CN111172418A - Modification method of aluminum alloy for gypsum mold investment pattern - Google Patents
Modification method of aluminum alloy for gypsum mold investment pattern Download PDFInfo
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- CN111172418A CN111172418A CN201811340244.9A CN201811340244A CN111172418A CN 111172418 A CN111172418 A CN 111172418A CN 201811340244 A CN201811340244 A CN 201811340244A CN 111172418 A CN111172418 A CN 111172418A
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- China
- Prior art keywords
- aluminum alloy
- zl101a
- zl114a
- investment pattern
- temperature
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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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
- C22C1/02—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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Dental Preparations (AREA)
Abstract
The invention discloses a method for modifying an aluminum alloy for a gypsum-type investment pattern, which adopts Al-Sr10 as a modifier to be added into a ZL101A melt, wherein the addition amount is 0.020-0.030%, and the addition temperature is 710-730 ℃. Compared with the prior art, the invention has the beneficial effects that: the adding proportion of Al-Sr10 is far less than the conventional proportion, the using amount of the modifier is small, and the cost is low; the mechanical properties of ZL101A after deterioration achieved ZL114A, especially tensile strength, and slightly exceeded ZL 114A.
Description
Technical Field
The invention relates to the technical field of aluminum alloy smelting, in particular to a method for modifying an aluminum alloy for a gypsum mold fired mold.
Background
In order to ensure the mechanical strength of the aluminum alloy for the gypsum pattern investment, the mechanical property of the aluminum alloy is generally required to reach the standard of an alloy code ZL114A aluminum alloy in the production of a plurality of aviation parts, but in the casting industry, due to low profit margin, a plurality of enterprises adopt the alloy code ZL101A aluminum alloy with low cost to replace ZL114A for production, although the main components of ZL101A and ZL114A are similar, as shown in figure 1, the mechanical property is greatly different, a casting made by using ZL101A cannot reach the performance of ZL114A, the product performance is poor, and the service life is short.
In order to improve the mechanical strength, particularly the tensile strength, of ZL101A, an alterant was added to ZL101A to change the quality. The aluminum-strontium alloy is a commonly used high-efficiency modifier at present, is generally divided into Al-Sr5 and Al-Sr10, can effectively refine eutectic silicon and primary crystal silicon in the alloy, improves the mechanical property of the alloy, and has good long-acting property of modification, remelting stability and decay resistance. The adding amount of strontium is generally controlled between 0.02 and 0.04 percent; if Al-Sr10 Al-Sr alloy is added, the addition ratio is between 0.2 and 0.4 percent. However, the mechanical strength, especially the tensile strength, of the aluminum alloy obtained by the conventional addition ratio deterioration can be improved by only about 20 percent, and the aluminum alloy can not reach the performance of ZL114A when being used on ZL 101A. The overall cost performance is low.
In order to develop enterprises, a low-cost and simple-process method is needed to perform modification treatment on ZL101A aluminum alloy, so that the mechanical property requirements of ZL114A can be met.
Disclosure of Invention
The invention aims to provide a method for modifying an aluminum alloy for a gypsum-type investment mold.
In order to achieve the purpose, the invention is implemented according to the following technical scheme: a method for modifying the Al alloy used for gypsum-type investment pattern features that Al-Sr10 is used as modifier and added to ZL101A melt at 0.020-0.030% and 710-730 deg.C.
Preferably, Al-Sr10 is added in an amount of 0.025% at a temperature of 720 ℃.
Compared with the prior art, the invention has the beneficial effects that: the adding proportion of Al-Sr10 is far less than the conventional proportion, the using amount of the modifier is small, and the cost is low; the mechanical properties of ZL101A after deterioration achieved ZL114A, especially tensile strength, and slightly exceeded ZL 114A.
Drawings
FIG. 1 is a table comparing the performance of ZL101A and ZL114A of the prior art.
Detailed Description
The invention will be further described with reference to the drawings and specific embodiments, which are illustrative of the invention and are not to be construed as limiting the invention.
Example 1
Slowly adding Al-Sr10 into molten ZL101A, and keeping the temperature for 1 hour, wherein the adding amount of Al-Sr10 is 0.020%, and the adding temperature is 710 ℃.
Example 2
Slowly adding Al-Sr10 into molten ZL101A, and keeping the temperature for 1 hour, wherein the adding amount of Al-Sr10 is 0.022%, and the adding temperature is 710 ℃.
Example 3
Slowly adding Al-Sr10 into molten ZL101A, and keeping the temperature for 1 hour, wherein the adding amount of Al-Sr10 is 0.025%, and the adding temperature is 720 ℃.
Example 4
Slowly adding Al-Sr10 into molten ZL101A, and keeping the temperature for 1 hour, wherein the adding amount of Al-Sr10 is 0.030%, and the adding temperature is 730 ℃.
Example 5
Slowly adding Al-Sr10 into molten ZL101A, and keeping the temperature for 1 hour, wherein the adding amount of Al-Sr10 is 0.025%, and the adding temperature is 730 ℃.
Example 6
Slowly adding Al-Sr10 into molten ZL101A, and keeping the temperature for 1 hour, wherein the adding amount of Al-Sr10 is 0.025%, and the adding temperature is 720 ℃.
As shown in the performance reference table of ZL101A and ZL114A in standard HB962-2001 cast aluminum alloy shown in FIG. 1, it is clear that the difference between the mechanical properties of ZL101A and ZL114A before deterioration is large.
The tensile strength of the deteriorated ZL101A aluminum alloy in examples 1-6 as shown in table 1 has reached the strength of ZL114A of fig. 1, even slightly exceeding.
Table 1: performance tables for ZL101A after deterioration in examples 1-6
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (2)
1. A method for modifying an aluminum alloy for a gypsum mold fired mold is characterized by comprising the following steps: Al-Sr10 is used as modifier and added into ZL101A melt at the addition of 0.020-0.030% and 710-730 deg.C.
2. The method of modifying an aluminum alloy for a gypsum-type investment pattern as set forth in claim 1, wherein: the addition amount of Al-Sr10 was 0.025%, and the addition temperature was 720 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340244.9A CN111172418A (en) | 2018-11-12 | 2018-11-12 | Modification method of aluminum alloy for gypsum mold investment pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340244.9A CN111172418A (en) | 2018-11-12 | 2018-11-12 | Modification method of aluminum alloy for gypsum mold investment pattern |
Publications (1)
| Publication Number | Publication Date |
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| CN111172418A true CN111172418A (en) | 2020-05-19 |
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| CN201811340244.9A Pending CN111172418A (en) | 2018-11-12 | 2018-11-12 | Modification method of aluminum alloy for gypsum mold investment pattern |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316536A (en) * | 2001-03-15 | 2001-10-10 | 山东大学 | Al-alloy material for hub of car and its preparing process |
| CN101514420A (en) * | 2009-04-13 | 2009-08-26 | 清华大学 | Aluminum alloy for automobile wheel hub |
| CN101624669A (en) * | 2008-07-11 | 2010-01-13 | 荆门航特有色金属铸造有限公司 | ZL101A aluminum-silicon alloy |
| CN102251135A (en) * | 2011-08-05 | 2011-11-23 | 中信戴卡轮毂制造股份有限公司 | Improved aluminum liquid refining process |
| CN103695821A (en) * | 2014-01-06 | 2014-04-02 | 山东建筑大学 | Heat treatment process for casting Al-Si-Mg alloy |
| CN104099496A (en) * | 2013-04-02 | 2014-10-15 | 广东肇庆动力技研有限公司 | High-strength high-toughness aluminum-silicon alloy obtained by gravity casting and preparation method thereof |
| US9284636B1 (en) * | 2011-12-21 | 2016-03-15 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Impact toughness and heat treatment for cast aluminum |
| CN108004440A (en) * | 2017-11-22 | 2018-05-08 | 浙江泰龙科技有限公司 | A kind of A356 aluminium alloy castingses and its heat treatment process |
-
2018
- 2018-11-12 CN CN201811340244.9A patent/CN111172418A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316536A (en) * | 2001-03-15 | 2001-10-10 | 山东大学 | Al-alloy material for hub of car and its preparing process |
| CN101624669A (en) * | 2008-07-11 | 2010-01-13 | 荆门航特有色金属铸造有限公司 | ZL101A aluminum-silicon alloy |
| CN101514420A (en) * | 2009-04-13 | 2009-08-26 | 清华大学 | Aluminum alloy for automobile wheel hub |
| CN102251135A (en) * | 2011-08-05 | 2011-11-23 | 中信戴卡轮毂制造股份有限公司 | Improved aluminum liquid refining process |
| US9284636B1 (en) * | 2011-12-21 | 2016-03-15 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Impact toughness and heat treatment for cast aluminum |
| CN104099496A (en) * | 2013-04-02 | 2014-10-15 | 广东肇庆动力技研有限公司 | High-strength high-toughness aluminum-silicon alloy obtained by gravity casting and preparation method thereof |
| CN103695821A (en) * | 2014-01-06 | 2014-04-02 | 山东建筑大学 | Heat treatment process for casting Al-Si-Mg alloy |
| CN108004440A (en) * | 2017-11-22 | 2018-05-08 | 浙江泰龙科技有限公司 | A kind of A356 aluminium alloy castingses and its heat treatment process |
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Application publication date: 20200519 |
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