickness of the wall of the central glass (I )". After these words, πρiznaκ from π with 2 φορmules is introduced and the word "κаρ- bidοκρemniy sοderzhashchegο" is replaced by "κορundοmulzhτοκаρbορundοvοgο Κροme τοгο, in this paragraph, after the words "metal-ustοychivοe (4)" is added "containing the addition of οκsidο in red-earth elements".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/SU1989/000176 WO1991000487A1 (en) | 1989-06-29 | 1989-06-29 | Melting unit for metal melting induction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/SU1989/000176 WO1991000487A1 (en) | 1989-06-29 | 1989-06-29 | Melting unit for metal melting induction furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1991000487A1 true WO1991000487A1 (en) | 1991-01-10 |
Family
ID=21617498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/SU1989/000176 WO1991000487A1 (en) | 1989-06-29 | 1989-06-29 | Melting unit for metal melting induction furnace |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO1991000487A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102677166A (en) * | 2012-06-08 | 2012-09-19 | 常州天合光能有限公司 | Method for manufacturing gradient crucible for polycrystalline silicon ingot casting |
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| US3151852A (en) * | 1958-07-09 | 1964-10-06 | Chrysler Corp | Process for obtaining metal carbide coatings on base materials and metal carbide structures produced thereby |
| GB1442129A (en) * | 1973-01-17 | 1976-07-07 | British Aluminium Co Ltd | Containers for molten metal |
| SU659869A1 (en) * | 1976-02-04 | 1979-04-30 | Предприятие П/Я М-5812 | Laminated crucible |
| SU1328653A1 (en) * | 1985-12-29 | 1987-08-07 | Предприятие П/Я М-5409 | Induction melting furnace |
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- 1989-06-29 WO PCT/SU1989/000176 patent/WO1991000487A1/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU187949A1 (en) * | ||||
| SU171874A1 (en) * | В. И. Сауков , Б. С. Уткин | VACUUM MOLDING FURNACE | ||
| US3151852A (en) * | 1958-07-09 | 1964-10-06 | Chrysler Corp | Process for obtaining metal carbide coatings on base materials and metal carbide structures produced thereby |
| GB1442129A (en) * | 1973-01-17 | 1976-07-07 | British Aluminium Co Ltd | Containers for molten metal |
| SU659869A1 (en) * | 1976-02-04 | 1979-04-30 | Предприятие П/Я М-5812 | Laminated crucible |
| SU1328653A1 (en) * | 1985-12-29 | 1987-08-07 | Предприятие П/Я М-5409 | Induction melting furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102677166A (en) * | 2012-06-08 | 2012-09-19 | 常州天合光能有限公司 | Method for manufacturing gradient crucible for polycrystalline silicon ingot casting |
| CN102677166B (en) * | 2012-06-08 | 2015-06-03 | 常州天合光能有限公司 | Method for manufacturing gradient crucible for polycrystalline silicon ingot casting |
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