CN108300909A - Die casting contains Ca and Cr aluminium alloys and its processing technology with corrosion-resistant - Google Patents

Die casting contains Ca and Cr aluminium alloys and its processing technology with corrosion-resistant Download PDF

Info

Publication number
CN108300909A
CN108300909A CN201810219594.3A CN201810219594A CN108300909A CN 108300909 A CN108300909 A CN 108300909A CN 201810219594 A CN201810219594 A CN 201810219594A CN 108300909 A CN108300909 A CN 108300909A
Authority
CN
China
Prior art keywords
casting
alloy
corrosion
die casting
degree
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201810219594.3A
Other languages
Chinese (zh)
Inventor
杨长江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Xianzhi Technology Co Ltd
Guangzhou Yuzhi Technology Co Ltd
Original Assignee
Guangzhou Xianzhi Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Xianzhi Technology Co Ltd filed Critical Guangzhou Xianzhi Technology Co Ltd
Priority to CN201810219594.3A priority Critical patent/CN108300909A/en
Publication of CN108300909A publication Critical patent/CN108300909A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/02Making non-ferrous alloys by melting
    • C22C1/026Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/02Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon

Abstract

The invention discloses die casting to contain Ca and Cr aluminium alloys and its processing technology with corrosion-resistant.According to weight percent, the ingredient of the alloy is:Ca:0.5‑1.0wt.%,Cr:1.6‑2.4wt.%;Pd:0.8‑1.2wt.%,Ge:0.5 0.8wt.%, Sb:0.2‑0.5wt.%,Be:0.4 0.8wt.%, surplus are aluminium.The kalzium metal has excellent die casting performance, and has excellent corrosion resistance.It is expected that there is positive meaning with promotion to the development of the even entire Die Casting Industry of aluminum alloy die-casting technological and its technology.

Description

Die casting contains Ca and Cr aluminium alloys and its processing technology with corrosion-resistant
Technical field
The present invention relates to technical field of alloy, specifically, being related to a kind of kalzium metal.
Background technology
Aluminium alloy is the new material inexpensive, energy saving, of fine quality that domestic and international application is increasingly extensive in recent decades.It has anti- It is excellent that tensile strength and hardness are high, damping and amortization is good, wearability is good, friction coefficient is small, friction Temperature Rise is low, material and manufacturing cost are cheap etc. Point.Meanwhile also there is good processing performance, die casting is cannot be only used for, sand mold, metal mold, graphite mould, continuous casting are applied also for Deng.Cast aluminium alloy gold is to fill casting mold with molten metal, obtains the aluminium alloy of variously-shaped part blank.Cast aluminium alloy gold has Complex-shaped part can be made in good casting character;Huge optional equipment is not needed;With saving metal, reduce It cost, the advantages that reducing work hours, is used widely in aircraft industry and civilian industry.With low-density, specific strength is higher, resists Corrosion and casting manufacturability are good, and the advantages that small is limited by structural design of fittings.Most of be heat-treated is strengthened with reaching Alloy eliminates the purpose of casting internal stress, stabilizing tissue and accessory size.
Aluminium alloy is widely used in fascia, seat support, gear box casing, direction control system by developed country On the parts such as component, engine bonnet, car door, engine cylinder body, frame.Auto parts and components, Ke Yixian are manufactured with aluminium alloy It writes and mitigates car weight, reduce oil consumption, reduce exhaust emissions amount, improve the integrated level of parts, improve the flexibility etc. of Automobile Design. Aluminium alloy compression casting is most light in all diecasting alloys, is the light weight material in automobile of pole competitiveness, a large amount of aluminum alloy spare part It is produced, to replace modeling, aluminium alloy or even steel components.With the development of technology, application of the aluminium alloy in automotive field Range can be wider.
The progress of new technology has pushed the development of the material technologies such as the smelting of aluminium, alloying, simultaneously because aluminium alloy makes It is constantly challenged with field, new requirement is constantly proposed to the performance of aluminium and aluminium alloy, therefore aluminium alloy is also evolving To adapt to the needs of industrial development.Although China's aluminium alloy compression casting industry has prodigious resources advantage, most at present Aluminium alloy compression casting enterprise, be all made of traditional aluminium diecasting alloy.The die-casting process of this kind of traditional material is largely led to Process goal could finally be realized by crossing a large amount of, macrocyclic repetition test modification.Therefore in casting mold development cycle, cast design matter Amount and its processing quality etc. realized relatively are difficult to guarantee so that enterprise also can not obtain bigger in market with keen competition Breakthrough.
High-quality die-casting aluminium 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 for carrying out bottom property with aluminium alloy to conventional cast, to aluminium alloy compression casting work The development of the even entire Die Casting Industry of skill and its technology has positive meaning with promotion.Oneself external die casting through exploitation is with novel Aluminium alloy casting character and corrosion resistance can't be satisfactory.Exploitation has suitable die-casting material to be had with anticorrosion aluminium Two methods, one is alloying element is added by solution strengthening to strengthen matrix, another kind is by the way that second-phase strength is added Mutually form aluminum matrix composite.The castability that can greatly improve aluminium alloy is added in aluminium alloy as alloy element by Ca and Cr Energy and corrosion resistance.With the rapid industrial development in our country, exploitation die casting has become certainty with novel aluminum alloy.
But aluminium belongs to active element, be easy to carry out violent reaction with oxygen or nitrogen under atmospheric environment and Generate burning or explosion.During aluminum alloy smelting, the oxidizing fire of aluminium 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 defect 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 damage 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 aluminium 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 The purpose of strong oxidation and nitridation, and the tendency of oxidizing fire of kalzium metal during following process substantially reduces, to Improve the process safety of kalzium metal.
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 of row melting contains Ca and Cr aluminium alloys and its processing technology with corrosion-resistant.And it is finally produced in the alloy of this temperature range melting Product not only have excellent die casting performance, and corrosion resistance is also significantly larger than existing aluminium alloy.This method also has production It is at low cost, the characteristics of being convenient for mass producing.
To achieve the goals above, the present invention adopts the following technical scheme that:
A kind of corrosion-resistant aluminium alloy containing Ca and Cr of die casting.By weight percentage, the group of alloy becomes:Ca: 0.5- 1.0wt.%,Cr:1.6-2.4wt.%;Pd:0.8-1.2wt.%,Ge:0.5-0.8wt.%, Sb:0.2-0.5wt.%, Be:0.4- 0.8wt.%, surplus are aluminium.The kalzium metal is in fusion process because the weight for volatilizing and forming the reasons such as clinker and losing exists 1.0-3.0wt.% or so.
The preparation method of the corrosion-resistant aluminium alloy containing Ca and Cr of above-mentioned die casting, includes the following steps:The original that will as above match Material is added in the electric induction furnace of atmosphere protection, and uses silicon carbide crucible;Sensing heating is molten to 700-800 degree formation alloy Liquid, and be sufficiently stirred 10 minutes or so using electromagnetic agitation effect;Alloy liquid is stood after ten minutes in the heat preservation of 700-800 degree It is cast in the same level equipment of heat top and carries out semi-continuous casting into required side's ingot and billet, it is 5-10m/ that ingot casting, which moves down speed, min.The ingot casting can prepare the kalzium metal casting of complicated shape as cast raw material for the compression casting of subsequent handling; The last heat treatment procedure of these casting is:Vacuum solid solution handles 260 degree, 2.4 hours;Vacuum aging handles 180 degree, and 1.9 is small When.
Compared with prior art, the present invention has the advantages that:
(1)Patent of the present invention is directed to the state bad currently used for the cold chamber die casting performance and corrosion resistance of aluminium diecasting alloy Provide a kind of novel materialogy solution.The alloy has extremely excellent flame retardant property, can reach in 700-800 5 hours are stood without significantly burning under atmospheric environment in temperature range.Liquid alloy is being stirred, is being blown During melt treatment, after its skin covering of the surface is destroyed because being vigorously stirred, energy rapid regeneration successfully hinders the burning of alloy.And The kalzium metal 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 aluminium diecasting alloy 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 aluminium diecasting alloy 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 prodigious surface dressing work load is brought, increase production cost.Die casting aluminium provided by the invention closes Gold, not only significantly improves the die casting yield rate of aluminum products, but also successfully can be less than the ultrathin aluminium of 0.08mm by die casting thickness Product.
(3)The product also has excellent mechanical property, and tensile strength can reach 580-640Mpa, and conventional cast is used The tensile strength of aluminium alloy maintains 320Mpa or less.Under oceanic atmosphere, the corrosion rate of the material is 3.5 × 10-4mm/ Year.Thus under marine climate, which can use safely 20 years or more occurs without apparent corrosion phenomenon.In addition, The material reduces 2-3% or so than the density of traditional acieral.
Specific implementation mode
Embodiment 1
One kind is in the corrosion-resistant aluminium alloy containing Ca and Cr of 750 degree of melting die casting.By weight percentage, the chemical composition of alloy For:Ca: 0.8wt.%,Cr:1.9wt.%;Pd:1.0wt.%,Ge:0.6wt.%, Sb:0.3wt.%, Be:0.5wt.%, surplus are Aluminium.The preparation method of alloy:As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses silicon carbide earthenware Crucible;Sensing heating forms alloy solution to 750 degree, and is sufficiently stirred 10 minutes or so using electromagnetic agitation effect;By aluminium alloy Body kept the temperature at 750 degree standing be cast to after ten minutes in the same level equipment of heat top carry out semi-continuous casting at required side's ingot and Billet, it is 8m/min that ingot casting, which moves down speed,.The ingot casting can be prepared as cast raw material for the compression casting of subsequent handling The kalzium metal casting of complicated shape;The last heat treatment procedure of these casting is:Vacuum solid solution handles 260 degree, 2.4 hours; Vacuum aging processing 180 degree, 1.9 hours.
The novel aluminium diecasting alloy 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 The low equal technical barriers of empty and loose apparent product yield rate.Although existing aluminium diecasting alloy 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 prodigious surface dressing work load, increase production cost.Pack alloy provided by the invention, no It only significantly improves the die casting yield rate of aluminum products, and successfully can be less than the ultrathin aluminum products of 0.08mm by die casting thickness. The product also has excellent mechanical property, and tensile strength can reach 584Mpa, and the tension of conventional cast aluminium alloy is strong Degree maintains 320Mpa or less.Under oceanic atmosphere, the corrosion rate of the material is 3.5 × 10-4Mm/.Thus in ocean Under weather, which can use safely 20 years or more occurs without apparent corrosion phenomenon.In addition, the material compares conventional aluminum The density of based alloy reduces by 2.5% or so.And the kalzium metal loses in fusion process because of the reasons such as volatilization and formation clinker Weight be less than 1.6wt.% or so.
Embodiment 2
One kind is in the corrosion-resistant aluminium alloy containing Ca and Cr of 770 degree of melting die casting.By weight percentage, the chemical composition of alloy For:Ca: 0.8wt.%,Cr:2.1wt.%;Pd:0.9wt.%,Ge:0.6wt.%, Sb:0.3wt.%, Be:0.5wt.%, surplus are Aluminium.The preparation method of alloy:As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses silicon carbide earthenware Crucible;Sensing heating forms alloy solution to 770 degree, and is sufficiently stirred 10 minutes or so using electromagnetic agitation effect;By aluminium alloy Body kept the temperature at 770 degree standing be cast to after ten minutes in the same level equipment of heat top carry out semi-continuous casting at required side's ingot and Billet, it is 8m/min that ingot casting, which moves down speed,.The ingot casting can be prepared as cast raw material for the compression casting of subsequent handling The kalzium metal casting of complicated shape;The last heat treatment procedure of these casting is:Vacuum solid solution handles 260 degree, 2.4 hours; Vacuum aging processing 180 degree, 1.9 hours.
The novel aluminium diecasting alloy 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 The low equal technical barriers of empty and loose apparent product yield rate.Although existing aluminium diecasting alloy 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 prodigious surface dressing work load, increase production cost.Pack alloy provided by the invention, no It only significantly improves the die casting yield rate of aluminum products, and successfully can be less than the ultrathin aluminum products of 0.08mm by die casting thickness. The product also has excellent mechanical property, and tensile strength can reach 598Mpa, and the tension of conventional cast aluminium alloy is strong Degree maintains 320Mpa or less.Under oceanic atmosphere, the corrosion rate of the material is 3.5 × 10-4Mm/.Thus in ocean Under weather, which can use safely 20 years or more occurs without apparent corrosion phenomenon.In addition, the material compares conventional aluminum The density of based alloy reduces by 2.5% or so.And the kalzium metal loses in fusion process because of the reasons such as volatilization and formation clinker Weight be less than 1.2wt.% or so.
Embodiment 3
One kind is in the corrosion-resistant aluminium alloy containing Ca and Cr of 790 degree of melting die casting.By weight percentage, the chemical composition of alloy For:Ca: 0.9wt.%,Cr:2.1wt.%;Pd:0.9wt.%,Ge:0.6wt.%, Sb:0.3wt.%, Be:0.5wt.%, surplus are Aluminium.The preparation method of alloy:As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses silicon carbide earthenware Crucible;Sensing heating forms alloy solution to 790 degree, and is sufficiently stirred 10 minutes or so using electromagnetic agitation effect;By aluminium alloy Body kept the temperature at 790 degree standing be cast to after ten minutes in the same level equipment of heat top carry out semi-continuous casting at required side's ingot and Billet, it is 8m/min that ingot casting, which moves down speed,.The ingot casting can be prepared as cast raw material for the compression casting of subsequent handling The kalzium metal casting of complicated shape;The last heat treatment procedure of these casting is:Vacuum solid solution handles 260 degree, 2.4 hours; Vacuum aging processing 180 degree, 1.9 hours.
The novel aluminium diecasting alloy 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 The low equal technical barriers of empty and loose apparent product yield rate.Although existing aluminium diecasting alloy 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 prodigious surface dressing work load, increase production cost.Pack alloy provided by the invention, no It only significantly improves the die casting yield rate of aluminum products, and successfully can be less than the ultrathin aluminum products of 0.08mm by die casting thickness. The product also has excellent mechanical property, and tensile strength can reach 615Mpa, and the tension of conventional cast aluminium alloy is strong Degree maintains 320Mpa or less.Under oceanic atmosphere, the corrosion rate of the material is 3.5 × 10-4Mm/.Thus in ocean Under weather, which can use safely 20 years or more occurs without apparent corrosion phenomenon.In addition, the material compares conventional aluminum The density of based alloy reduces by 2.5% or so.And the kalzium metal loses in fusion process because of the reasons such as volatilization and formation clinker Weight be less than 1.8wt.% or so.

Claims (3)

1. a kind of corrosion-resistant aluminium alloy containing Ca and Cr of die casting;According to weight percent, the ingredient of the alloy is:Ca: 0.5- 1.0wt.%,Cr:1.6-2.4wt.%;Pd:0.8-1.2wt.%,Ge:0.5-0.8wt.%, Sb:0.2-0.5wt.%, Be:0.4- 0.8wt.%, surplus are aluminium.
2. the corrosion-resistant aluminium alloy containing Ca and Cr of die casting according to claim 1, it is characterised in that include the following steps:It will be as The raw material of upper proportioning is added in the electric induction furnace of atmosphere protection, and uses silicon carbide crucible;Sensing heating is to 700-800 degree shapes It is sufficiently stirred 10 minutes or so at alloy solution, and using electromagnetic agitation effect;Alloy liquid is kept the temperature in 700-800 degree and is stood It is cast to after ten minutes in the same level equipment of heat top and carries out semi-continuous casting into required billet, it is 5- that ingot casting, which moves down speed, 10m/min。
3. the corrosion-resistant aluminium alloy containing Ca and Cr of die casting according to claim 1, it is characterised in that include following procedure of processing: The ingot casting can prepare the kalzium metal casting of complicated shape as cast raw material for the compression casting of subsequent handling;These The last heat treatment procedure of casting is:Vacuum solid solution handles 260 degree, 2.4 hours;Vacuum aging processing 180 degree, 1.9 hours.
CN201810219594.3A 2018-03-16 2018-03-16 Die casting contains Ca and Cr aluminium alloys and its processing technology with corrosion-resistant Withdrawn CN108300909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810219594.3A CN108300909A (en) 2018-03-16 2018-03-16 Die casting contains Ca and Cr aluminium alloys and its processing technology with corrosion-resistant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810219594.3A CN108300909A (en) 2018-03-16 2018-03-16 Die casting contains Ca and Cr aluminium alloys and its processing technology with corrosion-resistant

Publications (1)

Publication Number Publication Date
CN108300909A true CN108300909A (en) 2018-07-20

Family

ID=62849878

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810219594.3A Withdrawn CN108300909A (en) 2018-03-16 2018-03-16 Die casting contains Ca and Cr aluminium alloys and its processing technology with corrosion-resistant

Country Status (1)

Country Link
CN (1) CN108300909A (en)

Similar Documents

Publication Publication Date Title
CN102899539B (en) High-plasticity aluminum-silicon alloy for die casting and preparation method thereof
CN100349673C (en) Extrusion casting process for making automobile engine rack of magnesium alloy
CN109881063B (en) High-strength, high-toughness and high-modulus die-casting magnesium alloy and preparation method thereof
CN102943192A (en) Aluminum piston manufacturing method
CN103846409B (en) A kind of preparation method of the fibre reinforced composites piston peculiar to vessel with cooling oil chamber
CN110079712B (en) Cast high-toughness die-casting aluminum-silicon alloy and preparation method and application thereof
CN103243250A (en) Formula, smelting process and application of Al-Zn-Mg-Cu alloy
CN103146962A (en) High-performance die-casting aluminum alloy for automotive body and preparation method thereof
CN102943193A (en) Grain refinement machining process of hard aluminium alloy cast ingot
CN110983120A (en) 300 MPa-grade high-strength plastic non-heat-treatment self-strengthening die-casting aluminum alloy and manufacturing method thereof
CN103334034A (en) Preparation method of gas compressor volute of turbocharger
CN104532036A (en) Special aluminum alloy for extrusion casting prepared from regenerated automobile scrap aluminum parts and preparation method thereof
CN107937764B (en) Liquid die forging high-strength and high-toughness aluminum alloy and liquid die forging method thereof
CN102366827B (en) Extrusion casting method of cylinder cover cap of magnesium alloy automobile engine
CN115418537A (en) Heat treatment-free die-casting aluminum alloy and preparation method and application thereof
CN104060183B (en) A kind of oscillating arm bracket and production method thereof
CN108220723A (en) Have the die casting Mg-Ca-In magnesium alloys of high-damping feature
CN105950929B (en) Hypereutectic Al Si alloys and magnesium alloy hybrid engine cylinder body and its casting method
CN108384995A (en) Die casting contains Ca and Mg aluminium alloys and its processing technology with high-damping
CN108251709A (en) Die casting contains Ca and Re aluminium alloys and its processing technology with high heat conduction
CN114231876B (en) Aluminum alloy cylinder body with embedded gray cast iron cylinder sleeve for secondary hot dip plating and casting method thereof
CN108300909A (en) Die casting contains Ca and Cr aluminium alloys and its processing technology with corrosion-resistant
CN105603270A (en) Die-casting aluminum alloy for engine components and production method of die-casting aluminum alloy
CN107868897A (en) A kind of magnesium lithium alloy with extremely excellent die casting performance
CN106868358A (en) A kind of engine cylinder cover composite

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20180720