CN102912198A - Method for processing an aluminum alloy to inhibit large grains from forming - Google Patents
Method for processing an aluminum alloy to inhibit large grains from forming Download PDFInfo
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- CN102912198A CN102912198A CN2012104572299A CN201210457229A CN102912198A CN 102912198 A CN102912198 A CN 102912198A CN 2012104572299 A CN2012104572299 A CN 2012104572299A CN 201210457229 A CN201210457229 A CN 201210457229A CN 102912198 A CN102912198 A CN 102912198A
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Abstract
The invention relates to a method for processing an aluminum alloy to inhibit large grains from forming. The aluminum alloy comprises, by mass, 0.72% of magnesium, 1.2% of silicon, 0,25% of manganese, 0.05% of chromium, 0.35% of copper, 0.21% of iron, 0.005% of titanium, and the balance aluminum and inevitable impurities. The components are melted and casted into alloy ingots, and the alloy ingots are subjected to die-casting and quenching to obtain prescribed aluminum alloy profiles. According to the method for processing the aluminum alloy inhibit large grains from forming, the growth of crystallized particle sizes can be inhabited, and the growth of particle sizes is inhabited through a specific processing technology.
Description
Technical field
The invention belongs to metal material field, refer to especially a kind of large grain formation aluminum alloy materials working method that suppresses.
Background technology
Present stage, aluminium alloy extrusions is lightweight with it, high ductibility, even has simultaneously high-intensity performance, is widely used.But in the application of this class section bar, particularly in casting or extrusion processing process, a series of reasons such as the aluminium alloy interior tissue can be because stress changes greatly, and temperature rise is large can cause generation crystal grain recrystallize phenomenon in the quenching process after moulding.Excessive grain growth in the organizer forms coarse grain.This class crystal grain all has a great impact the processing in mechanical property, anti-fatigue performance, corrosion resistance and the later stage of aluminum alloy materials.
Therefore, at the section bar manufacture field, how to suppress large crystal grain in aluminum alloy organization's body or the grain growing in the quenching process, be one of problem of facing of those skilled in the art always.
Summary of the invention
The purpose of this invention is to provide a kind of aluminum alloy materials, the composition by material comes the grain growing in the establishment aluminum alloy organization body, improves the performance of product.
A kind of greatly grain formation aluminium alloy working method that suppresses is prepared respectively to form material, and its composition includes 0.72% magnesium by mass percentage, 1.2% silicon, 0.25% manganese, 0.05% chromium, 0.35% copper, 0.21% iron, 0.005% titanium, surplus is aluminium and inevitable impurity;
To be cast into aluminum alloy ingot after the above-mentioned composition melting, aluminum alloy ingot is carried out the aluminium alloy extrusions that die casting is quenched and obtained stipulating.
Described die casting quenching technology is, carries out constant temperature die casting after aluminum alloy ingot is heated to 500-530 ℃, and wherein die casting speed is 2-2.5 m/min; Quenching is divided into two stages, and first stage is the thermostat(t)ed water cold quenching, and cooling rate can not be lower than 1.5 ℃/second, transfers to natural air cooled to normal temperature when treating drop in temperature to 260-300 ℃.
The beneficial effect that the present invention compares with prior art is:
Because the titanium elements that adds in this application can suppress the particle diameter growth of crystallization, and by complete processing, realized that the phenomenon that suppresses grain growing occurs.
Embodiment
Below by specific embodiment technical scheme of the present invention is described, following examples are just in order to illustrate the present invention rather than to limit scope of the present invention.
Prepare raw material by following composition, its composition includes by mass percentage, 0.72% magnesium, and 1.2% silicon, 0.25% manganese, 0.05% chromium, 0.35% copper, 0.21% iron, 0.005% titanium, surplus is aluminium and inevitable impurity.Above-mentioned composition is carried out melting, and the mode of melting is prior art;
To be cast into aluminum alloy ingot after the above-mentioned composition melting, aluminum alloy ingot is carried out the aluminium alloy extrusions that die casting is quenched and obtained stipulating.
Described die casting quenching technology is, carries out constant temperature die casting after aluminum alloy ingot is heated to 500-530 ℃, and wherein die casting speed is 2-2.5 m/min; In use, the die casting speed that the speed of die casting is greater than or less than the application also can realize the application's purpose, quenching is divided into two stages, first stage is the thermostat(t)ed water cold quenching, coolant temperature remains on 200 ± 10 ℃, cooling rate can not be lower than 1.5 ℃/second, transfers to natural air cooled to normal temperature when treating drop in temperature to 260-300 ℃.
Above embodiment has illustrated technical scheme of the present invention, it will be appreciated by those skilled in the art that to be out of shape or to be equal to replacement by above-mentioned technical scheme, all can access other embodiments of the invention.
Claims (2)
1. one kind is suppressed large grain formation aluminium alloy working method, it is characterized in that: prepare each composition material, its composition includes by mass percentage, 0.72% magnesium, 1.2% silicon, 0.25% manganese, 0.05% chromium, 0.35% copper, 0.21% iron, 0.005% titanium, surplus are aluminium and inevitable impurity;
To be cast into aluminum alloy ingot after the above-mentioned composition melting, aluminum alloy ingot is carried out the aluminium alloy extrusions that die casting is quenched and obtained stipulating.
2. the large grain formation aluminium alloy working method of inhibition according to claim 1 is characterized in that: described die casting quenching technology is, carries out constant temperature die casting after aluminum alloy ingot is heated to 500-530 ℃, and wherein die casting speed is 2-2.5 m/min; Quenching is divided into two stages, and first stage is the thermostat(t)ed water cold quenching, and cooling rate can not be lower than 1.5 ℃/second, transfers to natural air cooled to normal temperature when treating drop in temperature to 260-300 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210457229.9A CN102912198B (en) | 2012-11-09 | 2012-11-09 | Method for processing an aluminum alloy to inhibit large grains from forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210457229.9A CN102912198B (en) | 2012-11-09 | 2012-11-09 | Method for processing an aluminum alloy to inhibit large grains from forming |
Publications (2)
| Publication Number | Publication Date |
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| CN102912198A true CN102912198A (en) | 2013-02-06 |
| CN102912198B CN102912198B (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210457229.9A Expired - Fee Related CN102912198B (en) | 2012-11-09 | 2012-11-09 | Method for processing an aluminum alloy to inhibit large grains from forming |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756288A (en) * | 2016-11-23 | 2017-05-31 | 薛亚红 | It is a kind of to suppress the aluminium alloy processing method that big crystal grain is formed |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101356294A (en) * | 2006-03-30 | 2009-01-28 | 丰田自动车株式会社 | 6000 aluminum extrudate excelling material of good paint-baking hardenability and process for producing the same |
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2012
- 2012-11-09 CN CN201210457229.9A patent/CN102912198B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101356294A (en) * | 2006-03-30 | 2009-01-28 | 丰田自动车株式会社 | 6000 aluminum extrudate excelling material of good paint-baking hardenability and process for producing the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756288A (en) * | 2016-11-23 | 2017-05-31 | 薛亚红 | It is a kind of to suppress the aluminium alloy processing method that big crystal grain is formed |
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| Publication number | Publication date |
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| CN102912198B (en) | 2015-01-07 |
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