CN107955894A - A kind of mould high-strength aluminium-magnesium alloy material - Google Patents

A kind of mould high-strength aluminium-magnesium alloy material Download PDF

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Publication number
CN107955894A
CN107955894A CN201711332592.7A CN201711332592A CN107955894A CN 107955894 A CN107955894 A CN 107955894A CN 201711332592 A CN201711332592 A CN 201711332592A CN 107955894 A CN107955894 A CN 107955894A
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temperature
time
alloy material
magnesium alloy
refining
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CN201711332592.7A
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Inventor
刘浩
张君
张欢芬
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Suzhou Hao Yan Precision Mold Ltd Co
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Suzhou Hao Yan Precision Mold Ltd Co
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Priority to CN201711332592.7A priority Critical patent/CN107955894A/en
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/06Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08Alloys based on aluminium with magnesium as the next major constituent with silicon
    • 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
    • C22C1/00Making non-ferrous alloys
    • C22C1/06Making non-ferrous alloys with the use of special agents for refining or deoxidising
    • 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
    • C22F1/047Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

The invention discloses a kind of mould high-strength aluminium-magnesium alloy material, include the component of following percentage by weight:Cu:1.1 1.2%, Mg:5.3 5.6%, Si:0.2 0.25%, Zn:0.1 0.15%, Fe:0.1 0.2%, Mn:1.2 1.6%, Ti:0.6 0.7%, W:0.03 0.06%, Cr:0.02 0.04%, Zr:0.07 0.12%, La:0.06 0.08%, Sm:0.05 0.07%, Nd:0.05 0.06%, Y 0.05 0.07%, Pr:0.02 0.04%, Gd:0.01 0.03%, surplus is Al and inevitable impurity;The present invention has high intensity, hardness and corrosion resistance, can extend the service life used.

Description

A kind of mould high-strength aluminium-magnesium alloy material
Technical field
The present invention relates to mold materials technical field, and in particular to a kind of mould high-strength aluminium-magnesium alloy material.
Background technology
Aluminum alloy materials largely apply to building, civilian and industrial circle, and current industrial high-strength aluminum alloy material is very More different requirements, such as require high intensity, high tenacity and good machine-shaping property, highly corrosion resistant ability, have it is a variety of Surface treatment properties or good heat treatment performance etc., existing high-strength aluminum alloy material only meet above-mentioned partial condition, it is impossible to Meet above-mentioned all conditions at the same time, especially serious wear in use, the problems such as service life is short;This also causes aluminium Alloy material is restricted in use, influences the usage amount of height aluminium alloy.
The content of the invention
It is an object of the invention to provide a kind of mould high-strength aluminium-magnesium alloy material, there is high intensity, hardness and resistance to Corrosivity, can extend the service life used.
The present invention is to achieve these goals, there is provided technical solution is:A kind of mould high-strength aluminium-magnesium alloy material, bag Include the component of following percentage by weight:Cu:1.1-1.2%, Mg:5.3-5.6%, Si:0.2-0.25%, Zn:0.1- 0.15%, Fe:0..1-0.2%, Mn:1.2-1.6%, Ti:0.6-0.7%, W:0.03-0.06%, Cr:0.02- 0.04%, Zr:0.07-0.12%, La:0.06-0.08%, Sm:0.05-0.07%, Nd:0.05-0.06%, Y 0.05- 0.07%, Pr:0.02-0.04%, Gd:0.01-0.03%, surplus are Al and inevitable impurity.
The technical solution that further limits of the present invention is:
The foregoing component for including following percentage by weight: Cu:1.1%, Mg:5.3%, Si:0.21%, Zn:0.1%, Fe:0..11%, Mn:1.3%, Ti:0.6%, Cr:0.026%, W:0.04%, Zr:0.076%, La:0.06%, Sm: 0.055%, Nd:0.052%, Y 0.05%, Pr:0.02%, Gd:0.015%, surplus is Al and inevitable impurity.
The foregoing component for including following percentage by weight:Cu:1.2%, Mg:5.4%, Si:0.23%, Zn: 0.13%, Fe:0..13%, Mn:1.4%, Ti:0.64%, W:0.05%, Cr:0.03%, Zr:0.083%, La: 0.07%, Sm:0.06%, Nd:0.056%, Y 0.063%, Pr:0.03%, Gd:0.02%, surplus is Al and can not keep away Exempt from impurity.
The present invention provides a kind of mould high-strength aluminium-magnesium alloy material preparation method, specifically includes following steps:
Step 1:Melting twice:Smelting temperature be 800-850 DEG C, time 3-5h, use it is air-cooled with 10-15 DEG C/be cooled to 200-260 DEG C, secondary smelting is carried out, its temperature is 780-820 DEG C, time 1-2h;
Step 2:Initial refining:It is put into refining furnace, adds deslagging agent, refining temperature is 700-750 DEG C, time 20- 25min, wherein slag-removing time 20-30min, deslagging agent include by mass percentage:Potassium chloride:20-25%, sodium carbonate:3- 8%, sodium sulphate:4-8%, cryolite:2-3%, sodium fluoride:7-11%, calcirm-fluoride:4-7%, potassium sulfate:2-6%, fluorine silicon Sour potassium:6-7%, surplus are sodium chloride;
Step 3:Double refining:Nitrogen and argon gas are passed through, refining temperature is 680-720 DEG C, time 10-15min, when skimming Between be 15-20min;
Step 4:Cast molding:Cast temperature is 900-950 DEG C, and time 20-30s, obtains almag die blank;
Step 5:Quenching:Almag mould is placed into temperature in glowing furnace and rises to 680-750 DEG C, 1-2h is kept the temperature, is then immersed in In quenching oil, it is 90-100 DEG C to keep quenching oil temperature, and time 45-55min, is subsequently cooled to room temperature, and cleaning, drying;
Step 6:Mould is placed at 480-520 DEG C and carries out solution treatment, time 2-4h, then using vaporific quenching Almag mould is cooled to 220-260 DEG C by liquid with the cooldown rate of 10-15 DEG C/s;
Step 7:Ageing treatment:Temperature is 160-180 DEG C, time 3-6h.
The beneficial effects of the invention are as follows:The mould that the present invention is prepared using above-mentioned material, has high intensity and hardness, wherein Addition rare earth metal, the defects of can filling up aluminum alloy surface, hinder crystal grain to grow up, have the function that crystallization particulate, make branch Crystal mesh network is relatively sharp, so that improve the thermoplasticity of aluminium alloy, while rare earth metal has good modification effect to aluminium alloy, The eutectic that can obtain fine uniform by the aluminium alloy of Metamorphism treatment adds nascent αsolidsolution tissue, so as to significantly increase aluminium The intensity and plasticity of alloy, and the metamorphism of rare earth metal has the characteristics that long-acting and remelting is stablized;The introducing of rare earth metal, Corrosion resistance and high temperature oxidation resistance tool to aluminum alloy materials improve, while also improve intensity and toughness;
In initial refining, deslagging agent is added, its heat generation is good, the aluminum that can be sufficiently separated in slag, and decomposes alumina composition, Aluminium consumption is reduced, makes aluminium slag into dryness and loose, easily removing;Molten aluminum purity can be also greatly improved at the same time, improves its metallicity Energy;
The mould that the present invention is prepared with aluminum-magnesium alloy material, its tensile strength are prevented up to more than 400Mpa, and with good Corrosive nature, compared with the existing, its service life can improve 1-2 times.
Embodiment
Embodiment 1
The present embodiment provides a kind of mould high-strength aluminium-magnesium alloy material, include the component of following percentage by weight:Cu: 1.1%, Mg:5.3%, Si:0.21%, Zn:0.1%, Fe:0..11%, Mn:1.3%, Ti:0.6%, Cr: 0.026%, W:0.04%, Zr:0.076%, La:0.06%, Sm:0.055%, Nd:0.052%, Y 0.05%, Pr: 0.02%, Gd:0.015%, surplus is Al and inevitable impurity.
The present embodiment provides a kind of mould high-strength aluminium-magnesium alloy material preparation method, following steps are specifically included:
Step 1:Melting twice:Smelting temperature is 830 DEG C, time 4h, use it is air-cooled with 10 DEG C/be cooled to 240 DEG C, carry out Secondary smelting, its temperature are 800 DEG C, time 1.5h;
Step 2:Initial refining:It is put into refining furnace, adds deslagging agent, refining temperature is 720 DEG C, and time 25min, skims Time is 30min, and wherein deslagging agent includes by mass percentage:Potassium chloride:22%, sodium carbonate:5%, sodium sulphate:4%, fluorine aluminium Sour sodium:2%, sodium fluoride:9%, calcirm-fluoride:5%, potassium sulfate:4%, potassium fluosilicate:6%, surplus is sodium chloride;
Step 3:Double refining:Nitrogen and argon gas are passed through, refining temperature is 695 DEG C, time 13min, and slag-removing time is 15min;
Step 4:Cast molding:Cast temperature is 930 DEG C, and time 25s, obtains almag mould;
Step 5:Quenching:Almag mould is placed into temperature in glowing furnace and rises to 710 DEG C, 1.5h is kept the temperature, is then immersed in quenching In oil, it is 95 DEG C to keep quenching oil temperature, and time 50min, is subsequently cooled to room temperature, and cleaning, drying;
Step 6:Mould is placed at 495 DEG C and carries out solution treatment, time 3h, then uses vaporific quenching liquid with 13 DEG C/almag mould is cooled to 240 DEG C by the cooldown rate of s;
Step 7:Ageing treatment:Temperature is 175 DEG C, time 5h.
Embodiment 2
The present embodiment provides a kind of mould high-strength aluminium-magnesium alloy material, include the component of following percentage by weight:Cu: 1.2%, Mg:5.4%, Si:0.23%, Zn:0.13%, Fe:0.13%, Mn:1.4%, Ti:0.64%, W:0.05%, Cr: 0.03%, Zr:0.083%, La:0.07%, Sm:0.06%, Nd:0.056%, Y 0.063%, Pr:0.03%, Gd: 0.02%, surplus is Al and inevitable impurity.
The present embodiment provides a kind of mould high-strength aluminium-magnesium alloy material preparation method, following steps are specifically included:
Step 1:Melting twice:Smelting temperature be 845 DEG C, time 3.5h, use it is air-cooled with 15 DEG C/be cooled to 220 DEG C, into Row secondary smelting, its temperature are 810 DEG C, time 1h;
Step 2:Initial refining:It is put into refining furnace, adds deslagging agent, refining temperature is 740 DEG C, and time 20min, skims Time is 27min, and wherein deslagging agent includes by mass percentage:Potassium chloride:24%, sodium carbonate:7%, sodium sulphate:6%, fluorine aluminium Sour sodium:3%, sodium fluoride:10%, calcirm-fluoride:7%, potassium sulfate:5%, potassium fluosilicate:7%, surplus is sodium chloride;
Step 3:Double refining:Nitrogen and argon gas are passed through, refining temperature is 710 DEG C, time 12min, and slag-removing time is 18min;
Step 4:Cast molding:Cast temperature is 940 DEG C, and time 23s, obtains almag mould;
Step 5:Quenching:Almag mould is placed into temperature in glowing furnace and rises to 730 DEG C, 1h is kept the temperature, is then immersed in quenching oil In, it is 98 DEG C to keep quenching oil temperature, and time 45-55min, is subsequently cooled to room temperature, and cleaning, drying;
Step 6:Mould is placed at 510 DEG C and carries out solution treatment, time 2h, then uses vaporific quenching liquid with 15 DEG C/almag mould is cooled to 230 DEG C by the cooldown rate of s;
Step 7:Ageing treatment:Temperature is 180 DEG C, time 3.5h.
In addition to the implementation, the present invention can also have other embodiment.It is all to use equivalent substitution or equivalent transformation shape Into technical solution, all fall within the protection domains of application claims.

Claims (4)

1. a kind of mould high-strength aluminium-magnesium alloy material, it is characterised in that include the component of following percentage by weight: Cu: 1.1-1.2%, Mg:5.3-5.6%, Si:0.2-0.25%, Zn:0.1-0.15%, Fe:0..1-0.2%, Mn:1.2- 1.6%, Ti:0.6-0.7%, W:0.03-0.06%, Cr:0.02-0.04%, Zr:0.07-0.12%, La:0.06-0.08%, Sm:0.05-0.07%, Nd:0.05-0.06%, Y 0.05-0.07%, Pr:0.02-0.04%, Gd:0.01-0.03%, Surplus is Al and inevitable impurity.
2. according to the mould high-strength aluminium-magnesium alloy material described in claim 1, it is characterised in that:Including following weight hundred Divide the component of ratio: Cu:1.1%, Mg:5.3%, Si:0.21%, Zn:0.1%, Fe:0..11%, Mn:1.3%, Ti: 0.6%, Cr:0.026%, W:0.04%, Zr:0.076%, La:0.06%, Sm:0.055%, Nd:0.052%, Y 0.05%, Pr:0.02%, Gd:0.015%, surplus is Al and inevitable impurity.
3. according to the mould high-strength aluminium-magnesium alloy material described in claim 1, it is characterised in that:Including following weight hundred Divide the component of ratio:Cu:1.2%, Mg:5.4%, Si:0.23%, Zn:0.13%, Fe:0..13%, Mn:1.4%, Ti: 0.64%, W:0.05%, Cr:0.03%, Zr:0.083%, La:0.07%, Sm:0.06%, Nd:0.056%, Y 0.063%, Pr:0.03%, Gd:0.02%, surplus is Al and inevitable impurity.
4. according to any mould high-strength aluminium-magnesium alloy material preparation method in claim 1-3, it is characterised in that: Specifically include following steps:
Step 1:Melting twice:Smelting temperature be 800-850 DEG C, time 3-5h, use it is air-cooled with 10-15 DEG C/be cooled to 200-260 DEG C, secondary smelting is carried out, its temperature is 780-820 DEG C, time 1-2h;
Step 2:Initial refining:It is put into refining furnace, adds deslagging agent, refining temperature is 700-750 DEG C, time 20- 25min, wherein slag-removing time 20-30min, deslagging agent include by mass percentage:Potassium chloride:20-25%, sodium carbonate:3- 8%, sodium sulphate:4-8%, cryolite:2-3%, sodium fluoride:7-11%, calcirm-fluoride:4-7%, potassium sulfate:2-6%, fluorine silicon Sour potassium:6-7%, surplus are sodium chloride;
Step 3:Double refining:Nitrogen and argon gas are passed through, refining temperature is 680-720 DEG C, time 10-15min, when skimming Between be 15-20min;
Step 4:Cast molding:Cast temperature is 900-950 DEG C, and time 20-30s, obtains almag die blank;
Step 5:Quenching:Almag die blank is placed into temperature in glowing furnace and rises to 680-750 DEG C, keeps the temperature 1-2h, then Immerse in quenching oil, it is 90-100 DEG C to keep quenching oil temperature, and time 45-55min, is subsequently cooled to room temperature, and cleaning, drying;
Step 6:Die blank is placed at 480-520 DEG C and carries out solution treatment, time 2-4h, then using vaporific Almag mould is cooled to 220-260 DEG C by quenching liquid with the cooldown rate of 10-15 DEG C/s;
Step 7:Ageing treatment:Temperature is 160-180 DEG C, time 3-6h.
CN201711332592.7A 2017-12-13 2017-12-13 A kind of mould high-strength aluminium-magnesium alloy material Pending CN107955894A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108913963A (en) * 2018-06-22 2018-11-30 镇江市益宝电气科技有限公司 A kind of high-strength corrosion-resisting bus duct

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108913963A (en) * 2018-06-22 2018-11-30 镇江市益宝电气科技有限公司 A kind of high-strength corrosion-resisting bus duct

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