CN110548855A - shock-absorbing sound-insulating aluminum alloy material and preparation method thereof - Google Patents
shock-absorbing sound-insulating aluminum alloy material and preparation method thereof Download PDFInfo
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- CN110548855A CN110548855A CN201910879542.3A CN201910879542A CN110548855A CN 110548855 A CN110548855 A CN 110548855A CN 201910879542 A CN201910879542 A CN 201910879542A CN 110548855 A CN110548855 A CN 110548855A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
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- 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
- C22C1/08—Alloys with open or closed pores
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- 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
- C22C1/08—Alloys with open or closed pores
- C22C1/083—Foaming process in molten metal other than by powder metallurgy
- C22C1/086—Gas foaming process
-
- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0005—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with at least one oxide and at least one of carbides, nitrides, borides or silicides as the main non-metallic constituents
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention provides a cushioning and sound insulation aluminum alloy material and a preparation method thereof, wherein the method comprises the following steps: step 1: preheating a die of a casting and forging press at the preheating temperature of 280-310 ℃; step 2: closing the casting and forging machine die, pouring 2A50 aluminum alloy and 2036 aluminum alloy solution into a charging barrel, starting an auxiliary pressure device to punch the alloy solution into a die cavity of the die, maintaining the pressure at 80-130MPa, and then starting forging for 3-8 s; and step 3: taking out the formed composite aluminum alloy forging, wherein the forging is a hollow sheet; and 4, step 4: inserting a foamed aluminum sheet into the hollow part of the composite aluminum alloy forging to carry out tight and complete filling; and 5: and carrying out heat treatment on the mixture to obtain the product. The cushioning and sound insulation aluminum alloy material disclosed by the invention has good mechanical properties, has a good cushioning and sound insulation effect, saves materials and reduces the cost.
Description
Technical Field
The invention relates to the field of metal materials, in particular to a cushioning and sound insulation aluminum alloy material and a preparation method thereof.
background
An Engine (Engine) is a machine capable of converting other forms of energy into mechanical energy, and includes, for example, an internal combustion Engine (gasoline Engine, etc.), an external combustion Engine (stirling Engine, steam Engine, etc.), an electric motor, etc., and the Engine also requires some auxiliary molds to be installed in cooperation with the Engine during assembly, and an Engine cover thereof is an indispensable one. The traditional engine hood material is generally an aluminum alloy material, and the aluminum alloy has better corrosion resistance and lighter specific gravity, so that the aluminum alloy has wider and wider application in the automobile industry with the increasingly accelerated light weight process. The research on aluminum alloy materials for automobiles is also receiving more and more attention from the industry. But general aluminum alloy material does not have fine bradyseism and carries out the isolated effect of eliminating of noise, and the car is great in the noise of driving in-process, and the engine also constantly shakes, has reduced life. Therefore, the research and development of the cushioning and sound insulation aluminum alloy material for the automobile engine cover have great practical significance.
Disclosure of Invention
The technical problem to be solved is as follows: the invention aims to provide a cushioning and sound insulation aluminum alloy material which not only has good mechanical properties, but also has good cushioning and sound insulation effects, and simultaneously saves materials and reduces cost.
The technical scheme is as follows: the preparation method of the cushioning and sound insulation aluminum alloy material comprises the following steps:
step 1: preheating a die of a casting and forging press at the preheating temperature of 280-310 ℃;
step 2: closing the casting and forging machine die, pouring 2A50 aluminum alloy and 2036 aluminum alloy solution into a charging barrel, starting an auxiliary pressure device to punch the alloy solution into a die cavity of the die, maintaining the pressure at 80-130MPa, and then starting forging for 3-8 s;
and step 3: taking out the formed composite aluminum alloy forging, wherein the forging is a hollow sheet;
and 4, step 4: inserting a foamed aluminum sheet into the hollow part of the composite aluminum alloy forging to carry out tight and complete filling;
And 5: and carrying out heat treatment on the mixture to obtain the product.
Further preferably, the ratio of the 2A50 aluminum alloy to the 2036 aluminum alloy is 1: 4-5.
further preferably, the heat treatment process comprises: solution heat treatment is carried out for 6h at the temperature of 520-550 ℃, aging heat treatment is carried out for 3.5 h at the temperature of 280-290 ℃ after water cooling, and air cooling is carried out.
Further preferably, the hollow sheet has an overall thickness of 3 to 4mm and a hollow thickness of 0.5 to 0.8 mm.
further preferably, the preparation method of the foamed aluminum comprises the following steps:
(1) oxidizing titanium hydride powder at 480 ℃ for 2 h;
(2) taking out, adding aluminum powder, magnesium powder and silicon powder, uniformly mixing, and performing extrusion forming, wherein the mass ratio of the titanium hydride powder to the aluminum powder to the magnesium powder to the silicon powder is 1:72:10: 7;
(3) Sealing in a sealed mould at 680 deg.C, and foaming for 3-9 min.
has the advantages that:
1. In the invention, proper amount of magnesium powder is added into the inserted foamed aluminum to reduce the surface tension of the molten liquid, and the magnesium powder reacts with aluminum oxide to form MgAl 2 O 4 phase with good wettability in Al melt, and the MgAl 2 O 4 phase is uniformly distributed on the foam wall to inhibit capillary liquid discharge and improve the pore structure of the foam body, and Si in the melt can react with Mg to generate fine and dispersed Mg 2 Si particles which are distributed in the pore wall to increase the viscosity of the melt body and generate a particle stabilizing mechanism, thereby improving the pore structure of the foam body.
2. According to the invention, the aluminum alloy is made into the hollow sheet, the hollow sheet not only saves materials, but also can greatly improve the sound insulation effect due to the buffering of air and the insertion of foamed aluminum.
3. the cushioning and sound insulation aluminum alloy material has good performance indexes, wherein the yield strength and the tensile strength are respectively 190.9MPa and 257MPa, and the material has good mechanical properties. The shock absorption work can reach 67.9J, the shock absorption effect is good, meanwhile, the sound insulation quantity is as high as 57dB, and the sound insulation effect is good.
Detailed Description
example 1
the preparation method of the cushioning and sound insulation aluminum alloy material comprises the following steps:
step 1: preheating a die of a casting and forging press at the preheating temperature of 280 ℃;
Step 2: closing a casting and forging machine die, pouring 2A50 aluminum alloy and 2036 aluminum alloy solution into a charging barrel, starting an auxiliary pressure device to punch the alloy solution into a cavity of the die, maintaining the pressure at 80MPa, and then starting forging for 3s, wherein the ratio of the 2A50 aluminum alloy to the 2036 aluminum alloy is 1: 4;
And step 3: taking out the formed composite aluminum alloy forging, wherein the forging is a hollow sheet, the whole thickness of the hollow sheet is 3mm, and the hollow thickness is 0.5 mm;
and 4, step 4: inserting a foamed aluminum sheet into the hollow part of the composite aluminum alloy forging for tight and complete filling, wherein the preparation method of the foamed aluminum comprises the following steps:
(1) Oxidizing titanium hydride powder at 480 ℃ for 2 h;
(2) Taking out, adding aluminum powder, magnesium powder and silicon powder, uniformly mixing, and performing extrusion forming, wherein the mass ratio of the titanium hydride powder to the aluminum powder to the magnesium powder to the silicon powder is 1:72:10: 7;
(3) Sealing in a closed mold at 680 deg.C, and foaming for 3 min;
and 5: performing solution heat treatment at 520 ℃ for 6h, performing aging heat treatment at 280 ℃ for 3.5 h after water cooling, and performing air cooling to obtain the product.
example 2
the preparation method of the cushioning and sound insulation aluminum alloy material comprises the following steps:
Step 1: preheating a die of a casting and forging press at 290 ℃;
Step 2: closing a casting and forging machine die, pouring 2A50 aluminum alloy and 2036 aluminum alloy solution into a charging barrel, starting an auxiliary pressure device to punch the alloy solution into a cavity of the die, maintaining the pressure at 90MPa, and then starting forging for 4s, wherein the ratio of the 2A50 aluminum alloy to the 2036 aluminum alloy is 1: 4;
And step 3: taking out the formed composite aluminum alloy forging, wherein the forging is a hollow sheet, the whole thickness of the hollow sheet is 3.5mm, and the hollow thickness is 0.6 mm;
and 4, step 4: inserting a foamed aluminum sheet into the hollow part of the composite aluminum alloy forging for tight and complete filling, wherein the preparation method of the foamed aluminum comprises the following steps:
(1) Oxidizing titanium hydride powder at 480 ℃ for 2 h;
(2) Taking out, adding aluminum powder, magnesium powder and silicon powder, uniformly mixing, and performing extrusion forming, wherein the mass ratio of the titanium hydride powder to the aluminum powder to the magnesium powder to the silicon powder is 1:72:10: 7;
(3) sealing in a closed mold at 680 deg.C, and foaming for 5 min;
and 5: carrying out solution heat treatment for 6h at 530 ℃, carrying out aging heat treatment for 3.5 h at 285 ℃ after water cooling, and carrying out air cooling to obtain the product.
example 3
the preparation method of the cushioning and sound insulation aluminum alloy material comprises the following steps:
Step 1: preheating a die of a casting and forging press at the preheating temperature of 300 ℃;
Step 2: closing a casting and forging machine die, pouring 2A50 aluminum alloy and 2036 aluminum alloy solution into a charging barrel, starting an auxiliary pressure device to punch the alloy solution into a cavity of the die, maintaining the pressure at 100MPa, and then starting forging for 6s, wherein the ratio of the 2A50 aluminum alloy to the 2036 aluminum alloy is 1: 4.5;
And step 3: taking out the formed composite aluminum alloy forging, wherein the forging is a hollow sheet, the overall thickness of the hollow sheet is 3-4mm, and the hollow thickness is 0.7 mm;
and 4, step 4: inserting a foamed aluminum sheet into the hollow part of the composite aluminum alloy forging for tight and complete filling, wherein the preparation method of the foamed aluminum comprises the following steps:
(1) Oxidizing titanium hydride powder at 480 ℃ for 2 h;
(2) Taking out, adding aluminum powder, magnesium powder and silicon powder, uniformly mixing, and performing extrusion forming, wherein the mass ratio of the titanium hydride powder to the aluminum powder to the magnesium powder to the silicon powder is 1:72:10: 7;
(3) sealing in a closed mold at 680 deg.C, and foaming for 6 min;
and 5: performing solution heat treatment at 540 ℃ for 6h, performing water cooling, performing aging heat treatment at 285 ℃ for 3.5 h, and cooling in air.
example 4
the preparation method of the cushioning and sound insulation aluminum alloy material comprises the following steps:
Step 1: preheating a die of a casting and forging press at the preheating temperature of 300 ℃;
step 2: closing a casting and forging machine die, pouring 2A50 aluminum alloy and 2036 aluminum alloy solution into a charging barrel, starting an auxiliary pressure device to punch the alloy solution into a cavity of the die, maintaining the pressure at 120MPa, and then starting forging for 7s, wherein the ratio of the 2A50 aluminum alloy to the 2036 aluminum alloy is 1: 5;
and step 3: taking out the formed composite aluminum alloy forging, wherein the forging is a hollow sheet, the whole thickness of the hollow sheet is 4mm, and the hollow thickness is 0.7 mm;
and 4, step 4: inserting a foamed aluminum sheet into the hollow part of the composite aluminum alloy forging for tight and complete filling, wherein the preparation method of the foamed aluminum comprises the following steps:
(1) Oxidizing titanium hydride powder at 480 ℃ for 2 h;
(2) taking out, adding aluminum powder, magnesium powder and silicon powder, uniformly mixing, and performing extrusion forming, wherein the mass ratio of the titanium hydride powder to the aluminum powder to the magnesium powder to the silicon powder is 1:72:10: 7;
(3) sealing in a closed mold at 680 deg.C, and foaming for 8 min;
and 5: performing solution heat treatment at 540 ℃ for 6h, performing water cooling, performing aging heat treatment at 285 ℃ for 3.5 h, and cooling in air.
Example 5
the preparation method of the cushioning and sound insulation aluminum alloy material comprises the following steps:
step 1: preheating a die of a casting and forging press at the preheating temperature of 310 ℃;
step 2: closing a casting and forging machine die, pouring 2A50 aluminum alloy and 2036 aluminum alloy solution into a charging barrel, starting an auxiliary pressure device to punch the alloy solution into a cavity of the die, maintaining the pressure at 130MPa, and then starting forging for 8s, wherein the ratio of the 2A50 aluminum alloy to the 2036 aluminum alloy is 1: 5;
And step 3: taking out the formed composite aluminum alloy forging, wherein the forging is a hollow sheet, the whole thickness of the hollow sheet is 4mm, and the hollow thickness is 0.8 mm;
And 4, step 4: inserting a foamed aluminum sheet into the hollow part of the composite aluminum alloy forging for tight and complete filling, wherein the preparation method of the foamed aluminum comprises the following steps:
(1) oxidizing titanium hydride powder at 480 ℃ for 2 h;
(2) taking out, adding aluminum powder, magnesium powder and silicon powder, uniformly mixing, and performing extrusion forming, wherein the mass ratio of the titanium hydride powder to the aluminum powder to the magnesium powder to the silicon powder is 1:72:10: 7;
(3) Sealing in a closed mold at 680 deg.C, and foaming for 9 min;
and 5: carrying out solution heat treatment for 6h at 550 ℃, carrying out aging heat treatment for 3.5 h at 290 ℃ after water cooling, and carrying out air cooling to obtain the product.
Comparative example 1
this embodiment is different from embodiment 1 in that a shock-absorbing resin sheet is used instead of the foamed aluminum sheet. Specifically, the method comprises the following steps:
The preparation method of the cushioning and sound insulation aluminum alloy material comprises the following steps:
Step 1: preheating a die of a casting and forging press at the preheating temperature of 280 ℃;
step 2: closing a casting and forging machine die, pouring 2A50 aluminum alloy and 2036 aluminum alloy solution into a charging barrel, starting an auxiliary pressure device to punch the alloy solution into a cavity of the die, maintaining the pressure at 80MPa, and then starting forging for 3s, wherein the ratio of the 2A50 aluminum alloy to the 2036 aluminum alloy is 1: 4;
And step 3: taking out the formed composite aluminum alloy forging, wherein the forging is a hollow sheet, the whole thickness of the hollow sheet is 3mm, and the hollow thickness is 0.5 mm;
and 4, step 4: inserting the damping resin sheet into the hollow part of the composite aluminum alloy forging for tight and complete filling;
and 5: performing solution heat treatment at 520 ℃ for 6h, performing aging heat treatment at 280 ℃ for 3.5 h after water cooling, and performing air cooling to obtain the product.
The tensile test is carried out by GB/T228-2010 Metal Material Room temperature tensile test method.
An impact test is carried out by GB/T229-2007 method for testing impact of metal materials by charpy pendulum bob.
GB/T19885 and 2005 Sound insulation performance determination laboratory and field measurement of the acoustic sound insulation booth are adopted to carry out sound insulation tests.
TABLE 1 Performance index of the bradyseism and sound insulation aluminum alloy material
as can be seen from Table 1, the performance indexes of examples 1-5 are that the yield strength and the tensile strength are respectively as high as 190.9MPa and 257MPa, and the mechanical properties are good. The shock absorption work can reach 67.9J, the shock absorption effect is good, meanwhile, the sound insulation quantity is as high as 57dB, and the sound insulation effect is good. From the data of comparative example 1 and example 5, it is seen that inserting foamed aluminum sheets is superior to shock-absorbing and sound-insulating effects of the shock-absorbing resin sheets.
Claims (6)
1. the preparation method of the cushioning and sound insulation aluminum alloy material is characterized by comprising the following steps of: the method comprises the following steps:
Step 1: preheating a die of a casting and forging press at the preheating temperature of 280-310 ℃;
Step 2: closing the casting and forging machine die, pouring 2A50 aluminum alloy and 2036 aluminum alloy solution into a charging barrel, starting an auxiliary pressure device to punch the alloy solution into a die cavity of the die, maintaining the pressure at 80-130MPa, and then starting forging for 3-8 s;
and step 3: taking out the formed composite aluminum alloy forging, wherein the forging is a hollow sheet;
and 4, step 4: inserting a foamed aluminum sheet into the hollow part of the composite aluminum alloy forging to carry out tight and complete filling;
And 5: and carrying out heat treatment on the mixture to obtain the product.
2. The preparation method of the cushioning and sound-insulating aluminum alloy material as claimed in claim 1, wherein: the ratio of the 2A50 aluminum alloy to the 2036 aluminum alloy is 1: 4-5.
3. the preparation method of the cushioning and sound-insulating aluminum alloy material as claimed in claim 1, wherein: the heat treatment process comprises the following steps: solution heat treatment is carried out for 6h at the temperature of 520-550 ℃, aging heat treatment is carried out for 3.5 h at the temperature of 280-290 ℃ after water cooling, and air cooling is carried out.
4. the preparation method of the cushioning and sound-insulating aluminum alloy material as claimed in claim 1, wherein: the hollow sheet material has an overall thickness of 3-4mm and a hollow thickness of 0.5-0.8 mm.
5. The preparation method of the cushioning and sound-insulating aluminum alloy material as claimed in claim 1, wherein: the preparation method of the foamed aluminum comprises the following steps:
(1) oxidizing titanium hydride powder at 480 ℃ for 2 h;
taking out, adding aluminum powder, magnesium powder and silicon powder, uniformly mixing, and performing extrusion forming, wherein the mass ratio of the titanium hydride powder to the aluminum powder to the magnesium powder to the silicon powder is 1:72:10: 7;
sealing in a sealed mould at 680 deg.C, and foaming for 3-9 min.
6. the cushioning and sound-insulating aluminum alloy material prepared by the preparation method of the cushioning and sound-insulating aluminum alloy material according to any one of claims 1 to 5.
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| JP2000178604A (en) * | 1998-12-08 | 2000-06-27 | Mitsubishi Materials Corp | Manufacture of high-strength sponge-like porous metallic composite plate having reinforcement layer provided with punching hole inside |
| JP2007105759A (en) * | 2005-10-13 | 2007-04-26 | Kobe Steel Ltd | Composite member filled with foamed metal body |
| CN104889676A (en) * | 2015-04-16 | 2015-09-09 | 新疆大学 | Foam aluminum alloy-made wheel hub preparation method |
| CN108977683A (en) * | 2018-08-23 | 2018-12-11 | 四会市亿和铝业有限公司 | Applied to the light-weighted foamed aluminum materials production method of arrangements for automotive doors |
| CN109536789A (en) * | 2018-12-29 | 2019-03-29 | 安徽鑫发铝业有限公司 | A kind of ultra-thin hollow high-speed rail aluminum profile |
| CN109652674A (en) * | 2019-01-18 | 2019-04-19 | 清华大学 | Powder metallurgic method prepares the foaming method of foam metal |
| CN109835359A (en) * | 2019-03-07 | 2019-06-04 | 中车株洲电力机车有限公司 | A kind of aluminum matrix composite rail vehicle |
| CN110193606A (en) * | 2019-05-21 | 2019-09-03 | 安徽工业大学 | A kind of aluminum alloy foam sandwich constructional foaming presoma, preparation method and application |
-
2019
- 2019-09-18 CN CN201910879542.3A patent/CN110548855A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000178604A (en) * | 1998-12-08 | 2000-06-27 | Mitsubishi Materials Corp | Manufacture of high-strength sponge-like porous metallic composite plate having reinforcement layer provided with punching hole inside |
| JP2007105759A (en) * | 2005-10-13 | 2007-04-26 | Kobe Steel Ltd | Composite member filled with foamed metal body |
| CN104889676A (en) * | 2015-04-16 | 2015-09-09 | 新疆大学 | Foam aluminum alloy-made wheel hub preparation method |
| CN108977683A (en) * | 2018-08-23 | 2018-12-11 | 四会市亿和铝业有限公司 | Applied to the light-weighted foamed aluminum materials production method of arrangements for automotive doors |
| CN109536789A (en) * | 2018-12-29 | 2019-03-29 | 安徽鑫发铝业有限公司 | A kind of ultra-thin hollow high-speed rail aluminum profile |
| CN109652674A (en) * | 2019-01-18 | 2019-04-19 | 清华大学 | Powder metallurgic method prepares the foaming method of foam metal |
| CN109835359A (en) * | 2019-03-07 | 2019-06-04 | 中车株洲电力机车有限公司 | A kind of aluminum matrix composite rail vehicle |
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