CN103882267A - High-strength cast aluminum alloy material and preparation method thereof - Google Patents
High-strength cast aluminum alloy material and preparation method thereof Download PDFInfo
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- CN103882267A CN103882267A CN201410064503.5A CN201410064503A CN103882267A CN 103882267 A CN103882267 A CN 103882267A CN 201410064503 A CN201410064503 A CN 201410064503A CN 103882267 A CN103882267 A CN 103882267A
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Abstract
The invention relates to a high-strength cast aluminum alloy material which contains the following chemical components in percentage by mass: 0.6-0.8% of silicon, 3.6-3.8% of copper, 5.2-2.4% of iron, 1.3-1.4% of magnesium, 6.4-6.6% of manganese, 0.26-0.32% of La, 0.12-0.15% of Ce and the balance of aluminum. The aluminum alloy has high hardness; and by using the reasonable after-casting heat treatment and raw material delivery in batches, the crystal grains of the alloy are refined, and the alloy has low defective rate, favorable toughness, high tensile strength and high elongation percentage. By adding the silicon, the alloy has favorable wear resistance. By using part of scrap aluminum as the raw material, the alloy quality is more stable and uniform. The aluminum alloy is suitable for making boards, profiles, forge pieces, wires, rods, tubes, foils and the like. When the refining agent is used for casting production, the porosity in the casting can be lowered by 1-2 degrees, the oxide inclusion content is Grade 2 or so, the air tightness of the casting is high, and the yield is high.
Description
Technical field
The manufacture field that the present invention relates to metal alloy compositions, relates in particular to a kind of high-strength cast aluminium alloy material and preparation method thereof.
Background technology
Aluminium alloy density is low, intensity is high, plasticity is good, be widely used, although aluminum current alloy is various in style, performance is different, but be difficult to the comprehensive mechanical property that reaches excellent, some aluminium alloy tensile strength is high, but unit elongation is on the low side, or contrary, unit elongation is high, but tensile strength is inadequate again, or unit elongation and tensile strength all high, but castability is bad.
Summary of the invention
The object of the present invention is to provide a kind of high-strength cast aluminium alloy material and preparation method thereof, this Cu alloy material has advantages of high rigidity, tensile strength is high, unit elongation is high.
Technical scheme of the present invention is as follows:
A kind of high-strength cast aluminium alloy material, is characterized in that: chemical element composition and mass percent thereof that it contains are: silicon 0.6-0.8, copper 3.6-3.8, iron 5.2-5.4, magnesium 1.3-1.4, manganese 6.4-6.6, La 0.26-0.32, Ce 0.12-0.15, surplus are aluminium.
The production method of described high-strength cast aluminium alloy material, is characterized in that:
(1), preparing fine aluminium ingot and aluminium scrap originates as aluminum matrix in 1:0.4-0.7 ratio, fine aluminium ingot is added to drop in stove and melt, carry out removing impurities matter, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add aluminium scrap fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove be: (1) silicon, manganese; (2) copper, iron; (3) other remaining components; The each batch of timed interval of dropping into element is 21-23 minute, after feeding intake, stirs.
Described casting postheat treatment is: be first warming up to 220-230 ℃ by room temperature with 200-220 ℃/h of speed, insulation 30-40 minute, be warming up to 400-420 ℃ with 200-220 ℃/h of speed again, insulation 30-40 minute, be warming up to 530-540 ℃ with 200-220 ℃/h of speed again, insulation 5-6 hour; Be cooled to 80-100 ℃ with 70-80 ℃ of clear water, then naturally cool to room temperature; Be warming up to 170-180 ℃ with 180-190 ℃/h of speed again, insulation 6-8 hour, takes out air cooling and get final product.
Described refining agent is made up of the raw material of following weight part: clay 10-12, lapis amiridis 3-4, aluminium nitride 5-6, kaolin 8-10, lazurite 1-2, trees ashes 1-2, aluminium hydroxide 8-10, jade powder 3-4, montmorillonite 1-2, Fluorspar Powder 3-4, Paris white 4-5, Bi
2o
32-3; Its preparation method is that clay, lapis amiridis, aluminium nitride, kaolin, lazurite, trees ashes, aluminium hydroxide, jade powder, montmorillonite are mixed, be heated to 2600-3000 ℃, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.
Beneficial effect of the present invention
Aluminium alloy of the present invention is by adding the elements such as manganese, iron, copper, magnesium, and alloy has high hardness, and through reasonably casting postheat treatment, throwing raw materials in batches, makes alloy grain refinement more simultaneously, and fraction defective is low, good toughness, and tensile strength is high, and unit elongation is high; By adding silicon, make Wear Resistance good; By adding La and Ce, further increase wear resistance and the tensile strength of alloy; The present invention uses part aluminium scrap for raw material, makes more stable uniform of alloy quality.Aluminium alloy of the present invention is applicable to make sheet material, section bar, forging, wire rod, bar, tubing, foil etc.Refining agent of the present invention, for Foundry Production, can make the degree of porosity in foundry goods reduce 1-2 degree, and oxide inclusion is 2 grades of left and right, and the resistance to air loss of foundry goods is high, and yield rate is high.
Embodiment
A kind of high-strength cast aluminium alloy material, chemical element composition and mass percent thereof that it contains are: silicon 0.6-0.8, copper 3.6-3.8, iron 5.2-5.4, magnesium 1.3-1.4, manganese 6.4-6.6, La 0.26-0.32, Ce 0.12-0.15, surplus are aluminium.
The production method of described high-strength cast aluminium alloy material is as follows:
(1), preparing fine aluminium ingot and aluminium scrap originates as aluminum matrix in 1:0.6 ratio, fine aluminium ingot is added to drop in stove and melt, carry out removing impurities matter, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add aluminium scrap fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove be: (1) silicon, manganese; (2) copper, iron; (3) other remaining components; The each batch of timed interval of dropping into element is 22 minutes, after feeding intake, stirs.
Described casting postheat treatment is: be first warming up to 225 ℃ by room temperature with 210 ℃/h of speed, be incubated 35 minutes, then be warming up to 410 ℃ with 210 ℃/h of speed, be incubated 35 minutes, then be warming up to 535 ℃ with 210 ℃/h of speed, be incubated 5.5 hours; Be cooled to 90 ℃ with 75 ℃ of clear water, then naturally cool to room temperature; Be warming up to 175 ℃ with 185 ℃/h of speed again, be incubated 7 hours, take out air cooling and get final product.
Described refining agent by following weight part (kilogram) raw material make: clay 10, lapis amiridis 4, aluminium nitride 5, kaolin 8, lazurite 1, trees ashes 2, aluminium hydroxide 8, jade powder 4, montmorillonite 1, Fluorspar Powder 4, Paris white 4, Bi
2o
33; Its preparation method is that clay, lapis amiridis, aluminium nitride, kaolin, lazurite, trees ashes, aluminium hydroxide, jade powder, montmorillonite are mixed, be heated to 2600-3000 ℃, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.
After tested, tensile strength б b is 480Mpa to the present embodiment high-strength cast aluminium alloy material, yield strength 370MPa, and hardness value HB is 120, electric conductivity %IACS58, unit elongation 20%.
Claims (4)
1. a high-strength cast aluminium alloy material, is characterized in that: chemical element composition and mass percent thereof that it contains are: silicon 0.6-0.8, copper 3.6-3.8, iron 5.2-5.4, magnesium 1.3-1.4, manganese 6.4-6.6, La 0.26-0.32, Ce 0.12-0.15, surplus are aluminium.
2. the production method of high-strength cast aluminium alloy material according to claim 1, is characterized in that:
(1), preparing fine aluminium ingot and aluminium scrap originates as aluminum matrix in 1:0.4-0.7 ratio, fine aluminium ingot is added to drop in stove and melt, carry out removing impurities matter, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add aluminium scrap fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove be: (1) silicon, manganese; (2) copper, iron; (3) other remaining components; The each batch of timed interval of dropping into element is 21-23 minute, after feeding intake, stirs.
3. the production method of high-strength cast aluminium alloy material according to claim 2, it is characterized in that: described casting postheat treatment is: be first warming up to 220-230 ℃ by room temperature with 200-220 ℃/h of speed, insulation 30-40 minute, be warming up to 400-420 ℃ with 200-220 ℃/h of speed again, insulation 30-40 minute, be warming up to 530-540 ℃ with 200-220 ℃/h of speed again, insulation 5-6 hour; Be cooled to 80-100 ℃ with 70-80 ℃ of clear water, then naturally cool to room temperature; Be warming up to 170-180 ℃ with 180-190 ℃/h of speed again, insulation 6-8 hour, takes out air cooling and get final product.
4. the production method of high-strength cast aluminium alloy material according to claim 2, is characterized in that: described refining agent is made up of the raw material of following weight part: clay 10-12, lapis amiridis 3-4, aluminium nitride 5-6, kaolin 8-10, lazurite 1-2, trees ashes 1-2, aluminium hydroxide 8-10, jade powder 3-4, montmorillonite 1-2, Fluorspar Powder 3-4, Paris white 4-5, Bi
2o
32-3; Its preparation method is that clay, lapis amiridis, aluminium nitride, kaolin, lazurite, trees ashes, aluminium hydroxide, jade powder, montmorillonite are mixed, be heated to 2600-3000 ℃, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.
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| CN201410064503.5A CN103882267A (en) | 2014-02-25 | 2014-02-25 | High-strength cast aluminum alloy material and preparation method thereof |
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| CN201410064503.5A CN103882267A (en) | 2014-02-25 | 2014-02-25 | High-strength cast aluminum alloy material and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152753A (en) * | 2014-07-08 | 2014-11-19 | 蚌埠市英路光电有限公司 | Aluminium-based composite heat dissipation material containing modified wood ash for LED |
| CN105256181A (en) * | 2015-11-26 | 2016-01-20 | 王栋 | Preparation method of environment-friendly electric car cable aluminum alloy rod |
| CN105344977A (en) * | 2015-10-10 | 2016-02-24 | 广西大美电器有限公司 | Casting method for bearing ring for solar water heater rotary support |
| CN106282705A (en) * | 2016-08-31 | 2017-01-04 | 江苏威创能源设备有限公司 | A kind of alloy material for manufacturing expansion joint end pipe and preparation method thereof |
| CN106626987A (en) * | 2017-01-09 | 2017-05-10 | 正新橡胶（中国）有限公司 | Tire nail for civil use and application of tire nail |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1936050A (en) * | 2006-10-18 | 2007-03-28 | 东华大学 | Fine grained aluminium alloy and its preparing method |
| CN102554192A (en) * | 2012-01-11 | 2012-07-11 | 沈阳铸造研究所 | Manufacturing method of highly-conductive and heat-resisting electrode cross beam component |
-
2014
- 2014-02-25 CN CN201410064503.5A patent/CN103882267A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1936050A (en) * | 2006-10-18 | 2007-03-28 | 东华大学 | Fine grained aluminium alloy and its preparing method |
| CN102554192A (en) * | 2012-01-11 | 2012-07-11 | 沈阳铸造研究所 | Manufacturing method of highly-conductive and heat-resisting electrode cross beam component |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152753A (en) * | 2014-07-08 | 2014-11-19 | 蚌埠市英路光电有限公司 | Aluminium-based composite heat dissipation material containing modified wood ash for LED |
| CN105344977A (en) * | 2015-10-10 | 2016-02-24 | 广西大美电器有限公司 | Casting method for bearing ring for solar water heater rotary support |
| CN105256181A (en) * | 2015-11-26 | 2016-01-20 | 王栋 | Preparation method of environment-friendly electric car cable aluminum alloy rod |
| CN106282705A (en) * | 2016-08-31 | 2017-01-04 | 江苏威创能源设备有限公司 | A kind of alloy material for manufacturing expansion joint end pipe and preparation method thereof |
| CN106626987A (en) * | 2017-01-09 | 2017-05-10 | 正新橡胶（中国）有限公司 | Tire nail for civil use and application of tire nail |
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Application publication date: 20140625 |
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