CN112063817A - Secondary annealing production processing method for automobile plate - Google Patents
Secondary annealing production processing method for automobile plate Download PDFInfo
- Publication number
- CN112063817A CN112063817A CN202010920516.3A CN202010920516A CN112063817A CN 112063817 A CN112063817 A CN 112063817A CN 202010920516 A CN202010920516 A CN 202010920516A CN 112063817 A CN112063817 A CN 112063817A
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- processing method
- annealing
- secondary annealing
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- automobile plate
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
Abstract
The invention provides a secondary annealing production and processing method for an automobile plate, and mainly relates to the technical field of automobile plate processing. A secondary annealing production processing method for an automobile plate comprises the following steps: the method comprises the steps of casting, hot rolling, primary annealing, cold rolling, secondary annealing, cold rolling, continuous annealing line solution treatment and finished product forming, wherein the primary annealing and the secondary annealing are box-type furnace intermediate annealing. The invention has the beneficial effects that: the invention adopts two times of intermediate annealing, and the intermediate annealing is performed in a box type furnace, so that the plate has more uniform grain structure, more stable performance and better product quality, can further meet the requirements of customers, and brings better economic benefits to manufacturers.
Description
Technical Field
The invention mainly relates to the technical field of automobile plate processing, in particular to a secondary annealing production processing method for an automobile plate.
Background
The domestic automobile plate business is just started, is in the stage of market research and development and small-batch application, has a mature technical scheme abroad, and has high requirements on material performance, edge covering, bending, surface and material formability in the using process of the automobile plate.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a secondary annealing production processing method for an automobile plate.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a secondary annealing production processing method for an automobile plate comprises the following steps: the method comprises the steps of casting, hot rolling, primary annealing, cold rolling, secondary annealing, cold rolling, continuous annealing line solution treatment and finished product forming, wherein the primary annealing and the secondary annealing are box-type furnace intermediate annealing.
Further, the fusion casting comprises the following steps:
step 1: preheating the raw materials in a smelting furnace at the preheating temperature of 400-;
step 2: refining the melted converter in a heat preservation furnace at the refining temperature of 700-760 ℃ for 20-90min and slagging off;
and step 3: casting a large flat ingot, wherein qualified aluminum liquid is cast according to a specified process, the casting temperature is 660 and 720 ℃, and the surface of the cast large flat ingot is milled;
and 4, step 4: homogenizing the large flat ingot at the temperature of 520 ℃ and 600 ℃ for 3-20 h.
Further, during the casting in the step 3, the crystallizer and the dummy bar head are preheated to 200-300 ℃.
Further, the large flat ingot in the step 3 is milled in a four-face milling mode or an eight-face milling mode, wherein the large face milling amount is 10-25mm, and the small face milling amount is 3-15 mm.
Further, the final temperature of the hot rolling is 280-480 ℃, and the thickness of the hot rolled blank is 4-10 mm.
Further, the primary annealing temperature is 300-.
Further, the secondary annealing temperature is 300-490 ℃, and the heat preservation time is 1-10 h.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts two times of intermediate annealing, and the intermediate annealing is performed in a box type furnace, so that the plate has more uniform grain structure, more stable performance and better product quality, can further meet the requirements of customers, and brings better economic benefits to manufacturers.
Detailed Description
The present invention will be further illustrated by reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
The invention relates to a secondary annealing production processing method of an automobile plate, which comprises the following steps: the method comprises the steps of casting, hot rolling, primary annealing, cold rolling, secondary annealing, cold rolling, continuous annealing line solution treatment and finished product forming, wherein the primary annealing and the secondary annealing are box-type furnace intermediate annealing.
Specifically, the fusion casting comprises the following steps:
step 1: adding the raw materials into a smelting furnace for preheating at the temperature of 400-;
step 2: the melted metal liquid is transferred to a holding furnace for refining and slagging off, the refining temperature is 700-760 ℃, and the refining time is 20-90 min;
and step 3: casting a large flat ingot, wherein qualified aluminum liquid is cast according to a specified process, the casting temperature is 660 and 720 ℃, and the surface of the cast large flat ingot is milled;
and 4, step 4: homogenizing the large flat ingot at the temperature of 520 ℃ and 600 ℃ for 3-20 h.
Specifically, during the casting in the step 3, the crystallizer and the dummy bar head are preheated to 200-300 ℃.
Specifically, the large slab ingot in the step 3 is milled in a four-face milling mode or an eight-face milling mode, wherein the large face milling amount is 10-25mm, and the small face milling amount is 3-15 mm.
Specifically, the final hot rolling temperature is 280-480 ℃, and the thickness of the hot rolled blank is 4-10 mm.
Specifically, the primary annealing temperature is 300-490 ℃, the heat preservation time is 1-10h, and the cold rolling intermediate annealing thickness is 2-7 mm.
Specifically, the secondary annealing temperature is 300-490 ℃, and the heat preservation time is 1-10 h.
Example (b):
firstly, feeding the raw materials into a smelting furnace for preheating, feeding the preheated raw materials into a heating furnace for heating, then refining molten metal, casting after refining, naturally cooling to obtain a large flat ingot, milling the surface of the large flat ingot, and then carrying out hot rolling, primary annealing, cold rolling, secondary annealing, cold rolling and continuous annealing line solution treatment on the large flat ingot to obtain a finished product.
The invention adopts two times of intermediate annealing, and the intermediate annealing is performed in a box type furnace, so that the plate has more uniform grain structure, more stable performance and better product quality, can further meet the requirements of customers, and brings better economic benefits to manufacturers.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The secondary annealing production and processing method of the automobile plate is characterized by comprising the following steps of: the method comprises the following steps: the method comprises the steps of casting, hot rolling, primary annealing, cold rolling, secondary annealing, cold rolling, continuous annealing line solution treatment and finished product forming, wherein the primary annealing and the secondary annealing are box-type furnace intermediate annealing.
2. The secondary annealing production and processing method of the automobile plate as claimed in claim 1, wherein the secondary annealing production and processing method comprises the following steps: the fusion casting comprises the following steps:
step 1: preheating the raw materials in a smelting furnace at the preheating temperature of 400-;
step 2: the melted metal liquid is transferred to a holding furnace for refining and slagging off, the refining temperature is 700-760 ℃, and the refining time is 20-90 min;
and step 3: casting a large flat ingot, wherein qualified aluminum liquid is cast according to a specified process, the casting temperature is 660 and 720 ℃, and the surface of the cast large flat ingot is milled;
and 4, step 4: homogenizing the large flat ingot at the temperature of 520 ℃ and 600 ℃ for 3-20 h.
3. The secondary annealing production and processing method of the automobile plate as claimed in claim 2, wherein: and (3) preheating the crystallizer and the dummy bar head to 200-300 ℃ during casting in the step 3.
4. The secondary annealing production and processing method of the automobile plate as claimed in claim 2, wherein: and 3, the large flat ingot surface milling mode in the step 3 is four-surface milling or eight-surface milling, the large surface milling amount is 10-25mm, and the small surface milling amount is 3-15 mm.
5. The secondary annealing production and processing method of the automobile plate as claimed in claim 1, wherein the secondary annealing production and processing method comprises the following steps: the final hot rolling temperature is 280-480 ℃, and the thickness of the hot rolled blank is 4-10 mm.
6. The secondary annealing production and processing method of the automobile plate as claimed in claim 1, wherein the secondary annealing production and processing method comprises the following steps: the primary annealing temperature is 300-.
7. The secondary annealing production and processing method of the automobile plate as claimed in claim 1, wherein the secondary annealing production and processing method comprises the following steps: the secondary annealing temperature is 300-490 ℃, and the heat preservation time is 1-10 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010920516.3A CN112063817A (en) | 2020-09-04 | 2020-09-04 | Secondary annealing production processing method for automobile plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010920516.3A CN112063817A (en) | 2020-09-04 | 2020-09-04 | Secondary annealing production processing method for automobile plate |
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| Publication Number | Publication Date |
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| CN112063817A true CN112063817A (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010920516.3A Pending CN112063817A (en) | 2020-09-04 | 2020-09-04 | Secondary annealing production processing method for automobile plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113061700A (en) * | 2021-02-24 | 2021-07-02 | 山东南山铝业股份有限公司 | High-temperature heat treatment production method of hot-rolled blank for 6-series automobile plate |
| CN113061699A (en) * | 2021-02-24 | 2021-07-02 | 山东南山铝业股份有限公司 | Soaking high-temperature production method for 6-series automobile plate |
| CN113073185A (en) * | 2021-02-24 | 2021-07-06 | 山东南山铝业股份有限公司 | Multi-time heat treatment production method for 6-series automobile plate |
| CN113070361A (en) * | 2021-02-24 | 2021-07-06 | 山东南山铝业股份有限公司 | Hot-rolling special rolling production method for 6-series automobile plate |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885000A (en) * | 2010-06-13 | 2010-11-17 | 东北大学 | Processing method for increasing stamping formability of 6111 aluminium alloy automobile sheet |
| JP2012172192A (en) * | 2011-02-21 | 2012-09-10 | Mitsubishi Alum Co Ltd | Method for producing aluminum alloy sheet for can body having low ear ratio and method for producing aluminum alloy sheet for bottle type beverage can having low ear ratio |
| WO2016002489A1 (en) * | 2014-06-30 | 2016-01-07 | 日本軽金属株式会社 | Aluminum alloy sheet with excellent press formability and shape fixability and process for producing same |
| CN107267816A (en) * | 2016-03-30 | 2017-10-20 | 株式会社神户制钢所 | High formability aluminium alloy plate |
| CN110952052A (en) * | 2020-01-02 | 2020-04-03 | 北京科技大学 | Method for improving anisotropy of aluminum alloy plate for automobile body |
| CN111575548A (en) * | 2020-04-21 | 2020-08-25 | 天津忠旺铝业有限公司 | 6-series aluminum alloy automobile outer plate with excellent comprehensive performance and preparation method thereof |
-
2020
- 2020-09-04 CN CN202010920516.3A patent/CN112063817A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885000A (en) * | 2010-06-13 | 2010-11-17 | 东北大学 | Processing method for increasing stamping formability of 6111 aluminium alloy automobile sheet |
| JP2012172192A (en) * | 2011-02-21 | 2012-09-10 | Mitsubishi Alum Co Ltd | Method for producing aluminum alloy sheet for can body having low ear ratio and method for producing aluminum alloy sheet for bottle type beverage can having low ear ratio |
| WO2016002489A1 (en) * | 2014-06-30 | 2016-01-07 | 日本軽金属株式会社 | Aluminum alloy sheet with excellent press formability and shape fixability and process for producing same |
| CN107267816A (en) * | 2016-03-30 | 2017-10-20 | 株式会社神户制钢所 | High formability aluminium alloy plate |
| CN110952052A (en) * | 2020-01-02 | 2020-04-03 | 北京科技大学 | Method for improving anisotropy of aluminum alloy plate for automobile body |
| CN111575548A (en) * | 2020-04-21 | 2020-08-25 | 天津忠旺铝业有限公司 | 6-series aluminum alloy automobile outer plate with excellent comprehensive performance and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113061700A (en) * | 2021-02-24 | 2021-07-02 | 山东南山铝业股份有限公司 | High-temperature heat treatment production method of hot-rolled blank for 6-series automobile plate |
| CN113061699A (en) * | 2021-02-24 | 2021-07-02 | 山东南山铝业股份有限公司 | Soaking high-temperature production method for 6-series automobile plate |
| CN113073185A (en) * | 2021-02-24 | 2021-07-06 | 山东南山铝业股份有限公司 | Multi-time heat treatment production method for 6-series automobile plate |
| CN113070361A (en) * | 2021-02-24 | 2021-07-06 | 山东南山铝业股份有限公司 | Hot-rolling special rolling production method for 6-series automobile plate |
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Application publication date: 20201211 |
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