CN112048636A - Method for improving tensile strength and grain refinement of brass strip material - Google Patents
Method for improving tensile strength and grain refinement of brass strip material Download PDFInfo
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- CN112048636A CN112048636A CN202010909291.1A CN202010909291A CN112048636A CN 112048636 A CN112048636 A CN 112048636A CN 202010909291 A CN202010909291 A CN 202010909291A CN 112048636 A CN112048636 A CN 112048636A
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- brass
- smelting furnace
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
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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
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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
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a method for improving tensile strength and grain refinement of a brass strip material, which comprises the following steps: pouring the prepared brass material into a pre-prepared smelting furnace, preheating the smelting furnace, drying the surface, completely placing the brass material into the smelting furnace for smelting, and filtering impurities; adding the raw materials into a melting furnace for multiple times according to a specified component formula, carrying out casting to obtain an alloy ingot blank, wherein the casting temperature is 1500-1600 ℃, weighing La element, preparing rare earth element La, and adding a certain amount of La into the melted brass solution after the preparation is finished. According to the invention, the secondary annealing and cold rolling steps are added in the processing steps of the brass band, so that the production quality and the structural strength of the brass band are further enhanced, the produced brass band is not easy to break, the impurities contained in the brass solution are filtered for many times in the smelting process, and the formed product does not contain particle impurities.
Description
Technical Field
The invention relates to the technical field of grain refinement, in particular to a method for improving tensile strength and grain refinement of a brass strip material.
Background
The brass is an alloy consisting of copper and zinc, the brass consisting of copper and zinc is called as common brass, if the brass is a plurality of alloys consisting of more than two elements, the brass is called as special brass, the brass has stronger wear resistance, the brass is often used for manufacturing valves, water pipes, connecting pipes of internal and external machines of air conditioners, radiators and the like, the ideal ingot casting structure is that the whole section of the ingot casting has uniform and fine isometric crystals, because the isometric crystals have small anisotropy, uniform deformation during processing, excellent performance and good plasticity, the casting and the subsequent plastic processing are facilitated, the refining treatment is usually needed to the melt to obtain the structure, the crystal grains can be refined when the treatment method for the brass in China at present has great defects, the produced brass strip has rough surface, lower structural strength and poorer quality, the surface is easy to crack, and the use is limited, thereby limiting the development of the brass industry.
Disclosure of Invention
The invention aims to provide a method for improving the tensile strength and grain refinement of a brass strip material, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a method for improving tensile strength and grain refinement of a brass strip material comprises the following steps:
s1, pouring the prepared brass material into a pre-prepared smelting furnace, preheating the smelting furnace, drying the surface of the smelting furnace, putting the whole smelting furnace into the smelting furnace for smelting, and filtering impurities;
s2, adding the raw materials into a melting furnace for multiple times according to a specified component formula, carrying out casting to obtain an alloy ingot blank, wherein the casting temperature is 1500-1600 ℃, weighing La element, preparing rare earth element La, and adding a certain amount of La element into the melted brass solution after the preparation is finished;
s3, stirring the brass solution smelted in the smelting furnace, standing for a period of time, and pouring out the solution for casting blank rolling;
s4, taking out the formed rough copper strip, cutting the rough copper strip into a copper strip with a size according with cutting equipment, and then annealing again;
s5, carrying out hot rolling, cooling and forming on the copper strip subjected to the secondary annealing treatment, and sequentially carrying out stretch bending straightening treatment and longitudinal shearing finishing treatment to obtain the fine copper strip.
Preferably, the material components added in step S1 are respectively: mg0.03-0.04%, Ni0.01-0.03%, Si0.01-0.04%, and Sm0.002-0.006%, and the specific weight components are as follows: mg0.035%, Ni0.02%, Si0.013% and Sm0.004%.
Preferably, the brass solution is stirred in step S3 for 0.5h or less, and then is allowed to stand for 1h again, and impurities floating on the surface are cleaned.
Preferably, the annealing temperature in the step S4 is 600-800 ℃, and then cooling is carried out for 2 h.
Preferably, the hot rolling process parameters in step S5 are specifically: heating at 900-1000 deg.C for 3h, naturally cooling for 1.5h, and cooling with water.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the secondary annealing and cold rolling steps are added in the processing steps of the brass band, so that the production quality and the structural strength of the brass band are further enhanced, the produced brass band is not easy to break, the impurities contained in the brass solution are filtered for many times in the smelting process, the formed product does not contain particle impurities, and the product quality is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
In order to achieve the purpose, the invention provides the following technical scheme: a method for improving tensile strength and grain refinement of a brass strip material comprises the following steps:
s1, pouring the prepared brass material into a pre-prepared smelting furnace, preheating the smelting furnace, drying the surface of the smelting furnace, putting the whole smelting furnace into the smelting furnace for smelting, and filtering impurities;
s2, adding the raw materials into a melting furnace for multiple times according to a specified component formula, carrying out casting to obtain an alloy ingot blank, wherein the casting temperature is 1500-1600 ℃, weighing La element, preparing rare earth element La, and adding a certain amount of La element into the melted brass solution after the preparation is finished;
s3, stirring the brass solution smelted in the smelting furnace, standing for a period of time, and pouring out the solution for casting blank rolling;
s4, taking out the formed rough copper strip, cutting the rough copper strip into a copper strip with a size according with cutting equipment, and then annealing again;
s5, carrying out hot rolling, cooling and forming on the copper strip subjected to the secondary annealing treatment, and sequentially carrying out stretch bending straightening treatment and longitudinal shearing finishing treatment to obtain the fine copper strip.
The first embodiment is as follows:
a method for improving tensile strength and grain refinement of a brass strip material comprises the following steps:
s1, pouring the prepared brass material into a pre-prepared smelting furnace, preheating the smelting furnace, drying the surface of the smelting furnace, putting the whole smelting furnace into the smelting furnace for smelting, and filtering impurities;
s2, the added material components are respectively: mg0.03-0.04%, Ni0.01-0.03%, Si0.01-0.04%, and Sm0.002-0.006%, and the specific weight components are as follows: mg0.035%, Ni0.02%, Si0.013% and Sm0.004%, adding the raw materials into a melting furnace for multiple times according to a specified component formula, carrying out casting to obtain an alloy ingot blank, wherein the casting temperature is 1500-1600 ℃, weighing La element, preparing rare earth element La, and adding a certain amount of La into the melted brass solution after the preparation is finished;
s3, stirring the brass solution smelted in the smelting furnace, standing for a period of time, and pouring out the solution for casting blank rolling;
s4, taking out the formed rough copper strip, cutting the rough copper strip into a copper strip with a size according with cutting equipment, and then annealing again;
s5, carrying out hot rolling, cooling and forming on the copper strip subjected to the secondary annealing treatment, and sequentially carrying out stretch bending straightening treatment and longitudinal shearing finishing treatment to obtain the fine copper strip.
Example two:
a method for improving tensile strength and grain refinement of a brass strip material comprises the following steps:
s1, pouring the prepared brass material into a pre-prepared smelting furnace, preheating the smelting furnace, drying the surface of the smelting furnace, putting the whole smelting furnace into the smelting furnace for smelting, and filtering impurities;
s2, adding the raw materials into a melting furnace for multiple times according to a specified component formula, carrying out casting to obtain an alloy ingot blank, wherein the casting temperature is 1500-1600 ℃, weighing La element, preparing rare earth element La, and adding a certain amount of La element into the melted brass solution after the preparation is finished;
s3, stirring the brass solution smelted in the smelting furnace, controlling the stirring time of the brass solution within 0.5h, then standing for 1h again, cleaning impurities floating on the surface, and standing for a period of time to pour out the mixture for casting blank rolling;
s4, taking out the formed rough copper strip, cutting the rough copper strip into a copper strip with a size according with cutting equipment, and then annealing again;
s5, carrying out hot rolling, cooling and forming on the copper strip subjected to the secondary annealing treatment, and sequentially carrying out stretch bending straightening treatment and longitudinal shearing finishing treatment to obtain the fine copper strip.
Example three:
a method for improving tensile strength and grain refinement of a brass strip material comprises the following steps:
s1, pouring the prepared brass material into a pre-prepared smelting furnace, preheating the smelting furnace, drying the surface of the smelting furnace, putting the whole smelting furnace into the smelting furnace for smelting, and filtering impurities;
s2, adding the raw materials into a melting furnace for multiple times according to a specified component formula, carrying out casting to obtain an alloy ingot blank, wherein the casting temperature is 1500-1600 ℃, weighing La element, preparing rare earth element La, and adding a certain amount of La element into the melted brass solution after the preparation is finished;
s3, stirring the brass solution smelted in the smelting furnace, standing for a period of time, and pouring out the solution for casting blank rolling;
s4, taking out the formed rough copper strip, cutting the rough copper strip into a copper strip with a size according with cutting equipment, then carrying out annealing treatment again, wherein the annealing temperature is 600-800 ℃, and then cooling for 2 h;
s5, carrying out hot rolling, cooling and forming on the copper strip subjected to the secondary annealing treatment, and sequentially carrying out stretch bending straightening treatment and longitudinal shearing finishing treatment to obtain the fine copper strip.
Example four:
a method for improving tensile strength and grain refinement of a brass strip material comprises the following steps:
s1, pouring the prepared brass material into a pre-prepared smelting furnace, preheating the smelting furnace, drying the surface of the smelting furnace, putting the whole smelting furnace into the smelting furnace for smelting, and filtering impurities;
s2, adding the raw materials into a melting furnace for multiple times according to a specified component formula, carrying out casting to obtain an alloy ingot blank, wherein the casting temperature is 1500-1600 ℃, weighing La element, preparing rare earth element La, and adding a certain amount of La element into the melted brass solution after the preparation is finished;
s3, stirring the brass solution smelted in the smelting furnace, standing for a period of time, and pouring out the solution for casting blank rolling;
s4, taking out the formed rough copper strip, cutting the rough copper strip into a copper strip with a size according with cutting equipment, and then annealing again;
s5, carrying out hot rolling cooling forming on the copper strip subjected to the secondary annealing treatment, wherein the hot rolling treatment parameters are as follows: heating at 900-1000 ℃ for 3h, naturally cooling for 1.5h, then cooling by water cooling, and sequentially carrying out stretch bending straightening treatment and longitudinal shearing finishing treatment to obtain the refined copper strip.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A method for improving the tensile strength and grain refinement of a brass strip material is characterized by comprising the following steps: the specific refining method comprises the following steps:
s1, pouring the prepared brass material into a pre-prepared smelting furnace, preheating the smelting furnace, drying the surface of the smelting furnace, putting the whole smelting furnace into the smelting furnace for smelting, and filtering impurities;
s2, adding the raw materials into a melting furnace for multiple times according to a specified component formula, carrying out casting to obtain an alloy ingot blank, wherein the casting temperature is 1500-1600 ℃, weighing La element, preparing rare earth element La, and adding a certain amount of La element into the melted brass solution after the preparation is finished;
s3, stirring the brass solution smelted in the smelting furnace, standing for a period of time, and pouring out the solution for casting blank rolling;
s4, taking out the formed rough copper strip, cutting the rough copper strip into a copper strip with a size according with cutting equipment, and then annealing again;
s5, carrying out hot rolling, cooling and forming on the copper strip subjected to the secondary annealing treatment, and sequentially carrying out stretch bending straightening treatment and longitudinal shearing finishing treatment to obtain the fine copper strip.
2. The method of claim 1 for improving the tensile strength and grain refinement of brass strip material, wherein: the material components added in step S1 are: mg0.03-0.04%, Ni0.01-0.03%, Si0.01-0.04%, and Sm0.002-0.006%, and the specific weight components are as follows: mg0.035%, Ni0.02%, Si0.013% and Sm0.004%.
3. The method of claim 1 for improving the tensile strength and grain refinement of brass strip material, wherein: the brass solution is stirred for 0.5h in step S3, and then is allowed to stand for 1h again, and impurities floating on the surface are cleaned.
4. The method of claim 1 for improving the tensile strength and grain refinement of brass strip material, wherein: the annealing temperature in the step S4 is 600-800 ℃, and then cooling is carried out for 2 h.
5. The method of claim 1 for improving the tensile strength and grain refinement of brass strip material, wherein: the hot rolling process parameters in step S5 are specifically: heating at 900-1000 deg.C for 3h, naturally cooling for 1.5h, and cooling with water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010909291.1A CN112048636A (en) | 2020-09-02 | 2020-09-02 | Method for improving tensile strength and grain refinement of brass strip material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010909291.1A CN112048636A (en) | 2020-09-02 | 2020-09-02 | Method for improving tensile strength and grain refinement of brass strip material |
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| CN112048636A true CN112048636A (en) | 2020-12-08 |
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| CN202010909291.1A Pending CN112048636A (en) | 2020-09-02 | 2020-09-02 | Method for improving tensile strength and grain refinement of brass strip material |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139669A (en) * | 2006-09-04 | 2008-03-12 | 中铝上海铜业有限公司 | Copper strip for framework, connector and packaging member and method for manufacturing same |
| CN102676874A (en) * | 2012-06-12 | 2012-09-19 | 洛阳汇工大型轴承制造有限公司 | Material and casting process method for lanthanum-copper bearing retainer |
| EP2592163A1 (en) * | 2010-07-05 | 2013-05-15 | YKK Corporation | Copper-zinc alloy product and process for producing copper-zinc alloy product |
| CN105349826A (en) * | 2015-10-28 | 2016-02-24 | 安徽鑫科新材料股份有限公司 | Brass strip and preparation method thereof |
| CN108531756A (en) * | 2018-04-16 | 2018-09-14 | 东莞市德景五金钮扣有限公司 | A kind of production technology improving brass material tensile strength and crystal grain refinement |
| CN109280802A (en) * | 2018-10-09 | 2019-01-29 | 松阳县景顺实业有限公司 | A kind of high performance high strength copper strips and its production method |
| CN110042271A (en) * | 2019-05-07 | 2019-07-23 | 浙江天河铜业股份有限公司 | A kind of high-strength copper band and its manufacturing method |
| EP3187627B1 (en) * | 2014-08-25 | 2020-08-05 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Conductive material for connection parts which has excellent fretting wear resistance |
-
2020
- 2020-09-02 CN CN202010909291.1A patent/CN112048636A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139669A (en) * | 2006-09-04 | 2008-03-12 | 中铝上海铜业有限公司 | Copper strip for framework, connector and packaging member and method for manufacturing same |
| EP2592163A1 (en) * | 2010-07-05 | 2013-05-15 | YKK Corporation | Copper-zinc alloy product and process for producing copper-zinc alloy product |
| CN102676874A (en) * | 2012-06-12 | 2012-09-19 | 洛阳汇工大型轴承制造有限公司 | Material and casting process method for lanthanum-copper bearing retainer |
| EP3187627B1 (en) * | 2014-08-25 | 2020-08-05 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Conductive material for connection parts which has excellent fretting wear resistance |
| CN105349826A (en) * | 2015-10-28 | 2016-02-24 | 安徽鑫科新材料股份有限公司 | Brass strip and preparation method thereof |
| CN108531756A (en) * | 2018-04-16 | 2018-09-14 | 东莞市德景五金钮扣有限公司 | A kind of production technology improving brass material tensile strength and crystal grain refinement |
| CN109280802A (en) * | 2018-10-09 | 2019-01-29 | 松阳县景顺实业有限公司 | A kind of high performance high strength copper strips and its production method |
| CN110042271A (en) * | 2019-05-07 | 2019-07-23 | 浙江天河铜业股份有限公司 | A kind of high-strength copper band and its manufacturing method |
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Application publication date: 20201208 |
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