CN110938787A - Air cushion type continuous annealing process - Google Patents
Air cushion type continuous annealing process Download PDFInfo
- Publication number
- CN110938787A CN110938787A CN201911347939.4A CN201911347939A CN110938787A CN 110938787 A CN110938787 A CN 110938787A CN 201911347939 A CN201911347939 A CN 201911347939A CN 110938787 A CN110938787 A CN 110938787A
- Authority
- CN
- China
- Prior art keywords
- annealing
- air cushion
- temperature
- cushion type
- strip
- 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
- 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
-
- 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
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to the technical field of copper strip annealing processing, in particular to an air cushion type continuous annealing process, which comprises the following steps: selecting a red copper strip with the processing rate of 40% and the hardness of EH, and putting the red copper strip into an air cushion type annealing furnace for heating and cooling, wherein the temperature interval is 450-700 ℃; adjusting the annealing speed once every 50 ℃ in the temperature rising and falling process; rolling the copper strip while heating and cooling to finish annealing; the purpose that the annealing performance of the whole coil of the strip tends to the temperature is achieved by adjusting the annealing speed of the strip, so that the problem of waiting time in the temperature rise and drop process is solved; through the processing characteristics of the annealed material, the material with complicated subsequent processing or high processing rate (the high processing rate ensures that the grain structure of the annealed material is completely crushed and tends to be the same) is selected for annealing production, and the performance change of the material caused by the rise and fall of the annealing temperature is eliminated through the processing mode, namely the finished product of the subsequently produced strip is the material in a state of more than hard state and extra hard state.
Description
Technical Field
The invention relates to the technical field of copper strip annealing processing, in particular to an air cushion type continuous annealing process.
Background
Annealing is a heat treatment process for metals, which refers to slowly heating the metal to a certain temperature, holding for a sufficient time, and then cooling at a suitable rate. The purpose is to reduce hardness and improve machinability; the residual stress is reduced, the size is stabilized, and the deformation and crack tendency is reduced; refining grains, adjusting the structure and eliminating the structure defects. Specifically, annealing is a heat treatment process for materials, including metallic materials and non-metallic materials. And the annealing purpose of the new material is different from that of the traditional metal annealing. When the existing air cushion type annealing furnace process meets the condition that the annealing of the strip needs different temperatures, the temperature needs to be increased or decreased for temperature switching, the switching process needs 30-90 minutes and is even higher, and energy and production time are wasted.
Disclosure of Invention
In view of the above, the present invention is directed to provide an air cushion type continuous annealing process, which solves the problem of waiting time in the temperature raising and lowering process.
The air cushion type continuous annealing process of the invention comprises the following steps:
selecting a red copper strip with the processing rate of 40% and the hardness of EH, and putting the red copper strip into an air cushion type annealing furnace for heating and cooling, wherein the temperature interval is 450-700 ℃;
adjusting the annealing speed once every 50 ℃ in the temperature rising and falling process;
and (5) rolling the copper strip while heating and cooling to finish annealing.
Further, nitrogen gas was used at 200m before annealing3Purging at a flow rate of/h; during continuous annealing, nitrogen purging and sealing are started, and the flow rate is 25-35m3/h。
Furthermore, the annealing speed is adjusted every 50 ℃ in the temperature rising and reducing process to be related to the thickness of the copper strip, and the adjusting range of the annealing speed is 0-10 m/min.
Further, positive pressure is maintained in the air cushion type annealing furnace during annealing.
The invention has the beneficial effects that: the air cushion type continuous annealing process achieves the purpose that the whole roll annealing performance of the strip tends to the temperature by adjusting the annealing speed of the strip, thereby solving the problem of waiting time in the temperature rising and falling process; through the processing characteristics of the annealed material, the material with complicated subsequent processing or high processing rate (the high processing rate ensures that the grain structure of the annealed material is completely crushed and tends to be the same) is selected for annealing production, and the performance change of the material caused by the rise and fall of the annealing temperature is eliminated through the processing mode, namely the finished product of the subsequently produced strip is the material in a state of more than hard state and extra hard state.
Detailed Description
The air cushion type continuous annealing process of the embodiment comprises the following steps:
selecting a red copper strip with the processing rate of 40% and the hardness of EH, and putting the red copper strip into an air cushion type annealing furnace for heating and cooling, wherein the temperature interval is 450-700 ℃;
adjusting the annealing speed once every 50 ℃ in the temperature rising and falling process;
and (5) rolling the copper strip while heating and cooling to finish annealing.
According to the air cushion type continuous annealing process, the purpose that the annealing performance of the whole coil of the strip material tends to the temperature is achieved by adjusting the annealing speed of the strip material to be 0-10m/min when the red copper strip material is cooled, so that the problem of waiting time in the temperature rising and cooling process is solved; through the processing characteristics of the annealed material, the material with complicated subsequent processing or high processing rate (the high processing rate enables the grain structure of the annealed material to be completely crushed and tend to be the same) is selected for annealing production, the material performance change caused by the rise and fall of the annealing temperature is eliminated in a processing mode, namely, the finished product of the subsequently produced strip is the material in a state of more than hard state and extra hard state, and due to the rise and fall of the temperature in the annealing process, the performances of part areas of the strip, particularly the head (the strip corresponding to the initial temperature) and the tail (the final temperature position) of the strip are different, and the sizes of microscopic grain sizes are also different; after 40% large deformation processing, the grain size and the performance are basically consistent.
In the preferred embodiment, nitrogen gas is used at 200m before annealing3Purging at a flow rate of/h; during continuous annealing, nitrogen purging and sealing are started, and the flow rate is 25-35m3H, thereby preventing the copper strip from being oxidized.
Preferably, in this embodiment, the annealing speed is adjusted every 50 ℃ in the cooling process, which is related to the thickness of the copper strip, and the adjustment range of the annealing speed is 0-10 m/min.
Specific adjustment examples are as follows:
taking a 0.6mm red copper strip as an example,
annealing red copper with the thickness of 0.6mm at the temperature of 600 ℃ at the speed of 56 m/min;
the annealing temperature of a certain material is 550 ℃, and the annealing temperature of the copper with the thickness of 0.6mm is 600 ℃.
The adjustment is as follows: the temperature starts to rise at 550 ℃, and the initial speed is 49 m/min; the temperature reaches 575 ℃, and the initial speed is 52 m/min; the temperature reached 600 ℃ and the speed was set at 56 m/min.
The 0.6mm certain frame normal annealing process is carried out at 580 ℃ and 31 m/min.
When the temperature is reduced from 650 ℃ to 580 ℃, the annealing and the temperature reduction are started at 650 ℃, the initial speed is set to be 38m/min, the speed is reduced to 34m/min when the temperature is reduced to 625 ℃, the speed is reduced to 32m/min when the temperature is reduced to 600 ℃, and the speed is reduced to 31m/min when the temperature is reduced to 580 ℃.
In the preferred embodiment, the pressure inside the air cushion annealing furnace is kept positive during annealing to prevent air from entering.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (4)
1. The air cushion type continuous annealing process is characterized in that: the method comprises the following steps:
selecting a red copper strip with the processing rate of 40% and the hardness of EH, and putting the red copper strip into an air cushion type annealing furnace for heating and cooling, wherein the temperature interval is 450-700 ℃;
adjusting the annealing speed once every 50 ℃ in the temperature rising and falling process;
and (5) rolling the copper strip while heating and cooling to finish annealing.
2. The air cushion type continuous annealing process according to claim 1, wherein: nitrogen gas was used at 200m before annealing3Purging at a flow rate of/h; during continuous annealing, nitrogen purging and sealing are started, and the flow rate is 25-35m3/h。
3. The air cushion type continuous annealing process according to claim 1, wherein: the annealing speed is adjusted every 50 ℃ in the temperature rising and falling process and is related to the thickness of the copper strip, and the adjusting range of the annealing speed is 0-10 m/min.
4. The air cushion type continuous annealing process according to claim 1, wherein: during annealing, positive pressure is kept in the air cushion type annealing furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911347939.4A CN110938787A (en) | 2019-12-24 | 2019-12-24 | Air cushion type continuous annealing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911347939.4A CN110938787A (en) | 2019-12-24 | 2019-12-24 | Air cushion type continuous annealing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110938787A true CN110938787A (en) | 2020-03-31 |
Family
ID=69913047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911347939.4A Pending CN110938787A (en) | 2019-12-24 | 2019-12-24 | Air cushion type continuous annealing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110938787A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3779734A (en) * | 1968-04-13 | 1973-12-18 | Sticlarie Turda Fab De | Method of making copper-colored ruby glass |
| CN104057260A (en) * | 2014-06-30 | 2014-09-24 | 中色奥博特铜铝业有限公司 | Processing method of rolled copper foil mother material |
| CN104233136A (en) * | 2014-09-18 | 2014-12-24 | 中色奥博特铜铝业有限公司 | Production process for obtaining copper alloy strip with uniform and small grains |
| CN109261739A (en) * | 2018-08-23 | 2019-01-25 | 中铝洛阳铜加工有限公司 | A kind of short route production wide cut is greater than 630mm transformer copper strip technique |
| CN109261740A (en) * | 2018-08-23 | 2019-01-25 | 中铝洛阳铜加工有限公司 | A kind of short route production copper door band technique |
| CN110343900A (en) * | 2019-08-05 | 2019-10-18 | 中色奥博特铜铝业有限公司 | A kind of preparation method being flexible coupling with copper belt |
-
2019
- 2019-12-24 CN CN201911347939.4A patent/CN110938787A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3779734A (en) * | 1968-04-13 | 1973-12-18 | Sticlarie Turda Fab De | Method of making copper-colored ruby glass |
| CN104057260A (en) * | 2014-06-30 | 2014-09-24 | 中色奥博特铜铝业有限公司 | Processing method of rolled copper foil mother material |
| CN104233136A (en) * | 2014-09-18 | 2014-12-24 | 中色奥博特铜铝业有限公司 | Production process for obtaining copper alloy strip with uniform and small grains |
| CN109261739A (en) * | 2018-08-23 | 2019-01-25 | 中铝洛阳铜加工有限公司 | A kind of short route production wide cut is greater than 630mm transformer copper strip technique |
| CN109261740A (en) * | 2018-08-23 | 2019-01-25 | 中铝洛阳铜加工有限公司 | A kind of short route production copper door band technique |
| CN110343900A (en) * | 2019-08-05 | 2019-10-18 | 中色奥博特铜铝业有限公司 | A kind of preparation method being flexible coupling with copper belt |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106868436B (en) | Manufacturing method for producing high-temperature alloy GH4169 fine-grained bar through rapid-diameter forging combination | |
| CN104532057A (en) | Ti6242 titanium alloy and preparation method of small-size bar thereof | |
| CN108356189B (en) | Cogging forging method of 2507 super duplex stainless steel casting blank | |
| CN114161028B (en) | Processing method for improving performance of titanium alloy welding wire | |
| CN111088481A (en) | Nickel target blank and method for manufacturing target material | |
| CN111495970A (en) | Rolling method for reducing surface cracking of TC4 titanium alloy smelted in EB (electron beam) furnace | |
| CN112589022A (en) | Method for manufacturing high-quality low-segregation fine-grain high-temperature alloy bar difficult to deform | |
| CN115852119A (en) | H13 ingot casting forging hot-work die steel and production method thereof | |
| CN114058906B (en) | Large-size Ni-Cr electrothermal alloy blank and hot working method | |
| CN114350903A (en) | Quenching cooling method of 5CrNiMoV module | |
| CN110819781B (en) | High-speed steel wire circulation heat treatment method | |
| CN111136120B (en) | Processing method of large-single-weight titanium and titanium alloy wire | |
| CN110938787A (en) | Air cushion type continuous annealing process | |
| CN114657415B (en) | 750 ℃ high-temperature titanium alloy bar and forging method thereof | |
| CN111451276A (en) | Preparation method of high-purity Gd/Tb/Dy/Y rare earth metal foil | |
| CN114350969B (en) | Manufacturing method of stainless steel bar for liquid hydrogen storage device | |
| CN107761062B (en) | Method for manufacturing target blank and target assembly | |
| CN112048688A (en) | Strong-plasticity magnesium alloy and preparation method thereof | |
| CN108746448B (en) | Cogging forging method for high-purity titanium ingot for semiconductor sputtering target material | |
| TWI557244B (en) | Method of fabricating corrosion-resistant high nickel alloy | |
| CN111910139A (en) | Method for preventing annealing adhesion of ultrathin titanium strip coil through texturing process | |
| CN111455294A (en) | High-purity Ho/Er/Tm rare earth metal foil and preparation method thereof | |
| CN109023185A (en) | A kind of GH80A high temperature alloy part surface layer grain thinning method | |
| CN114182082B (en) | Production method of 0.05mm ultrathin copper strip | |
| CN109252027A (en) | The processing method of the low weather-proof bending angle steel of residual stress |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No.1 Tongxin Road, Xialu District, Huangshi City, Hubei Province Applicant after: China copper Huazhong Copper Co., Ltd Address before: No.1 Tongxin Road, Xialu District, Huangshi City, Hubei Province Applicant before: CHINALCO CENTRAL CHINA COPPER Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200331 |