CN104962792A - Anticorrosion hard aluminum alloy sectional material and preparation process thereof - Google Patents
Anticorrosion hard aluminum alloy sectional material and preparation process thereof Download PDFInfo
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- CN104962792A CN104962792A CN201510401728.XA CN201510401728A CN104962792A CN 104962792 A CN104962792 A CN 104962792A CN 201510401728 A CN201510401728 A CN 201510401728A CN 104962792 A CN104962792 A CN 104962792A
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Abstract
The invention relates to an anticorrosion hard aluminum alloy sectional material and a preparation process thereof. The anticorrosion hard aluminum alloy section material consists of the following elements by weight percent: 88.5 percent of Al, 0.7 percent of Si, 1.4 percent of Fe, 0.95 percent of Mn, 0.9 percent of Mg, 2.4 percent of Zn, 4.6 percent of Cu, 0.35 percent of Ni and 0.2 percent of Ti. The preparation process comprises the following steps: step S1: melting an aluminum material, and charging Si, Fe, Mn, Mg, Zn, Cu, Ni and Ti according to the ratio; step S2: controlling high-temperature casting, and forming aluminum-base solid solution; step S3: carrying out anode oxidation, purification and turning treatment, and refining crystal grains; step S4: splicing molding by adopting a mold. The anticorrosion hard aluminum alloy sectional material has good anticorrosion characteristics and excellent mechanical strength and is better than an ordinary universal sectional material for laboratory.
Description
Technical field
The present invention relates to technical field of aluminum alloy technology, particularly the corrosion-resistant hard aluminium alloy section bar of one and preparation technology thereof.
Background technology
Material selected by the furniture industry of current laboratory mostly is steel material, just coat very thin one deck molding powder on its surface, in order to resist the special corrosive environment in laboratory, but there are two defects: 1, steel material itself is not anticorrosion, especially generate Indian red after contacting with oxygen, the corrosion speed of Fe can be accelerated; 2, steel pipe inner side-wall cannot coating, and in laboratory environment, acid, water vapour will enter inner side-wall by various processing mouth and produce chemical reaction, and especially in use, as long as there is shadow scratch on surface, Fe will be exposed in corrosive atmosphere.Causing the laboratory furniture lost of life, is generally that namely 1-3 becomes and have rusty stains, and annual the input on lab construction of country reaches about 3,000,000,000, causes huge waste, even leave very serious potential safety hazard by directly to state investment.
Summary of the invention
In order to overcome the defect that above-mentioned prior art exists, the invention provides a kind of aluminium alloy extrusions and preparation technology thereof, its hardness is close to the hardness of steel, and anti-rotten oxidation-resistance ability is considerably beyond steel, is better than the general section bar of common lab.
The invention provides a kind of corrosion-resistant hard aluminium alloy section bar, the component of described corrosion-resistant hard aluminium alloy section bar is: AL, Si, Fe, Mn, Mg, Zn, Cu, Ni and Ti, its component proportion is: AL 88.5%, Si 0.7%, Fe 1.4%, Mn 0.95%, Mg 0.9%, Zn 2.4%, Cu 4.6%, Ni 0.35%, Ti 0.2%.
In a kind of preferred embodiments of corrosion-resistant hard aluminium alloy section bar provided by the invention, the hardness value HRB of described corrosion-resistant hard aluminium alloy section bar is more than 50.5.
In a kind of preferred embodiments of corrosion-resistant hard aluminium alloy section bar provided by the invention, described corrosion-resistant hard aluminium alloy section bar mean compressive strength is more than 235MPa.
Present invention also offers the preparation technology of described corrosion-resistant hard aluminium alloy section bar, comprise the steps:
Step S1: aluminium material is provided and is melted, and add powder Si in proportion, Fe, Mn, Mg, Zn, Cu, Ni, Ti;
Step S2: control high temperature founding, form aluminium base Solid solution;
Step S3: carry out anodic oxidation treatment, purifying treatment and Metamorphism treatment, make grain refining;
Step S4: adopt mould grafting shaping.
In a kind of preferred embodiments of the preparation technology of described corrosion-resistant hard aluminium alloy section bar provided by the invention, in described step S3, grain refining to particle diameter is reduced to 1/20th of particle diameter before refinement, and total amount reduces 30%.
In a kind of preferred embodiments of the preparation technology of described corrosion-resistant hard aluminium alloy section bar provided by the invention, before described step S3 carries out, first carry out ageing strengthening, namely under normal temperature or the condition of heating, make to separate out with the form of intermetallic compound in the described aluminium base Solid solution of step S2 gained, form the hard particle of Dispersed precipitate.
The beneficial effect of corrosion-resistant hard aluminium alloy section bar provided by the invention is:
By described corrosion-resistant hard aluminium alloy profile applications in laboratory, be better than the steel material that common lab is used, because its hardness is close to steel, anticorrosive oxidation susceptibility, considerably beyond steel, effectively prevent the corrosion risk brought to material owing to doing experiment mishandle.
The invention has the beneficial effects as follows, this aluminium alloy extrusions has good corrosion resistance characteristic and excellent physical strength, it is the hard aluminium alloy that a kind of ultimate compression strength is high, over-all properties is better than conventional aluminium magnesium alloy greatly, is applicable to institution of higher education, laboratory, scientific research institution, hospital, chemical industry, oil inspection inspection labour and enterprise's quality inspection, research and development etc.
Even if spray treatment is not made in surface, can reach peer-level too, be a kind of desirable material replacing traditional material.
Simultaneously, the working method of this sample section bar adopts mould to patch molding mode, uniform specification, has fundamentally broken away from the poor efficiency of manual processing, non-type situation, be conducive to the standardization of products, China will be made to realize industrial standardization in the sector and greatly enhance competitiveness once promote.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is corrosion-resistant hard aluminium alloy section bar preparation technology schema;
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, Fig. 1 is corrosion-resistant hard aluminium alloy section bar preparation technology schema.
The invention provides a kind of corrosion-resistant hard aluminium alloy section bar, the component of described corrosion-resistant hard aluminium alloy section bar is: Al, Si, Fe, Mn, Mg, Zn, Cu, Ni and Ti, its component proportion is: Al 88.5%, Si 0.7%, Fe 1.4%, Mn 0.95%, Mg 0.9%, Zn 2.4%, Cu4.6%, Ni 0.3 5%, Ti 0.2%.The hardness value HRB of described corrosion-resistant hard aluminium alloy section bar is more than 50.5.Described corrosion-resistant hard aluminium alloy section bar mean compressive strength is more than 235MPa.
Present invention also offers the preparation technology of described corrosion-resistant hard aluminium alloy section bar, comprise the steps:
Step S1: aluminium material is provided and is melted, and add powder Si according to the above ratio, Fe, Mn, Mg, Zn, Cu, Ni, Ti.
Step S2: control high temperature founding, form aluminium base Solid solution.
Step S3: under normal temperature or the condition of heating, make to separate out with the form of intermetallic compound in the described aluminium base Solid solution of step S2 gained, form the hard particle of Dispersed precipitate, then carry out anodic oxidation treatment, purifying treatment and Metamorphism treatment, make grain refining.Described grain refining to particle diameter is reduced to 1/20th of particle diameter before refinement, and total amount reduces 30%, obtains antirust hard aluminium alloy.
Step S4: adopt mould grafting shaping, obtain anticorrosion aluminium ally section.
So-called anodic oxidation, is placed in corresponding electrolytic solution (as sulfuric acid, chromic acid, oxalic acid etc.) by Aluminum-aluminum alloy and, as anode, under specified conditions and impressed current effect, carries out electrolysis.The aluminium of anode or its alloy oxidation, form alumina flake on the surface, and its thickness is 5 ~ 30 microns, and hard anodized film can reach 25 ~ 150 microns.Aluminium after anodic oxidation or its alloy, improve its hardness and wear resistance, 250 ~ 500 kilograms/square millimeter can be reached, good thermotolerance, hard anodized film fusing point up to 2320K, excellent insulativity, breakdown voltage resistant up to 2000V, enhance corrosion resistance, do not corrode through several thousand hours in ω=0.03NaCl salt fog.
Hardness represents that opposing hard object in material local is pressed into the ability on its surface.HRB index is the steel ball adopting 100kg load and diameter 1.58mm to harden, and the hardness of trying to achieve uses and measures with aluminum alloy hardness.
Ultimate compression strength (compressive strength) code name σ bc, refers to breakdown point when external force is pressure.
Corrosion resistance nature: drip 2mL acetic acid with dropper respectively and do hydrochloric acid in aluminum alloy mould surface observation, until surface drying, have no bubbling phenomenon, surface is intact.Conclusion is that this aluminium shape surface coating is acidproof.
The beneficial effect of the anticorrosion aluminium ally section that provides of the present invention and preparation technology thereof is:
One, the chemical composition of this aluminium alloy and proportioning novel, and aluminium alloy extrusions can be made to have good corrosion resistance characteristic and excellent physical strength, because it is generally acknowledged that Mn content is when 0.1-0.5%, aluminium alloy has good erosion resistance, and Mg and Mn is collaborative can also improve alloy strength; In Al, add Zn and Mg simultaneously, form Mg/Zn
2, energy alloy produces the obvious strengthening effect of property; Continue on this basis to add Cu element, form Al-Zn-Mg-Cu alloy, its strengthening effect is maximum in all aluminium alloys, facts have proved that content can improve Al-alloy mechanical properties when being in 4.0-6% and machinability is improved, and reduces hazardous elements S i content simultaneously; Adding of Ni contributes to improving hot strength thermotolerance; Ti contributes to refinement seam organization and cast structure.Therefore this aluminium alloy extrusions is the hard aluminium alloy that a kind of ultimate compression strength is high, and over-all properties is better than conventional aluminium magnesium alloy greatly, is applicable to institution of higher education, laboratory, scientific research institution, hospital, chemical industry, oil inspection inspection labour and enterprise's quality inspection, research and development etc.Even if spray treatment is not made in surface, can reach peer-level too, be a kind of desirable material replacing traditional material.
Two, the working method of this sample section bar adopts mould to patch molding mode, uniform specification, fundamentally break away from the poor efficiency of manual processing, non-type situation, be conducive to the standardization of products, China will have been made to realize industrial standardization in the sector and greatly enhance competitiveness once promote.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included within scope of patent protection of the present invention.
Claims (6)
1. a corrosion-resistant hard aluminium alloy section bar, is characterized in that, the component of described corrosion-resistant hard aluminium alloy section bar is: Al, Si, Fe, Mn, Mg, Zn, Cu, Ni and Ti, its component proportion is: AL88.5%, Si0.7%, Fe1.4%, Mn0.95%, Mg0.9%, Zn2.4%, Cu4.6%, Ni0.35%, Ti0.2%.
2. corrosion-resistant hard aluminium alloy section bar according to claim 1, is characterized in that, the hardness value HRB of described corrosion-resistant hard aluminium alloy section bar is more than 50.5.
3. corrosion-resistant hard aluminium alloy section bar according to claim 1, is characterized in that, described corrosion-resistant hard aluminium alloy section bar mean compressive strength is more than 235MPa.
4. the preparation technology of corrosion-resistant hard aluminium alloy section bar according to claim 1, is characterized in that, comprise the steps:
Step S1: provide aluminium material and melted, then adds powder Si, Fe, Mn, Mg, Zn, Cu, Ni, Ti in proportion;
Step S2: control high temperature founding, form aluminium base Solid solution;
Step S3: carry out anodic oxidation treatment, purifying treatment and Metamorphism treatment, make grain refining;
Step S4: adopt mould grafting shaping.
5. preparation technology according to claim 4, is characterized in that, in described step S3, grain refining after treatment to particle diameter is reduced to 1/20th of particle diameter before refinement, and total amount reduces 30%.
6. preparation technology according to claim 5, is characterized in that, before described step S3 carries out, first carry out ageing strengthening, namely under normal temperature or the condition of heating, make to separate out with the form of intermetallic compound in the described aluminium base Solid solution of step S2 gained, form the hard particle of Dispersed precipitate.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019152738A1 (en) * | 2018-01-31 | 2019-08-08 | Arconic Inc. | Corrosion resistant aluminum electrode alloy |
| CN112567059A (en) * | 2018-08-02 | 2021-03-26 | 特斯拉公司 | Aluminum alloy for die casting |
| US11421304B2 (en) | 2017-10-26 | 2022-08-23 | Tesla, Inc. | Casting aluminum alloys for high-performance applications |
| CN108103548B (en) * | 2018-03-02 | 2023-09-19 | 安徽尚德科技有限公司 | High wear-resisting aluminum alloy intermediate plate |
-
2015
- 2015-07-10 CN CN201510401728.XA patent/CN104962792A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11421304B2 (en) | 2017-10-26 | 2022-08-23 | Tesla, Inc. | Casting aluminum alloys for high-performance applications |
| WO2019152738A1 (en) * | 2018-01-31 | 2019-08-08 | Arconic Inc. | Corrosion resistant aluminum electrode alloy |
| CN108103548B (en) * | 2018-03-02 | 2023-09-19 | 安徽尚德科技有限公司 | High wear-resisting aluminum alloy intermediate plate |
| CN112567059A (en) * | 2018-08-02 | 2021-03-26 | 特斯拉公司 | Aluminum alloy for die casting |
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Application publication date: 20151007 |