CN106914609A - A kind of aluminium alloy melt heating heat preserving method - Google Patents
A kind of aluminium alloy melt heating heat preserving method Download PDFInfo
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- CN106914609A CN106914609A CN201710288405.3A CN201710288405A CN106914609A CN 106914609 A CN106914609 A CN 106914609A CN 201710288405 A CN201710288405 A CN 201710288405A CN 106914609 A CN106914609 A CN 106914609A
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- Prior art keywords
- heating
- aluminium alloy
- melt
- alloy melt
- heater
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Classifications
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- 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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
-
- 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
Abstract
The invention discloses a kind of aluminium alloy melt heating heat preserving method, the step of including heating and thermal insulation aluminium alloy melt, carry out heating and thermal insulation in the step to melt using aluminium alloy melt heating and heat-insulating device, aluminium alloy melt heating and heat-insulating device includes body of heater, electrical heating elements, temperature controller and temperature sensor；The inside of body of heater has cavity volume, and cavity volume constitutes melt temperature adjustment furnace chamber；Temperature sensor is arranged on body of heater；It is characterized in that：The step of the step of the step of heating and thermal insulation aluminium alloy melt also includes indirectly heat, indirectly heat, forms heating surface using the medial surface of the furnace lining of body of heater, and heating surface is used to heat the aluminium alloy melt in melt conditioning oven room.Aluminium alloy melt heating heat preserving method of the invention, simple and convenient with implementing, molten bath is heated and uniformity of temperature profile, it is easy to installs, change electrical heating elements, facilitates molten bath slag to remove operation, safe and reliable advantage.
Description
Technical field
The invention belongs to aluminium alloy smelting method field, and in particular to a kind of aluminium alloy melt heating heat preserving method.
Background technology
Before aluminium alloy cast form, it is required to that the heating of alloy furnace charge is fused into alloy melt first, obtains melt process
It is then transferred to after sublimate in temperature adjustment molten bath or holding furnace, by temperature adjustment to after meeting the temperature that follow-up casting technique is required,
Again manually or the mechanical weight feed cast form equipment of cast.In industrial production in practice, the product stable in order to obtain configuration
Product are, it is necessary to the aluminium alloy melt temperature to pouring into a mould carries out strict regulation and control.Being both needed in order to meet this requirement, in engineering will be pure
Degree meets desired aluminium alloy melt and is poured into a mould in the molten room of heating temperature adjustment of smelting equipment or in independent heating and thermal insulation stove
Preceding temperature adjusting.
At present, the metal bath electrical heating method for regulating temperature for being used in industrial production mainly has two classes：One class is top resistive
Heat tempering process（It is widely used in the molten room of heating temperature adjustment at home and abroad and stove）；Another kind of is immersion bottom-heated method
（Used in numerous new molten baths）.Above-mentioned two classes method each has following advantage and disadvantage：
During using top type electrical heating method for regulating temperature（The visible accompanying drawing 1 of specific schematic diagram）, stratie is installed in heating tune
The molten room of temperature and the molten bath top of stove, heating temperature adjustment is carried out by resistance heat radiation to molten bath.Although there is the method resistance to add
Thermal element easy care, replacing, stratie do not hinder the advantage that molten bath slag is removed, but this mode is molten because thermal source is located at
Pond top, heat can only be delivered to molten bath bottom by melt, as a result occur that molten bath top and bottom have obvious temperature
Difference（There is certain thermograde on melt pool height）, this does not only result in outer confession melt temperature with molten metal pool level height reduction
And change, can also occur high temperature element because of temperature difference at molten bath low temperature position crystallizes sedimentation, is changing melt alloy composition
Meanwhile, bottom ash is formed in molten bath bottom, increased slag hitting workload.
And immersion bottom-heated method for regulating temperature（The visible accompanying drawing 2 of specific schematic diagram）, then it is directed to what top heating faced
A kind of molten bath heat tempering process that problem is newly proposed.Such heating register is found in utility model patent
CN201620543247.2, CN201520893819.5 etc..The method is that stratie is shelved on into an insertion molten bath
In the protection pipe of bottom, heating temperature adjustment is carried out to melt from molten bath bottom by pillar.Though the method can obtain uniform up and down
Bath temperature, the efficiency of heating surface and efficiency higher, but the pillar for penetrating furnace lining insertion molten bath bottom need to be used for heating element heater is carried
For insulation blocking.The pillar not only hinders the removing operation of molten bath bottom ash；And it is once damaged, except potential melt leakage risk
Outward, also need stop production to overhaul for a long time to change, influence the stability of production.
Based on this, applicant considers that design is a kind of simple and reasonable, facilitates molten bath slag to remove operation, safe and reliable
Aluminium alloy melt heating heat preserving method.
The content of the invention
For above-mentioned the deficiencies in the prior art, the technical problems to be solved by the invention are：How a kind of structure letter is provided
It is single reasonable, facilitate molten bath slag to remove operation, safe and reliable aluminum alloy welding pool heating and heat-insulating device.
In order to solve the above-mentioned technical problem, present invention employs following technical scheme：
A kind of aluminium alloy melt heating heat preserving method, including the step of heating and thermal insulation aluminium alloy melt；
Melt is heated using aluminium alloy melt heating and heat-insulating device in the step of heating and thermal insulation aluminium alloy melt
Insulation, the aluminium alloy melt heating and heat-insulating device includes body of heater, electrical heating elements, temperature controller and temperature sensor；The stove
The inside of body has cavity volume, and the cavity volume constitutes melt temperature adjustment furnace chamber；The electrical heating elements are fixedly mounted on body of heater and use
Melt heating in the melt conditioning oven room；The output end of the temperature controller passes through cable and the electrical heating elements
Interface is connected, and the signal input part of the temperature controller is connected by cable with the output interface of the temperature sensor；Institute
Temperature sensor is stated to be arranged on the body of heater and for detecting the melt temperature in the melt conditioning oven room；
It is characterized in that：The step of the step of heating and thermal insulation aluminium alloy melt, also includes indirectly heat, the indirectly heat
The step of form heating surface using the medial surface of the furnace lining of body of heater, the heating surface is used for the melt temperature adjustment furnace chamber
Interior aluminium alloy melt is heated.
In the technical program, furnace lining refers to the furnace wall of body of heater.
Aluminium alloy melt heating heat preserving method of the invention is when in use：
First, in the Al-alloy metal melt after fusing being rotated into melt temperature adjustment furnace chamber.
Then, the Al-alloy metal holding temperature needed for being set by temperature controller, starting electrical heating elements carries out heating tune
Temperature.Temperature sensor detects the temperature of Al-alloy metal melt, when Al-alloy metal melt actual temperature is higher than established temperature,
Electrical heating elements stop heating；And when Al-alloy metal melt actual temperature is less than established temperature, electrical heating elements heater
Make, so as to ensure that Al-alloy metal melt is system established temperature in melt conditioning oven room.It can be seen that, aluminium alloy melt of the invention
Heating heat preserving method being capable of precise control melt temperature.
Additionally, because the step of aluminium alloy melt heating heat preserving method of the invention is using indirectly heat, this adds indirectly
The step of heat is that aluminium alloy melt is heated indirectly using the medial surface of the furnace lining of body of heater, so, can not only
Enough expand the volume of melt temperature adjustment furnace chamber, it is also possible to so that not having electrical heating elements in melt conditioning oven room stops scarfing cinder operation
Situation, so as to facilitate slag remove operation, lifted slag elimination efficiency.
Preferably, the furnace lining of the body of heater can heat conduction, and the furnace lining be internally provided with heating element heater install chamber,
The heating element heater installation cavity indoor location has the electrical heating elements, and enables that the medial surface of furnace lining constitutes heating surface.
Implemented using above-mentioned preferred scheme, the step of enable to indirectly heat the simplest.
Because electrical heating elements are not disposed on melt temperature adjustment furnace chamber, therefore electrical heating elements can be pacified more conveniently
Dress and change, and cause melt to leak risk in the absence of damage of furnace lining.Meanwhile, also because electrical heating elements are not disposed on melt tune
Warm furnace chamber, so electrical heating elements will not be made to constituting any stop in melt conditioning oven room so as to facilitate molten bath slag to remove
Industry.
Preferably, the melt temperature adjustment furnace chamber is in integrally funnel type structure.
After using above-mentioned preferred scheme, that is, enable that the bottom of melt temperature adjustment furnace chamber is converged to slag, so that just
In rapidly scarfing cinder so that it is more efficient, convenient that slag removes operation.
Preferably, the electrical heating elements are stratie.
The buying of stratie is convenient, and low cost, homogeneous heating, temperature control precision is high, can help the present invention
Aluminium alloy melt heating heat preserving method obtain more accurately heating and thermal insulation effect.
Preferably, the stratie generally string configuration；
The profile of the body of heater is in integrally up big and down small cone cylindrical structure；The furnace lining of the body of heater is internally provided with from the top down
The bar hole of extension, the upper end of the bar hole is the openend for stratie insertion, and the bar hole is along institute
The spaced multiple of circumferencial direction of body of heater is stated, each described bar hole constitutes the heating element heater and installs chamber, described to add
Grafting is provided with the stratie in thermal element installation cavity room.
After using above-mentioned preferred scheme, when stratie being installed on body of heater, only need to be by stratie through bar
Insertion can complete to install at shape hole, therefore enable to the installation of electrical heating elements and change more easy.
At the same time, after using " profile of body of heater is in integrally up big and down small cone cylindrical structure ", can be not by resistance
In the case of heating element heater insertion molten bath inner bottom part, uniform Temperature Distribution up and down is obtained in molten bath, suppressed because of molten bath bottom
While the high temperature element condensation that portion's temperature occurs less than temperature above, remove operation for molten bath bottom ash and facility is provided.
Preferably, the cone cylindrical structure is square tapered structure, the bar shaped pore size distribution is arranged at the tapered knot of the side
On the relative side of any two of structure.
So, the structure of the body of heater of square tapered structure is more simple（For cone）, manufacture more
For convenience.
Preferably, being socketed with heating element heater bushing outside the stratie.
After using above-mentioned preferred scheme, stratie can be protected with bushing by heating element heater, prevent electricity
Resistance heating element heater exists（Installed in chamber from heating element heater）Friction damage when installing or taking out.
Preferably, bottom position of the lower end of the stratie less than the melt temperature adjustment furnace chamber.
After using above-mentioned preferred scheme, the both sides body of heater of stratie and the bottom of the melt temperature adjustment furnace chamber are placed with
Portion's design in obtuse angle, can fully ensure that the melt in melt conditioning oven room is heated evenly, and will not exist on melt pool height
Obvious temperature difference, it is ensured that the temperature one for aluminium alloy melt is made peace stably outward.
Preferably, refractory material of the furnace lining using thermal conductivity factor more than 1 watt/ meter Du is obtained.
So, that is, cause that furnace lining has preferably heat conductivity, the heating and heat conduction for lifting stratie are imitated
Rate.
Preferably, the temperature controller is PCC.
Using PCC（Programmable computer controller）After as temperature controller, you can help the present invention using the advantage of PCC
Aluminium alloy melt heating heat preserving method obtain high reliability, programming and facilitate advantage, be easy to implement to high in melt conditioning oven room
The temperature adjusting of precision.
Compared with prior art, aluminium alloy melt heating heat preserving method beneficial effect of the invention is：
1st, the melt in molten bath is enabled to be heated and uniformity of temperature profile.It is placed with both sides body of heater and the institute of stratie
State melt temperature adjustment furnace chamber bottom being designed in obtuse angle and fully ensure that the melt in melt conditioning oven room is heated evenly, Bu Hui
There is obvious temperature difference on melt pool height, it is ensured that the temperature one for aluminium alloy melt is made peace stably outward.
2nd, molten bath slag is facilitated to remove operation.Because the molten molten bath of the aluminium alloy obtained using the present invention does not have upper and lower temperature difference,
It is not in the problem of the caused composition transfer of high-melting-point element crystallization and molten bath bottom slagging；
3rd, it is easily installed, changes electrical heating elements, it is safe and reliable.Because stratie is disposed on inside furnace lining not
Molten bath is inserted through body of heater, the completion of inboard wall of furnace body had both been ensure that, has effectively evaded the risk of aluminium alloy melt leakage；Again
Facility can be provided to install and changing stratie.
4th, because stratie is built-in, molten bath furnace wall complete specifications, bottom area shrinks so that slag removes operation
It is more efficient, convenient.
Brief description of the drawings
Fig. 1 is top resistive heat tempering process schematic diagram in background technology.
Fig. 2 is bottom immersion heating means schematic diagram in background technology.
Fig. 3 is a kind of structural representation of embodiment of aluminium alloy melt heating heat preserving method of the invention.
Fig. 4 is A-A sectional views in Fig. 3.
Marked in Fig. 1：The 1 molten room of --- bell, 2 --- stratie, 3 --- heating temperature adjustment, 4 --- body of heater.
Marked in Fig. 2：1 --- stratie, 2 --- stratie pillar, 3 --- heating temperature adjustment is melted
Room, 4 --- body of heater.
Marked in Fig. 3 and Fig. 4：1 --- melt temperature adjustment furnace chamber, 2 --- body of heater, 3 --- heating element heater installs chamber,
4 --- heating element heater bushing, 5 --- stratie.
Specific embodiment
The present invention is described in further detail to employ aluminum alloy melting method of the invention with reference to one kind.Its
In, for description using exemplary terms such as upper and lower, left and right, it is therefore intended that help reader to understand, without being intended for
Limitation.
During implementation, as shown in Figure 3 and Figure 4：
A kind of aluminium alloy melt heating heat preserving method, including the step of heating and thermal insulation aluminium alloy melt；
Melt is heated using aluminium alloy melt heating and heat-insulating device in the step of heating and thermal insulation aluminium alloy melt
Insulation, the aluminium alloy melt heating and heat-insulating device includes body of heater 2, electrical heating elements, temperature controller（Not shown in figure）And temperature
Sensor（Not shown in figure）；The inside of the body of heater 2 has cavity volume, and the cavity volume constitutes melt temperature adjustment furnace chamber 1；The electricity adds
Thermal element is fixedly mounted on body of heater 2 and for the melt heating in the melt conditioning oven room；The output of the temperature controller
End is connected by cable with the interface of the electrical heating elements, and the signal input part of the temperature controller passes through cable and the temperature
The output interface for spending sensor is connected；The temperature sensor is arranged on the body of heater and for detecting the melt temperature adjustment
Melt temperature in furnace chamber；
The step of the step of the step of heating and thermal insulation aluminium alloy melt also includes indirectly heat, indirectly heat, includes profit
Heating surface is formed with the medial surface of the furnace lining of body of heater, the heating surface is used to melt the aluminium alloy in the melt conditioning oven room
Body is heated.
During implementation, the body of heater can using with graphite crucible or induction furnace any one aluminium alloy melt entered in the ranks
Connect heating.
It is preferred that, the furnace lining of the body of heater 2 can heat conduction, and the furnace lining is internally provided with heating element heater and installs chamber 3, institute
State in heating element heater installation chamber 3 and the electrical heating elements are installed, and enable that the medial surface of furnace lining constitutes heating surface.
Wherein, it is in funnel type structure that the melt temperature adjustment furnace chamber 1 is overall.
Wherein, the electrical heating elements are stratie 5.
Wherein, the generally string configuration of the stratie 5；
The profile of the body of heater 2 is in integrally up big and down small cone cylindrical structure；The furnace lining of the body of heater 2 be internally provided with to
The bar hole of lower extension, the upper end of the bar hole is the openend for the insertion of stratie 5, and the bar hole is edge
The spaced multiple of circumferencial direction of the body of heater 2, each described bar hole constitutes the heating element heater and installs chamber 3, institute
State grafting in heating element heater installation chamber 3 and the stratie 5 is installed.
Wherein, the cone cylindrical structure is square tapered structure, and the bar shaped pore size distribution is arranged at side's tapered structure
On the relative side of any two.
Wherein, it is socketed with heating element heater bushing 4 outside the stratie 5.
During implementation, preferably heating element heater is with bushing 4 is by carborundum or matches grand（SIALON）In any one material be obtained.
So, you can so that heating element heater has high temperature resistant with bushing 4, intensity is big, and heat conductivility is good, strong excellent of shock resistance
Point, so as to mention the effect of preferably heat transfer and protective resistance heating element heater 5.
Wherein, bottom position of the lower end of the stratie 5 less than the melt temperature adjustment furnace chamber 1.
Wherein, refractory material of the furnace lining using thermal conductivity factor more than 1 watt/ meter Du is obtained.
During implementation, refractory material of the thermal conductivity factor more than 1 watt/ meter Du can select：Magnesia brick, chrome brick, chromium and magnesium brick, carborundum
Any one in brick or high-alumina brick.
Wherein, the temperature controller is PCC.
In the technical program, furnace lining refers to the furnace wall of body of heater.
Above-mentioned aluminium alloy melt heating heat preserving method is when in use：
First, in the Al-alloy metal melt after fusing being rotated into melt temperature adjustment furnace chamber.
Then, the Al-alloy metal holding temperature needed for being set by temperature controller, starting electrical heating elements carries out heating tune
Temperature.Temperature sensor detects the temperature of Al-alloy metal melt, when Al-alloy metal melt actual temperature is higher than established temperature,
Electrical heating elements stop heating；And when Al-alloy metal melt actual temperature is less than established temperature, electrical heating elements heater
Make, so as to ensure that Al-alloy metal melt is system established temperature in melt conditioning oven room.It can be seen that, aluminium alloy melt of the invention
Heating heat preserving method being capable of precise control melt temperature.
Additionally, because the step of aluminium alloy melt heating heat preserving method of the invention is using indirectly heat, this adds indirectly
The step of heat is that aluminium alloy melt is heated indirectly using the medial surface of the furnace lining of body of heater, so, can not only
Enough expand the volume of melt temperature adjustment furnace chamber, it is also possible to so that not having electrical heating elements in melt conditioning oven room stops scarfing cinder operation
Situation, so as to facilitate slag remove operation, lifted slag elimination efficiency.
Compared with prior art, above-mentioned aluminium alloy melt heating heat preserving method beneficial effect is：
1st, the melt in molten bath is enabled to be heated and uniformity of temperature profile.Be placed with the both sides body of heater 2 of stratie 5 with
The bottom of melt temperature adjustment furnace chamber 1 being designed in obtuse angle fully ensures that the melt in melt temperature adjustment furnace chamber 1 is heated evenly, no
Can there is obvious temperature difference on melt pool height, it is ensured that the temperature one for aluminium alloy melt is made peace stably outward.
2nd, molten bath slag is facilitated to remove operation.Because the molten molten bath of the aluminium alloy obtained using the present invention does not have upper and lower temperature difference,
It is not in the problem of the caused composition transfer of high-melting-point element crystallization and molten bath bottom slagging；
3rd, it is easily installed, changes electrical heating elements, it is safe and reliable.Because stratie 5 is disposed on inside furnace lining simultaneously
Molten bath is not inserted through body of heater 2, the completion of the inwall of body of heater 2 had both been ensure that, has effectively evaded the wind of aluminium alloy melt leakage
Danger；Facility can be provided to install and changing stratie 5 again.
4th, because stratie 5 is built-in, molten bath furnace wall complete specifications, bottom area is shunk so that slag is removed and made
Industry is more efficient, convenient.
The above is only the preferred embodiment of the present invention, need to point out it is not depart from this skill for those skilled in the art
On the premise of art scheme, some deformations and improvement can also be made, above-mentioned deformation and improved technical scheme equally should be considered as
Enter this application claims scope.
Claims (10)
1. a kind of aluminium alloy melt heating heat preserving method, including the step of heating and thermal insulation aluminium alloy melt；
Melt is heated using aluminium alloy melt heating and heat-insulating device in the step of heating and thermal insulation aluminium alloy melt
Insulation, the aluminium alloy melt heating and heat-insulating device includes body of heater, electrical heating elements, temperature controller and temperature sensor；The stove
The inside of body has cavity volume, and the cavity volume constitutes melt temperature adjustment furnace chamber；The electrical heating elements are fixedly mounted on body of heater and use
Melt heating in the melt conditioning oven room；The output end of the temperature controller passes through cable and the electrical heating elements
Interface is connected, and the signal input part of the temperature controller is connected by cable with the output interface of the temperature sensor；Institute
Temperature sensor is stated to be arranged on the body of heater and for detecting the melt temperature in the melt conditioning oven room；
It is characterized in that：The step of the step of heating and thermal insulation aluminium alloy melt, also includes indirectly heat, the indirectly heat
The step of form heating surface using the medial surface of the furnace lining of body of heater, the heating surface is used for the melt temperature adjustment furnace chamber
Interior aluminium alloy melt is heated.
2. aluminium alloy melt heating heat preserving method according to claim 1, it is characterised in that：The furnace lining is internally provided with
Heating element heater installs chamber, and the heating element heater installation cavity indoor location has the electrical heating elements, and causes the inner side of furnace lining
Face can constitute heating surface.
3. aluminium alloy melt heating heat preserving method according to claim 2, it is characterised in that：The melt temperature adjustment furnace chamber is whole
Body is in funnel type structure.
4. aluminium alloy melt heating heat preserving method according to claim 2, it is characterised in that：The electrical heating elements are electricity
Resistance heating element heater.
5. aluminium alloy melt heating heat preserving method according to claim 4, it is characterised in that：The stratie is whole
Body is string configuration；
The profile of the body of heater is in integrally up big and down small cone cylindrical structure；The furnace lining of the body of heater is internally provided with from the top down
The bar hole of extension, the upper end of the bar hole is the openend for stratie insertion, and the bar hole is along institute
The spaced multiple of circumferencial direction of body of heater is stated, each described bar hole constitutes the heating element heater and installs chamber, described to add
Grafting is provided with the stratie in thermal element installation cavity room.
6. aluminium alloy melt heating heat preserving method according to claim 5, it is characterised in that：The cone cylindrical structure is side
Tapered structure, the bar shaped pore size distribution is arranged on the relative side of any two of side's tapered structure.
7. aluminium alloy melt heating heat preserving method according to claim 5, it is characterised in that：Outside the stratie
Portion is socketed with heating element heater bushing.
8. aluminium alloy melt heating heat preserving method according to claim 5, it is characterised in that：The stratie
Bottom position of the lower end less than the melt temperature adjustment furnace chamber.
9. aluminium alloy melt heating heat preserving method according to claim 1, it is characterised in that：The furnace lining uses heat conduction system
Refractory material of the number more than 1 watt/ meter Du is obtained.
10. aluminium alloy melt heating heat preserving method according to claim 1, it is characterised in that：The temperature controller is PCC.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710288405.3A CN106914609B (en) | 2017-04-27 | 2017-04-27 | A kind of aluminium alloy melt heating heat preserving method |
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| CN201710288405.3A CN106914609B (en) | 2017-04-27 | 2017-04-27 | A kind of aluminium alloy melt heating heat preserving method |
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| CN106914609B CN106914609B (en) | 2019-06-28 |
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| CN114432968A (en) * | 2022-02-08 | 2022-05-06 | 江苏天楹等离子体科技有限公司 | Radioactive waste plasma gasification melting furnace of dumping type molten pool |
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| CN114432968A (en) * | 2022-02-08 | 2022-05-06 | 江苏天楹等离子体科技有限公司 | Radioactive waste plasma gasification melting furnace of dumping type molten pool |
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|---|---|
| CN106914609B (en) | 2019-06-28 |
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