CN107630154A - Block cast formula aluminium alloy, aluminium alloy processing method and electric hot tray - Google Patents
Block cast formula aluminium alloy, aluminium alloy processing method and electric hot tray Download PDFInfo
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- CN107630154A CN107630154A CN201710763925.5A CN201710763925A CN107630154A CN 107630154 A CN107630154 A CN 107630154A CN 201710763925 A CN201710763925 A CN 201710763925A CN 107630154 A CN107630154 A CN 107630154A
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Abstract
The invention discloses a kind of block cast formula aluminium alloy, its component and weight/mass percentage composition are：Si6.40 7.20%, Cu1.60 1.90%, Zr1.80 2.40%, Mn0.60 0.70%, Mg0.20 0.28%, Ni0.20 0.40%, Ti0.05 0.08%, Y0.002 0.005%, Pd0.04 0.10%, Ta0.11 0.14%, surplus Al；Also include inevitable impurity, wherein Zn≤0.05wt%, Sn≤0.005wt%, Pb≤0.01wt%, Cr≤0.01wt%, Cd≤0.003wt%, Mo≤0.001wt%.Block cast formula aluminum alloy materials mouldability in the present invention is good, good heat conduction effect, oxide skin and impurity are not likely to produce in its casting process, can with steelwork is extraordinary fits together, gap will not be produced after the completion of electric hot tray casting, the defects of so as to overcome in the prior art.Use block cast formula structure using electric hot tray made of aluminum alloy materials in the present invention, the manufacturing cycle is short, cost is low, in the absence of sealing and gap the problem of, be adapted to be widely used in the field that all kinds of needs carry out accurate temperature control.
Description
Technical field
The invention belongs to aluminum alloy materials field, and in particular to a kind of block cast formula aluminium alloy, aluminium alloy processing method and should
Electric hot tray made of aluminium alloy.
Background technology
Aluminium alloy is a kind of non-ferrous metal structural material being most widely used in industry, have density is low, intensity than it is high,
The advantages of plasticity is good, good conductivity, good corrosion stability, it is adapted to be processed into various section bars.Just because of with thermal conductivity it is high the characteristics of,
In heating, there is huge use value in terms of cooling, thus applied in many industries to heater, cooler uses
Prepared by aluminium alloy, such as the electric hot tray of the heater in semicon industry, automobile radiators, computer fan and various uses
Deng.
With the development need of all trades and professions, requirement to alumiaum article also more and more higher.Such as household electrical appliances, the aluminum of chemical industry
Electric hot tray, it is many to its heating uniformity, stability, the rate of heat addition, security etc. to require more and more higher.Above-mentioned electric hot tray
Also referred to as heating dish, in the prior art aluminum electric hot tray use split-type structural more, be to separate heating wire and its fitting recess
It is machined out, is then assembled, such processing mode has processing generation fit-up gap and easily causes heat conduction barrier film, processing
The problem of cycle is long, cost is high, assembly station is more, and traditional aluminum electric hot tray outer layer needs to carry out the sealing of completeness,
The service life of extreme influence electric hot tray if seal failure.Due to the limitation of above-mentioned conventional process, in the prior art
Electric hot tray can not expire completely when the industrial circle for needing to finely control heating process applied to chemical industry, cosmetics etc.
Sufficient demand.
The problem of existing for the electric hot tray of prior art, has researcher to propose the knot that electric hot tray is designed as to block cast formula
Structure, i.e., heating wire is directly cast into aluminium base body disc, can not only shorten the manufacturing cycle of electric hot tray reduces its manufacturing cost, and
And due to the structure using block cast formula, just avoid the seal request in prior art electric hot tray and seal improper produced
The problem of raw fit-up gap, kill two birds with one stone.During actual processing, although the processing technology of block cast formula can be electric hot tray
Construction and processing technology bring a certain degree of improvement, but aluminium alloy uniformity, stomata lack in block cast formula process
The problems such as sunken, just especially highlights, and is that processing technology is improved although tracing it to its cause, due to the technique pair of block cast formula
Castability requires higher, and otherwise the uniformity of electric hot tray is unable to reach requirement, meanwhile, it is by galvanic couple in the technique of block cast formula
Directly cast from casting, the contact binding face between raw material of aluminum alloy and galvanic couple should closely continuously, it is impossible to exist any impurity,
The defects of dirt, otherwise just produce and be similar to traditional processing method identical clearance issues.
The content of the invention
It is existing for solving that two kinds of Technology Ways are proposed simultaneously in order to solve the deficiencies in the prior art, in the present invention
The problem of processing of aluminium alloy electric hot plate can not be carried out in technology using block cast formula technique.First, to suitable for block cast in the present invention
Formula electric hot tray processing aluminium alloy stock component improved, in the present invention, be called block cast formula aluminium alloy, make its with it is whole
The processing technology of casting formula is adapted.Second, the processing technology in the present invention for block cast formula aluminium alloy is optimized, make its stream
Dynamic property is more preferable, bath surface can be higher, and the impurity in aluminium alloy is removed by special processing process, reaches purification alloy raw material
Effect.Block cast formula aluminum alloy materials mouldability in the present invention is good, good heat conduction effect, and oxygen is not likely to produce in its casting process
Change skin and impurity, can with steelwork is extraordinary fits together, will not produce gap after the completion of electric hot tray casting, so as to gram
The defects of having taken in the prior art.Block cast formula structure, manufacture week are used using electric hot tray made of aluminum alloy materials in the present invention
Phase is short, cost is low, in the absence of sealing and gap the problem of, be adapted to be widely used in the field that all kinds of needs carry out accurate temperature control.
The technique effect of the invention to be reached is realized by following scheme：
The block cast formula aluminium alloy provided in the present invention, its component and weight/mass percentage composition are：
Si 6.40-7.20%
Cu 1.60-1.90%
Zr 1.80-2.40%
Mn 0.60-0.70%
Mg 0.20-0.28%
Ni 0.20-0.40%
Ti 0.05-0.08%
Y 0.002-0.005%
Pd 0.04-0.10%
Ta 0.11-0.14%
Surplus is Al；
Also include inevitable impurity, wherein Zn≤0.05wt%, Sn≤0.005wt%, Pb≤0.01wt%, Cr≤
0.01wt%, Cd≤0.003wt%, Mo≤0.001wt%.
Further, the Zr component raw materials in the aluminium alloy are using non-separating hafnium in the process for preparing pure zirconium
The zirconium raw material of element.
Further, the weight/mass percentage composition of the Si components is 6.8-7.0%.
Further, the weight/mass percentage composition of the Cu components is 1.80-1.85%.
Further, the impurity content weight/mass percentage composition is less than 0.3%.
A kind of method for processing above-mentioned aluminium alloy is also provided in the present invention, comprised the following steps：
S01：Each raw material are weighed according to alloy component content formula, aluminum metal raw material is first put into melting is carried out in smelting furnace,
Cu and Zr raw materials are put into again after aluminum metal raw material is completely melt, carry out sufficient electromagnetic agitation, then put into other doping again
Element, carry out sufficient electromagnetic agitation, skim；Melting holding temperature is 720-740 DEG C, smelting time 8-12h；
S02：The melt obtained in S01 is transferred in holding furnace and carries out insulation melting, argon gas is passed through and accounts for alloy gross mass
0.0005-0.0008% rare earth oxide；Insulation in-furnace temperature is maintained at stable 720-730 DEG C, and argon gas is from insulation furnace bottom
It is blown upward；
S03：Filtered after insulation melting 1-2h using the ceramic filter that pore size filter is 10-20ppi, then utilize filtering
The filtrate obtained afterwards carries out aluminium alloy casting.
Further, the heating rate of fusion process is in S01：Aluminum metal raw material heating rate in fusion process is 5-
6 DEG C/min, it is warming up to after 600-650 DEG C, puts into Cu and Zr raw materials, be then warming up to 700 DEG C with 2-3 DEG C/min speed, stir
Other doped chemicals are put into after mixing, 720-740 DEG C is warming up to 1-2 DEG C/min speed, is incubated melting.
Further, S02 middle rare earths are one or more kinds of groups in yittrium oxide, cerium oxide or praseodymium oxide
Close.
A kind of electric hot tray provided in the present invention, raw material is used as by the use of the block cast formula aluminium alloy in the present invention.And utilize upper
Block cast formula aluminium alloy processing method is stated to be made.
Further, Homogenization Treatments are carried out after the electric hot tray casting, concrete processing procedure is：By casting
Electric hot tray afterwards is placed in holding furnace, is warming up to 250-320 DEG C with 8-12 DEG C/min of heating rate, is incubated 6-12h, then natural
Cool to after 200-220 DEG C, be incubated 1-2h, natural cooling.
The present invention has advantages below：
1st, the aluminium alloy stock component processed suitable for block cast formula electric hot tray is improved in the present invention, in the present invention,
Block cast formula aluminium alloy is called, it is adapted with the processing technology of block cast formula.
2nd, it is optimized in the present invention for the processing technology of block cast formula aluminium alloy, makes that its mobility is more preferable, melt table
Face can be higher, and removes the impurity in aluminium alloy by special processing process, reaches the effect of purification alloy raw material.
3rd, in the present invention block cast formula aluminum alloy materials mouldability is good, good heat conduction effect, be not easy to produce in its casting process
Raw oxide skin and impurity, can with steelwork is extraordinary fits together, will not produce gap after the completion of electric hot tray casting, from
And the defects of overcoming in the prior art.Block cast formula structure is used using electric hot tray made of aluminum alloy materials in the present invention, is made
Make the cycle is short, cost is low, in the absence of sealing and gap the problem of, be adapted to be widely used in the neck that all kinds of needs carry out accurate temperature control
Domain.
Embodiment
With reference to embodiment, the present invention will be described in detail.
Block cast formula aluminium alloy in the present embodiment carries out proportioning manufacture according to component in following table and weight/mass percentage composition（Form
Middle data are the weight/mass percentage composition of corresponding component）.Surplus is Al in following table formula, is also included in aluminium alloy inevitably miscellaneous
Matter, wherein Zn≤0.05wt%, Sn≤0.005wt%, Pb≤0.01wt%, Cr≤0.01wt%, Cd≤0.003wt%, Mo≤
0.001wt%.Zn, Sn, Pb, Cr, Cd, Mo are the impurity most often occurred in aluminium alloy manufacturing process in the present embodiment, need to strictly be controlled
Impurity content processed, impurity content is controlled to account for less than the 0.3% of alloy gross mass in the present embodiment.It is in practice, it has been found that once miscellaneous
Matter content exceedes the mass percent, then in electric hot tray casting process, aluminium alloy easily produces attachment on steel galvanic couple surface,
Gap is caused, influences the use of electric hot tray.To find out its cause, impurity content is too high easily to cause molten aluminium alloy in fusion process
Entropy is too high, so as to influence its shaping and crystallization.
All raw materials used in aluminium alloy preparation process are all marketable material, and wherein Zr component raw materials are using preparation
The zirconium raw material of non-separating hafnium element in the process of pure zirconium, i.e., some Hf originals are adulterated in the Zr raw materials in the present embodiment
Son.Hafnium element is one of element common in zirconium ore, and hafnium element is to be replaced in the form of perfect isomorphism in zirconium ore
Zr element forms zircon-hafnon solid solution.During pure zirconium metal is prepared, often hafnium element to be separated, and separate
Both are extremely difficult, and the cost that also result in high purity zirconium metal is very high.Find in the present invention, compared with using the high gold of purity
Belong to zirconium, the aluminium alloy prepared using the zirconium raw material of non-separating hafnium element in the process for preparing pure zirconium is more preferable, not only reduces
Cost, and to aluminium alloy, homogeneity has extraordinary facilitation in fusion process.The auxiliary element added is mutual
The melt with high entropy is cooperatively formed, not only mobility is more preferable, and bath surface can be higher, enables aluminum alloy to liquation in block cast
During be more prone to the full whole die cavity of filling, with galvanic couple surface close proximity.
The processing of aluminium alloy is carried out according to the proportioning of above-mentioned aluminium alloy, processing step is mainly：
S01：Each raw material are weighed according to alloy component content formula, aluminum metal raw material is first put into melting is carried out in smelting furnace,
Cu and Zr raw materials are put into again after aluminum metal raw material is completely melt, carry out sufficient electromagnetic agitation, then put into other doping again
Element, carry out sufficient electromagnetic agitation, skim；Melting holding temperature is 720-740 DEG C, smelting time 8-12h.
Cu and Zr metals and aluminum melt compatibility are relatively good, therefore are first fed intake, and it is put into again after it is well mixed
The raw material of his residue carries out melting.The time of melting insulation is adjusted according to aluminium alloy formula in embodiment, in general, mixes
Miscellaneous element institute accounting is more, and the temperature of melting insulation is higher, and the melting holding temperature used in the present embodiment is preferable over 725-
In the range of 728 DEG C, it is all normal value to be floated in the temperature range.
The heating rate of fusion process is：Aluminum metal raw material heating rate in fusion process is 5-6 DEG C/min, is warming up to
After 600 DEG C, Cu and Zr raw materials are put into, then 700 DEG C is warming up to 2 DEG C/min speed, other doped chemicals is put into after stirring,
725-728 DEG C is warming up to 1.5 DEG C/min speed, is incubated melting.Consider that smelting efficiency need to quickly be entered the early stage of fusion process
Row melting aluminum metal, because the compatibility of Cu, Zr and aluminum metal is good, therefore temperature-rise period can be accelerated, and need to heat up after three's fusing
Follow-up melting is carried out, while heating rate is unsuitable too fast, and the smelting time of abundance is provided for doped chemical, easily forms stabilization
Homogeneous phase.
S02：The melt obtained in S01 is transferred in holding furnace and carries out insulation melting, argon gas is passed through and accounts for alloy gross mass
0.0005-0.0008% rare earth oxide, insulation in-furnace temperature are maintained at stable 725-728 DEG C, and argon gas is from insulation furnace bottom
It is blown upward.
Because doped chemical is more in the present invention, therefore the elements such as substantial amounts of impurity and oxygen, nitrogen are readily incorporated, need to be miscellaneous by these
Prime element is removed, and the method used in the present invention is carried out for the rare earth oxide precipitation method using rare earth oxide and above-mentioned impurity
Reaction generation sediment, then refilters removal.Selected rare earth oxide is in yittrium oxide, cerium oxide or praseodymium oxide
One or more kinds of combinations.The addition of rare earth oxide is relevant with impurity level introduced in fusion process, in embodiment
Operating process in be added according to actual melting situation, after being added on a small quantity stirring regard situation caused by solid impurity
Depending on whether need to continue to add.
S03：Filtered using the ceramic filter that pore size filter is 10-20ppi after insulation melting 2h, then utilized
The filtrate obtained after filter carries out aluminium alloy casting.It is used herein as inert ceramic filter to be filtered, is not considering production effect
In the case of rate, the method for multiple filtration can be used, i.e., it is more to be filtered using the ceramic filter of several layers of different pore size filters,
The preferred zirconia ceramics filter of material of ceramic filter.
Aluminium alloy smelting temperature in the present embodiment is slightly above aluminium alloy smelting temperature of the prior art, traces it to its cause
Alloying element species is more, it is necessary to which higher temperature and more heat energy can make each element phase in aluminium alloy in the present invention
Mutually fusion forms homogeneous phase body, and high smelting temperature is also beneficial to the crystallisation by cooling of follow-up aluminium alloy.
After aluminium alloy smelting completion of processing in embodiment, aluminium alloy is cast as completely by the way of integral die-cast
2.85kg electric hot tray, Homogenization Treatments is carried out after electric hot tray casting, concrete processing procedure is：By the electricity after casting
Hot plate is placed in holding furnace, is warming up to 265 DEG C with 10 DEG C/min of heating rate, is incubated 7h, then natural cooling is cooled to 210 DEG C
Afterwards, 1h, natural cooling are incubated.
Compare with the embodiment in the present invention, utilized and embodiment identical block cast using ZL106, ZL114A aluminium alloy
Same 2.85kg electric hot tray is made in technique, comparative example 1, comparative example 2 is designated as respectively, below between embodiment and comparative example
Comparative result.
As can be seen from the comparison result, the block cast formula aluminium alloy electric hot plate uniformity and mouldability in the embodiment of the present invention
Get well, especially embodiment 6-22, be more uniformly distributed on appearance clean and tidy.And conventional ZL106, ZL114A aluminium alloy be then difficult into
The preparation of row block cast formula electric hot tray.
It can be seen that block cast formula aluminum alloy materials mouldability in the present invention is good, good heat conduction effect from embodiment result,
Be not likely to produce oxide skin and impurity in its casting process, can with steelwork is extraordinary fits together, electric hot tray has been cast
Gap will not be produced after, the defects of so as to overcome in the prior art.Utilize electric heating made of aluminum alloy materials in the present invention
Disk uses block cast formula structure, the manufacturing cycle is short, cost is low, in the absence of sealing and gap the problem of, be adapted to be widely used in all kinds of
Need to carry out the field of accurate temperature control.
It is last it should be noted that above example is only illustrating the technical scheme of the embodiment of the present invention rather than it is entered
Row limitation, although the embodiment of the present invention is described in detail with reference to preferred embodiment, one of ordinary skill in the art
It should be understood that can still be modified to the technical scheme of the embodiment of the present invention or equivalent substitution, and these modifications or wait
The scope of amended technical scheme disengaging technical scheme of the embodiment of the present invention can not also be made with replacement.
Claims (10)
1. a kind of block cast formula aluminium alloy, it is characterised in that component and weight/mass percentage composition are：
Si 6.40-7.20%
Cu 1.60-1.90%
Zr 1.80-2.40%
Mn 0.60-0.70%
Mg 0.20-0.28%
Ni 0.20-0.40%
Ti 0.05-0.08%
Y 0.002-0.005%
Pd 0.04-0.10%
Ta 0.11-0.14%
Surplus is Al；
Also include inevitable impurity, wherein Zn≤0.05wt%, Sn≤0.005wt%, Pb≤0.01wt%, Cr≤
0.01wt%, Cd≤0.003wt%, Mo≤0.001wt%.
2. block cast formula aluminium alloy as claimed in claim 1, it is characterised in that：Zr component raw materials in the aluminium alloy using
Prepare the zirconium raw material of non-separating hafnium element in the process of pure zirconium.
3. block cast formula aluminium alloy as claimed in claim 1, it is characterised in that：The weight/mass percentage composition of the Si components is 6.8-
7.0%。
4. block cast formula aluminium alloy as claimed in claim 1, it is characterised in that：The weight/mass percentage composition of the Cu components is 1.80-
1.85%。
5. block cast formula aluminium alloy as claimed in claim 1, it is characterised in that：The impurity content weight/mass percentage composition is less than
0.3%。
A kind of 6. method for processing the aluminium alloy as described in claim 1-5 is any, it is characterised in that comprise the following steps：
S01：Each raw material are weighed according to alloy component content formula, aluminum metal raw material is first put into melting is carried out in smelting furnace,
Cu and Zr raw materials are put into again after aluminum metal raw material is completely melt, carry out sufficient electromagnetic agitation, then put into other doping again
Element, carry out sufficient electromagnetic agitation, skim；Melting holding temperature is 720-740 DEG C, smelting time 8-12h；
S02：The melt obtained in S01 is transferred in holding furnace and carries out insulation melting, argon gas is passed through and accounts for alloy gross mass
0.0005-0.0008% rare earth oxide；Insulation in-furnace temperature is maintained at stable 720-730 DEG C, and argon gas is from insulation furnace bottom
It is blown upward；
S03：Filtered after insulation melting 1-2h using the ceramic filter that pore size filter is 10-20ppi, then utilize filtering
The filtrate obtained afterwards carries out aluminium alloy casting.
7. aluminium alloy processing method as claimed in claim 6, it is characterised in that：The heating rate of fusion process is in S01：Aluminium gold
It is 5-6 DEG C/min to belong to raw material heating rate in fusion process, is warming up to after 600-650 DEG C, puts into Cu and Zr raw materials, then
700 DEG C are warming up to 2-3 DEG C/min speed, other doped chemicals are put into after stirring, 720- is warming up to 1-2 DEG C/min speed
740 DEG C, it is incubated melting.
8. aluminium alloy processing method as claimed in claim 6, it is characterised in that：S02 middle rare earths are yittrium oxide, cerium oxide
Or one or more kinds of combinations in praseodymium oxide.
A kind of 9. electric hot tray, it is characterised in that：The electric hot tray be using as described in claim 1-5 is any aluminium alloy cast and
Into；The processing method of the aluminium alloy such as claim 6-8 is any described.
10. electric hot tray as claimed in claim 9, it is characterised in that：Homogenization Treatments are carried out after the electric hot tray casting, are had
Body processing procedure is：Electric hot tray after casting is placed in holding furnace, 250- is warming up to 8-12 DEG C/min of heating rate
320 DEG C, 6-12h is incubated, after then natural cooling is cooled to 200-220 DEG C, is incubated 1-2h, natural cooling.
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| CN108315615A (en) * | 2018-03-27 | 2018-07-24 | 中南大学 | A kind of rare earth oxide strengthens powder metallurgy Al-Cu-Mg alloy and preparation method thereof |
| CN108588511A (en) * | 2018-06-15 | 2018-09-28 | 南通富尔特金属制品有限公司 | A kind of processing method of block cast formula aluminum alloy materials |
| CN108707788A (en) * | 2018-06-15 | 2018-10-26 | 南通富尔特金属制品有限公司 | A kind of block cast formula aluminum alloy materials |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108315615A (en) * | 2018-03-27 | 2018-07-24 | 中南大学 | A kind of rare earth oxide strengthens powder metallurgy Al-Cu-Mg alloy and preparation method thereof |
| CN108315615B (en) * | 2018-03-27 | 2019-12-24 | 中南大学 | Rare earth element oxide reinforced powder metallurgy Al-Cu-Mg alloy and preparation method thereof |
| CN108588511A (en) * | 2018-06-15 | 2018-09-28 | 南通富尔特金属制品有限公司 | A kind of processing method of block cast formula aluminum alloy materials |
| CN108707788A (en) * | 2018-06-15 | 2018-10-26 | 南通富尔特金属制品有限公司 | A kind of block cast formula aluminum alloy materials |
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Application publication date: 20180126 |