CN102278884A - Retaining furnace for low-voltage casting - Google Patents
Retaining furnace for low-voltage casting Download PDFInfo
- Publication number
- CN102278884A CN102278884A CN2010105368863A CN201010536886A CN102278884A CN 102278884 A CN102278884 A CN 102278884A CN 2010105368863 A CN2010105368863 A CN 2010105368863A CN 201010536886 A CN201010536886 A CN 201010536886A CN 102278884 A CN102278884 A CN 102278884A
- Authority
- CN
- China
- Prior art keywords
- furnace
- stove
- low pressure
- furnace shell
- insulation layer
- 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
Images
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention provides a retaining furnace for low-voltage casting. The retaining furnace for low-voltage casting has furnace wall temperature lowered below a safe 45 degrees to protect people from being hurt due to the fact that even people contact the furnace wall with the temperature people will not be burned. Meanwhile, the furnace wall is conducive to improving thermal efficiency. The surface temperature is kept below 50 DEG by equipping an outer heat insulation layer having a relatively small conductivity factor and a relatively low heat accumulation amount on the periphery of the furnace shell. Or by equipping a space in the outer heat insulation layer and making a double-layer furnace shell filled with cheap and heat-resistant raw materials, the retaining furnace can make the surface temperature below 45 DEG.
Description
Technical field
The present invention relates to the furnace wall of a kind of low pressure casting with the maintenance stove.
Background technology
Low pressure castings such as aluminium roughly are divided into the structure that keeps stove and shown in Figure 1 graphite system or crucible made of iron (container) are accommodated in structure in the columnar obturator made of iron or shown in Figure 2 with container floor with heat insulation layer is shaped integratedly and cover the airtight construction of periphery with furnace shell.
Pouring procedure is to utilize atmosphere etc. with atmospheric pressure of less than the liquation face in the stove to be pressurizeed, and liquation is filled into by feeder sleeve to be configured in the mould that keeps the stove top in liquation.
The low pressure casting that the present invention relates to a kind of Construction integration that does not use crucible etc. shown in Figure 2 is with keeping stove, below, this furnace wall structure is described.
The container floor that is used for taking in liquation is to take in the multi-ply construction that the 1st heat insulation layer of hard slightly of proportion about 0.3 and the 2nd soft heat insulation layer of proportion 0.1～0.15 etc. form at iron shell (furnace wall); Above-mentioned the 1st heat insulation layer is made like this: the unshape refractory (castable) of the aluminum oxide that refractory damage property is higher or amorphous refractory (refractory brick) are laid, and are configured as alumina fibre and silicon dioxide fibre etc. tabular on the shell of container floor; Above-mentioned the 2nd heat insulation layer is made like this: the laminated ceramic fiber is configured as cover (blanket) shape by acupuncture (needling) with it.
The container floor of being made by unshape refractory can cause producing be full of cracks, cracked because of thermal spalling (thermalspalling).In addition, the container floor of making by amorphous refractory can because of sur-face peeling etc. cause certain hour after liquation infiltrate from seam.On the other hand, because low pressure casting pressurizes to the liquation face in the stove with the maintenance stove, the liquation of infiltration arrives iron shell and cools off, solidifies, and therefore can not leak into the outside.
But the liquation of infiltration not only can cause the furnace wall distortion, because aluminium is the higher metal of thermal conductivity factor that is only second to silver, copper, gold, the temperature of furnace wall is risen.The furnace wall of high temperature can be caused injuries such as scald to human body, and, because of the temperature difference of the environment temperature around furnace wall and the stove causes heat dissipation capacity to increase, significant energy loss takes place.
In patent documentation 1, proposed a kind of shell is made double shells structure, the scheme of vacuum layer is set in the centre.
In order for a long time the double shells space to be kept vacuum, be difficult to use the common steel of oxide etch.Under situation about using usually, because of the production costs of fee of material and vacuum welding etc. causes the manufacturing cost costliness as the raw materials such as SUS304 of vacuum tank raw material.
Patent documentation 1: Japanese kokai publication hei 2007-101064 communique
Summary of the invention
The object of the present invention is to provide a kind of low pressure casting of cheapness that reduces the hull-skin temperature of stove and personal injury, safety such as can not scald and improve energy-saving effect with keeping stove.
A kind of low pressure casting is with keeping stove, this low pressure casting is that the periphery of the container floor of amorphous refractory or unshape refractory keeps stove by the airtight pressurization that heat insulation layer and furnace shell constitute with the maintenance stove, it is characterized in that, the outer heat insulation layer that is made of ceramic fibre or foamed ceramic more than the thickness 100mm is set in the periphery of this furnace shell.
Outside ceramic fibre constitutes under the situation of heat insulation layer, be preferably at the furnace lining of furnace outer wall weld metal system with supporting member etc., heat insulation layer outside the furnace bottom compression is provided with pillar from furnace shell grate platform of heat insulation layer lower end outside being arranged on, and by the welding anchor post.In addition, outside foamed ceramic constitutes, under the situation of heat insulation layer, can apply the bonding agent of about 200 ℃ of heat resisting temperatures, and implement to apply bonding agent by spraying.In addition, also can use ceramic fibre and foamed ceramic to constitute outer heat insulation layer simultaneously.
A kind of low pressure casting is with keeping stove, this low pressure casting is that the periphery of the container floor of amorphous refractory or unshape refractory keeps stove by the airtight pressurization that heat insulation layer and furnace shell constitute with the maintenance stove, it is characterized in that, guarantee the 2nd furnace shell in the space more than the 120mm in the periphery setting of this furnace shell, (bulkinsulation is with Al to fill the varicosity material in this space
2O
3And SiO
2Deng mineral dissolution and carry out fibrillatable processing after spongy material is made in their polymerizations) or foamed ceramic.
In the present invention, varicosity material (ceramic short fiber), foamed ceramic not being applied bonding agent etc. just can use.As the foamed ceramic material, the material that also can use silicon ball (Silas balloon, シ ラ ス バ Le one Application), foaming pearlite and artificial lightweight aggregate etc., they is mixed etc.
The present invention is by heat insulation layer outside comprising in the furnace wall, furnace outer wall surface temperature 80 ℃ when in the past using the initial stage can be reduced to less than 50 ℃, therefore, even touch the outer wall of stove because of carelessness, personal injuries such as scald can not take place yet, and have the energy-saving effect about 70%.
Description of drawings
Fig. 1 is to use the cutaway view of the low pressure casting stove in the past of crucible.
Fig. 2 is the cutaway view of the low pressure casting stove in the past of airtight construction.
Fig. 3 is the whole general profile chart of technical scheme 1 described low pressure casting of the present invention with the maintenance stove.
Fig. 4 is the whole general profile charts of technical scheme 2 described low pressure castings of the present invention with the maintenance stove.
Fig. 5 is the furnace wall amplification view of the described low pressure casting in the past of Fig. 2 with the maintenance stove.
Fig. 6 is the furnace wall amplification view of the described low pressure casting of Fig. 3 with the maintenance stove.
Fig. 7 is the furnace wall amplification view of the described low pressure casting of Fig. 4 with the maintenance stove.
The specific embodiment
Below, construct with the stove that keeps stove with reference to accompanying drawing 1 and Fig. 2 explanation low pressure casting in the past.In addition, stove structure of the present invention is described, describes the best mode in cross section, furnace wall with reference to accompanying drawing 5～Fig. 7 in detail with accompanying drawing 3 and Fig. 4.
Embodiment
As shown in Figure 1, the low pressure casting that uses crucible 1 in container is with keeping stove A to utilize seal 7 will dispose the heat insulation layer 4 of furnace shell 2 and thermal source 3 (representing electrothermal in following legend) and be used between the die holder 6 of mounting mould 5 airtightly, and this low pressure casting comprises feeder sleeve 8 and air hose 9 with maintenance stove A.Rise through feeder sleeve 8 and be filled in mould 5 and the die cavity 5a roughly the same shape of finished product by in stove, applying gas pressure by air hose 9, make the liquation M that accumulates in the crucible 1.
Fig. 2 does not use the legend of the low pressure casting in the past of crucible with maintenance stove B.This low pressure casting is that furnace shell 2 by thickness 12t constitutes with keeping stove B, and this furnace shell 2 is made by the 1st insulation material layer 4a and the 2nd insulation material layer 4b that the incorporate thickness of container 1a with thickness 50mm is 50mm, in the internal configurations of furnace shell 2 thermal source 3 is arranged.At this low pressure casting with keeping being provided with supply opening 10 and the feed flow door 11 that is used for supply liquation M in the stove.In addition, Fig. 5 represents the furnace wall section A-A in detail '.
Owing to directly the liquation M that accumulates in the container 1a is heated, therefore, to compare with the stove that uses crucible 1, energy efficiency is better.Because furnace shell 2 (furnace body outer wall) temperature is 80 ℃～100 ℃ a high temperature, therefore, utilize chart board to represent caution promptings such as High Temperature.
In addition, the structure of mould 5 and feeder sleeve 8 etc., the fill method of liquation M are identical with structure, the method for use crucible 1 shown in Figure 1, detailed in the reference legend below this figure.
Fig. 3 is the whole general profile chart of technical scheme 1 described low pressure casting of the present invention with maintenance stove C.This low pressure casting is that the outer heat insulation layer 14 of the ceramic fibre of Weld-supporting utensil 13 and fixed thickness 100mm on the shell of the furnace shell 2 of thickness 12t forms with keeping stove C, internal configurations at this furnace shell 2 has thermal source 3, and this furnace shell 2 is made by the 1st insulation material layer 4a and the 2nd insulation material layer 4b that the incorporate thickness of container 1a with thickness 50mm is 50mm.
In order to prevent from the periphery part of outer heat insulation layer 14, be die holder 6 and the leakage of supply opening 10 places that the steel pipe, the steel plate that are welded on the furnace shell 2 extend.In addition, also can be after the periphery part construction of external heat insulation layer 14 carry out fine finishining with mortar etc.In addition, Fig. 6 represents the furnace wall section B-B in detail '.
Fig. 4 is the whole general profile charts of technical scheme 2 described low pressure castings of the present invention with maintenance stove D.This low pressure casting is to form like this with the maintenance stove: at the outside Weld-supporting utensil 13 of the furnace shell 2 of thickness 9mm, internal configurations at furnace shell 2 has thermal source 3, the 2nd furnace shell 2a that forms the thickness 12mm that guarantees the 120mm space on furnace shell 2 fixes the nut portions of device for supporting 13, and filling-foam pottery in the space of 120mm, this furnace shell 2 are positioned at, and thickness that make is the two-layer insulation material layer 4a of 50mm and the outside of insulation material layer 4b with the container 1a of thickness 50mm is integrated.In addition, Fig. 7 represents cross section, furnace wall C-C ' in detail.
(comparative example) furnace wall temperature and loses heat
Radiation loss is calculated with the maintenance stove incorporate low pressure casting in the past as 100.
| Cross section number | The thickness of outer insulation | Furnace wall temperature | Radiation loss | Remarks |
| A-A’ | There is not outer insulation | 87℃ | 100％ | Contact can be scalded |
| B-B’ | 50mm | 63℃ | 59％ | Might scald |
| B-B’ | 100mm | 44℃ | 28％ | Do not scald |
| C-C’ | 120mm | 43℃ | 27％ | Do not scald |
Industrial applicibility
The present invention also can be used in the industrial furnace except that low pressure casting is used the maintenance stove etc.
Claims (2)
1. a low pressure casting is with keeping stove, and this low pressure casting is that the periphery of the container floor of amorphous refractory or unshape refractory keeps stove by the airtight pressurization that heat insulation layer and furnace shell constitute with the maintenance stove, it is characterized in that,
In the periphery of this furnace shell the outer heat insulation layer that ceramic fibre more than the thickness 100mm or foamed ceramic constitute is set.
2. a low pressure casting is with keeping stove, and this low pressure casting is that the periphery of the container floor of amorphous refractory or unshape refractory keeps stove by the airtight pressurization that heat insulation layer and furnace shell constitute with the maintenance stove, it is characterized in that,
Guarantee the 2nd furnace shell in the space more than the 120mm in the periphery setting of this furnace shell, be filled with varicosity material or foamed ceramic in the space between this furnace shell and the 2nd furnace shell.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010144244A JP2011257119A (en) | 2010-06-09 | 2010-06-09 | Holding furnace for low pressure casting |
| JP2010-144244 | 2010-06-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102278884A true CN102278884A (en) | 2011-12-14 |
Family
ID=45104479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105368863A Pending CN102278884A (en) | 2010-06-09 | 2010-11-08 | Retaining furnace for low-voltage casting |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2011257119A (en) |
| CN (1) | CN102278884A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482517A (en) * | 2015-09-01 | 2017-03-08 | 边仁杰 | Hot air circulation die casting stove |
| CN112705693A (en) * | 2020-12-14 | 2021-04-27 | 浙江英洛华磁业有限公司 | Package in middle of multilayer combination formula for casting |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862021A (en) * | 2012-12-18 | 2014-06-18 | 侯伟 | Dual-layer sealing furnace cover for low-pressure casting |
-
2010
- 2010-06-09 JP JP2010144244A patent/JP2011257119A/en active Pending
- 2010-11-08 CN CN2010105368863A patent/CN102278884A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482517A (en) * | 2015-09-01 | 2017-03-08 | 边仁杰 | Hot air circulation die casting stove |
| CN112705693A (en) * | 2020-12-14 | 2021-04-27 | 浙江英洛华磁业有限公司 | Package in middle of multilayer combination formula for casting |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011257119A (en) | 2011-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103353225B (en) | A kind of high-pressure casting aluminium liquid holding furnace | |
| CN109341353B (en) | Low heat dissipation furnace lining structure of hot rolling heating furnace | |
| CN102278884A (en) | Retaining furnace for low-voltage casting | |
| CN205808105U (en) | A kind of casting aluminum alloy melting & holding furnace | |
| CN205996184U (en) | A kind of energy-saving ladle of low-material-consumption | |
| WO2013179409A1 (en) | Crown structure | |
| CN202621906U (en) | Hot metal ladle | |
| CN2901212Y (en) | Sandwich furnace door | |
| CN202377516U (en) | Silicon nitride and silicon carbide combined ceramic lift tube with embedded ceramic fiber | |
| CN2901208Y (en) | Continuous cast composite crucible | |
| CN111811282A (en) | Heat insulation protective layer structure of water-cooling furnace roller and preparation method thereof | |
| CN103388055B (en) | Furnace beam and vertical column fire-resistant thermal insulation lining structure of walking beam furnace for heating high-temperature oriented silicon steel and manufacturing method of structure | |
| JP4421506B2 (en) | Intermediate Stoke Manufacturing Method | |
| CN205496547U (en) | High back pressure low pressure casting heat preservation stove | |
| JP3016124B2 (en) | Molten container and aluminum holding furnace | |
| JP2005195207A (en) | Precast block for coke oven door and its manufacturing method | |
| JP5062637B2 (en) | Intermediate Stoke Manufacturing Method | |
| JP3192138U (en) | Non-ferrous metal melting and holding furnace | |
| CN2856897Y (en) | Simple linned rotary kiln | |
| CN206514678U (en) | Holding furnace | |
| CN216729532U (en) | Silicon metal tapping and refining silicon ladle integral lining structure | |
| CN202039095U (en) | Stainless steel continuous bright annealing furnace | |
| JP5116611B2 (en) | Container that can contain objects | |
| CN201538807U (en) | Vacuum creep sizing furnace | |
| CN217210327U (en) | Heat-insulating holding furnace with vacuum ball |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111214 |