CN107937770A - A kind of preparation method of highly corrosion resistant marine aluminium alloy - Google Patents
A kind of preparation method of highly corrosion resistant marine aluminium alloy Download PDFInfo
- Publication number
- CN107937770A CN107937770A CN201711186378.5A CN201711186378A CN107937770A CN 107937770 A CN107937770 A CN 107937770A CN 201711186378 A CN201711186378 A CN 201711186378A CN 107937770 A CN107937770 A CN 107937770A
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- China
- Prior art keywords
- aluminium alloy
- corrosion resistant
- highly corrosion
- preparation
- resistant marine
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
Abstract
The invention discloses a kind of highly corrosion resistant marine aluminium alloy, include the component of following percentage by weight：Si 1.8 2.6%, Fe 0.3 0.5%, Mn 0.4 1.2%, Mg 3.5 4.2%, Sc 0.9 1.5%, Cr 0.4 0.7%, Ni 0.1 0.3%, Ti 0.5 0.8%, Ce 0.09 0.15%, refining agent 1.2 2%, surplus Al.By adding the elements such as Sc, Ce in the alloy, the toughness and intensity of aluminium alloy are significantly improved；In conjunction with follow-up surface treatment procedure, obtained aluminium alloy extrusions has extraordinary corrosion resistance, meets standard peculiar to vessel.
Description
Technical field
The present invention relates to technical field of aluminium alloy preparation, more particularly to a kind of preparation side of highly corrosion resistant marine aluminium alloy
Method.
Background technology
Its intensity of existing aluminium alloy is not very high, is assembled on ship, although there is the advantages of low-density, high intensity,
Expose to the weather and the influence of high humility since the aluminium alloy accessory on ship can be undergone in use, easily aoxidize in atmosphere
And corroded, cause aluminium alloy discoloration, deformation, shorten the service life of aluminium alloy.
Therefore the present invention provides a kind of preparation method of highly corrosion resistant marine aluminium alloy.
The content of the invention
Based on technical problem existing for background technology, the present invention proposes a kind of preparation side of highly corrosion resistant marine aluminium alloy
Method.
A kind of preparation method of highly corrosion resistant marine aluminium alloy, comprises the following steps：
S1, by weight percentage, a certain amount of magnesium alloy and silicon are put into stove and heated up, furnace temperature is increased to 1080-
1200 DEG C, fine aluminium ingot is added after alloy melting, is molten into aluminum alloy melt；
S2, the temperature for reducing aluminum alloy melt add residual metallic raw material into aluminum alloy melt, stir to 900-950 DEG C, will
Refining agent is wrapped with aluminium foil, is then pressed into bell jar in molten aluminum, is refined 15-20 minutes, is skimmed；
S3, make solution temperature be maintained at 800-830 DEG C, stands 10-20 minutes, is poured into a mould after skimming and obtains aluminium alloy cast ingot；
Extrusion die and ingot casting preheating, be placed on extruder and extruded by S4, and preheating temperature is 600-620 DEG C, is squeezed
The speed of pressure is 25-45m/min；Water cooling carries out tension straingtening and obtains extrusion, wherein stretching to 30-35 DEG C after extruding
Rate is 1.5-2.5%；
S5, by the aluminium alloy after extruding carry out ungrease treatment 10-15min, so chromaking 5-10min at room temperature, washing, dry
Powder spray is carried out after dry, you can.
Preferably, the highly corrosion resistant marine aluminium alloy, includes the component of following percentage by weight：Si 1.8-
2.6%th, Fe 0.3-0.5%, Mn 0.4-1.2%, Mg 3.5-4.2%, Sc 0.9-1.5%, Cr 0.4-0.7%, Ni
0.1-0.3%, Ti 0.5-0.8%, Ce 0.09-0.15%, refining agent 1.2-2%, surplus Al.
Preferably, the refining agent is potassium chloride and potassium carbonate.
Preferably, potassium chloride and potassium carbonate weight ratio are (10-12) in the refining agent：1.
Preferably, in the step S4, the speed of extruding is 28-35m/min；Extensibility is 1.8-2.2%.
The invention has the advantages that：The present invention highly corrosion resistant marine aluminium alloy, by add in the alloy Sc,
The elements such as Ce, significantly improve the toughness and intensity of aluminium alloy；In conjunction with follow-up surface treatment procedure, obtained aluminium alloy type
Material has extraordinary corrosion resistance, meets standard peculiar to vessel.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
The present invention is further detailed explanation below.
Embodiment
The embodiment of the present invention is described in detail below, but the present invention can be limited and covered according to claim
Multitude of different ways implement.
Embodiment 1
A kind of preparation method of highly corrosion resistant marine aluminium alloy, comprises the following steps：
S1, by weight percentage, a certain amount of magnesium alloy and silicon are put into stove and heated up, and furnace temperature is increased to 1220 DEG C,
Fine aluminium ingot is added after alloy melting, is molten into aluminum alloy melt；
S2, the temperature for reducing aluminum alloy melt add residual metallic raw material into aluminum alloy melt, stirring, will refine to 935 DEG C
Agent is wrapped with aluminium foil, is then pressed into bell jar in molten aluminum, is refined 18 minutes, is skimmed；
S3, make solution temperature be maintained at 815 DEG C, stands 15 minutes, is poured into a mould after skimming and obtains aluminium alloy cast ingot；
Extrusion die and ingot casting preheating, be placed on extruder and extruded by S4, and preheating temperature is 615 DEG C, extruding
Speed is 35m/min；Water cooling carries out tension straingtening and obtains extrusion, wherein extensibility is 2.0% to 32 DEG C after extruding；
S5, by the aluminium alloy after extruding carry out ungrease treatment 12min, and so chromaking 8min at room temperature, washing, drying are laggard
Row powder spray, you can.
The highly corrosion resistant marine aluminium alloy, includes the component of following percentage by weight：Si 2.2%, Fe 0.35%,
Mn 0.8%, Mg 3.9%, Sc 1.1%, Cr 0.55%, Ni 0.15%, Ti 0.7%, Ce 0.12%, refining agent
1.7%th, surplus Al.
The refining agent is potassium chloride and potassium carbonate.
Potassium chloride and potassium carbonate weight ratio are 11 in the refining agent：1.
Embodiment 2
A kind of preparation method of highly corrosion resistant marine aluminium alloy, comprises the following steps：
S1, by weight percentage, a certain amount of magnesium alloy and silicon are put into stove and heated up, and furnace temperature is increased to 1080 DEG C,
Fine aluminium ingot is added after alloy melting, is molten into aluminum alloy melt；
S2, the temperature for reducing aluminum alloy melt add residual metallic raw material into aluminum alloy melt, stirring, will refine to 950 DEG C
Agent is wrapped with aluminium foil, is then pressed into bell jar in molten aluminum, is refined 15 minutes, is skimmed；
S3, make solution temperature be maintained at 830 DEG C, stands 10 minutes, is poured into a mould after skimming and obtains aluminium alloy cast ingot；
Extrusion die and ingot casting preheating, be placed on extruder and extruded by S4, and preheating temperature is 620 DEG C, extruding
Speed is 25m/min；Water cooling carries out tension straingtening and obtains extrusion, wherein extensibility is 1.5% to 35 DEG C after extruding；
S5, by the aluminium alloy after extruding carry out ungrease treatment 15min, and so chromaking 5min at room temperature, washing, drying are laggard
Row powder spray, you can.
The highly corrosion resistant marine aluminium alloy, includes the component of following percentage by weight：Si 2.6%, Fe 0.3%,
Mn 1.2%, Mg 3.5%, Sc 1.5%, Cr 0.4%, Ni 0.3%, Ti 0.5%, Ce 0.15%, refining agent 1.2%,
Surplus is Al.
The refining agent is potassium chloride and potassium carbonate.
Potassium chloride and potassium carbonate weight ratio are 12 in the refining agent：1.
Embodiment 3
A kind of preparation method of highly corrosion resistant marine aluminium alloy, comprises the following steps：
S1, by weight percentage, a certain amount of magnesium alloy and silicon are put into stove and heated up, and furnace temperature is increased to 1200 DEG C,
Fine aluminium ingot is added after alloy melting, is molten into aluminum alloy melt；
S2, the temperature for reducing aluminum alloy melt add residual metallic raw material into aluminum alloy melt, stirring, will refine to 900 DEG C
Agent is wrapped with aluminium foil, is then pressed into bell jar in molten aluminum, is refined 20 minutes, is skimmed；
S3, make solution temperature be maintained at 800 DEG C, stands 20 minutes, is poured into a mould after skimming and obtains aluminium alloy cast ingot；
Extrusion die and ingot casting preheating, be placed on extruder and extruded by S4, and preheating temperature is 600 DEG C, extruding
Speed is 45m/min；Water cooling carries out tension straingtening and obtains extrusion, wherein extensibility is 2.5% to 30 DEG C after extruding；
S5, by the aluminium alloy after extruding carry out ungrease treatment 10min, so chromaking 10min at room temperature, washing, it is dry after
Carry out powder spray, you can.
The highly corrosion resistant marine aluminium alloy, includes the component of following percentage by weight：Si 1.8%, Fe 0.5%,
It is Mn 0.4%, Mg 4.2%, Sc 0.9%, Cr 0.7%, Ni 0.1%, Ti 0.8%, Ce 0.09%, refining agent 2%, remaining
Measure as Al.
The refining agent is potassium chloride and potassium carbonate.
Potassium chloride and potassium carbonate weight ratio are 10 in the refining agent：1.
The physical property of the sample of embodiment 1-3 is tested below, test result is as shown in table 1:
| Tensile strength (MPa) | Elongation (%) | Elasticity modulus (MPa) | |
| Embodiment 1 | 392 | 14.7 | 1843 |
| Embodiment 2 | 388 | 14.6 | 1735 |
| Embodiment 3 | 382 | 14.9 | 1768 |
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of preparation method of highly corrosion resistant marine aluminium alloy, it is characterised in that comprise the following steps：
S1, by weight percentage, a certain amount of magnesium alloy and silicon are put into stove and heated up, and furnace temperature is increased to 1080-1200 DEG C,
Fine aluminium ingot is added after alloy melting, is molten into aluminum alloy melt；
S2, the temperature for reducing aluminum alloy melt add residual metallic raw material into aluminum alloy melt, stirring, will refine to 900-950 DEG C
Agent is wrapped with aluminium foil, is then pressed into bell jar in molten aluminum, is refined 15-20 minutes, is skimmed；
S3, make solution temperature be maintained at 800-830 DEG C, stands 10-20 minutes, is poured into a mould after skimming and obtains aluminium alloy cast ingot；
Extrusion die and ingot casting preheating, be placed on extruder and extruded by S4, and preheating temperature is 600-620 DEG C, extruding
Speed is 25-45m/min；Water cooling carries out tension straingtening and obtains extrusion, wherein extensibility is to 30-35 DEG C after extruding
1.5-2.5%；
S5, by the aluminium alloy after extruding carry out ungrease treatment 10-15min, so chromaking 5-10min at room temperature, washing, dry
After carry out powder spray, you can.
2. the preparation method of highly corrosion resistant marine aluminium alloy as claimed in claim 1, it is characterised in that the highly corrosion resistant
Marine aluminium alloy, includes the component of following percentage by weight：Si 1.8-2.6%、Fe 0.3-0.5%、Mn 0.4-1.2%、Mg
3.5-4.2%, Sc 0.9-1.5%, Cr 0.4-0.7%, Ni 0.1-0.3%, Ti 0.5-0.8%, Ce 0.09-0.15%, refining agent
1.2-2%, surplus Al.
3. the preparation method of highly corrosion resistant marine aluminium alloy as claimed in claim 1, it is characterised in that the refining agent is
Potassium chloride and potassium carbonate.
4. the preparation method of highly corrosion resistant marine aluminium alloy as claimed in claim 1, it is characterised in that in the refining agent
Potassium chloride and potassium carbonate weight ratio are（10-12）：1.
5. the preparation method of highly corrosion resistant marine aluminium alloy as claimed in claim 1, it is characterised in that the step S4
In, the speed of extruding is 28-35m/min；Extensibility is 1.8-2.2%.
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| CN201711186378.5A CN107937770A (en) | 2017-11-23 | 2017-11-23 | A kind of preparation method of highly corrosion resistant marine aluminium alloy |
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| CN201711186378.5A CN107937770A (en) | 2017-11-23 | 2017-11-23 | A kind of preparation method of highly corrosion resistant marine aluminium alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110093542A (en) * | 2019-05-07 | 2019-08-06 | 苏州慧驰轻合金精密成型科技有限公司 | Plate diecasting alloys material and preparation method in a kind of high yield high-elongation mobile phone |
| CN111690852A (en) * | 2019-03-13 | 2020-09-22 | 苏州慧驰轻合金精密成型科技有限公司 | Die-casting alloy material for high-yield high-elongation mobile phone middle plate and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111690852A (en) * | 2019-03-13 | 2020-09-22 | 苏州慧驰轻合金精密成型科技有限公司 | Die-casting alloy material for high-yield high-elongation mobile phone middle plate and preparation method thereof |
| CN111690852B (en) * | 2019-03-13 | 2022-07-05 | 苏州慧驰轻合金精密成型科技有限公司 | Die-casting alloy material for high-yield high-elongation mobile phone middle plate and preparation method thereof |
| CN110093542A (en) * | 2019-05-07 | 2019-08-06 | 苏州慧驰轻合金精密成型科技有限公司 | Plate diecasting alloys material and preparation method in a kind of high yield high-elongation mobile phone |
| CN110093542B (en) * | 2019-05-07 | 2021-07-20 | 苏州慧驰轻合金精密成型科技有限公司 | Die-casting alloy material for high-yield high-elongation mobile phone middle plate and preparation method thereof |
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Application publication date: 20180420 |