CN112111677A - Aluminum plate for microwave oven magnetron and preparation method thereof - Google Patents
Aluminum plate for microwave oven magnetron and preparation method thereof Download PDFInfo
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- CN112111677A CN112111677A CN202011059651.XA CN202011059651A CN112111677A CN 112111677 A CN112111677 A CN 112111677A CN 202011059651 A CN202011059651 A CN 202011059651A CN 112111677 A CN112111677 A CN 112111677A
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- 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
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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
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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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Abstract
The invention discloses an aluminum plate for a microwave oven magnetron and a preparation method thereof. The aluminum plate for the microwave oven magnetron comprises the following components in percentage by weight: 0.08-0.13% of Si, 0.32-0.52% of Fe, 0.08-0.13% of Cu, 0.01-0.02% of Ti, and the balance of Al and unremovable impurities, wherein the ratio of Fe to Si is 4:1, and the ratio of Si to Cu is 1: 1. The preparation method comprises the following steps: smelting, casting and rolling, cold rolling, intermediate heat treatment, finished product rolling, finished product heat treatment and the like. The invention adds the intermediate heat treatment process after the cold rolling process, effectively eliminates the deformation resistance of the aluminum coil in the rolling process, and leads the aluminum coil to have insufficient deformation energy storage when the finished product is subjected to heat treatment after subsequent rolling, thereby controlling the elongation of the finished product aluminum plate to be 5-10 percent and better solving the problems of die sticking caused by too high elongation and cracking caused by too low elongation.
Description
Technical Field
The invention relates to the technical field of metal materials and metal material processing and forming, in particular to an aluminum plate for a microwave oven magnetron and a preparation method thereof.
Background
The existing magnetron materials of high-end microwave ovens all adopt aluminum plates, have the advantages of easy recovery, energy conservation and environmental protection, but also have the defects of harsh processing requirements and the like. At present, the existing aluminum plate is manufactured by the H24 process, the tensile strength is 110-; the aluminum plate is subjected to the H14 process, the tensile strength is 110-130Mpa, the elongation is less than or equal to 4 percent, and the problems of too low elongation and easy cracking due to punch forming exist.
Disclosure of Invention
The invention aims to provide an aluminum plate for a microwave oven magnetron and a preparation method thereof, which aim to solve the problems that the finished product elongation of the aluminum plate for the microwave oven magnetron in the prior art is too high or too low to meet the requirements of customers and the like.
In order to solve the technical problems, the invention adopts the following technical scheme:
an aluminum plate for a microwave oven magnetron comprises the following components in percentage by weight: 0.08-0.13% of Si, 0.32-0.52% of Fe, 0.08-0.13% of Cu, 0.01-0.02% of Ti, and the balance of Al and unremovable impurities, wherein the ratio of Fe to Si is 4:1, and the ratio of Si to Cu is 1: 1.
A preparation method of an aluminum plate for a microwave oven magnetron comprises the following steps:
smelting according to the components and weight percentage, and then casting and rolling;
cold rolling the cast and rolled blank to the thickness of 2.6-2.8mm through 2 passes;
carrying out intermediate heat treatment on the cold-rolled blank;
rolling the blank subjected to intermediate heat treatment into a finished product, and rolling the finished product to a thickness of 0.6-0.8mm by 2 passes;
and carrying out finished product heat treatment on the finished product obtained after rolling the finished product.
Further, the process conditions of the intermediate heat treatment are as follows: heating to 260 ℃ at a speed of 25-30 ℃/h in an annealing furnace, preserving heat for 4-6h, heating to 420-435 ℃ at a speed of 50-60 ℃/h, and preserving heat for 6-8 h.
Further, in the cold rolling step, the reduction rate of each pass is controlled to be 40-43%.
Furthermore, in the finished product rolling step, the first pass working ratio is controlled to be 50-55%, and the second pass working ratio is controlled to be 42-50%.
Further, the process conditions of the heat treatment of the finished product are as follows: the process is carried out in an annealing furnace, nitrogen is introduced for 2-4h, then the temperature is raised to 230 ℃ at the heating rate of 10-15 ℃/h, and the temperature is kept for 1-3 h.
Compared with the prior art, the invention has the advantages and beneficial effects that:
when the aluminum plate for the microwave oven magnetron is prepared, the intermediate heat treatment process is added after the cold rolling process, so that the deformation resistance of the aluminum coil in the rolling process is effectively eliminated, the aluminum coil is insufficient in deformation energy storage when the finished product is subjected to heat treatment after subsequent rolling, the elongation of the finished product aluminum plate is controlled to be 5-10%, and the problems of die sticking caused by too high elongation and cracking caused by too low elongation are well solved; meanwhile, through mechanical property and bending tests, the tensile strength of the finished product of the aluminum plate for the microwave oven magnetron is 115-125MPa, and the bending is 1T, so that the mechanical property requirement of a user on the aluminum plate can be met.
Detailed Description
The invention is further described with reference to specific examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The invention provides an aluminum plate for a microwave oven magnetron, which comprises the following components in percentage by weight: 0.08-0.13% of Si, 0.32-0.52% of Fe, 0.08-0.13% of Cu, 0.01-0.02% of Ti, and the balance of Al and unremovable impurities, wherein the ratio of Fe to Si is 4:1, and the ratio of Si to Cu is 1: 1.
In one embodiment, the method for manufacturing an aluminum plate for a magnetron of a microwave oven includes the steps of:
(1) casting and rolling, namely obtaining a cast-rolled plate with the plate thickness of 7.5-8.2mm by smelting and casting and rolling the raw materials;
(2) cold rolling, namely transferring the cast-rolled plate in the step (1) to a cold rolling workshop for cold rolling, controlling the pass processing rate to be 40-43%, and rolling the plate to be 2.6-2.8mm in thickness in 2 passes;
(3) and (3) intermediate heat treatment, namely transferring the semi-finished product obtained in the step (2) into an annealing furnace, performing intermediate heat treatment, heating to 260 ℃ at a speed of 25-30 ℃/h, preserving heat for 4-6h, heating to 420-435 ℃ at a speed of 50-60 ℃/h, preserving heat for 6-8h, cooling and discharging.
(4) And (4) rolling a finished product, namely transferring the aluminum coil obtained in the step (3) to a finished product rolling mill for rolling, wherein the first pass working rate is controlled to be 50-55%, and the second pass working rate is controlled to be 42-50%, so that an aluminum plate with the finished product thickness of 0.6-0.8mm is obtained.
(5) And (4) performing heat treatment on the finished product, namely putting the finished product 0.6-0.8mm aluminum plate obtained in the step (4) into a nitrogen protection annealing furnace for heat treatment, introducing nitrogen for 2-4h, starting to heat up to 220-230 ℃ at the heating rate of 10-15 ℃/h, preserving heat for 1-3h, and taking out of the furnace for cooling.
The tensile strength of the finished product finally obtained by the method is 115-125MPa, the elongation is 5-10%, and the bending is 1T.
Specific examples are given below.
Example 1
In this embodiment, the aluminum plate for controlling the magnetron of the microwave oven comprises the following components in percentage by weight: si: 0.08%, Fe: 0.32%, Cu: 0.08%, Ti: 0.02%, Al: 99.45 percent; the rest components are non-removable impurities.
The aluminum plate for the microwave oven magnetron is prepared according to the component ratio, and the preparation method comprises the following specific steps:
(1) casting and rolling, namely obtaining a cast-rolled plate with the plate thickness of 7.5mm by smelting and casting and rolling the raw materials;
(2) cold rolling, namely transferring the cast-rolled plate in the step (1) to a cold rolling workshop for cold rolling, and carrying out intermediate heat treatment on the cast-rolled plate which is rolled to 2.6mm according to the rolling proportion of 7.5-4.5-2.6;
(3) and (3) intermediate heat treatment, namely transferring the semi-finished product obtained in the step (2) into an annealing furnace, performing intermediate heat treatment, heating to 260 ℃ at a speed of 25 ℃/h, preserving heat for 4h, heating to 420 ℃ at a speed of 50 ℃/h, preserving heat for 8h, cooling and discharging.
(4) And (4) rolling a finished product, namely transferring the aluminum coil in the step (3) to a finished product rolling mill, and rolling to obtain a finished product of 0.6mm aluminum plate according to the rolling speed of 2.6-1.2-0.6.
(5) And (4) performing heat treatment on a finished product, namely putting the finished product 0.6mm aluminum plate obtained in the step (4) into a nitrogen protection annealing furnace for heat treatment, introducing nitrogen for 2 hours, starting heating, heating to 220 ℃ at a heating rate of 10 ℃/h, preserving heat for 3 hours, discharging and cooling.
Through mechanical property and bending test, the tensile strength of the final product is 125MPa, the elongation is 5 percent, and the bending is 1T.
Example 2
In this embodiment, the aluminum plate for controlling the magnetron of the microwave oven comprises the following components in percentage by weight: si: 0.1%, Fe: 0.4%, Cu: 0.1%, Ti: 0.015%, Al: 99.33 percent; the rest components are non-removable impurities.
The aluminum plate for the microwave oven magnetron is prepared according to the component ratio, and the preparation method comprises the following specific steps:
(1) casting and rolling, namely obtaining a cast-rolled plate with the plate thickness of 7.9mm by smelting and casting and rolling the raw materials;
(2) cold rolling, namely transferring the cast-rolled plate in the step (1) to a cold rolling workshop for cold rolling, and carrying out intermediate heat treatment on the cast-rolled plate which is rolled to 2.7mm according to the rolling speed of 7.9-4.6-2.7;
(3) and (3) intermediate heat treatment, namely transferring the semi-finished product obtained in the step (2) into an annealing furnace, performing intermediate heat treatment, heating to 260 ℃ at a speed of 28 ℃/h, preserving heat for 5h, heating to 428 ℃ at a speed of 55 ℃/h, preserving heat for 7h, cooling and discharging.
(4) And (4) rolling a finished product, namely transferring the aluminum coil in the step (3) to a finished product rolling mill, and rolling to obtain a finished product of 0.7mm aluminum plate according to the rolling speed of 2.7-1.3-0.7.
(5) And (4) performing heat treatment on a finished product, namely putting the finished product 0.7mm aluminum plate obtained in the step (4) into a nitrogen protection annealing furnace for heat treatment, introducing nitrogen for 3 hours, starting heating, heating to 225 ℃ at a heating rate of 13 ℃/h, preserving heat for 2 hours, discharging and cooling.
Through mechanical property and bending test, the tensile strength of the finished product is 120MPa, the elongation is 8 percent, and the bending is 1T.
Example 3
In this embodiment, the aluminum plate for controlling the magnetron of the microwave oven comprises the following components in percentage by weight: si: 0.13%, Fe: 0.52%, Cu: 0.13%, Ti: 0.01%, Al: 99.16 percent; the other components are non-removable impurities;
the aluminum plate for the microwave oven magnetron is prepared according to the component ratio, and the preparation method comprises the following specific steps:
(1) casting and rolling, namely obtaining a cast-rolled plate with the plate thickness of 8.2mm by smelting and casting and rolling the raw materials;
(2) cold rolling, namely transferring the cast-rolled plate in the step (1) to a cold rolling workshop for cold rolling, and carrying out intermediate heat treatment on the cast-rolled plate which is rolled to 2.8mm according to the rolling speed of 8.2-4.8-2.8;
(3) and (3) intermediate heat treatment, namely transferring the semi-finished product obtained in the step (2) into an annealing furnace, performing intermediate heat treatment, heating to 260 ℃ at a speed of 30 ℃/h, preserving heat for 6h, heating to 435 ℃ at a speed of 60 ℃/h, preserving heat for 6h, cooling and discharging.
(4) And (4) rolling a finished product, namely transferring the aluminum coil in the step (3) to a finished product rolling mill, and obtaining a finished product of 0.8mm aluminum plate according to the proportion of 2.8-1.4-0.8.
(5) And (4) performing heat treatment on a finished product, namely putting the finished product 0.8mm aluminum plate obtained in the step (4) into a nitrogen protection annealing furnace for heat treatment, introducing nitrogen for 4 hours, starting heating, heating to 230 ℃ at a heating rate of 15 ℃/h, preserving heat for 1 hour, discharging and cooling.
Through mechanical property and bending test, the tensile strength of the final product is 115MPa, the elongation is 10%, and the bending is 1T.
The present invention has been disclosed in terms of the preferred embodiment, but is not intended to be limited to the embodiment, and all technical solutions obtained by substituting or converting equivalents thereof fall within the scope of the present invention.
Claims (7)
1. An aluminum plate for a microwave oven magnetron is characterized by comprising the following components in percentage by weight: 0.08-0.13% of Si, 0.32-0.52% of Fe, 0.08-0.13% of Cu, 0.01-0.02% of Ti, and the balance of Al and unremovable impurities, wherein the ratio of Fe to Si is 4:1, and the ratio of Si to Cu is 1: 1.
2. The aluminum plate for a microwave oven magnetron as claimed in claim 1, wherein the elongation of the aluminum plate for a microwave oven magnetron is 5 to 10%.
3. The method for preparing an aluminum plate for a microwave oven magnetron of claim 1, comprising the steps of:
smelting according to the components and weight percentages of the claim 1, and casting and rolling after smelting;
cold rolling the cast and rolled blank to the thickness of 2.6-2.8mm through 2 passes;
carrying out intermediate heat treatment on the cold-rolled blank;
rolling the blank subjected to intermediate heat treatment into a finished product, and rolling the finished product to a thickness of 0.6-0.8mm by 2 passes;
and carrying out finished product heat treatment on the finished product obtained after rolling the finished product.
4. The method for manufacturing an aluminum plate for a microwave oven magnetron as claimed in claim 3, wherein the process conditions of the intermediate heat treatment are as follows: heating to 260 ℃ at a speed of 25-30 ℃/h in an annealing furnace, preserving heat for 4-6h, heating to 420-435 ℃ at a speed of 50-60 ℃/h, and preserving heat for 6-8 h.
5. The method for manufacturing an aluminum sheet for a microwave oven magnetron as claimed in claim 3, wherein in the cold rolling step, a reduction ratio is controlled to 40 to 43% per pass.
6. The method for manufacturing an aluminum plate for a microwave oven magnetron as claimed in claim 3, wherein in the finish rolling step, the first pass reduction ratio is controlled to be 50-55% and the second pass reduction ratio is controlled to be 42-50%.
7. The method for preparing an aluminum plate for a microwave oven magnetron as claimed in claim 3, wherein the process conditions of the heat treatment of the finished product are as follows: the process is carried out in an annealing furnace, nitrogen is introduced for 2-4h, then the temperature is raised to 230 ℃ at the heating rate of 10-15 ℃/h, and the temperature is kept for 1-3 h.
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| CN202011059651.XA CN112111677A (en) | 2020-09-30 | 2020-09-30 | Aluminum plate for microwave oven magnetron and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5618358A (en) * | 1995-03-01 | 1997-04-08 | Davisson; Thomas | Aluminum alloy composition and methods of manufacture |
| CN101705459A (en) * | 2009-12-04 | 2010-05-12 | 山东富海实业股份有限公司 | Processing method of 3005 aluminum alloy strip |
| CN103009010A (en) * | 2012-12-27 | 2013-04-03 | 亚洲铝业（中国）有限公司 | 1100-H14 aluminum alloy plate-strip and production method thereof |
| CN103436747A (en) * | 2013-08-07 | 2013-12-11 | 江阴新仁科技有限公司 | High-plasticity aluminum alloy for heat exchange fin plate and processing technology of high-plasticity aluminum alloy |
| CN110863162A (en) * | 2019-12-10 | 2020-03-06 | 山东德利铝业科技有限公司 | Aluminum foil for high-performance 1100 alloy lithium ion battery and preparation method thereof |
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2020
- 2020-09-30 CN CN202011059651.XA patent/CN112111677A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5618358A (en) * | 1995-03-01 | 1997-04-08 | Davisson; Thomas | Aluminum alloy composition and methods of manufacture |
| CN101705459A (en) * | 2009-12-04 | 2010-05-12 | 山东富海实业股份有限公司 | Processing method of 3005 aluminum alloy strip |
| CN103009010A (en) * | 2012-12-27 | 2013-04-03 | 亚洲铝业（中国）有限公司 | 1100-H14 aluminum alloy plate-strip and production method thereof |
| CN103436747A (en) * | 2013-08-07 | 2013-12-11 | 江阴新仁科技有限公司 | High-plasticity aluminum alloy for heat exchange fin plate and processing technology of high-plasticity aluminum alloy |
| CN110863162A (en) * | 2019-12-10 | 2020-03-06 | 山东德利铝业科技有限公司 | Aluminum foil for high-performance 1100 alloy lithium ion battery and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| 康永林: "《轧制工程学》", 30 September 2014 * |
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Application publication date: 20201222 |