CN1869266A - Mognesium alloy - Google Patents
Mognesium alloy Download PDFInfo
- Publication number
- CN1869266A CN1869266A CN 200610040346 CN200610040346A CN1869266A CN 1869266 A CN1869266 A CN 1869266A CN 200610040346 CN200610040346 CN 200610040346 CN 200610040346 A CN200610040346 A CN 200610040346A CN 1869266 A CN1869266 A CN 1869266A
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- controlled
- magnesium
- magnesium alloy
- refining
- temperature
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- 239000000956 alloy Substances 0.000 title description 10
- 229910045601 alloy Inorganic materials 0.000 title description 8
- 239000011777 magnesium Substances 0.000 claims abstract description 38
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 27
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 9
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 7
- 229910052790 beryllium Inorganic materials 0.000 abstract description 8
- 239000011701 zinc Substances 0.000 abstract description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 7
- PWOSZCQLSAMRQW-UHFFFAOYSA-N beryllium(2+) Chemical compound [Be+2] PWOSZCQLSAMRQW-UHFFFAOYSA-N 0.000 abstract description 4
- 230000003064 anti-oxidating effect Effects 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 31
- 229910052749 magnesium Inorganic materials 0.000 description 31
- 239000007788 liquid Substances 0.000 description 26
- 238000007670 refining Methods 0.000 description 26
- 239000000203 mixture Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 239000004411 aluminium Substances 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 11
- 238000004458 analytical method Methods 0.000 description 10
- 238000005070 sampling Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 8
- 230000004907 flux Effects 0.000 description 8
- 239000002893 slag Substances 0.000 description 8
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 7
- 238000004512 die casting Methods 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 238000010907 mechanical stirring Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 5
- 238000005242 forging Methods 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010309 melting process Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 5
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 4
- 239000003818 cinder Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000010436 fluorite Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000010792 warming Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
- Forging (AREA)
Abstract
The invention relates to a new type magnesium alloy that contains Al 6.6-7.4%, Mn 0.20-0.28%, Zn 1.0-1.3%, Si less than 0.08%, Fe less than 0.004%, Cu less than 0.025%, Ni less than 0.002%, Be 0.0005-0.0015%, and the rest is Mg. The invention is mainly improving the zinc content to improve the tensile strength and broken specific elongation. The equal tensile strength could be 378MPa, and the yield strength could be 136MPa, and broken specific elongation is 12%. It adds beryllium element and improves the anti oxidation.
Description
Technical field
The invention belongs to the magnesium alloy production technical field, relate in particular to a kind of tensile strength height, the novel magnesium alloy of good extending performance.
Background technology
At present, the industrial melting of magnesium alloy makes to such an extent that relevant mechanical performance index such as its tensile strength of magnesium alloy, yield strength and elongation after fracture is all lower, often can not satisfy some various die casts of production later stage, thermal treatment or high speed cutting that this class index is had higher requirements and process forging process.Especially in to magnesium alloy forged tensile process, lower tensile strength and elongation after fracture make magnesium alloy rupture easily, cause the difficulty of processing.With the disclosed a kind of magnesium alloy of CN1670231 is that (moiety and weight percent content thereof are Al:6.5-7.5%, Mn:0.20-0.70%, Zn:0.40-1.0%, Si to example: Fe≤0.10%: Cu≤0.004%: Ni≤0.05% :≤0.010%, its remaining prestige or influence Mg), its tensile strength under the die casting state is 280Mpa, yield strength is 136Mpa, elongation after fracture 9%; Though can satisfy the technical requirements of forging automotive hub, yet tensile strength and elongation after fracture are still lower, the difficult satisfied forging production technology that this class mechanical property is had requirements at the higher level.
Summary of the invention
Technical problem to be solved by this invention provides tensile strength and all higher novel magnesium alloy of elongation after fracture under a kind of die casting state, its average tensile strength 378Mpa under the die casting state, yield strength 136Mpa, elongation after fracture 12%, the above-mentioned mechanical property that can further satisfy magnesium alloy materials has the more forging production technique of hi-tech requirement.
In order to solve the problems of the technologies described above, main technical schemes of the present invention is: a kind of novel magnesium alloy, the weight percent of its component is: Al:6.6-7.4%, Mn:0.20-0.28%, Zn:1.0-1.3%, Si: Fe＜0.08%: Cu≤0.004%: Ni＜0.025%: Be:0.0005-0.0015%＜0.002%,, surplus is Mg.
The melting technology major technique step that realizes a kind of novel magnesium alloy technique scheme of the present invention is as follows: prepare burden earlier, the AZ91D type magnesium alloy processing waste that guarantees to be the industrial standards value with component percentage composition value in the batching is as foundry returns, and the control foundry returns accounts for whole melting technology 60% of the total amount that feeds intake.Also comprise industrial magnesium ingot, aluminium ingot, zinc ingot metal, manganese powder and aluminium beryllium master alloy in the batching.Magnesium ingot, aluminium ingot, zinc ingot metal are dropped in the crucible of scarfing cinder and add the piece flux melts, drop into foundry returns during fritting and add insulating covering agent, the whole melting process time is controlled at 2-6h, and magnesium liquid outlet temperature is controlled at 670-690 ℃; Add the refining powder simultaneously with manganese powder carries out initial refining after fusing finishes, the time is controlled at 25min, and temperature is controlled at 680-730 ℃, finishes then magnesium liquid composition to be carried out sampling analysis, qualifiedly then enters next procedure, defectively carries out the composition adjustment; Add insulating covering agent and fluorite powder when magnesium liquid continues to be warming up to 730-750 ℃ afterwards, carry out secondary refining slag absorbing operation, refining time is controlled at 40min, and temperature is controlled at 730-750 ℃, leaves standstill cooling thereafter, make flux and inclusion sedimentation, time is controlled at 60min, and temperature is 620-660 ℃ of end, and then intensification, add aluminium beryllium master alloy up to its all fusing end when temperature reaches 650-690 ℃, the melting process temperature is controlled at 650-690 ℃ all the time.Then composition analysis is carried out in magnesium liquid sampling in the stove, come out of the stove after qualified.At last under 640-660 ℃ of temperature condition, and cast in protective atmosphere, the time generally was controlled at 40-60 minute.
The present invention mainly is the content that passes through to improve zinc element in the component in existing process for smelting magnesium alloy, and tensile strength and the elongation after fracture of magnesium alloy under the die casting state is greatly improved; Its average tensile strength 378Mpa, yield strength 136Mpa, elongation after fracture 12%.Compare the above-mentioned mechanical property that can further satisfy with the disclosed magnesium alloy of CN1670231 the more forging production technique of hi-tech requirement is arranged magnesium alloy materials; And added beryllium element in the component, further increased the oxidation-resistance of magnesium alloy again.
Embodiment
Be further described below in conjunction with the realization of specific embodiment main technical schemes of the present invention:
Embodiment 1:
The AZ91D type magnesium alloy processing waste that is the industrial standards value with component percentage composition value is as foundry returns, and the control foundry returns accounts for whole melting technology 60% of the total amount that feeds intake.With magnesium ingot 375Kg, aluminium ingot 18.6Kg, zinc ingot metal 7.9Kg drop into after pre-treatment in the crucible of scarfing cinder, add piece flux, add foundry returns 606kg when treating semi-molten, continue fusing, add insulating covering agent in the process to prevent burning, magnesium liquid outlet temperature is controlled at 670 ℃, and the time is controlled at 3h.Fusing finish the back under 670 ℃ of temperature condition in the magnesium liquid nitrogen blowing, and mechanical stirring adds manganese powder and refining agent simultaneously and carries out initial refining, refining time is controlled at 25min, temperature is controlled at 680 ℃ during the refining end.Magnesium liquid composition to initial refining carries out sampling analysis, if qualifiedly carry out next procedure, if defectively carry out the composition adjustment.When magnesium liquid continued to be warming up to 730 ℃ afterwards, inflated with nitrogen, and mechanical stirring added insulating covering agent simultaneously and the fluorite powder carries out secondary refining, and refining time is controlled at 40min, leaves standstill 5min after finishing and carries slag, put forward slag end back temperature and were controlled at 730 ℃.Gained magnesium liquid is left standstill cooling in 60 minutes, make flux and inclusion sedimentation, the final temp that leaves standstill when finishing is controlled at 620 ℃.Heat up then, when temperature reaches 650 ℃, add aluminium beryllium master alloy 1.5Kg to its all fusing end, the melting process temperature is controlled at 650 ℃.Then composition analysis is carried out in magnesium liquid sampling in the stove, come out of the stove after qualified.Magnesium liquid after coming out of the stove is cast under protective atmosphere, and pouring temperature is controlled at 630 ℃.The weight percent of the chemical composition in the magnesium alloy that makes like this is Al:7.2%, Mn:0.25%, Zn:1.1%, Si: Cu≤0.20%: Ni≤0.08%: Be:0.0005-0.0015%≤0.010%,, all the other are Mg.Tensile strength under the die casting attitude of the present invention is 365Mp, and yield strength is 136Mp, and elongation after fracture reaches 11%.
Introducing beryllium element in component of the present invention mainly is the oxidation-resistance that improves magnesium alloy, and as long as guarantees that the weight percentage of beryllium element in component is 0.0005-0.0015%.Therefore in the aluminium beryllium master alloy, the ratio of beryllium mainly is to come actual determining to adjust (ratio generally is controlled at 0.9～1.2%) with trace according to its above-mentioned proportion in component of the present invention.Following examples are all like this.
Since secondary refining magnesium liquid is later left standstill carry slag and after the process of sedimentation removal of contamination in, have part material and be eliminated, add the reason of high temperature oxidation, the yield rate of making is between 95%～96%.Therefore certain composition when sampling analysis, might occur and not meet the situation that the predetermined preparation of alloy requires, at this moment should be according to predetermined prescription, the melting once more of some raw material of corresponding adding is till sampling analysis is qualified.For following embodiment above-mentioned requirement is arranged all.
Embodiment 2:
The AZ91D type magnesium alloy processing waste that is the industrial standards value with component percentage composition value is as foundry returns, and the control foundry returns accounts for whole melting technology 60% of the total amount that feeds intake.With magnesium ingot 376Kg, aluminium ingot 16.6Kg, zinc ingot metal 8.5Kg drop into after pre-treatment in the crucible of scarfing cinder, add piece flux, add foundry returns 606kg when treating semi-molten, continue fusing, add insulating covering agent in the process to prevent burning, magnesium liquid outlet temperature is controlled at 680 ℃, and the time is controlled at 4h.Fusing finish the back under 680 ℃ of temperature condition in the magnesium liquid nitrogen blowing, and mechanical stirring adds manganese powder and refining agent simultaneously and carries out initial refining, refining time is controlled at 25min, temperature is controlled at 700 ℃ during the refining end.Magnesium liquid composition to initial refining carries out sampling analysis, if qualifiedly carry out next procedure, if defectively carry out the composition adjustment.When magnesium liquid continued to be warming up to 740 ℃ afterwards, inflated with nitrogen, and mechanical stirring added insulating covering agent simultaneously and the fluorite powder carries out secondary refining, and refining time is controlled at 40min, leaves standstill 5min after finishing and carries slag, put forward slag end back temperature and were controlled at 730 ℃.Gained magnesium liquid is left standstill cooling in 60 minutes, make flux and inclusion sedimentation, the final temp that leaves standstill when finishing is controlled at 620 ℃.Heat up then, when temperature reaches 650 ℃, add aluminium beryllium master alloy 1.5Kg to its all fusing end, the melting process temperature is controlled at 650 ℃.Then composition analysis is carried out in magnesium liquid sampling in the stove, come out of the stove after qualified.Magnesium liquid after coming out of the stove is cast under protective atmosphere, and pouring temperature is controlled at 630 ℃.The weight percent of the chemical composition in the magnesium alloy that makes like this is Al:7.0%, Mn:0.25%, Zn:1.2%, Si: Cu≤0.20%: Ni≤0.08%: Be:0.0005-0.0015%≤0.010%,, all the other are Mg.Tensile strength under the die casting attitude of the present invention is 375Mp, and yield strength is 136Mp, and elongation after fracture reaches 12%.
Embodiment 3:
The AZ91D type magnesium alloy processing waste that is the industrial standards value with component percentage composition value is as foundry returns, and the control foundry returns accounts for whole melting technology 60% of the total amount that feeds intake.With magnesium ingot 376Kg, aluminium ingot 14.2Kg, zinc ingot metal 9.4Kg drop into after pre-treatment in the crucible of scarfing cinder, add piece flux, add foundry returns 606kg when treating semi-molten, continue fusing, add insulating covering agent in the process to prevent burning, magnesium liquid outlet temperature is controlled at 690 ℃, and the time is controlled at 6h.Fusing finish the back under 690 ℃ of temperature condition in the magnesium liquid nitrogen blowing, and mechanical stirring adds manganese powder and refining agent simultaneously and carries out initial refining, refining time is controlled at 25min, temperature is controlled at 730 ℃ during the refining end.Magnesium liquid composition to initial refining carries out sampling analysis, if qualifiedly carry out next procedure, if defectively carry out the composition adjustment.When magnesium liquid continued to be warming up to 750 ℃ afterwards, inflated with nitrogen, and mechanical stirring added insulating covering agent simultaneously and the fluorite powder carries out secondary refining, and refining time is controlled at 40min, leaves standstill 5min after finishing and carries slag, put forward slag end back temperature and were controlled at 730 ℃.Gained magnesium liquid is left standstill cooling in 60 minutes, make flux and inclusion sedimentation, the final temp that leaves standstill when finishing is controlled at 620 ℃.Heat up then, when temperature reaches 650 ℃, add aluminium beryllium master alloy 1.5Kg to its all fusing end, the melting process temperature is controlled at 650 ℃.Then composition analysis is carried out in magnesium liquid sampling in the stove, come out of the stove after qualified.Magnesium liquid after coming out of the stove is cast under protective atmosphere, and pouring temperature is controlled at 630 ℃.The weight percent of the chemical composition in the magnesium alloy that makes like this is Al:6.8%, Mn:0.25%, Zn:1.3%, Si: Cu≤0.20%: Ni≤0.08%: Be:0.0005-0.0015%≤0.010%,, all the other are Mg.Tensile strength under the die casting attitude of the present invention is 385Mp, and yield strength is 136Mp, and elongation after fracture reaches 12%.
Claims (1)
1. novel magnesium alloy, the weight percent content that it is characterized in that component is: Al:6.6-7.4%, Mn:0.20-0.28%, Zn:1.0-1.3%, Si: Fe＜0.08%: Cu≤0.004%: Ni＜0.025%: Be:0.0005-0.0015%＜0.002%,, surplus is Mg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610040346XA CN100396807C (en) | 2006-05-17 | 2006-05-17 | Mognesium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610040346XA CN100396807C (en) | 2006-05-17 | 2006-05-17 | Mognesium alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1869266A true CN1869266A (en) | 2006-11-29 |
| CN100396807C CN100396807C (en) | 2008-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610040346XA Active CN100396807C (en) | 2006-05-17 | 2006-05-17 | Mognesium alloy |
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| Country | Link |
|---|---|
| CN (1) | CN100396807C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660704A (en) * | 2012-05-28 | 2012-09-12 | 苏州云海镁业有限公司 | Flame-retardant magnesium alloy |
| CN104015009A (en) * | 2014-06-13 | 2014-09-03 | 广东长盈精密技术有限公司 | Method for manufacturing middle frames and rear covers of mobile phones |
| CN104109791A (en) * | 2014-07-30 | 2014-10-22 | 吴江市液铸液压件铸造有限公司 | Die casting technique of magnesium-aluminum-zinc alloy |
| CN106801175A (en) * | 2016-12-23 | 2017-06-06 | 宁波星源机械有限公司 | A kind of low-cost high-strength magnesium alloy materials |
| CN107177764A (en) * | 2016-03-10 | 2017-09-19 | 中国科学院金属研究所 | A kind of high strength and low cost cast magnesium alloy and preparation method thereof |
| CN111719074A (en) * | 2020-07-20 | 2020-09-29 | 哈尔滨吉星机械工程有限公司 | Preparation method for high-entropy alloy particle reinforced magnesium-based composite lost foam casting |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016002830B4 (en) * | 2016-03-09 | 2020-03-05 | TWI GmbH | Manganese-containing raw material for the production of a light metal alloy, process for its production and its use, produced by powder metallurgy |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1670231A (en) * | 2004-03-16 | 2005-09-21 | 焦作市黄河镁合金有限公司 | Magnesium alloy |
-
2006
- 2006-05-17 CN CNB200610040346XA patent/CN100396807C/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660704A (en) * | 2012-05-28 | 2012-09-12 | 苏州云海镁业有限公司 | Flame-retardant magnesium alloy |
| CN104015009A (en) * | 2014-06-13 | 2014-09-03 | 广东长盈精密技术有限公司 | Method for manufacturing middle frames and rear covers of mobile phones |
| CN104109791A (en) * | 2014-07-30 | 2014-10-22 | 吴江市液铸液压件铸造有限公司 | Die casting technique of magnesium-aluminum-zinc alloy |
| CN104109791B (en) * | 2014-07-30 | 2016-08-24 | 吴江市液铸液压件铸造有限公司 | A kind of extrusion process of Mg-Al-Zn Alloy |
| CN107177764A (en) * | 2016-03-10 | 2017-09-19 | 中国科学院金属研究所 | A kind of high strength and low cost cast magnesium alloy and preparation method thereof |
| CN106801175A (en) * | 2016-12-23 | 2017-06-06 | 宁波星源机械有限公司 | A kind of low-cost high-strength magnesium alloy materials |
| CN111719074A (en) * | 2020-07-20 | 2020-09-29 | 哈尔滨吉星机械工程有限公司 | Preparation method for high-entropy alloy particle reinforced magnesium-based composite lost foam casting |
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| Publication number | Publication date |
|---|---|
| CN100396807C (en) | 2008-06-25 |
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Address after: 211212 No. 11 Kaiping Road, Dongping Street, Lishui District, Nanjing City, Jiangsu Province Patentee after: Baowu Magnesium Industry Technology Co.,Ltd. Address before: 211224 Crystal Bridge, Lishui County, Jiangsu, Nanjing Patentee before: NANJING YUNHAI SPECIAL METALS Co.,Ltd. |