CN108220723A - Have the die casting Mg-Ca-In magnesium alloys of high-damping feature - Google Patents
Have the die casting Mg-Ca-In magnesium alloys of high-damping feature Download PDFInfo
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- CN108220723A CN108220723A CN201810210767.5A CN201810210767A CN108220723A CN 108220723 A CN108220723 A CN 108220723A CN 201810210767 A CN201810210767 A CN 201810210767A CN 108220723 A CN108220723 A CN 108220723A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
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Abstract
The invention discloses the die casting for having high-damping feature Mg Ca In magnesium alloys and its processing technology.According to weight percent, the ingredient of the alloy is：Ca:0.6‑1.5wt.%,In:1.6‑3.2wt.%；Sn:3.0‑4.5wt.%,Sb:0.8 1.5wt.%, Zr:0.4‑0.8wt.%,Be:0.2 0.5wt.%, surplus are magnesium.The magnesium calcium alloy has excellent die casting performance, and with excellent damping capacity.It is expected that carrying out the innovation and optimization of bottom property with magnesium alloy to conventional cast, to die casting process of magnesium alloy, the development of even entire Die Casting Industry and its technology has positive meaning with being promoted.
Description
Technical field
The present invention relates to technical field of alloy, specifically, being related to a kind of magnesium calcium alloy.
Background technology
Magnesium alloy has good light weight, machinability, corrosion resistance, damping property, dimensionally stable and impact resistance, much excellent
Matter is in other materials.These characteristics cause magnesium alloy to have application, such as a traffic and transport field in wide range of areas, electronics industry,
Medical field, war industry etc..Especially in 3C Product（Computer Computer, consumer electronics product Consumer
Electronic Product, communication class Communication）, high ferro, automobile, bicycle, aerospace, building decoration, hand
Hold that the fields such as tool, medical rehabilitation instrument application prospect is good, potentiality are big, have become following new material developing direction it
One.Magnesium alloy includes various civilian, military aircraft people's motivation parts, propeller, gear in the application field of aviation at present
Some parts of case, supporting structure and rocket, guided missile and satellite etc..With the development of magnesium alloy production technology, performance can not
Disconnected to improve, application range also can constantly expand.
By forming technology, magnesium alloy can be divided into cast magnesium alloy and wrought magnesium alloy, and the two is deposited in ingredient, structure property
In very big difference.Cast magnesium alloy is to be suitable for using magnesium as what base addition alloy element was formed with casting method production parts
Magnesium alloy.Cast magnesium alloy is mainly used for auto parts, parts clamshell and electric member etc..But the poor mobile performance of magnesium alloy
It is the significant obstacle of its application.Magnesium alloy is since its mobility is poor, and when processing thin-wall part, yield rate is low, and surface quality is poor,
Processing technology is complicated, and it is difficult to process ultra-thin walled workpieces.So that the further genralrlization of magnesium alloy is applied by very big
Limitation.
More exact description is that existing magnesium for die casting use casting flaw can be described as：(1) oxide slag inclusion.Oxygen
Change the upper surface that slag inclusion is distributed in casting more, in the airproof rotation angle position of casting mold.Fracture is mostly in canescence or yellow, through x light
Perspective is found in mechanical processing, can also be found in alkali cleaning, pickling or anodization.(2) bubble.Three casting wall inner air vents one
As it is rounded or oval, have smooth surface, usually shinny oxide skin, sometimes in oil yellow color.Surface pores, bubble
It can be found by sandblasting, internal porosity, bubble can find stomata by x-ray fluoroscopy or mechanical processing, and bubble is on exograph
Black.(3) shrinkage porosite.Magnesium Shrinkage Porosity be typically created in ingate nearby fly riser root Hou great positions, wall thickness switching at
At the thin-walled with big plane.In as cast condition, fracture is grey, is after heat treatment greyish white pale yellow or grey black.(4) it casts
Crackle.Develop along crystal boundary, be often accompanied by being segregated, be a kind of crackle formed at relatively high temperatures in the larger alloy of volume contraction and
The more complicated casting of shape is susceptible to.
With the appearance of competitive materials and development and the progress of other technologies, oneself is through affecting some traditional magnesium alloys
Market, but also huge motive force is brought to the development of magnesium industry.The progress of new technology has pushed the smelting of magnesium, alloying etc.
The development of material technology, simultaneously because being constantly challenged using field for magnesium alloy, constantly puies forward the performance of magnesium and magnesium alloy
Go out new requirement, therefore magnesium alloy is also evolving the needs to adapt to industrial development.Although China's magnesium alloy pressure-casting is industrial
With very big resources advantage, but most of magnesium alloy pressure-casting enterprise at present, using traditional magnesium for die casting use.This
The die-casting process of quasi-tradition material could finally realize technique to great extent by means of a large amount of, macrocyclic repetition test modification
Target.Therefore relatively it is difficult to guarantee in casting mold development cycle, cast design quality and its processing quality for being realized etc. so that enterprise
Also the breakthrough of bigger can not be obtained in market with keen competition.
High-quality die-casting magnesium alloy is developed for promoting China's independent research fine work new material, captures international fine work green wood
Expect that market has facilitation.The innovation and optimization of bottom property are carried out with magnesium alloy to conventional cast, to magnesium alloy pressure-casting work
The development of the even entire Die Casting Industry of skill and its technology has positive meaning with being promoted.Oneself external die casting through exploitation is with novel
Magnesium alloy cast performance and damping capacity can't be satisfactory.Exploitation, which has suitable die-casting material high resistant damping magnesium alloy, two
Kind method, one kind are to add in alloying element to strengthen matrix by solution strengthening, and another kind is by adding in second-phase strength phase
Form magnesium-based composite material.Ca and In adds in magnesium alloy the casting character that can greatly improve magnesium alloy as alloy element
And damping capacity.With the rapid industrial development in our country, exploitation die casting novel magnesium alloy has become inevitable.
But magnesium belongs to active element, be easy to carry out violent reaction with oxygen or nitrogen under atmospheric environment and
Generate burning or explosion.In magnesium alloy smelting process, the oxidizing fire of magnesium calcium melt, is usually adopted in traditional in order to prevent
With protective gas or flux protection melting.But the use of both methods all because its exist be difficult to avoid that the defects of due to by
To limitation.Such as it is also easy to produce toxic gas pollution environment and flux is caused to be mingled with and damages alloy property.And flux is mingled with appearance
Easily become the source of corrosion of product in use, accelerated material corrosion reduces the service life.In addition, villaumite in flux and
Villiaumite is volatile at high temperature to generate certain strong corrosive gases, destroys workshop, equipment and ecological environment.Currently advanced is fire-retardant
Method is the fire-retardant method of alloy, and mechanism is that specific alloying element is added during magnesium alloy smelting to influence alloy oxidation
Thermodynamical reaction and dynamic process, form dense oxidation film and nitride film with protective effect, reach and prevent alloy acute
Strong oxidation and the purpose of nitridation, and the tendency of oxidizing fire of the magnesium calcium alloy during following process substantially reduces, so as to
Improve the process safety of magnesium calcium alloy.
Invention content
The purpose of the present invention is to overcome the deficiency in the prior art, provide one kind can under 700-800 degree atmospheric conditions into
The die casting for having high-damping feature Mg-Ca-In magnesium alloys and its processing technology of row melting.And in this temperature range melting
Alloy final products not only have excellent die casting performance, and damping capacity is also significantly larger than existing magnesium alloy.This method is also
It is low with production cost, convenient for large-scale production the characteristics of.
To achieve these goals, the present invention adopts the following technical scheme that：
A kind of die casting for having high-damping feature Mg-Ca-In magnesium alloys.By weight percentage, the composition of alloy is：Ca:
0.6-1.5wt.%,In:1.6-3.2wt.%；Sn:3.0-4.5wt.%,Sb:0.8-1.5wt.%, Zr:0.4-0.8wt.%, Be:
0.2-0.5wt.%, surplus are magnesium.The magnesium calcium alloy is in fusion process because of the weight for volatilizing and forming the reasons such as clinker and losing
In 1.0-3.0wt.% or so.
The above-mentioned die casting for the having high-damping feature preparation method of Mg-Ca-In magnesium alloys, includes the following steps：It will be as
The raw material of upper proportioning is added in the electric induction furnace of atmosphere protection, and using silicon carbide crucible；Sensing heating is to 700-800 degree shapes
It is sufficiently stirred 10 minutes or so into alloy solution, and using electromagnetic agitation effect；Alloy liquid in 700-800 degree is kept the temperature and is stood
It is cast to progress semi-continuous casting in the same level equipment of heat top after ten minutes and moves down speed into required side's ingot and billet, ingot casting
For 10-20m/min.The ingot casting can prepare the magnesium calcium of complicated shape as cast raw material for the compression casting of subsequent handling
Alloy-steel casting；The last heat treatment procedure of these casting is：Vacuum solid solution handles 280 degree, 2.5 hours；Vacuum aging processing 185
Degree, 1.6 hours.
Compared with prior art, the present invention has the advantages that：
（1）Patent of the present invention is carried for the state bad currently used for the cold chamber die casting performance and damping capacity of magnesium for die casting use
A kind of novel materialogy solution is supplied.The alloy has extremely excellent flame retardant property, can reach in 700-800 temperature
5 hours are stood without significantly burning under atmospheric environment in the range of degree.It is molten being stirred, blowing etc. to liquid alloy
In body processing procedure, after its skin covering of the surface is destroyed because being vigorously stirred, energy rapid regeneration successfully hinders the burning of alloy.It and should
Magnesium calcium alloy is in fusion process because the weight for volatilizing and forming the reasons such as clinker and losing is less than 3.0wt.% or so.
（2）The novel magnesium for die casting use of this patent design has good fluidity, and filling performance is favourable, shrinkage cavity formability
It is small, the advantages that molten metal is inspiratory small.With low liquid-solid phase solidification temperature range, hot cracking tendency is big when can solve to cast,
Casting cavity is low with loose apparent product yield rate to wait technical barriers.Although existing magnesium for die casting use is easy to die casting, but right
For thin wall of the thickness less than 1mm, casting fluidity is insufficient.Common problem is that yields is low, appearance of surface
Quality defect, surface is susceptible to the casting flaws such as streamline trace, spot, loose, it is difficult to ensure that product surface is bright and clean smooth
Quality requirement, and very big surface dressing work load is brought, increase production cost.Die casting magnesium provided by the invention closes
Gold, not only significantly improves the die casting yield rate of magnesium product, but also successfully can be less than the ultrathin magnesium of 0.05mm by die casting thickness
Product.
（3）The product also has excellent mechanical property, and tensile strength can reach 400-480Mpa, and conventional cast is used
The tensile strength of magnesium alloy maintains below 320Mpa.At room temperature, the damped coefficient of the material（SDC）60-68 can be reached.
And the damped coefficient of common magnesium for die casting use is usually less than 38%.In addition, the material reduces 2- than the density of traditional magnesium base alloy
4% or so.Thus, which will generate significant effect for shock-damping structure part to be estimated.
Specific embodiment
Embodiment 1
A kind of die casting Mg-Ca-In magnesium alloys for having high-damping feature in 750 degree of meltings.By weight percentage, alloy
Chemical composition is：Ca: 1.2wt.%,In:2.6wt.%；Sn:3.8wt.%,Sb:0.9wt.%, Zr:0.5wt.%, Be:
0.4wt.%, surplus are magnesium.The preparation method of alloy：As above the raw material matched is added in the electric induction furnace of atmosphere protection, and
Using silicon carbide crucible；Sensing heating forms alloy solution, and be sufficiently stirred 10 minutes left sides using electromagnetic agitation effect to 750 degree
It is right；Alloy liquid is stood to be cast to after ten minutes in the same level equipment of heat top in 750 degree of heat preservations and carries out semi-continuous casting into institute
The square ingot and billet needed, ingot casting move down speed as 12m/min.The ingot casting can regard the pressure that cast raw material is used for subsequent handling
Power casts the magnesium calcium alloy casting to prepare complicated shape；The last heat treatment procedure of these casting is：Vacuum solid solution processing 280
Degree, 2.5 hours；Vacuum aging handles 185 degree, 1.6 hours.
The novel magnesium for die casting use of this patent design has good fluidity, and filling performance is favourable, shrinkage cavity formability is small,
The advantages that molten metal is inspiratory small.With low liquid-solid phase solidification temperature range, hot cracking tendency is big when can solve to cast, casting
Empty and loose apparent product yield rate is low to wait technical barriers.Although existing magnesium for die casting use is easy to die casting, but for thickness
For thin wall of the degree less than 1mm, casting fluidity is insufficient.Common problem is that yields is low, presentation quality of surface
Not good enough, surface is susceptible to the casting flaws such as streamline trace, spot, loose, it is difficult to ensure that the bright and clean smooth quality of product surface
It is required that and bring very big surface dressing work load, increase production cost.Diecast magnesium alloy provided by the invention, no
It only significantly improves the die casting yield rate of magnesium product, and successfully can be less than the ultrathin magnesium product of 0.05mm by die casting thickness.
The product also has excellent mechanical property, and tensile strength can reach 426Mpa, and the tension of conventional cast magnesium alloy is strong
Degree maintains below 320Mpa.At room temperature, the damped coefficient of the material（SDC）65 can be reached.And common die casting is closed with magnesium
The damped coefficient of gold is usually less than 38%.In addition, the material reduces by 2.1% or so than the density of traditional magnesium base alloy.Thus, the material
Material will generate significant effect for shock-damping structure part to be estimated.The magnesium calcium alloy is in fusion process because of volatilization and formation clinker etc.
Reason and the weight lost are in 1.6wt.% or so.
Embodiment 2
A kind of die casting Mg-Ca-In magnesium alloys for having high-damping feature in 770 degree of meltings.By weight percentage, alloy
Chemical composition is：Ca: 1.2wt.%,In:2.8wt.%；Sn:3.6wt.%,Sb:1.2wt.%, Zr:0.6wt.%, Be:
0.3wt.%, surplus are magnesium.The preparation method of alloy：As above the raw material matched is added in the electric induction furnace of atmosphere protection, and
Using silicon carbide crucible；Sensing heating forms alloy solution, and be sufficiently stirred 10 minutes left sides using electromagnetic agitation effect to 770 degree
It is right；Alloy liquid is stood to be cast to after ten minutes in the same level equipment of heat top in 770 degree of heat preservations and carries out semi-continuous casting into institute
The square ingot and billet needed, ingot casting move down speed as 15m/min.The ingot casting can regard the pressure that cast raw material is used for subsequent handling
Power casts the magnesium calcium alloy casting to prepare complicated shape；The last heat treatment procedure of these casting is：Vacuum solid solution processing 280
Degree, 2.5 hours；Vacuum aging handles 185 degree, 1.6 hours.
The novel magnesium for die casting use of this patent design has good fluidity, and filling performance is favourable, shrinkage cavity formability is small,
The advantages that molten metal is inspiratory small.With low liquid-solid phase solidification temperature range, hot cracking tendency is big when can solve to cast, casting
Empty and loose apparent product yield rate is low to wait technical barriers.Although existing magnesium for die casting use is easy to die casting, but for thickness
For thin wall of the degree less than 1mm, casting fluidity is insufficient.Common problem is that yields is low, presentation quality of surface
Not good enough, surface is susceptible to the casting flaws such as streamline trace, spot, loose, it is difficult to ensure that the bright and clean smooth quality of product surface
It is required that and bring very big surface dressing work load, increase production cost.Diecast magnesium alloy provided by the invention, no
It only significantly improves the die casting yield rate of magnesium product, and successfully can be less than the ultrathin magnesium product of 0.05mm by die casting thickness.
The product also has excellent mechanical property, and tensile strength can reach 462Mpa, and the tension of conventional cast magnesium alloy is strong
Degree maintains below 320Mpa.At room temperature, the damped coefficient of the material（SDC）64 can be reached.And common die casting is closed with magnesium
The damped coefficient of gold is usually less than 38%.In addition, the material reduces by 2.8% or so than the density of traditional magnesium base alloy.Thus, the material
Material will generate significant effect for shock-damping structure part to be estimated.The magnesium calcium alloy is in fusion process because of volatilization and formation clinker etc.
Reason and the weight lost are in 1.2wt.% or so.
Embodiment 3
A kind of die casting Mg-Ca-In magnesium alloys for having high-damping feature in 790 degree of meltings.By weight percentage, alloy
Chemical composition is：Ca: 1.4wt.%,In:2.6wt.%；Sn:3.8wt.%,Sb:1.4wt.%, Zr:0.5wt.%, Be:
0.3wt.%, surplus are magnesium.The preparation method of alloy：As above the raw material matched is added in the electric induction furnace of atmosphere protection, and
Using silicon carbide crucible；Sensing heating forms alloy solution, and be sufficiently stirred 10 minutes left sides using electromagnetic agitation effect to 790 degree
It is right；Alloy liquid is stood to be cast to after ten minutes in the same level equipment of heat top in 790 degree of heat preservations and carries out semi-continuous casting into institute
The square ingot and billet needed, ingot casting move down speed as 14m/min.The ingot casting can regard the pressure that cast raw material is used for subsequent handling
Power casts the magnesium calcium alloy casting to prepare complicated shape；The last heat treatment procedure of these casting is：Vacuum solid solution processing 280
Degree, 2.5 hours；Vacuum aging handles 185 degree, 1.6 hours.
The novel magnesium for die casting use of this patent design has good fluidity, and filling performance is favourable, shrinkage cavity formability is small,
The advantages that molten metal is inspiratory small.With low liquid-solid phase solidification temperature range, hot cracking tendency is big when can solve to cast, casting
Empty and loose apparent product yield rate is low to wait technical barriers.Although existing magnesium for die casting use is easy to die casting, but for thickness
For thin wall of the degree less than 1mm, casting fluidity is insufficient.Common problem is that yields is low, presentation quality of surface
Not good enough, surface is susceptible to the casting flaws such as streamline trace, spot, loose, it is difficult to ensure that the bright and clean smooth quality of product surface
It is required that and bring very big surface dressing work load, increase production cost.Diecast magnesium alloy provided by the invention, no
It only significantly improves the die casting yield rate of magnesium product, and successfully can be less than the ultrathin magnesium product of 0.05mm by die casting thickness.
The product also has excellent mechanical property, and tensile strength can reach 475Mpa, and the tension of conventional cast magnesium alloy is strong
Degree maintains below 320Mpa.At room temperature, the damped coefficient of the material（SDC）62 can be reached.And common die casting is closed with magnesium
The damped coefficient of gold is usually less than 38%.In addition, the material reduces by 2.9% or so than the density of traditional magnesium base alloy.Thus, the material
Material will generate significant effect for shock-damping structure part to be estimated.The magnesium calcium alloy is in fusion process because of volatilization and formation clinker etc.
Reason and the weight lost are in 2.4wt.% or so.
Claims (3)
1. a kind of die casting for having high-damping feature Mg-Ca-In magnesium alloys；According to weight percent, the ingredient of the alloy is：
Ca: 0.6-1.5wt.%,In:1.6-3.2wt.%；Sn:3.0-4.5wt.%,Sb:0.8-1.5wt.%, Zr:0.4-0.8wt.%,
Be:0.2-0.5wt.%, surplus are magnesium.
2. have the die casting Mg-Ca-In magnesium alloys of high-damping feature according to claim 1, it is characterised in that including such as
Lower step：As above the raw material matched is added in the electric induction furnace of atmosphere protection, and using silicon carbide crucible；Sensing heating arrives
450-500 degree forms alloy solution, and is sufficiently stirred 10 minutes or so using electromagnetic agitation effect；By alloy liquid in 450-
500 degree of heat preservations, which stand to be cast to after ten minutes in the same level equipment of heat top, carries out semi-continuous casting into required billet, ingot casting
Speed is moved down as 10-20m/min.
3. have the die casting Mg-Ca-In magnesium alloys of high-damping feature according to claim 1, it is characterised in that comprising such as
Lower procedure of processing：The ingot casting can be closed as cast raw material for the compression casting of subsequent handling to prepare the magnesium calcium of complicated shape
Golden casting；The last heat treatment procedure of these casting is：Vacuum solid solution handles 280 degree, 2.5 hours；Vacuum aging processing 185
Degree, 1.6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810210767.5A CN108220723A (en) | 2018-03-14 | 2018-03-14 | Have the die casting Mg-Ca-In magnesium alloys of high-damping feature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810210767.5A CN108220723A (en) | 2018-03-14 | 2018-03-14 | Have the die casting Mg-Ca-In magnesium alloys of high-damping feature |
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| Publication Number | Publication Date |
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| CN108220723A true CN108220723A (en) | 2018-06-29 |
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ID=62659566
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810210767.5A Withdrawn CN108220723A (en) | 2018-03-14 | 2018-03-14 | Have the die casting Mg-Ca-In magnesium alloys of high-damping feature |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109022977A (en) * | 2018-10-20 | 2018-12-18 | 广州宇智科技有限公司 | A kind of the casting magnesium alloy and processing technology fire-retardant using liquid metal |
| CN109082571A (en) * | 2018-09-19 | 2018-12-25 | 广州宇智科技有限公司 | A kind of heat resistance and the casting magnesium alloy with liquid phase spinodal decomposition type |
| CN111926227A (en) * | 2020-08-31 | 2020-11-13 | 东华大学 | High-damping high-strength Mg-Ca-Sn magnesium alloy and preparation method thereof |
-
2018
- 2018-03-14 CN CN201810210767.5A patent/CN108220723A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109082571A (en) * | 2018-09-19 | 2018-12-25 | 广州宇智科技有限公司 | A kind of heat resistance and the casting magnesium alloy with liquid phase spinodal decomposition type |
| CN109022977A (en) * | 2018-10-20 | 2018-12-18 | 广州宇智科技有限公司 | A kind of the casting magnesium alloy and processing technology fire-retardant using liquid metal |
| CN111926227A (en) * | 2020-08-31 | 2020-11-13 | 东华大学 | High-damping high-strength Mg-Ca-Sn magnesium alloy and preparation method thereof |
| CN111926227B (en) * | 2020-08-31 | 2021-12-21 | 东华大学 | High-damping high-strength Mg-Ca-Sn magnesium alloy and preparation method thereof |
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Application publication date: 20180629 |
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