CN202350513U - Transitional forehearth of power frequency furnace - Google Patents
Transitional forehearth of power frequency furnace Download PDFInfo
- Publication number
- CN202350513U CN202350513U CN2011203748251U CN201120374825U CN202350513U CN 202350513 U CN202350513 U CN 202350513U CN 2011203748251 U CN2011203748251 U CN 2011203748251U CN 201120374825 U CN201120374825 U CN 201120374825U CN 202350513 U CN202350513 U CN 202350513U
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- forehearth
- frequency furnace
- main frequency
- transition
- power frequency
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Abstract
The utility model discloses a transitional forehearth of a power frequency furnace. The transitional forehearth of the power frequency furnace is arranged between the power frequency furnace and a ladle, and comprises a cylindrical furnace body and an interlayer for partitioning the inner cavity of the cylindrical inner cavity, wherein a through groove is reserved between the lower part of the interlayer and the bottom surface of the inner cavity of the cylindrical furnace body; an iron outlet groove is formed at the upper end of the side wall of the cylindrical furnace body and opposite to the interlayer; and the ladle is positioned below the iron outlet groove of the transitional forehearth of the power frequency furnace. The transitional forehearth of the power frequency furnace also comprises an air flowing port which is formed on the bottom surface of the cylindrical furnace body. Molten iron of the power frequency furnace does not directly enter the ladle after being discharged from the furnace, but flows into the transitional forehearth firstly, so that the molten iron of the power frequency furnace is heated to a higher temperature, the quality of the molten iron is improved, meanwhile low inoculation treatment temperature can be guaranteed, and the quality of the cast is improved. In addition, the transitional forehearth has a simple structure and is easy to manufacture.
Description
Technical field
The utility model relates to the Castiron Melting field, particularly a kind of main frequency furnace transition forehearth.
Background technology
Temperature, chemical composition, degree of purity are three main metallurgical indexs of casting iron liquid, and the height of iron liquid temp directly has influence on composition and degree of purity.The raising of iron liquid temp helps improving mobile, can make that graphite refinement, matrix are fine and closely woven, mechanical property improves.Generally believe that before 1500 ℃, temperature is high more, helps guaranteeing above-mentioned effect more.The particularly important is, iron liquid is superheated to after 1475 ℃, and the oxygen in the iron liquid is mostly overflowed with the form of CO, has reduced the oxidation of iron liquid, significantly promotes the degree of purity of iron liquid.
After coming out of the stove, main frequency furnace iron liquid directly gets into ladle; Carry out inoculated then; Inoculated is to becoming the important means that improves cast iron in the modern Foundry Production; Inoculated is meant and in process of setting, in cast iron, adds additive, promotes forming core, suppresses growth, reaches the purpose of crystal grain thinning.In essence, inoculated mainly influences forming core and promotes crystal grain to dissociate.But it has a very big shortcoming, is exactly the inoculation fade phenomenon.Inoculation fade is meant the phenomenon that pregnant effect weakens gradually.If the inoculated temperature to iron liquid is too high, it is long more that iron liquid solidifies the time that needs, and then occurs inoculation fade more easily.
Therefore, hope to obtain high tapping temperature and lower inoculated temperature in the Foundry Production.
Yet, during at present furnace cupola-main frequency furnace double melting iron liquid is produced, basically all adopted the main frequency furnace iron liquid back of coming out of the stove directly to get into the technology of ladle, inoculated is carried out in iron notch or ladle.Tapping temperature is the same basically with the inoculated temperature, can not take into account high overtemperature of main frequency furnace and lower inoculated temperature simultaneously.
The utility model content
The technical problem that the utility model solves provides and a kind ofly can main frequency furnace iron liquid be superheated to higher temperature to improve its quality, can guarantee the main frequency furnace transition forehearth of lower inoculated temperature simultaneously again.
For achieving the above object; According to the utility model a kind of main frequency furnace transition forehearth is provided, has been arranged between main frequency furnace and the ladle, having comprised: tubular body of heater and the interlayer of separating tubular body of heater inner chamber; Leave through groove between the inner chamber bottom surface of interlayer below and tubular body of heater; The tubular side wall of furnace upper end relative with interlayer offers iron notch, and ladle is positioned at the iron notch below of this main frequency furnace transition forehearth, and this main frequency furnace transition forehearth also comprises: be opened near the stream of tubular body of heater bottom surface and eat dishes without rice or wine.
Further, interlayer is arranged on the diameter of a circle position, cross section of tubular body of heater.
Further, stream eat dishes without rice or wine to be opened in main frequency furnace transition forehearth iron notch under.
Further, the tubular body of heater is cylindric.
Technical scheme according to the utility model; Owing to directly do not get into ladle after the iron liquid of main frequency furnace is come out of the stove, but flow into the transition forehearth earlier, both the iron liquid in the main frequency furnace was superheated to higher temperature to improve its quality; Can guarantee simultaneously lower inoculated temperature again; Very favourable to promoting casting quality, in addition, the manufacturing simple in structure, easy of this transition forehearth.
Description of drawings
Fig. 1 is the main TV structure sketch map according to the main frequency furnace transition forehearth of the utility model;
Fig. 2 is the vertical sectional structure sketch map according to the main frequency furnace transition forehearth of the utility model;
Fig. 3 is the plan structure sketch map according to the main frequency furnace transition forehearth of the utility model;
Fig. 4 is the user mode structural representation according to the main frequency furnace transition forehearth of the utility model;
Fig. 5 is the flow chart according to the method for smelting of this transition forehearth of application of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the utility model is described in detail, but the protection domain that is to be understood that the utility model does not receive the restriction of the specific embodiment.
This main frequency furnace transition forehearth is arranged on iron notch 31 the place aheads of main frequency furnace 3, does not directly get into ladle 1 after the iron liquid in the main frequency furnace 3 is come out of the stove, but flows into transition forehearth 2 earlier.Comprise:
Referring to Fig. 1 to Fig. 3; This main frequency furnace transition forehearth comprises: cylindric body of heater 21 and interlayer 22; Interlayer 22 is arranged on the diameter of a circle position, cross section of cylindric body of heater 21; The inner chamber of cylindric body of heater 21 is divided into two subcavities 23,24, leaves through groove 25 between the inner chamber bottom surface of interlayer 22 belows and cylindric body of heater 21, make two subcavities 23,24 communicate in the bottom; The sidewall upper in the cylindric body of heater 21 sub-chambeies 24 relative with interlayer 22 offers iron notch 26, offers stream near the basal surface position of cylindric body of heater 21 under the iron notch 26 and eats dishes without rice or wine 27.Cylindric body of heater 21 can use refractory brick to be built into interlayer 22, and the size of transition forehearth 2 designs according to the iron liquid temp range of decrease, produced on-site beat.The requirement temperature range of decrease is big or productive temp is very fast, then need select the volume of bigger transition forehearth 2.Iron notch 26 will consider then that from the setting of furnace roof height the diameter of transition forehearth 2 and main frequency furnace iron flow go into speed.In normal the production, stream eats dishes without rice or wine 27 to block, when producing near at the end, through flowing the iron liquid in the empty transition forehearth 2 here.
As shown in Figure 4, transition forehearth 2 positions must be lower than the iron notch 31 of main frequency furnace 3, and can not be far away excessively apart from main frequency furnace 3, are advisable conveniently to accept the molten iron that main frequency furnace 3 pours into.In the foundry production, iron notch 26 belows that ladle 1 winched to transition forehearth 2 connect molten iron.
As shown in Figure 5; The method of smelting of using above-mentioned transition forehearth 2 is: when the molten iron in the main frequency furnace 3 be superheated to uniform temperature and refining qualified after; Pour the sub-chamber 23 of empty transition forehearth 2 into through the iron notch 31 of main frequency furnace 3; Iron liquid is through flowing to sub-chamber 24, because sub-chamber 23,24 two-part pressure equate that both sides iron liquid liquid level rises simultaneously through groove 25.When iron liquid liquid level during, stop to pour into iron liquid near iron notch 26.
At this moment, the iron liquid temp in the transition forehearth 2 prolongs in time and descends, and when reducing to desired value, then, the molten iron liquid level in two subcavities 23,24 of transition forehearth 2 continues to rise, and then flows out entering ladle 1 from the iron notch 26 in sub-chamber 24.So, the high temperature iron liquid that at every turn comes out from main frequency furnace 3 is all lowered the temperature in transition forehearth 2 processes, reaches the requirement of inoculated.Last stove molten iron of transition forehearth 2 flows 27 outflows of eating dishes without rice or wine through opening.
After coming out of the stove, the iron liquid of main frequency furnace 3 directly do not get into ladle 1; But flow into transition forehearth 2 earlier; Thereby the iron liquid in the main frequency furnace 3 is superheated to higher temperature to improve its quality, can guarantees lower inoculated temperature simultaneously again, very favourable to promoting casting quality; In addition, transition forehearth 2 simple in structure, easy manufacturings.
More than a disclosed specific embodiment that is merely the utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into the protection domain of the utility model.
Claims (4)
1. main frequency furnace transition forehearth; Be arranged between main frequency furnace and the ladle; It is characterized in that; Comprise: tubular body of heater and the interlayer of separating said tubular body of heater inner chamber, to leave through groove between the inner chamber bottom surface of said interlayer below and tubular body of heater, the said tubular side wall of furnace upper end relative with said interlayer offers iron notch; Said ladle is positioned at the said iron notch below of this main frequency furnace transition forehearth, and this main frequency furnace transition forehearth also comprises: be opened near the stream of said tubular body of heater bottom surface and eat dishes without rice or wine.
2. main frequency furnace transition forehearth according to claim 1 is characterized in that, said interlayer is arranged on the diameter of a circle position, cross section of said tubular body of heater.
3. main frequency furnace transition forehearth according to claim 1 is characterized in that, said stream eat dishes without rice or wine to be opened in said main frequency furnace transition forehearth iron notch under.
4. according to each described main frequency furnace transition forehearth in the claim 1 to 3, it is characterized in that said tubular body of heater is cylindric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203748251U CN202350513U (en) | 2011-09-30 | 2011-09-30 | Transitional forehearth of power frequency furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203748251U CN202350513U (en) | 2011-09-30 | 2011-09-30 | Transitional forehearth of power frequency furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202350513U true CN202350513U (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203748251U Expired - Lifetime CN202350513U (en) | 2011-09-30 | 2011-09-30 | Transitional forehearth of power frequency furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN202350513U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033047A (en) * | 2011-09-30 | 2013-04-10 | 广西玉柴机器股份有限公司 | Line frequency furnace transition fore-hearth and smelting method with the same applied |
-
2011
- 2011-09-30 CN CN2011203748251U patent/CN202350513U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033047A (en) * | 2011-09-30 | 2013-04-10 | 广西玉柴机器股份有限公司 | Line frequency furnace transition fore-hearth and smelting method with the same applied |
| CN103033047B (en) * | 2011-09-30 | 2014-07-02 | 广西玉柴机器股份有限公司 | Line frequency furnace transition fore-hearth and smelting method with the same applied |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120725 Effective date of abandoning: 20140702 |
|
| RGAV | Abandon patent right to avoid regrant |