CN103131916B - High-strength aluminum alloy processed by sodium fluoroaluminate and preparing method of sodium fluoroaluminate - Google Patents
High-strength aluminum alloy processed by sodium fluoroaluminate and preparing method of sodium fluoroaluminate Download PDFInfo
- Publication number
- CN103131916B CN103131916B CN201110385859.5A CN201110385859A CN103131916B CN 103131916 B CN103131916 B CN 103131916B CN 201110385859 A CN201110385859 A CN 201110385859A CN 103131916 B CN103131916 B CN 103131916B
- Authority
- CN
- China
- Prior art keywords
- aluminium
- acid sodium
- fluoric acid
- melt
- alloy
- 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.)
- Expired - Fee Related
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses high-strength aluminum alloy processed by sodium fluoroaluminate and a preparing method of the high-strength aluminum alloy. The high-strength aluminum alloy comprises, by weight, 2.0-3.2% of Cu, not more than 0.2% of Mn, 0.2-0.5% of Mg, not more than 0.01% of Cr, not more than 0.01% of Ni, not more than 0.1% of Zn, not more than 0.15% of Ti, not more than 0.5% of Si, not more than 0.5% of Fe, the sodium fluoroaluminate accounts for 0.05-2.5% of the total mass of furnace materials, and the rest is Al and unavoidable trace impurities. The formula and the preparing method of the high-strength aluminum alloy improve the obdurability, forming property and hardenability of the high-strength aluminum alloy.
Description
Technical field
The present invention relates to a kind of aluminum alloy materials and preparation method thereof, aldural of particularly a kind of aluminium fluoric acid sodium process and preparation method thereof.
Background technology
The aluminium alloy of deep processing often needs first to be cast as large-scale ingot blank, as slab ingot, pole etc., again by means such as rolling, extruding, forgings, be processed into various finished product, these processes all will combine with heat treatment phase substantially, if to the finished product that can directly use, then also will through operations such as over-segmentation, surface working, Passivation Treatment.These processing means, need aluminum alloy materials itself to possess good deep shaping property, comprise castability, press working deformation performance, heat treatment reinforcement performance, corrosion resistance, antifatigue destructive characteristics, surface working and coating property etc.Wherein, founding performance is the basis of aluminium alloy deep shaping property.Large-scale ingot blank, especially the pole of the slab ingot of more than thickness 500mm, slab and more than diameter 500mm, can be the representative base material of Large Efficient deep processing, and be prefabricated into large-scale ingot blank, be also the first technology critical point whether test aluminum alloy materials itself is applicable to carrying out deep processing.
According to statistics, in the world in 500 various deformation aluminum alloy materials, the aluminium alloy being usually used in the large-scale ingot blank of founding is less than 20, wherein be most commonly used to the large-scale ingot blank of founding and produce the aluminium alloy of slab have 5083,5026,6082,2017,2024,2219,7075,7050 etc., in these materials, what belong to duralumin and ultralumin category is 2XXX system and 7XXX system, and its slab is used for aerospace industry, but the poor performance of the large-scale ingot blank of its founding, slab ingot and pole shaping rate very low; 5XXX system, 6XXX system alloy casting better performances, but intensity is low; Other then belongs to soft aluminium category as 1XXX system, 3XXX line aluminium alloy.
Except forming property during current aluminum alloy materials ingot blank large-scale except founding is poor, large-scale ingot blank is not high in the hardening capacity of heat treatment process, tempering resistance is poor and can not meet higher mechanical property requirements or some property (as heat-resisting, anti-corrosion) etc., is significant deficiency yet.These defects make it substitute in field of engineering technology in the process of the heavy strong materials and structures such as steel work and define the technology breakpoint being difficult to cross over.
Summary of the invention
Technical problem to be solved by this invention is, the problems such as the hardening capacity that the formability problems existed at fusion-casting process for aluminum current alloy and heat treatment process exist is not high, aluminium fluoric acid sodium is added in Combined Processing mode, reach the deficiency overcoming aluminium alloy capability, improve its obdurability, plasticity and hardening capacity, for efficient deep processing provides high-end base material.
Technical scheme of the present invention: the aldural of a kind of aluminium fluoric acid sodium process, by weight percentage, this alloying constituent is Cu:2.0 ~ 3.2%, Mn :≤0.2%, Mg:0.2 ~ 0.5%, Cr :≤0.01%, Ni :≤0.01%, Zn :≤0.1%, Ti :≤0.15%, Si :≤0.5%, Fe :≤0.5%, aluminium fluoric acid sodium is 0.05 ~ 2.5% of furnace charge total mass, and all the other are Al and inevitable trace impurity.
The aldural of described a kind of aluminium fluoric acid sodium process, the physical aspect of above-mentioned aluminium fluoric acid sodium is pulverulent solids, and state of aggregation granularity is 10-40 order.
The preparation method of the aldural of described a kind of aluminium fluoric acid sodium process, comprises the steps:
Step one: within the scope of above-mentioned element ratio, a selected group element and aluminium fluoric acid sodium, then the alloy total amount prepared as required, extrapolate the quality of often kind of required elemental metals, establishment alloy production allocation sheet, and get the raw materials ready by allocation sheet choosing foot;
Step 2: first add aluminium ingot or molten aluminum liquid in smelting furnace, heating makes it to melt completely, first adds the selected alloying element of step one, makes it to dissolve completely and melt, be incubated after refining at 700 ~ 1000 DEG C by formula rate; Melting process completes in enclosed environment;
Step 3: the mixed gas using nitrogen or rare gas element or nitrogen and rare gas element, adds a small amount of chlorine, carry out degassing and purifying operation to melt, make aluminium fluoric acid sodium powder join in alloy melt with fluidized regime with gas simultaneously; Stir simultaneously, aluminium fluoric acid sodium is evenly distributed in alloy melt, and fully reacts with alloy melt; Alterant adds complete, continues to pass into protective gas to reacting complete; Standing, temperature adjustment to 680 ~ 730 DEG C, aluminium alloy is come out of the stove, and enters subsequent processing.
compared with prior art, the present invention has following major advantage:
The Na that aluminium fluoric acid sodium at high temperature decomposites can make the crystallization of Eutectic Silicon in Al-Si Cast Alloys become fine-grannular from short round needle shape; and reduce eutectic temperature; increase condensate depression; crystal grain thinning; powder formed carbon nitride is adding in aluminium alloy melt process with protective gas with fluidization form, has the specific surface area more much bigger than general cake mass, can realize disperseing fast and fully contacting with melt; significantly shorten dispersion and uniform time, improve its obdurability, plasticity and hardening capacity.
Specific embodiment
embodiment 1:
The aldural of a kind of aluminium fluoric acid sodium of the present invention process, the amount of the metal of concrete formula is: Cu:20kg, Mn:0.1kg, Mg:2kg, Zn:0.1kg, Ti:0.15kg, aluminium fluoric acid sodium (40 order): 25kg, Al:952.65kg; Wherein Si and Fe is the impurity brought in raw material A l, and controls content: Si :≤0.5%, Fe :≤0.5%;
Step 2: first add aluminium ingot or molten aluminum liquid in smelting furnace, heating makes it to melt completely, first adds the selected alloying element of step one, makes it to dissolve completely and melt, be incubated after refining at 700 ~ 1000 DEG C by formula rate; Melting process completes in enclosed environment;
Step 3: the mixed gas using nitrogen or rare gas element or nitrogen and rare gas element, adds a small amount of chlorine, carry out degassing and purifying operation to melt, make aluminium fluoric acid sodium powder join in alloy melt with fluidized regime with gas simultaneously; Stir simultaneously, aluminium fluoric acid sodium is evenly distributed in alloy melt, and fully reacts with alloy melt; Alterant adds complete, continues to pass into protective gas to reacting complete; Standing, temperature adjustment to 680 ~ 730 DEG C, aluminium alloy is come out of the stove, and enters subsequent processing.
embodiment 2:
The aldural of a kind of aluminium fluoric acid sodium of the present invention process, the amount of the metal of concrete formula is: Cu:32kg, Mn:2kg, Mg:5kg, Cr:0.1kg, Ni:0.1kg, Zn:1kg, Ti:1.5kg, aluminium fluoric acid sodium (10 order): 0.5kg, Al:957.8kg; Wherein Si and Fe is the impurity brought in raw material A l, and control content exists: Si :≤0.5%, Fe :≤0.5%;
Step 2: first add aluminium ingot or molten aluminum liquid in smelting furnace, heating makes it to melt completely, first adds the selected alloying element of step one, makes it to dissolve completely and melt, be incubated after refining at 700 ~ 1000 DEG C by formula rate; Melting process completes in enclosed environment;
Step 3: the mixed gas using nitrogen or rare gas element or nitrogen and rare gas element, adds a small amount of chlorine, carry out degassing and purifying operation to melt, make aluminium fluoric acid sodium powder join in alloy melt with fluidized regime with gas simultaneously; Stir simultaneously, aluminium fluoric acid sodium is evenly distributed in alloy melt, and fully reacts with alloy melt; Alterant adds complete, continues to pass into protective gas to reacting complete; Standing, temperature adjustment to 680 ~ 730 DEG C, aluminium alloy is come out of the stove, and enters subsequent processing.
Claims (2)
1. an aldural for aluminium fluoric acid sodium process, is characterized in that: by weight percentage, and this alloying constituent is Cu:2.0 ~ 3.2%, Mn :≤0.2%, Mg:0.2 ~ 0.5%, Cr :≤0.01%, Ni :≤0.01%, Zn :≤0.1%, Ti :≤0.15%, Si :≤0.5%, Fe :≤0.5%, aluminium fluoric acid sodium is 0.05 ~ 2.5% of furnace charge total mass, and all the other are Al and inevitable trace impurity;
Its preparation method: comprise the steps:
Step one: within the scope of above-mentioned element ratio, a selected group element and aluminium fluoric acid sodium, then the alloy total amount prepared as required, extrapolate the quality of often kind of required elemental metals, establishment alloy production allocation sheet, and get the raw materials ready by allocation sheet choosing foot;
Step 2: first add aluminium ingot or molten aluminum liquid in smelting furnace, heating makes it to melt completely, first adds the selected alloying element of step one, makes it to dissolve completely and melt, be incubated after refining at 700 ~ 1000 DEG C by formula rate; Melting process completes in enclosed environment;
Step 3: use in nitrogen and add a small amount of chlorine, degassing and purifying operation is carried out to melt, makes aluminium fluoric acid sodium powder join in alloy melt with fluidized regime with gas simultaneously; Stir simultaneously, aluminium fluoric acid sodium is evenly distributed in alloy melt, and fully reacts with alloy melt; Alterant adds complete, continues to pass into protective gas to reacting complete; Standing, temperature adjustment to 680 ~ 730 DEG C, aluminium alloy is come out of the stove, and enters subsequent processing.
2. the aldural of a kind of aluminium fluoric acid sodium according to claim 1 process, is characterized in that: the physical aspect of above-mentioned aluminium fluoric acid sodium is pulverulent solids, and state of aggregation granularity is 10-40 order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385859.5A CN103131916B (en) | 2011-11-29 | 2011-11-29 | High-strength aluminum alloy processed by sodium fluoroaluminate and preparing method of sodium fluoroaluminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385859.5A CN103131916B (en) | 2011-11-29 | 2011-11-29 | High-strength aluminum alloy processed by sodium fluoroaluminate and preparing method of sodium fluoroaluminate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103131916A CN103131916A (en) | 2013-06-05 |
| CN103131916B true CN103131916B (en) | 2015-07-01 |
Family
ID=48492362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110385859.5A Expired - Fee Related CN103131916B (en) | 2011-11-29 | 2011-11-29 | High-strength aluminum alloy processed by sodium fluoroaluminate and preparing method of sodium fluoroaluminate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103131916B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101410540A (en) * | 2005-09-07 | 2009-04-15 | 美铝公司 | 2000 series alloys with enhanced damage tolerance performance for aerospace applications |
| CN101768681A (en) * | 2009-05-13 | 2010-07-07 | 陈月丹 | Composite modifying and refining agent for casting aluminium and silicon alloy |
-
2011
- 2011-11-29 CN CN201110385859.5A patent/CN103131916B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101410540A (en) * | 2005-09-07 | 2009-04-15 | 美铝公司 | 2000 series alloys with enhanced damage tolerance performance for aerospace applications |
| CN101768681A (en) * | 2009-05-13 | 2010-07-07 | 陈月丹 | Composite modifying and refining agent for casting aluminium and silicon alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103131916A (en) | 2013-06-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103205614B (en) | A kind of production technique of 6063 aluminum alloy materials | |
| CN102443725B (en) | High-strength aluminum alloy treated by AlH3 and preparation method of high-strength aluminum alloy | |
| CN102337435B (en) | Aluminum alloy pipe and manufacture method thereof | |
| CN102330004B (en) | Manufacturing method for aluminum alloy die forgings | |
| CN101538667B (en) | High-strength and wear-resistant cocrystallized Al-Si alloy forging stock material and preparation method thereof | |
| CN103131921B (en) | Aldural of a kind of carbonization nickel process and preparation method thereof | |
| CN103131919B (en) | High-strength aluminum alloy material formed through metamorphism of salt hexafluorosilicate | |
| CN110592435A (en) | Lightweight aluminum alloy profile | |
| CN112481527A (en) | 6XXX series aluminum alloy round ingot and preparation method thereof | |
| CN102433475A (en) | High-strength and high-hardness aluminum alloy and preparation method thereof | |
| CN114231802A (en) | Rare earth aluminum alloy bar for forging aluminum alloy hub and preparation method thereof | |
| CN105401005A (en) | Al-Si alloy material and production method thereof | |
| CN113862533B (en) | Aluminum alloy and preparation method thereof | |
| CN101386940B (en) | Al-Mn-Mg-Cu-Ni-Ce alloy and manufacturing method thereof | |
| CN112981212B (en) | Preparation method of non-equiatomic ratio high-entropy alloy semi-solid thixotropic blank | |
| CN102418009B (en) | Aluminum alloy capable of digesting high-hardness compounds and smelting method of aluminum alloy | |
| CN102418007A (en) | High-temperature aluminum alloy treated by using WB and LiH powder and preparation method of aluminum alloy | |
| CN101597708A (en) | A kind of Al-Mg-Nd-Sc aluminium alloy | |
| CN102839304A (en) | Aluminum alloy tube for camping tent support and preparation method thereof | |
| CN103131916B (en) | High-strength aluminum alloy processed by sodium fluoroaluminate and preparing method of sodium fluoroaluminate | |
| CN108559890B (en) | Ni-Be-containing high-strength heat-resistant aluminum alloy and preparation method thereof | |
| CN109280786B (en) | Aluminum-tungsten intermediate alloy and production method thereof | |
| CN102418008A (en) | High-strength aluminum alloy obtained by removing inclusion through HfC and preparation method of aluminum alloy | |
| CN102418011B (en) | High-strength aluminum alloy added with AlCrN and RbH and preparation method of aluminum alloy | |
| CN109338175A (en) | A kind of green low-cost aluminum alloy and its preparation process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20151129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |