CN103589919B - A kind of Modification Manners of alterant of R14 aluminium alloy - Google Patents
A kind of Modification Manners of alterant of R14 aluminium alloy Download PDFInfo
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Abstract
A Modification Manners for the alterant of R14 aluminium alloy, the present invention relates to the Modification Manners of alterant.The present invention will solve the existence of existing alterant makes the plate primary silicon of R14 aluminium alloy and minute hand lamellar eutectic silicon organize thick, makes R14 Mechanical Properties of Aluminum Alloys low, produces toxic gas, the problem of contaminate environment.The alterant of a kind of R14 aluminium alloy of the present invention is made up of Cu-14P and Al-10RE, the Modification Manners of the alterant of a kind of R14 aluminium alloy of the present invention: one, melting; Two, refining; Three, Cu-14P is added; Four, Al-10RE is added; Five, cast and ingot casting, namely obtains the R14 aluminium alloy after going bad.Advantage: the plate primary silicon and the minute hand lamellar eutectic silicon structure refinement that make R14 aluminium alloy, alloy mechanical property improves, nontoxic.The present invention is mainly used in a kind of alterant and Modification Manners thereof of R14 aluminium alloy.
Description
Technical field
The present invention relates to the Modification Manners of alterant.
Background technology
R14 aluminium alloy is a kind of hypereutectic type Al-Si alloy, has the advantages such as the thermal conductivity that thermal expansivity is little, proportion is low, wear resistance and corrosion resistance is good and good, is widely used in Die Casting Industry.In not rotten R14 aluminum alloy organization, primary silicon particle is very thick, and eutectic silicon is minute hand shape, causes alloy mechanical performance to decline, and tensile strength is 200MPa ~ 220MP, and unit elongation is 0.5% ~ 0.8%, and silicon phase morphology and distribution also have impact to performance in addition.Therefore, Metamorphism treatment must be carried out to R14 alloy, improve primary silicon and Morphology of Eutectic Silicon in Al-Si Foundry Alloys and refinement, thus improve the mechanical property of R14 alloy.
Have metamorphic unit to have P, S, As etc. to the primary silicon in R14 aluminium alloy, wherein, industrial most widely used be P alterant.Adding of trace P, primary silicon size can be made to reduce, be evenly distributed, become regular shape from the irregular shape such as en plaque or cerioid.Many kinds are had, as red phosphorus, microcosmic salt and phosphorous master alloy etc. containing P alterant.Add a small amount of red phosphorus or microcosmic salt just has good modification effect, and cost is low, addition manner is simple.But a large amount of toxic gas can be produced in metamorphic process, Heavy environmental pollution.
In sum, existing alterant exists makes the plate primary silicon of R14 aluminium alloy and minute hand lamellar eutectic silicon organize thick, makes R14 Mechanical Properties of Aluminum Alloys low, tensile strength is 200MPa ~ 220MPa, unit elongation is 0.5% ~ 0.8%, produces toxic gas, the problem of contaminate environment.
Summary of the invention
The present invention will solve the existence of existing alterant makes the plate primary silicon of R14 aluminium alloy and minute hand lamellar eutectic silicon organize thick, make R14 Mechanical Properties of Aluminum Alloys low, produce toxic gas, the problem of contaminate environment, and a kind of alterant and Modification Manners thereof of R14 aluminium alloy are provided.
The alterant of a kind of R14 aluminium alloy of the present invention, is characterized in that a kind of alterant of R14 aluminium alloy is made up of Cu-14P and Al-10RE; Described R14 aluminium alloy and the mass ratio of Cu-14P are 1:(0.2 ~ 0.86); Described R14 aluminium alloy and the mass ratio of Al-10RE are 1:(2 ~ 13).
The Modification Manners of the alterant of a kind of R14 aluminium alloy of the present invention carries out according to the following steps:
One, melting: at smelting temperature is 720 DEG C ~ 750 DEG C, melts R14 aluminium alloy and stirs, obtain R14 aluminium alloy melt;
Two, refining: at temperature is 720 DEG C ~ 750 DEG C, hexachloroethane is divided and adds in R14 aluminium alloy melt 3 times ~ 5 times, stir, then refining insulation 10min ~ 20min at temperature is 720 DEG C ~ 750 DEG C, finally remove the scum silica frost on R14 aluminium alloy melt surface, obtain the R14 aluminium alloy melt after refining;
The mass ratio of the R14 aluminium alloy described in step one and the hexachloroethane described in step 2 is 1:(0.006 ~ 0.01);
Three, Cu-14P is added: at smelting temperature is 760 DEG C ~ 850 DEG C, Cu-14P is added in the R14 aluminium alloy melt after refining, stir, and be incubated 5min ~ 30min at smelting temperature is 760 DEG C ~ 850 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P;
The mass ratio of the R14 aluminium alloy described in step one and the Cu-14P described in step 3 is 1:(0.2 ~ 0.86);
Four, Al-10RE is added: smelting temperature is cooled to 730 DEG C ~ 830 DEG C from 760 DEG C ~ 850 DEG C, and at smelting temperature is 730 DEG C ~ 830 DEG C, Al-10RE is added in the R14 aluminium alloy melt adding Cu-14P, stir, and 5min ~ 30min is incubated at smelting temperature is 730 DEG C ~ 830 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P and Al-10RE;
The mass ratio of the R14 aluminium alloy described in step one and the Al-10RE described in step 4 is 1:(2 ~ 13);
Five, cast and ingot casting: casting mold is preheating to 200 DEG C ~ 250 DEG C, be then the R14 aluminium alloy melt cast adding Cu-14P and Al-10RE of 700 DEG C ~ 740 DEG C by temperature, ingot casting, namely obtains the R14 aluminium alloy after going bad.
The invention has the beneficial effects as follows: (1) adopts Modification Manners of the present invention, thick plate-like primary silicon and the refinement of minute hand lamellar eutectic silicon in R14 alloy structure can be made, rare earth element not only makes the eutectic silicon chip of faller gill shape be refined into rod-short or granular, but also the size of primary silicon is slightly reduced, in addition rare earth can form the intermetallic compound containing rare earth in aluminium liquid, when melt crystallization as external crystallization nucleus, thus make the structure refinement of alloy, so rare earth element is (as La, Ce etc.) be the excellent alterant of casting Al-Si alloy, it is applicable to hypoeutectic, eutectic, the Metamorphism treatment of Hypereutectic Al-Si Alloy, (2) improve alloy mechanical property, tensile strength is 260MPa ~ 275MPa, and unit elongation is 2% ~ 2.4%, (3) nontoxic, technique is simple: advantage of the present invention directly have employed Al-10RE master alloy conventional in industry, alterant is easy to obtain, without the need to special process preparation synthesis, provide cost savings, technique is simple, and using method is easy, do not need to increase special utility appliance, industrial operation is convenient in use procedure.
The present invention is used for a kind of alterant and Modification Manners thereof of R14 aluminium alloy.
Accompanying drawing explanation
Fig. 1 is that R14 aluminium alloy is without metallographic structure photo time rotten;
Fig. 2 is the metallographic structure photo of the R14 alloy that embodiment one method goes bad;
Fig. 3 is the metallographic structure photo of the R14 alloy that embodiment two method goes bad;
Fig. 4 is the metallographic structure photo of the R14 alloy that embodiment three method goes bad.
Embodiment
Embodiment one: the alterant of a kind of R14 aluminium alloy of present embodiment, is characterized in that a kind of alterant of R14 aluminium alloy is made up of Cu-14P and Al-10RE; Described R14 aluminium alloy and the mass ratio of Cu-14P are 1:(0.2 ~ 0.86); Described R14 aluminium alloy and the mass ratio of Al-10RE are 1:(2 ~ 13).
Embodiment two: the Modification Manners of the alterant of a kind of R14 aluminium alloy described in present embodiment, is characterized in that a kind of Modification Manners of alterant of R14 aluminium alloy carries out according to the following steps:
One, melting: at smelting temperature is 720 DEG C ~ 750 DEG C, melts R14 aluminium alloy and stirs, obtain R14 aluminium alloy melt;
Two, refining: at temperature is 720 DEG C ~ 750 DEG C, hexachloroethane is divided and adds in R14 aluminium alloy melt 3 times ~ 5 times, stir, then refining insulation 10min ~ 20min at temperature is 720 DEG C ~ 750 DEG C, finally remove the scum silica frost on R14 aluminium alloy melt surface, obtain the R14 aluminium alloy melt after refining;
The mass ratio of the R14 aluminium alloy described in step one and the hexachloroethane described in step 2 is 1:(0.006 ~ 0.01);
Three, Cu-14P is added: at smelting temperature is 760 DEG C ~ 850 DEG C, Cu-14P is added in the R14 aluminium alloy melt after refining, stir, and be incubated 5min ~ 30min at smelting temperature is 760 DEG C ~ 850 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P;
The mass ratio of the R14 aluminium alloy described in step one and the Cu-14P described in step 3 is 1:(0.2 ~ 0.86);
Four, Al-10RE is added: smelting temperature is cooled to 730 DEG C ~ 830 DEG C from 760 DEG C ~ 850 DEG C, and at smelting temperature is 730 DEG C ~ 830 DEG C, Al-10RE is added in the R14 aluminium alloy melt adding Cu-14P, stir, and 5min ~ 30min is incubated at smelting temperature is 730 DEG C ~ 830 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P and Al-10RE;
The mass ratio of the R14 aluminium alloy described in step one and the Al-10RE described in step 4 is 1:(2 ~ 13);
Five, cast and ingot casting: casting mold is preheating to 200 DEG C ~ 250 DEG C, be then the R14 aluminium alloy melt cast adding Cu-14P and Al-10RE of 700 DEG C ~ 740 DEG C by temperature, ingot casting, namely obtains the R14 aluminium alloy after going bad.
In this embodiment step 2, hexachloroethane uses as refining agent, and object is gas in removing R14 aluminium alloy melt and impurity.
The beneficial effect of present embodiment is: (1) adopts Modification Manners of the present invention, thick plate-like primary silicon and the refinement of minute hand lamellar eutectic silicon in R14 alloy structure can be made, rare earth element not only makes the eutectic silicon chip of faller gill shape be refined into rod-short or granular, but also the size of primary silicon is slightly reduced, in addition rare earth can form the intermetallic compound containing rare earth in aluminium liquid, when melt crystallization as external crystallization nucleus, thus make the structure refinement of alloy, so rare earth element is (as La, Ce etc.) be the excellent alterant of casting Al-Si alloy, it is applicable to hypoeutectic, eutectic, the Metamorphism treatment of Hypereutectic Al-Si Alloy, (2) improve alloy mechanical property, tensile strength is 260MPa ~ 275MPa, and unit elongation is 2% ~ 2.4%, (3) nontoxic, technique is simple: advantage of the present invention directly have employed Al-10RE master alloy conventional in industry, alterant is easy to obtain, without the need to special process preparation synthesis, provide cost savings, technique is simple, and using method is easy, do not need to increase special utility appliance, industrial operation is convenient in use procedure.
Embodiment three: present embodiment and embodiment two unlike: in step one at smelting temperature is 720 DEG C ~ 740 DEG C, R14 aluminium alloy is melted and stirs, obtain R14 aluminium alloy melt.Other is identical with embodiment two.
Embodiment four: one of present embodiment and embodiment two or three are 1:(0.006 ~ 0.009 unlike the mass ratio of the hexachloroethane described in: the R14 aluminium alloy described in step one and step 2).Other is identical with embodiment two or three.
Embodiment five: one of present embodiment and embodiment two to four unlike: in step 2 at temperature is 720 DEG C ~ 740 DEG C, hexachloroethane is divided and adds in R14 aluminium alloy melt 3 times ~ 4 times, stir, then refining insulation 10min ~ 15min at temperature is 720 DEG C ~ 740 DEG C, finally remove the scum silica frost on R14 aluminium alloy melt surface, obtain the R14 aluminium alloy melt after refining.Other is identical with embodiment two to four.
Embodiment six: one of present embodiment and embodiment two to five are 1:(0.28 ~ 0.86 unlike the mass ratio of the Cu-14P described in: the R14 aluminium alloy described in step one and step 3).Other is identical with embodiment two to five.
Embodiment seven: one of present embodiment and embodiment two to six unlike: in step 3 at smelting temperature is 760 DEG C ~ 840 DEG C, Cu-14P is added in the R14 aluminium alloy melt after refining, stir, and 5min ~ 25min is incubated at smelting temperature is 760 DEG C ~ 840 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P.Other is identical with embodiment two to six.
Embodiment eight: one of present embodiment and embodiment two to seven are 1:(2 ~ 12 unlike the mass ratio of the Al-10RE described in: the R14 aluminium alloy described in step one and step 4).Other is identical with embodiment two to seven.
Embodiment nine: one of present embodiment and embodiment two to eight unlike: in step 4, smelting temperature is cooled to 730 DEG C ~ 820 DEG C from 760 DEG C ~ 840 DEG C, and at smelting temperature is 730 DEG C ~ 820 DEG C, Al-10RE is added in the R14 aluminium alloy melt adding Cu-14P, stir, and 5min ~ 25min is incubated at smelting temperature is 730 DEG C ~ 820 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P and Al-10RE.Other is identical with embodiment two to eight.
Embodiment ten: one of present embodiment and embodiment two to nine unlike: casting mold is preheating to 200 DEG C ~ 240 DEG C in step 5, then be the R14 aluminium alloy melt cast adding Cu-14P and Al-10RE of 700 DEG C ~ 740 DEG C by temperature, ingot casting, namely obtains the R14 aluminium alloy after going bad.Other is identical with embodiment two to nine.
Following examples are adopted to verify beneficial effect of the present invention:
Embodiment one:
The Modification Manners of the alterant of a kind of R14 aluminium alloy described in the present embodiment, specifically carries out according to following steps:
One, melting: at smelting temperature is 740 DEG C, melts 1000gR14 aluminium alloy and stirs, obtain R14 aluminium alloy melt;
Two, refining: at temperature is 740 DEG C, 7.5g hexachloroethane is divided and adds in R14 aluminium alloy melt for 3 times, stir, then refining insulation 10min at temperature is 740 DEG C, finally remove the scum silica frost on R14 aluminium alloy melt surface, obtain the R14 aluminium alloy melt after refining;
Three, add Cu-14P: at smelting temperature is 780 DEG C, in the R14 aluminium alloy melt after refining, add 0.43gCu-14P, stir, and be incubated 25min at smelting temperature is 780 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P;
Four, Al-10RE is added: smelting temperature is cooled to 760 DEG C from 780 DEG C, and at smelting temperature is 760 DEG C, 40gAl-10RE is added in the R14 aluminium alloy melt adding Cu-14P, stir, and 25min is incubated at smelting temperature is 760 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P and Al-10RE;
Five, casting mold is preheating to 200 DEG C, be then the R14 aluminium alloy melt cast adding Cu-14P and Al-10RE of 720 DEG C by temperature, ingot casting, namely obtains the R14 aluminium alloy after going bad.
The metallographic structure photo of the R14 alloy that embodiment one method goes bad as shown in Figure 2, R14 aluminium alloy without metallographic structure photo time rotten as shown in Figure 1, known with R14 aluminium alloy without compared with metallographic structure time rotten, the micro-metallographic structure of the R14 aluminium alloy after Metamorphism treatment there occurs obvious change, primary silicon size is reduced to 23 μm, corner angle are round and smooth, and Eutectic Silicon in Al-Si Cast Alloys changes corynebacterium and particulate state into by needle-like.
The R14 alloy that the present embodiment method goes bad is known through electronic universal material testing machine test, and tensile strength brings up to 263Mpa by the 212MPa of starting ingot.
The R14 alloy that the present embodiment method goes bad is known through electronic universal material testing machine test, and unit elongation brings up to 2.2% by 0.7% of starting materials.
Embodiment two:
The Modification Manners of the alterant of a kind of R14 aluminium alloy described in the present embodiment, specifically carries out according to following steps:
One, melting: at smelting temperature is 740 DEG C, melts 1000gR14 aluminium alloy and stirs, obtain R14 aluminium alloy melt;
Two, refining: at temperature is 740 DEG C, 7.5g hexachloroethane is divided and adds in R14 aluminium alloy melt for 3 times, stir, then refining insulation 10min at temperature is 740 DEG C, finally remove the scum silica frost on R14 aluminium alloy melt surface, obtain the R14 aluminium alloy melt after refining;
Three, add Cu-14P: at smelting temperature is 800 DEG C, in the R14 aluminium alloy melt after refining, add 0.57gCu-14P, stir, and be incubated 20min at smelting temperature is 800 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P;
Four, Al-10RE is added: smelting temperature is cooled to 780 DEG C from 800 DEG C, and at smelting temperature is 780 DEG C, 60gAl-10RE is added in the R14 aluminium alloy melt adding Cu-14P, stir, and 20min is incubated at smelting temperature is 780 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P and Al-10RE;
Five, casting mold is preheating to 200 DEG C, be then the R14 aluminium alloy melt cast adding Cu-14P and Al-10RE of 720 DEG C by temperature, ingot casting, namely obtains the R14 aluminium alloy after going bad.
The metallographic structure photo of the R14 alloy that embodiment two method goes bad as shown in Figure 3, R14 aluminium alloy without metallographic structure photo time rotten as shown in Figure 1, known with R14 aluminium alloy without compared with metallographic structure time rotten, the micro-metallographic structure of the R14 aluminium alloy after Metamorphism treatment there occurs obvious change, primary silicon size is reduced to 23 μm, corner angle are round and smooth, and Eutectic Silicon in Al-Si Cast Alloys changes corynebacterium and particulate state into by needle-like.
The R14 alloy that the present embodiment method goes bad is known through electronic universal material testing machine test, and tensile strength brings up to 271Mpa by the 212MPa of starting ingot.
The R14 alloy that the present embodiment method goes bad is known through electronic universal material testing machine test, and unit elongation brings up to 2.3% by 0.7% of starting materials.
Embodiment three:
The Modification Manners of the alterant of a kind of R14 aluminium alloy described in the present embodiment, specifically carries out according to following steps:
One, melting: at smelting temperature is 740 DEG C, melts 1000gR14 aluminium alloy and stirs, obtain R14 aluminium alloy melt;
Two, refining: at temperature is 740 DEG C, 7.5g hexachloroethane is divided and adds in R14 aluminium alloy melt for 3 times, stir, then refining insulation 10min at temperature is 740 DEG C, finally remove the scum silica frost on R14 aluminium alloy melt surface, obtain the R14 aluminium alloy melt after refining;
Three, add Cu-14P: at smelting temperature is 820 DEG C, in the R14 aluminium alloy melt after refining, add 0.57gCu-14P, stir, and be incubated 20min at smelting temperature is 820 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P;
Four, Al-10RE is added: smelting temperature is cooled to 780 DEG C from 820 DEG C, and at smelting temperature is 780 DEG C, 80gAl-10RE is added in the R14 aluminium alloy melt adding Cu-14P, stir, and 15min is incubated at smelting temperature is 780 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P and Al-10RE;
Five, casting mold is preheating to 200 DEG C, be then the R14 aluminium alloy melt cast adding Cu-14P and Al-10RE of 740 DEG C by temperature, ingot casting, namely obtains the R14 aluminium alloy after going bad.
The metallographic structure photo of the R14 alloy that embodiment two method goes bad as shown in Figure 3, R14 aluminium alloy without metallographic structure photo time rotten as shown in Figure 1, known with R14 aluminium alloy without compared with metallographic structure time rotten, the micro-metallographic structure of the R14 aluminium alloy after Metamorphism treatment there occurs obvious change, primary silicon size is reduced to 23 μm, corner angle are round and smooth, and Eutectic Silicon in Al-Si Cast Alloys changes corynebacterium and particulate state into by needle-like.
The R14 alloy that the present embodiment method goes bad is known through electronic universal material testing machine test, and tensile strength brings up to 268Mpa by the 212MPa of starting ingot.
The R14 alloy that the present embodiment method goes bad is known through electronic universal material testing machine test, and unit elongation brings up to 2.1% by 0.7% of starting materials.
Claims (3)
1. a Modification Manners for the alterant of R14 aluminium alloy, is characterized in that a kind of Modification Manners of alterant of R14 aluminium alloy carries out according to the following steps:
One, melting: at smelting temperature is 740 DEG C, melts 1000gR14 aluminium alloy and stirs, obtain R14 aluminium alloy melt;
Two, refining: at temperature is 740 DEG C, 7.5g hexachloroethane is divided and adds in R14 aluminium alloy melt for 3 times, stir, then refining insulation 10min at temperature is 740 DEG C, finally remove the scum silica frost on R14 aluminium alloy melt surface, obtain the R14 aluminium alloy melt after refining;
Three, add Cu-14P: at smelting temperature is 780 DEG C, in the R14 aluminium alloy melt after refining, add 0.43gCu-14P, stir, and be incubated 25min at smelting temperature is 780 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P;
Four, Al-10RE is added: smelting temperature is cooled to 760 DEG C from 780 DEG C, and at smelting temperature is 760 DEG C, 40gAl-10RE is added in the R14 aluminium alloy melt adding Cu-14P, stir, and 25min is incubated at smelting temperature is 760 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P and Al-10RE;
Five, casting mold is preheating to 200 DEG C, be then the R14 aluminium alloy melt cast adding Cu-14P and Al-10RE of 720 DEG C by temperature, ingot casting, namely obtains the R14 aluminium alloy after going bad.
2. a Modification Manners for the alterant of R14 aluminium alloy, is characterized in that a kind of Modification Manners of alterant of R14 aluminium alloy carries out according to the following steps:
One, melting: at smelting temperature is 740 DEG C, melts 1000gR14 aluminium alloy and stirs, obtain R14 aluminium alloy melt;
Two, refining: at temperature is 740 DEG C, 7.5g hexachloroethane is divided and adds in R14 aluminium alloy melt for 3 times, stir, then refining insulation 10min at temperature is 740 DEG C, finally remove the scum silica frost on R14 aluminium alloy melt surface, obtain the R14 aluminium alloy melt after refining;
Three, add Cu-14P: at smelting temperature is 800 DEG C, in the R14 aluminium alloy melt after refining, add 0.57gCu-14P, stir, and be incubated 20min at smelting temperature is 800 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P;
Four, Al-10RE is added: smelting temperature is cooled to 780 DEG C from 800 DEG C, and at smelting temperature is 780 DEG C, 60gAl-10RE is added in the R14 aluminium alloy melt adding Cu-14P, stir, and 20min is incubated at smelting temperature is 780 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P and Al-10RE;
Five, casting mold is preheating to 200 DEG C, be then the R14 aluminium alloy melt cast adding Cu-14P and Al-10RE of 720 DEG C by temperature, ingot casting, namely obtains the R14 aluminium alloy after going bad.
3. a Modification Manners for the alterant of R14 aluminium alloy, is characterized in that a kind of Modification Manners of alterant of R14 aluminium alloy carries out according to the following steps:
One, melting: at smelting temperature is 740 DEG C, melts 1000gR14 aluminium alloy and stirs, obtain R14 aluminium alloy melt;
Two, refining: at temperature is 740 DEG C, 7.5g hexachloroethane is divided and adds in R14 aluminium alloy melt for 3 times, stir, then refining insulation 10min at temperature is 740 DEG C, finally remove the scum silica frost on R14 aluminium alloy melt surface, obtain the R14 aluminium alloy melt after refining;
Three, add Cu-14P: at smelting temperature is 820 DEG C, in the R14 aluminium alloy melt after refining, add 0.57gCu-14P, stir, and be incubated 20min at smelting temperature is 820 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P;
Four, Al-10RE is added: smelting temperature is cooled to 780 DEG C from 820 DEG C, and at smelting temperature is 780 DEG C, 80gAl-10RE is added in the R14 aluminium alloy melt adding Cu-14P, stir, and 15min is incubated at smelting temperature is 780 DEG C, obtain the R14 aluminium alloy melt adding Cu-14P and Al-10RE;
Five, casting mold is preheating to 200 DEG C, be then the R14 aluminium alloy melt cast adding Cu-14P and Al-10RE of 740 DEG C by temperature, ingot casting, namely obtains the R14 aluminium alloy after going bad.
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