CN113584357A - Aluminum alloy for sliding bearing and preparation method thereof - Google Patents
Aluminum alloy for sliding bearing and preparation method thereof Download PDFInfo
- Publication number
- CN113584357A CN113584357A CN202110868317.7A CN202110868317A CN113584357A CN 113584357 A CN113584357 A CN 113584357A CN 202110868317 A CN202110868317 A CN 202110868317A CN 113584357 A CN113584357 A CN 113584357A
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- sliding bearing
- standing
- furnace
- cooling
- 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.)
- Pending
Links
Classifications
-
- 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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- 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
-
- 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
- C22F1/043—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 of alloys with silicon as the next major constituent
Abstract
The invention belongs to the technical field of aluminum alloy materials, and particularly relates to an aluminum alloy for a sliding bearing and a preparation method thereof. The aluminum alloy for the sliding bearing comprises the following element components in percentage by weight: si: 7-8%, Zn: 0.1-0.4%, Fe: 0.1-0.3%, Mn: 0.2-0.3%, Re: 0.4-1.0% and the balance of Al. The preparation method of the aluminum alloy for the sliding bearing comprises the following steps: proportioning, alloying, removing slag, standing, casting, homogenizing annealing and cooling. According to the invention, the mechanical properties such as strength, toughness and the like of the aluminum alloy for the sliding bearing are improved by adjusting the content of the zinc element, adding other elements and carrying out reasonable proportioning.
Description
Technical Field
The invention belongs to the technical field of aluminum alloy materials, and particularly relates to an aluminum alloy for a sliding bearing and a preparation method thereof.
Background
An alloy based on aluminum with a certain amount of other alloying elements added is one of light metal materials. The specific rigidity exceeds that of steel, and the alloy has good casting performance, plastic processing performance, good electric conduction performance, heat conduction performance, corrosion resistance and weldability, can be used as a structural material, and has wide application in aerospace, aviation, transportation, construction, electromechanics, lightening and daily necessities.
The traditional alloy materials for the bearing are babbitt alloy and copper-based alloy; the babbitt metal is expensive and has low mechanical property, and is usually cast on a bearing bush of steel (08 steel) by a casting method to form a bimetallic bearing; the copper-based alloy has better electric conductivity and heat conductivity, poorer cutting performance and stress relaxation resistance, and the shaft is easy to damage. With the development of science and technology, the working environment of the sliding bearing is more and more complex, and aluminum-based materials are also more and more used in the sliding bearing in the prior art, but the requirements on the characteristics of high temperature resistance, corrosion resistance and the like of the aluminum-based sliding bearing materials are higher and higher, and particularly the strength and toughness are further enhanced.
Disclosure of Invention
The invention provides an aluminum alloy for a sliding bearing and a preparation method thereof, aiming at solving the problem that the strength and toughness of an aluminum-based sliding bearing material are not excellent enough, so that the casting performance of the aluminum alloy is improved.
The aluminum alloy for the sliding bearing comprises the following element components in percentage by weight: si: 7-8%, Zn: 0.1-0.4%, Fe: 0.1-0.3%, Mn: 0.2-0.3%, Re: 0.4-1.0% and the balance of Al.
Further, the aluminum alloy for the sliding bearing comprises the following element components in percentage by weight: si: 7%, Zn: 0.3%, Fe: 0.2%, Mn: 0.3%, Re: 0.6 percent and the balance of Al.
The preparation method of the aluminum alloy for the sliding bearing comprises the following steps:
(1) preparing materials:
weighing Si, Zn, Fe, Mn, Al and Re according to the weight proportion for preparing materials;
(2) alloying:
putting the weighed Si, Zn, Fe, Mn, Al and Re into a smelting furnace for smelting, and uniformly stirring to prepare aluminum alloy liquid;
(3) deslagging:
using 99% pure N2Mixing with powdery refining agent, and blowing into aluminum alloy liquid for deslagging;
(4) standing:
standing the refined aluminum alloy liquid in a standing furnace;
(5) casting:
degassing the aluminum alloy liquid after standing, and casting and cooling to obtain an aluminum alloy cast rod;
(6) homogenizing and annealing:
placing the aluminum alloy cast rod into a homogenizing furnace for homogenizing annealing;
(7) and (3) cooling:
and transferring the homogenized and annealed aluminum alloy cast rod from the furnace into a cooling chamber, and cooling to obtain the aluminum alloy for the sliding bearing.
Further, in the step (2), the melting temperature is 765-770 ℃, and the melting time is 10-15 min.
Further, in the step (3), the powdered refining agent is silicon tetrafluoride.
Further, in the step (4), the standing time is 30-45min, and the temperature of the standing furnace is 735-745 ℃.
Further, in the step (5), the degassing treatment is performed by blowing Ar of 99% purity into the aluminum alloy liquid to perform degassing.
Further, in the step (6), the annealing temperature is 500-520 ℃, and the heat preservation time is 3-4 h.
The invention has the beneficial effects that:
the aluminum alloy for the pulley bearing provided by the invention has the advantages that in order to improve the casting performance of the alloy, reduce the reaction capacity of zinc to iron, reduce the corrosion to an iron material, adjust the weight percentage of zinc, increase the fluidity, refine crystal grains, cause solid solution strengthening and improve the mechanical performance.
According to the aluminum alloy for the pulley bearing, provided by the invention, the silicon element is added into the aluminum alloy liquid, so that the fluidity of the aluminum liquid is improved; the manganese element is added, so that the heat resistance of the aluminum alloy is improved; the rhenium element is added, so that the crystal grains are refined, the solid solution strengthening effect is improved, and the toughness of the strength of the aluminum alloy for the sliding bearing is enhanced. By adding other elements and carrying out reasonable proportioning, the aluminum alloy obtained by the invention realizes good casting performance and is suitable for sliding bearings.
The preparation method of the aluminum alloy for the sliding bearing, provided by the invention, is simple to operate and low in cost, and has good application value, and proper steps and parameters are selected, so that the materials are combined with each other to play the best role.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The aluminum alloy comprises the following elements in percentage by weight: si: 7%, Zn: 0.3%, Fe: 0.2%, Mn: 0.3%, Re: 0.6 percent and the balance of Al.
The preparation method of the aluminum alloy for the sliding bearing comprises the following steps:
(1) weighing Si, Zn, Fe, Mn, Al and Re according to the weight proportion for preparing materials;
(2) putting the weighed Si, Zn, Fe, Mn, Al and Re into a smelting furnace for smelting, keeping the temperature at 765 ℃, smelting for 15min, and uniformly stirring to prepare aluminum alloy liquid;
(3) using 99% pure N2Mixing with silicon tetrafluoride, blowing into aluminum alloy liquid for deslagging;
(4) standing the refined aluminum alloy liquid in a standing furnace for 45min, wherein the temperature in the standing furnace is 740 ℃;
(5) blowing Ar with the purity of 99 percent into aluminum alloy liquid for degassing treatment, and obtaining an aluminum alloy cast rod after casting and cooling;
(6) placing the aluminum alloy cast rod into a homogenizing furnace for homogenizing annealing, wherein the annealing temperature is 500 ℃, and preserving heat for 3 hours;
(7) and transferring the homogenized and annealed aluminum alloy cast rod from the furnace into a cooling chamber, and cooling to obtain the aluminum alloy for the sliding bearing.
Comparative example 1
The aluminum alloy for a sliding bearing of this comparative example was the same as example 1 except that no Re element was added.
Example 2
The aluminum alloy comprises the following elements in percentage by weight: si: 8%, Zn: 0.4%, Fe: 0.3%, Mn: 0.2 percent and the balance of Al.
The preparation method of the aluminum alloy for the sliding bearing comprises the following steps:
(1) weighing Si, Zn, Fe, Mn, Al and Re according to the weight proportion for preparing materials;
(2) putting the weighed Si, Zn, Fe, Mn, Al and Re into a smelting furnace for smelting, keeping the temperature at 770 ℃, and smelting for 10min to make the zinc and the silicon form an alloy to prepare an aluminum alloy liquid;
(3) using 99% pure N2Mixing with silicon tetrafluoride, blowing into aluminum alloy liquid for deslagging;
(4) standing the refined aluminum alloy liquid in a standing furnace for 40min, and keeping the temperature in the standing furnace at 735 ℃;
(5) blowing Ar with the purity of 99 percent into aluminum alloy liquid for degassing treatment, and obtaining an aluminum alloy cast rod after casting and cooling;
(6) placing the aluminum alloy cast rod into a homogenizing furnace for homogenizing annealing, wherein the annealing temperature is 510 ℃, and preserving heat for 4 hours;
(7) and transferring the homogenized and annealed aluminum alloy cast rod from the furnace into a cooling chamber, and cooling to obtain the aluminum alloy for the sliding bearing.
Comparative example 2
The aluminum alloy for a sliding bearing of this comparative example was the same as example 2 except that no Zn element was added.
The aluminum alloys for sliding bearings of examples 1 to 2 and comparative examples 1 to 2 were subjected to the brinell hardness tester, and the test results are shown in table 1.
TABLE 1 hardness test results of aluminum alloys for sliding bearings
As can be seen from Table 1, the hardness of the aluminum alloy for a sliding bearing of example 1-2 is significantly better than that of the aluminum alloy for a sliding bearing of comparative example 1-2, indicating that an appropriate increase in the weight percentage of Zn and the incorporation of the Re element in the aluminum alloy for a sliding bearing can increase the hardness of the aluminum alloy.
Although the present invention has been described in detail by way of preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. An aluminum alloy for a sliding bearing, characterized by comprising the following element components in percentage by weight: si: 7-8%, Zn: 0.1-0.4%, Fe: 0.1-0.3%, Mn: 0.2-0.3%, Re: 0.4-1.0% and the balance of Al.
2. An aluminum alloy for a plain bearing according to claim 1, comprising the following elemental compositions in percentage by weight: si: 7%, Zn: 0.3%, Fe: 0.2%, Mn: 0.3%, Re: 0.6 percent and the balance of Al.
3. A method for producing an aluminum alloy for a sliding bearing according to claim 1, characterized by comprising the steps of:
(1) preparing materials:
weighing Si, Zn, Fe, Mn, Al and Re according to the weight proportion for preparing materials;
(2) alloying:
putting the weighed Si, Zn, Fe, Mn, Al and Re into a smelting furnace for smelting, and uniformly stirring to prepare aluminum alloy liquid;
(3) deslagging:
using 99% pure N2Mixing with powdery refining agent, and blowing into aluminum alloy liquid for deslagging;
(4) standing:
standing the refined aluminum alloy liquid in a standing furnace;
(5) casting:
degassing the treated aluminum alloy liquid, and casting and cooling to obtain an aluminum alloy cast rod;
(6) homogenizing and annealing:
placing the aluminum alloy cast rod into a homogenizing furnace for homogenizing annealing;
(7) and (3) cooling:
and transferring the homogenized and annealed aluminum alloy cast rod from the furnace into a cooling chamber, and cooling to obtain the aluminum alloy for the sliding bearing.
4. The method for preparing an aluminum alloy for a sliding bearing as set forth in claim 3, wherein in the step (2), the melting temperature is 765-770 ℃, and the melting time is 10-15 min.
5. The method of producing an aluminum alloy for a sliding bearing according to claim 3, wherein in the step (3), the powdery refining agent is silicon tetrafluoride.
6. The method of claim 3, wherein in the step (4), the standing time is 30-45min, and the temperature of the standing furnace is 735-745 ℃.
7. A method for producing an aluminum alloy for a sliding bearing according to claim 3, wherein in the step (5): the degassing treatment comprises the following specific steps: ar of 99% purity was blown into the aluminum alloy liquid to carry out degassing.
8. The method for producing an aluminum alloy for a sliding bearing as claimed in claim 3, wherein in the step (6), the annealing temperature is 500-520 ℃ and the annealing time is 3-4 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110868317.7A CN113584357A (en) | 2021-07-30 | 2021-07-30 | Aluminum alloy for sliding bearing and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110868317.7A CN113584357A (en) | 2021-07-30 | 2021-07-30 | Aluminum alloy for sliding bearing and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113584357A true CN113584357A (en) | 2021-11-02 |
Family
ID=78252256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110868317.7A Pending CN113584357A (en) | 2021-07-30 | 2021-07-30 | Aluminum alloy for sliding bearing and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113584357A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373352A (en) * | 2010-08-07 | 2012-03-14 | 秦皇岛开发区美铝合金有限公司 | Preparation method of forging aluminum alloy for wheel hub swaging |
| CN103291762A (en) * | 2013-05-13 | 2013-09-11 | 合肥力威汽车油泵有限公司 | Anti-abrasion floating aluminum alloy bearing pedestal and preparation method thereof |
| CN112853173A (en) * | 2020-12-31 | 2021-05-28 | 山东裕航特种合金装备有限公司 | Rhenium element-added heat-resistant aluminum alloy and preparation method and application thereof |
-
2021
- 2021-07-30 CN CN202110868317.7A patent/CN113584357A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373352A (en) * | 2010-08-07 | 2012-03-14 | 秦皇岛开发区美铝合金有限公司 | Preparation method of forging aluminum alloy for wheel hub swaging |
| CN103291762A (en) * | 2013-05-13 | 2013-09-11 | 合肥力威汽车油泵有限公司 | Anti-abrasion floating aluminum alloy bearing pedestal and preparation method thereof |
| CN112853173A (en) * | 2020-12-31 | 2021-05-28 | 山东裕航特种合金装备有限公司 | Rhenium element-added heat-resistant aluminum alloy and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110066932B (en) | Moderate-strength weldable corrosion-resistant 6xxx series aluminum alloy and preparation method thereof | |
| CN102912196B (en) | Aluminum-silicon-magnesium cast aluminum alloy and manufacturing method thereof | |
| CN109136674B (en) | Graphene rare earth scandium synergistically enhanced Al-Si-Mg cast aluminum alloy and preparation method thereof | |
| WO2012169317A1 (en) | Aluminum alloy having excellent high-temperature characteristics | |
| CN102912197B (en) | A kind of aluminium silicon magnesium system cast aluminium alloy and preparation method thereof | |
| WO2020224627A1 (en) | Alloy material and production process therefor | |
| CN114032417A (en) | Erosion-corrosion-resistant copper-nickel alloy and preparation method thereof | |
| CN103789569B (en) | Bearing holder material and manufacture method thereof | |
| CN113584357A (en) | Aluminum alloy for sliding bearing and preparation method thereof | |
| CN108842103B (en) | Aluminum-based alloy with high wear resistance, high temperature resistance and low expansion coefficient | |
| WO2020115932A1 (en) | Copper alloy | |
| CN114015917B (en) | Si, Mg and Zr microalloyed AlCuMn heat-resistant aluminum alloy and heat treatment process | |
| CN113862529B (en) | Aluminum alloy and preparation method thereof | |
| CN109576538B (en) | Graphene rare earth scandium synergistically enhanced cast aluminum alloy and application thereof in aspect of automobile hub | |
| CN114672696A (en) | Ni-Co based high-temperature alloy and preparation method and application thereof | |
| CN111378876B (en) | Sc-containing aluminum alloy for vacuum pump rotor and preparation method thereof | |
| CN109609822B (en) | Semisolid forming aluminum alloy and preparation method thereof | |
| JP5522692B2 (en) | High strength copper alloy forging | |
| CN111455234B (en) | Sm-containing aluminum alloy for vacuum pump rotor and preparation method thereof | |
| CN111187941A (en) | High-strength high-toughness copper alloy material and preparation method thereof | |
| CN105132739A (en) | Lead-free brass alloy and preparing method of lead-free brass alloy | |
| CN110983215A (en) | Heat treatment method of high-strength high-heat-conductivity die-casting aluminum alloy material | |
| CN110819847A (en) | High-antimony tin-based babbitt metal material and preparation method thereof | |
| CN115874080B (en) | Copper-based alloy material and preparation method and application thereof | |
| CN112030035A (en) | Bronze alloy material for locomotive parts and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211102 |
|
| RJ01 | Rejection of invention patent application after publication |