CN103614596B - A kind of aldural for electronic product structural component and preparation method thereof - Google Patents
A kind of aldural for electronic product structural component and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of aldural for electronic product structural component and preparation method thereof, this aldural structural part adopts pressure die casting shaping and containing aluminium, zinc, element silicon in alloy, its hardness is greater than 110HV5 and elongation is greater than 1%.Preparation method is: put in resistance smelting furnace by the starting material after proportioning and smelt, smelting temperature is 700-850 DEG C, and is fully uniformly mixed, and after having smelted, molten soup temperature is adjusted to 600-800 DEG C; Adopt pressure die-casting machine, by above-mentioned alloy melt die casting in metal die, obtain described aldural sample, the aldural sample obtained is heat-treated or/and natural aging intensive treatment.Aldural of the present invention has the features such as castability excellence, physical strength are high, dimensional stabilizing, and this alloy material is applicable to manufacture wall thickness and is less than 0.6mm, precision is high, intensity good and planeness is high product structure part, particularly electronic product structural component.
Description
Technical field
The present invention relates to technical field of aluminum alloy technology, relate in particular to a kind of aldural and preparation method thereof being applicable to manufacture electronic product structural component.
Background technology
Along with electronic product is to the development in miniaturization, intellectuality, lightness direction, more and more higher requirement be it is also proposed to the structural part of electronic product.Traditional magnesium, aluminium, zinc, copper alloy are due to some characteristics of material itself, be difficult to the demand meeting electronic product development, such as: although magnesium alloy has light weight, feature that specific tenacity is large, but toughness of material, corrosion resistance and casting ability are relatively poor, be difficult to be less than the thin-wall part of 0.6mm for the manufacture of wall thickness and the higher product of obdurability; Although common aluminum alloy good corrosion resistance also can carry out the surface treatment of various colors, the physical strength of cast member is low, and material flowability is poor, is difficult to produce thin-wall part, and the thin-wall part planeness of producing is low; Although zinc alloy has excellent castability, the strength of materials is low, corrosion-resistant, is difficult to for the manufacture of anti-corrosion and high strength structural part; Although copper alloy intensity is high, good corrosion resistance, there is casting ability, material cost is high, Product Precision is lower, the feature of consistence difference.
The present invention studies discovery, there is the hardness of more than 110HV5 (vickers hardness number 110 under 5Kg power condition), elongation has the aluminum alloy materials of the deformability of more than 1% simultaneously, effectively can meet the demand of producing high-precision electronic product, can meet simultaneously electronic product especially thin-wall part electronic product to the demand of high strength.
Summary of the invention
The object of this invention is to provide a kind of aldural and preparation method thereof, by the content of adjustment screening Aluminum in Alloy, zinc and silicon, and add appropriate titanium, copper, manganese, magnesium and rare earth element, obtain and have that castability excellence, physical strength are high, the aldural of dimensional stabilizing, this alloy material is applicable to manufacture wall thickness and is less than 0.6mm, precision is high, intensity good and planeness is high product structure part, particularly electronic product structural component.
Object of the present invention is achieved through the following technical solutions:
A kind of aldural for electronic product structural component, described aldural structural part adopts pressure die casting shaping and containing aluminium, zinc, silicon, titanium, copper, manganese, magnesium, cerium, lanthanum element in alloy, the hardness of this aldural is greater than 110HV5 (vickers hardness number 110 under 5kg power condition) and elongation is greater than 1%.
Preferred as technique scheme, the chemical formula of described aldural is: AlaZnbSicMd, wherein M represents the combination of Ti, Cu, Mn, Mg, Ce, La element, a, b, c, d are weight percentage, 14 ﹤ b ﹤ 20,6 ﹤ c ﹤ 8,0 ﹤ d ﹤ 6, a is surplus, and containing inevitable impurity element in alloy.
Preferred as technique scheme, in described aldural, the weight percentage of Ti element is less than 2%.
Preferred as technique scheme, the weight percentage of described aldural rare earth elements is less than 1%.
Preferred as technique scheme, in the impurity element of described aldural, the weight percentage of iron is less than 1%.
Preferred as technique scheme, the alloy structure of described aldural has two thing phases or the above mutually weave construction of two things.
For a preparation method for the aldural of electronic product structural component, comprise the following steps:
(1) contain aluminium, zinc, silicon, titanium, copper, manganese, magnesium, cerium, lanthanum element in described aldural, wherein will carry out proportioning by each element;
(2) put in resistance smelting furnace by the starting material after proportioning and smelt, smelting temperature is 700-850 DEG C, and is uniformly mixed, and after having smelted, molten soup temperature is adjusted to 600-800 DEG C;
(3) adopt pressure die-casting machine, by above-mentioned alloy melt die casting in metal die, obtain described aldural sample, the aldural sample obtained is heat-treated and/or natural aging intensive treatment.
Preferred as technique scheme, heat-treat the aldural sample obtained, thermal treatment temp is lower than 200 DEG C, and the time is greater than 10 minutes.
Preferred as technique scheme, carry out natural aging intensive treatment to the aldural sample obtained, the treatment time is greater than 12 hours.
Beneficial effect of the present invention is: aldural of the present invention has excellent casting ability, the foundry goods produced has high planeness and physical strength, the mechanical property of material can also be adjusted by thermal treatment process, be convenient to carry out follow-up Shape correction again and mechanical process, but also can the physical strength of effective reinforced alloys product by natural aging, thus electronic product structural component be made to have the non-deformability of excellence.Therefore, aldural of the present invention is suitable for being applied to and manufactures wall thickness and be less than 0.6mm, precision is high, intensity good and planeness is high electronic product structural component, especially has broad prospects to the exploitation of low cost complex precise thin-wall product structural part.
Pressure die casting is the effective newly net forming method being used for producing complex precise part in modern industry, and electronic product structural component prepared is in the present invention that pressure casting processes prepares.
Pressure die casting needs material to have high mobility, i.e. castibility, so that produce accurate complicated thin-wall product; The product needed that pressure die casting is produced is deviate from from mould, and need to overcome friction resistance when product is deviate from from mould, the more complicated friction resistance of product is larger, and friction resistance can cause the distortion of product usually; For foundry goods, the usually violent temperature drop of experience from high temperature to low temperature, thus produce the thermal stresses of can not ignore, foundry goods also can produce distortion in various degree in a mold after shaping taking-up; Therefore, the plane precision of product is measurement manufacturing concern's castings production ability important indicator.For cast material, require that there is high casting intensity on the one hand, so that opposing deformation of products, the demand of electronic product to high-strength structure part can be met simultaneously, require that material has certain plastic deformation ability on the other hand, so that carry out redeformation manufacture to foundry goods, the requirement of electronic product to structural part toughness can be met simultaneously.For metallic substance, the hardness that usually high intensity is corresponding high, therefore uses the physical strength of hardness number evaluating material, as tensile strength, compressive strength, flexural strength, is one more rationally effectively evaluating means.
The present invention studies discovery, there is the hardness of more than 110HV5 (vickers hardness number 110 under 5Kg power condition), elongation has the aluminum alloy materials of the deformability of more than 1% simultaneously, effectively can meet the demand of producing high-precision electronic product, can meet simultaneously electronic product especially thin-wall part electronic product to the demand of high strength.
Thermal treatment can effectively regulate or improve the mechanical property of cast article, but high-temperature heat treatment, especially high temperature adds the gross distortion that quench treatment can cause product, and can amplify the casting flaw of product.
The present invention studies discovery, cast product can not be caused to be out of shape lower than the thermal treatments of 200 DEG C, also casting flaw can not be amplified, therefore the electronic product structural component adopting aldural of the present invention to produce can carry out the low-temperature heat treatment of less than 200 DEG C, heat treatment time is greater than 10 minutes, so that regulate and improve the consistence of material property and the elongation index of material; Meanwhile, the aluminium alloy that can carry out natural aging strengthening for some also can carry out natural aging treatment, and aging time is greater than 12 hours, so that reach the hardness number of application claims.
According to the Production requirement of electronic product structural component, the low-temperature heat treatment of less than 200 DEG C and two kinds of combinations of natural aging treatment also can be carried out, to reach of the present invention requiring index.
The castability of material depends primarily on composition and the materials microstructure structure of material, if do not have specified otherwise in the present invention, each element percentage composition in the alloy is all weight percentage.Aluminum silicon alloy has good castability and corrosion stability, proper amount of silicon content add the mobility that effectively can improve alloy melt, and the thermal expansivity of material can be reduced, improve the hot cracking tendency in alloy casting process; Meanwhile, silicon exists with the form Dispersed precipitate of hard particles in the alloy, effectively can improve the intensity of alloy material; But too high silicone content can make the elongation of material decline to a great extent, reduce the toughness of material; The present invention studies discovery, and the silicone content of 2-12% has best over-all properties to aluminium alloy of the present invention.
In the present invention, zinc element is important alloy element, and it can form two kinds of typical solid solution phases with aluminium element, one is the solid solution phase (a phase) that zinc is dissolved in aluminium mutually, a kind of solid solution phase (η phase) being aluminium and being dissolved in zinc, η phase forms eutectoid with a phase usually, and η phase Zn content is higher, fusing point is low, good fluidity, and a phase fusing point is high, belongs to strengthening phase, first solidify, mobility is relatively poor.The existence of low-melting-point material phase, effectively improve the castability of material, the present invention is by the selection of the low-melting-point material phase of fair amount, allow to adopt the form of pressure die casting to produce wall thickness and be less than the thin-section casting of 0.6mm, and traditional cast aluminium alloy can only obtain wall thickness and is greater than more than 0.6mm foundry goods; A phase is the solid solution phase of zinc in aluminium, and the Zn content of solid solution is at low temperatures less than solid solution capacity under the high temperature conditions significantly, therefore be effective sosoloid strengthening phase, the present invention, by reasonably selecting content and the ratio of aluminum and zinc, obtains the alloy matrix aluminum with high mechanical strength; In the present invention, Zn content is preferably greater than 13% and is less than 34%.
Meanwhile, the present invention, in order to improve the intensity of alloy material further and material is metallurgical and castability, has screened titanium, copper, manganese, magnesium and rare earth element further as alloy element.
Copper, in alloy of the present invention, can form CuZn4 phase with zinc element, have the Vickers' hardness of 150, belong to hard crisp phase, have the effect of solution strengthening, can improve hardness and the intensity of alloy, thus effectively can improve the non-deformability of foundry goods; Meanwhile, the solid solution strengthening effect of aluminium, magnesium, silicon phase can also be strengthened, improve the intensity of material.Magnesium elements is the alloy element effectively improving intensity of aluminum alloy, usually forms MgSi phase with silicon, can form effective strengthening phase, and can carry out natural aging strengthening; But low-alloyed creep strength and plasticity can fall in too high Mg content, and increase the hot crackability of alloy.Manganese element can form MnAl6 phase with aluminium element, disperse be distributed in alloy melt, stop the recrystallization process of aluminium alloy, play the effect of crystal grain thinning; Meanwhile, manganese element can with melt in the middle of impurity iron element form (Fe, Mn) Al6 phase, effectively eliminate ferro element.Iron in Aluminium Alloy element can be serious the mechanical property affecting alloy, especially the plasticity of material and toughness, simultaneously, iron and aluminium element form Al5Fe2 hard phase, and forming scum silica frost, inclusion is present in the visual appearance and mechanical property that can affect foundry goods in foundry goods, and iron level is preferably less than 1% in the present invention, otherwise sharply can affect plasticity and the toughness of material, and significantly reduce the erosion resistance of material.
Titanium elements can form non-spontaneous TiAl2 nucleus with aluminium element, can the grain structure of effective refinement alloy of the present invention, the refinement of crystal grain is conducive to plasticity and the toughness of improving alloy, and stability and the consistence of material property can be improved, it is the important alloy element of the present invention, but the mechanical property of titanium content too high meeting damaged material, in the present invention, titanium content is preferably less than 2%.Titanium elements adds with the form of aluminium titanium master alloy in the present invention.
Rare earth element is the important alloy element of aluminium alloy, the condensate depression of melt can be effectively reduced during founding, crystal grain thinning, and the harmful gaseous impurities that can reduce in alloy melt, lower the surface tension of melt, improve the mobility of material, be conducive to improving the processing performance of material and the mechanical property of material, but during too high levels, again can coarsened grain, the mechanical property of infringement alloy.In the present invention, rare earth element is preferably lanthanum and cerium, and content is preferably less than 1%.
In the present invention, the element fusing points such as copper, silicon, manganese, titanium are significantly higher than the main element aluminum and zinc in alloy, and rare earth element is easy to oxidation, therefore in the present invention, copper, silicon, manganese, titanium, rare earth preferably adopt the form of master alloy to add, and are uniformly mixed fully in smelting process.
Meanwhile, consider the production cost of material, because highly purified starting material can cause the sharply rising of cost of alloy, therefore allow in the present invention containing inevitable a small amount of impurity element in starting material, material purity is preferably greater than 99%.
Accompanying drawing explanation
Fig. 1 is aldural sample stereographic map of the present invention;
Fig. 2 is embodiment 1 sample microstructure metallograph.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, and this embodiment only for explaining the present invention, does not form limiting the scope of the present invention.In addition, in this manual, unless otherwise specified, then content all represents mass percentage.
For the aldural of electronic product structural component in the present invention, this aldural structural part adopts pressure die casting shaping and containing aluminium, zinc, element silicon in alloy, its hardness is greater than 110HV5 and elongation is greater than 1%, embodiment and comparative example as follows.
Embodiment 1: carry out alloy proportion by Al61Zn30Si6Cu2.8Ti0.1Ce0.1 alloying constituent, wherein copper, silicon, titanium, rare earth element adopt the form of AlCu, AlSi, AlTi, AlCe to carry out proportioning, other elements adopt the form proportioning of pure metal, and material purity is all greater than 99%.
Put in resistance smelting furnace by starting material after proportioning and smelt, smelting temperature is 800 DEG C, and is fully uniformly mixed, and after having smelted, molten soup temperature is adjusted to 750 DEG C.
Adopt pressure die-casting machine, by above-mentioned alloy melt die casting in metal die, obtain sample as shown in Figure 1, product design is of a size of 150mm × 100mm × 6mm, and centre portions sheet gauge is 1mm, and carries out 1 reversible deformation shaping to foundry goods plane.
Sample is carried out respectively on sclerometer, tensile testing machine, three-coordinates measuring machine to the test of Vickers' hardness, elongation and planeness, Vickers' hardness test adopts the 5KG multifunctional manual capstan head digital readout Vicker hardness tester of Shanghai optical electromechanical institute to test, and test load is 5Kg; Tension test test adopts CTM2500 microcomputer controlled electronic universal tester to carry out Elongation test, and during test, Fig. 1 sample is cut into standard model according to GB GB/T228-2002, during test, rate of extension is 1mm/min, and test span is 50mm; Planeness adopts MQ564 three-coordinates measuring machine to detect, and planeness test is tested product after as cast condition product and shaping respectively; Meanwhile, machinability processing test is carried out to sample.Carry out microsection analysis to sample, as shown in Figure 2, test result lists in table 1 to weave construction.
Embodiment 2: carry out alloy proportion by Al75Zn14Si8Cu2.8Ti0.1Ce0.1 alloying constituent, wherein copper, silicon, titanium, rare earth element adopt the form of AlCu, AlSi, AlTi, AlCe to carry out proportioning, other elements adopt the form proportioning of pure metal, and material purity is all greater than 99%.
Put in resistance smelting furnace by starting material after proportioning, smelt, smelting temperature is 800 DEG C, and is fully uniformly mixed, and after having smelted, molten soup temperature is adjusted to 750 DEG C.
Adopt pressure die-casting machine, by above-mentioned alloy melt die casting in metal die, obtain sample as shown in Figure 1, product design is of a size of 150mm × 100mm × 6mm, and centre portions sheet gauge is 1mm, and carries out 1 reversible deformation shaping to foundry goods plane.
Sample is carried out respectively on sclerometer, tensile testing machine, three-coordinates measuring machine to the test of Vickers' hardness, elongation and planeness, Vickers' hardness test adopts the 5KG multifunctional manual capstan head digital readout Vicker hardness tester of Shanghai optical electromechanical institute to test, and test load is 5Kg; Tension test test adopts CTM2500 microcomputer controlled electronic universal tester to carry out Elongation test, and during test, Fig. 1 sample is cut into standard model according to GB GB/T228-2002, during test, rate of extension is 1mm/min, and test span is 50mm; Planeness adopts MQ564 three-coordinates measuring machine to detect, and planeness test is tested product after as cast condition product and shaping respectively; Meanwhile, carry out machinability processing test to sample, test result lists in table 1.
Embodiment 3: carry out alloy proportion by Al61Zn30Si6Cu2.8Ti0.1Ce0.1 alloying constituent, wherein copper, silicon, titanium, rare earth element adopt the form of AlCu, AlSi, AlTi, AlCe to carry out proportioning, other elements adopt the form proportioning of pure metal, and material purity is all greater than 99%.
Put in resistance smelting furnace by starting material after proportioning, smelt, smelting temperature is 800 DEG C, and is fully uniformly mixed, and after having smelted, molten soup temperature is adjusted to 750 DEG C.
Adopt pressure die-casting machine, by above-mentioned alloy melt die casting in metal die, obtain sample as shown in Figure 1, product design is of a size of 150mm × 100mm × 6mm, and centre portions sheet gauge is 1mm, then carries out 180 DEG C to sample, the thermal treatment of 30 minutes, after thermal treatment, the hardness of material is reduced to 120Hv5 from 150Hv5, and elongation is increased to 2% from 1.1%, more can be conducive to the redeformation process carrying out product.
Sample is carried out respectively on sclerometer, tensile testing machine, three-coordinates measuring machine to the test of Vickers' hardness, elongation and planeness, Vickers' hardness test adopts the 5KG multifunctional manual capstan head digital readout Vicker hardness tester of Shanghai optical electromechanical institute to test, and test load is 5Kg; Tension test test adopts CTM2500 microcomputer controlled electronic universal tester to carry out Elongation test, and during test, Fig. 1 sample is cut into standard model according to GB GB/T228-2002, during test, rate of extension is 1mm/min, and test span is 50mm; Planeness adopts MQ564 three-coordinates measuring machine to detect, and planeness test is tested product after as cast condition product and shaping respectively; Meanwhile, machinability processing test is carried out to sample.After having tested, carrying out reversible deformation shaping once to sample, and then carrying out planeness test, test result lists in table 1.
Embodiment 4: carry out alloy proportion by Al71Zn20Si6Cu2.8Ti0.1Ce0.1 alloying constituent, wherein copper, silicon, titanium, rare earth element adopt the form of AlCu, AlSi, AlTi, AlCe to carry out proportioning, other elements adopt the form proportioning of pure metal, and material purity is all greater than 99%.
Put in resistance smelting furnace by starting material after proportioning, smelt, smelting temperature is 800 DEG C, and is fully uniformly mixed, and after having smelted, molten soup temperature is adjusted to 750 DEG C.
Adopt pressure die-casting machine, by above-mentioned alloy melt die casting in metal die, obtain sample as shown in Figure 1, product design is of a size of 150mm × 100mm × 6mm, and centre portions sheet gauge is 1mm.
Sample is carried out respectively on sclerometer, tensile testing machine, three-coordinates measuring machine to the test of Vickers' hardness, elongation and planeness, Vickers' hardness test adopts the 5KG multifunctional manual capstan head digital readout Vicker hardness tester of Shanghai optical electromechanical institute to test, and test load is 5Kg; Tension test test adopts CTM2500 microcomputer controlled electronic universal tester to carry out Elongation test, and during test, Fig. 1 sample is cut into standard model according to GB GB/T228-2002, during test, rate of extension is 1mm/min, and test span is 50mm; Planeness adopts MQ564 three-coordinates measuring machine to detect, and planeness test is tested product after as cast condition product and shaping respectively; Meanwhile, carry out machinability processing test to sample, test result lists in table 1.
Then carry out natural aging intensive treatment to sample, the treatment time is 48 hours, and then carry out hardness and planeness test to sample, hardness has 120HV5 to rise to 150HV5, and planeness does not then change substantially.
Embodiment 5: carry out alloy proportion by Al71Zn20Si6Cu2Ti0.5Mg0.2Mn0.10.1La0.1 alloying constituent, wherein copper, silicon, titanium, manganese, rare earth element adopt the form of AlCu, AlSi, AlTi, AlMn, AlLa to carry out proportioning, other elements adopt the form proportioning of pure metal, and material purity is all greater than 99%.
Put in resistance smelting furnace by starting material after proportioning, smelt, smelting temperature is 800 DEG C, and is fully uniformly mixed, and after having smelted, molten soup temperature is adjusted to 750 DEG C.
Adopt pressure die-casting machine, by above-mentioned alloy melt die casting in metal die, obtain sample as shown in Figure 1, product design is of a size of 150mm × 100mm × 6mm, and centre portions sheet gauge is 1mm.
Sample is carried out respectively on sclerometer, tensile testing machine, three-coordinates measuring machine to the test of Vickers' hardness, elongation and planeness, Vickers' hardness test adopts the 5KG multifunctional manual capstan head digital readout Vicker hardness tester of Shanghai optical electromechanical institute to test, and test load is 5Kg; Tension test test adopts CTM2500 microcomputer controlled electronic universal tester to carry out Elongation test, and during test, Fig. 1 sample is cut into standard model according to GB GB/T228-2002, during test, rate of extension is 1mm/min, and test span is 50mm; Planeness adopts MQ564 three-coordinates measuring machine to detect, and planeness test is tested product after as cast condition product and shaping respectively; Meanwhile, carry out machinability processing test to sample, test result lists in table 1.
Then technique is handled as follows to sample, to improve sample plane degree and the strength of materials: first carry out 180 DEG C to sample, the thermal treatment of 50 minutes, then tested for hardness value and elongation are respectively 112HV5 and 2.5%; Reversible deformation shaping is carried out 1 time to sample; Test planeness drops to 100um by 180um.Then carry out natural aging intensive treatment to sample, the treatment time is 48 hours, and then carry out hardness and planeness test to sample, hardness rises to 155HV5 by 112HV5 again, and planeness does not then change substantially.
Comparative example 1: carry out alloy proportion by Al93.5Si5Cu1Mg0.5 alloying constituent, Qi Zhongtong, element silicon adopt the form of AlCu, AlSi to carry out proportioning, and other elements adopt the form proportioning of pure metal, and material purity is all greater than 99%.
Put in resistance smelting furnace by starting material after proportioning, smelt, smelting temperature is 800 DEG C, and is fully uniformly mixed, and after having smelted, molten soup temperature is adjusted to 750 DEG C.
Adopt pressure die-casting machine, by above-mentioned alloy melt die casting in metal die, obtain sample as shown in Figure 1, product design is of a size of 150mm × 100mm × 6mm, and centre portions sheet gauge is 1mm, and carries out 1 reversible deformation shaping to foundry goods plane.
Sample is carried out respectively on sclerometer, tensile testing machine, three-coordinates measuring machine to the test of Vickers' hardness, elongation and planeness, Vickers' hardness test adopts the 5KG multifunctional manual capstan head digital readout Vicker hardness tester of Shanghai optical electromechanical institute to test, and test load is 5Kg; Tension test test adopts CTM2500 microcomputer controlled electronic universal tester to carry out Elongation test, and during test, Fig. 1 sample is cut into standard model according to GB GB/T228-2002, during test, rate of extension is 1mm/min, and test span is 50mm; Planeness adopts MQ564 three-coordinates measuring machine to detect, and planeness test is tested product after as cast condition product and shaping respectively; Meanwhile, carry out machinability processing test to sample, test result lists in table 1.
As can be seen from test result, product there occurs serious distortion, and product has lower physical strength.
Comparative example 2: carry out alloy proportion by Al61Zn22Si14Cu2.8Ti0.1Ce0.1 alloying constituent, wherein copper, silicon, titanium, rare earth element adopt the form of AlCu, AlSi, AlTi, AlCe to carry out proportioning, other elements adopt the form proportioning of pure metal, and material purity is all greater than 99%.
Put in resistance smelting furnace by starting material after proportioning, smelt, smelting temperature is 800 DEG C, and is fully uniformly mixed, and after having smelted, molten soup temperature is adjusted to 750 DEG C.
Adopt pressure die-casting machine, by above-mentioned alloy melt die casting in metal die, obtain sample as shown in Figure 1, product design is of a size of 150mm × 100mm × 6mm, and centre portions sheet gauge is 1mm, and carries out 1 reversible deformation shaping to foundry goods plane.
Sample is carried out respectively on sclerometer, tensile testing machine, three-coordinates measuring machine to the test of Vickers' hardness, elongation and planeness, Vickers' hardness test adopts the 5KG multifunctional manual capstan head digital readout Vicker hardness tester of Shanghai optical electromechanical institute to test, and test load is 5Kg; Tension test test adopts CTM2500 microcomputer controlled electronic universal tester to carry out Elongation test, and during test, Fig. 1 sample is cut into standard model according to GB GB/T228-2002, during test, rate of extension is 1mm/min, and test span is 50mm; Planeness adopts MQ564 three-coordinates measuring machine to detect, and planeness test is tested product after as cast condition product and shaping respectively; Meanwhile, carry out machinability processing test to sample, test result lists in table 1.
As can be seen from test result, product due to hardness comparatively large, intensity is higher, although product as cast condition planeness is higher, be difficult to shaping, and product is easy to cracking in shaping and reforming process, be difficult to carry out tapping process in chip processing test, Cutting Tool Damage is serious.
Comparative example 3: carry out alloy proportion by Al60Zn30Si6Cu2.8Ti0.1Ce1.1 alloying constituent, wherein copper, silicon, titanium, rare earth element adopt AlCu, AlSi, AlTi, AlCe form to carry out proportioning, other elements adopt the form proportioning of pure metal, and material purity is all greater than 99%.
Put in resistance smelting furnace by starting material after proportioning, smelt, smelting temperature is 800 DEG C, and is fully uniformly mixed, and after having smelted, molten soup temperature is adjusted to 750 DEG C.
Adopt pressure die-casting machine, by above-mentioned alloy melt die casting in metal die, obtain sample as shown in Figure 1, product design is of a size of 150mm × 100mm × 6mm, and centre portions sheet gauge is 1mm, and carries out 1 reversible deformation shaping to foundry goods plane.
Sample is carried out respectively on sclerometer, tensile testing machine, three-coordinates measuring machine to the test of Vickers' hardness, elongation and planeness, Vickers' hardness test adopts the 5KG multifunctional manual capstan head digital readout Vicker hardness tester of Shanghai optical electromechanical institute to test, and test load is 5Kg; Tension test test adopts CTM2500 microcomputer controlled electronic universal tester to carry out Elongation test, and during test, Fig. 1 sample is cut into standard model according to GB GB/T228-2002, during test, rate of extension is 1mm/min, and test span is 50mm; Planeness adopts MQ564 three-coordinates measuring machine to detect, and planeness test is tested product after as cast condition product and shaping respectively; Meanwhile, carry out machinability processing test to sample, test result lists in table 1.
As can be seen from test result, product due to hardness comparatively large, intensity is higher, although product as cast condition planeness is higher, be difficult to shaping, and product is easy to cracking in shaping and reforming process, Cutting Tool Damage is serious, and toughness of products is lower simultaneously, easily produces and falls the product defectses such as cracking.
Comparative example 4: carry out alloy proportion by Al66Zn30Si1Cu2.8Ti0.1Ce0.1 alloying constituent, wherein copper, silicon, titanium, rare earth element adopt AlCu, AlSi, AlTi, AlCe form to carry out proportioning, other elements adopt the form proportioning of pure metal, and material purity is all greater than 99%.
Put in resistance smelting furnace by starting material after proportioning, smelt, smelting temperature is 800 DEG C, and is fully uniformly mixed, and after having smelted, molten soup temperature is adjusted to 750 DEG C.
Adopt pressure die-casting machine, by above-mentioned alloy melt die casting in metal die, obtain sample as shown in Figure 1, product design is of a size of 150mm × 100mm × 6mm, and centre portions sheet gauge is 1mm, and carries out 1 reversible deformation shaping to foundry goods plane.
Sample is carried out respectively on sclerometer, tensile testing machine, three-coordinates measuring machine to the test of Vickers' hardness, elongation and planeness, Vickers' hardness test adopts the 5KG multifunctional manual capstan head digital readout Vicker hardness tester of Shanghai optical electromechanical institute to test, and test load is 5Kg; Tension test test adopts CTM2500 microcomputer controlled electronic universal tester to carry out Elongation test, and during test, Fig. 1 sample is cut into standard model according to GB GB/T228-2002, during test, rate of extension is 1mm/min, and test span is 50mm; Planeness adopts MQ564 three-coordinates measuring machine to detect, and planeness test is tested product after as cast condition product and shaping respectively; Meanwhile, carry out machinability processing test to sample, test result lists in table 1.
Hardness and the planeness of test result display product all show good characteristic, and product has good plastic deformation ability and Research on Cutting Characteristics.But find in die cast process, under same casting technological parameter condition, product is difficult to shaping complete, easily produces casting flaw, thus affects the appearance looks elegant of product, and is difficult to produce thinner foundry goods.
Comparative example 5: carry out alloy proportion by Al61Zn27Si6Cu2.8Ti3.1Ce0.1 alloying constituent, wherein copper, silicon, titanium, rare earth element adopt AlCu, AlSi, AlTi, AlCe form to carry out proportioning, other elements adopt the form proportioning of pure metal, and material purity is all greater than 99%.
Put in resistance smelting furnace by starting material after proportioning, smelt, smelting temperature is 800 DEG C, and is fully uniformly mixed, and after having smelted, molten soup temperature is adjusted to 750 DEG C.
Adopt pressure die-casting machine, by above-mentioned alloy melt die casting in metal die, obtain sample as shown in Figure 1, product design is of a size of 150mm × 100mm × 6mm, and centre portions sheet gauge is 1mm, and carries out 1 reversible deformation shaping to foundry goods plane.
Sample is carried out respectively on sclerometer, tensile testing machine, three-coordinates measuring machine to the test of Vickers' hardness, elongation and planeness, Vickers' hardness test adopts the 5KG multifunctional manual capstan head digital readout Vicker hardness tester of Shanghai optical electromechanical institute to test, and test load is 5Kg; Tension test test adopts CTM2500 microcomputer controlled electronic universal tester to carry out Elongation test, and during test, Fig. 1 sample is cut into standard model according to GB GB/T228-2002, during test, rate of extension is 1m/min, and test span is 50mm; Planeness adopts MQ564 three-coordinates measuring machine to detect, and planeness test is tested product after as cast condition product and shaping respectively; Meanwhile, carry out machinability processing test to sample, test result lists in table 1.
Hardness and the planeness of test result display product all show good characteristic, but product plastic deformation ability sharply worsens, and product is difficult to cut, and the consistence of product is also greatly affected.
As can be seen from embodiments of the invention and comparative example, aldural of the present invention has excellent casting ability, the foundry goods produced has high planeness and physical strength, the mechanical property of material can also be adjusted by thermal treatment process, be convenient to carry out follow-up Shape correction again and mechanical process, but also can the physical strength of effective reinforced alloys product by natural aging, thus electronic product structural component be made to have the non-deformability of excellence.Therefore, aldural of the present invention is suitable for being applied to electronic product structural component, especially has broad prospects to the exploitation of low cost complex precise thin-wall product structural part.
Table 1
Claims (5)
1. the aldural for electronic product structural component, it is characterized in that: described aldural structural part adopts pressure die casting shaping and containing aluminium, zinc, silicon, titanium, copper, manganese, magnesium, lanthanum element in alloy, the hardness of this aldural is greater than 110HV5 (vickers hardness number 110 under 5kg power condition) and elongation is greater than 1%;
The chemical formula of described aldural is: AlaZnbSicMd, and wherein M represents the combination of Ti, Cu, Mn, Mg, La element, and a, b, c, d are weight percentage, 14 ﹤ b ﹤ 20,6 ﹤ c ﹤ 8,0 ﹤ d ﹤ 6, a is surplus, and containing inevitable impurity element in alloy;
Its preparation method comprises the following steps:
(1) contain aluminium, zinc, silicon, titanium, copper, manganese, magnesium, lanthanum element in described aldural, wherein will carry out proportioning by each element;
(2) put in resistance smelting furnace by the starting material after proportioning and smelt, smelting temperature is 700-850 DEG C, and is uniformly mixed, and after having smelted, molten soup temperature is adjusted to 600-800 DEG C;
(3) adopt pressure die-casting machine, by above-mentioned alloy melt die casting in metal die, obtain described aldural sample, the aldural sample obtained is heat-treated and/or natural aging intensive treatment;
Wherein thermal treatment temp is lower than 200 DEG C, and the time is greater than 10 minutes, natural aging intensive treatment, and the treatment time is greater than 12 hours.
2. a kind of aldural for electronic product structural component according to claim 1, is characterized in that: in described aldural, the weight percentage of Ti element is less than 2%.
3. a kind of aldural for electronic product structural component according to claim 1, is characterized in that: the weight percentage of described aldural rare earth elements is less than 1%.
4. a kind of aldural for electronic product structural component according to claim 1, is characterized in that: in the impurity element of described aldural, the weight percentage of iron is less than 1%.
5. a kind of aldural for electronic product structural component according to claim 1, is characterized in that: the alloy structure of described aldural has two thing phases or the above mutually weave construction of two things.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005281798A (en) * | 2004-03-30 | 2005-10-13 | Denso Corp | Aluminum diecast alloy component for gasoline-ethanol mixed fuel |
| CN101104910A (en) * | 2007-08-16 | 2008-01-16 | 无锡麟龙铝业有限公司 | Multicomponent alloy coating material for high corrosion resistance coating steel products and manufacturing method thereof |
| CN102108463A (en) * | 2010-01-29 | 2011-06-29 | 北京有色金属研究总院 | Aluminium alloy product suitable for manufacturing structures and preparation method |
| WO2012102485A2 (en) * | 2011-01-27 | 2012-08-02 | 지케이 주식회사 | Aluminum alloy for die casting |
| CN103069029A (en) * | 2010-05-29 | 2013-04-24 | 怡得乐量子有限公司 | Aluminum alloy, and aluminum alloy casting |
-
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005281798A (en) * | 2004-03-30 | 2005-10-13 | Denso Corp | Aluminum diecast alloy component for gasoline-ethanol mixed fuel |
| CN101104910A (en) * | 2007-08-16 | 2008-01-16 | 无锡麟龙铝业有限公司 | Multicomponent alloy coating material for high corrosion resistance coating steel products and manufacturing method thereof |
| CN102108463A (en) * | 2010-01-29 | 2011-06-29 | 北京有色金属研究总院 | Aluminium alloy product suitable for manufacturing structures and preparation method |
| CN103069029A (en) * | 2010-05-29 | 2013-04-24 | 怡得乐量子有限公司 | Aluminum alloy, and aluminum alloy casting |
| WO2012102485A2 (en) * | 2011-01-27 | 2012-08-02 | 지케이 주식회사 | Aluminum alloy for die casting |
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