CN113981349A - Annealing process of high-grain-size spinning cathode roller titanium cylinder - Google Patents
Annealing process of high-grain-size spinning cathode roller titanium cylinder Download PDFInfo
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- CN113981349A CN113981349A CN202111258193.7A CN202111258193A CN113981349A CN 113981349 A CN113981349 A CN 113981349A CN 202111258193 A CN202111258193 A CN 202111258193A CN 113981349 A CN113981349 A CN 113981349A
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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
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
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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
- C21D11/00—Process control or regulation for heat treatments
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
Abstract
The invention relates to an annealing process of a high-grain-size spinning cathode roller titanium cylinder, which comprises the following steps of: s1, placing the workpiece in a heat treatment furnace for step-type heat preservation treatment; s2, after the heat preservation of the workpiece is finished, lifting the furnace cover of the heat treatment furnace upwards, and cooling the workpiece along with the furnace; and S3, opening the furnace cover, and taking out the workpiece to be air-cooled to room temperature. The process is simple and practical, the deformation internal stress of the titanium and titanium alloy spinning workpiece can be effectively reduced, the integral service performance of the spinning workpiece is improved, the service life is prolonged, and the manufacturing cost is reduced.
Description
Technical Field
The invention belongs to the technical field of metal material processing, and relates to an annealing process of a high-grain-size spinning cathode roller titanium cylinder.
Background
Titanium and titanium alloy are used as new non-ferrous metal materials, have extremely high specific strength and excellent biocompatibility and corrosion resistance, are widely applied to the fields of aerospace, marine ship engineering, biomedicine, chemical engineering and other industries which have strict requirements on material performance, and make great contribution to the development of national defense military industry and national economy. Because of no effects of strengthening, toughening and the like of alloy elements, the pure titanium has lower strength and higher plasticity. The industrial pure titanium as single-phase pure metal material has various use performances closely related to the size of grains in a microstructure, and the microstructure appearance of the pure titanium depends on the processing and forming mode and the heat treatment system of the pure titanium. The spinning technology is an advanced process method for producing rotary hollow parts, which is emerging in recent years, has the advantages of high material utilization rate, flexible process and simple tool, and can be used for processing and molding integral large-size rotary parts. In the spinning process, the wall thickness of the workpiece is obviously reduced, and the deformation is severe. It is necessary to remove the deformed structure by a proper heat treatment process to obtain an annealed material having good service properties.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an annealing process of a high-grain-size spinning cathode roller titanium cylinder. The spinning titanium cylinder is respectively subjected to heat preservation for different durations at low-temperature, medium-temperature and high-temperature stages by a stepped heating method, so that the temperature of the inside and the outside of the titanium cylinder is ensured to be consistent, and uniform annealing recrystallization texture is obtained; after the heat preservation stage is finished, the titanium cylinder is slowly cooled to a low-temperature range, so that the influence on the internal and external tissues of the titanium cylinder caused by too high cooling speed is effectively avoided.
In order to achieve the purpose, the invention adopts the following technical scheme:
an annealing process of a high-grain-size spinning cathode roller titanium cylinder is characterized by comprising the following steps of:
s1, placing the workpiece in a heat treatment furnace for step-type heat preservation treatment;
s2, after the heat preservation of the workpiece is finished, lifting the furnace cover of the heat treatment furnace upwards, and cooling the workpiece along with the furnace;
and S3, opening the furnace cover, and taking out the workpiece to be air-cooled to room temperature.
Further, before the step S1, preprocessing the workpiece specifically includes: cleaning oil stains on the surface of the workpiece, placing the workpiece on a lifting appliance and placing the workpiece in a heat treatment furnace.
Further, the step type heat preservation process in step S1 includes the following specific steps:
s101, heating the workpiece to 220-280 ℃ at a speed of 10 ℃/min, and preserving heat of the workpiece in a furnace according to a heat preservation time length t being 3/4 d;
s102, heating the workpiece to 400-450 ℃ at a speed of 10 ℃/min, and preserving heat of the workpiece in a furnace according to a heat preservation time length t which is 3/4 d;
s103, heating the workpiece to 620-650 ℃ at a speed of 10 ℃/min, and preserving heat of the workpiece in a furnace according to a heat preservation time length t which is 3/2 d;
wherein, t: the heat preservation time (min); d: and (5) determining the heat preservation duration of annealing according to the wall thickness (mm) of the workpiece.
Further, in step S2, the furnace lid of the heat treatment furnace is raised upward by a height of 20 cm.
Further, in the step S2, the temperature of the workpiece is reduced to 200-300 ℃ along with the furnace.
Further, the workpiece is a spinning deformation cylindrical part.
Further, the outer diameter of the spinning deformation cylindrical part is 2700-3500 mm, the wall thickness is 20-35 mm, and the spinning deformation is 50-60%.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts a step type heating process, can be realized on the traditional vacuum heat treatment furnace, effectively avoids local overheating possibly caused by too fast temperature rise or too long heat preservation time in the heating stage of a large-size workpiece, and is suitable for annealing, recrystallization and grain refinement of the large-size pure titanium and titanium alloy spinning workpiece.
2. The invention adopts a graded slow cooling process, thereby not only avoiding the difference of internal and external tissues of the workpiece caused by high-temperature shock cooling, but also effectively relieving the phenomenon of surface crystal grain growth of the workpiece caused by overlong cooling time along with the furnace.
3. The process is simple and practical, can effectively reduce the deformation internal stress of the titanium and titanium alloy spinning workpiece, improves the integral service performance of the titanium and titanium alloy spinning workpiece, prolongs the service life and reduces the manufacturing cost.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a graph of an annealing heat treatment process according to example 1 of the present invention;
FIG. 2 is a metallographic microstructure of example 1 of the present invention;
FIG. 3 is a metallographic microstructure of comparative experiment 1 according to the invention;
FIG. 4 is a metallographic microstructure of a surface layer of a workpiece in comparative experiment 2 of the present invention;
FIG. 5 is a metallographic microstructure of the core of a workpiece according to comparative test 2.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the appended claims.
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and examples.
An annealing process of a high-grain-size spinning cathode roller titanium cylinder, a workpiece is a spinning deformation cylinder, the outer diameter is 2700-3500 mm, the wall thickness is 20-35 mm, the spinning deformation is 50-60%,
firstly, preprocessing a workpiece, cleaning oil stains on the surface of the deformed workpiece, placing the workpiece on a lifting appliance and placing the workpiece in a heat treatment furnace;
step two, placing the workpiece in a heat treatment furnace for step type heat preservation treatment:
the first stage low-temperature heat preservation process: heating a workpiece along with a furnace, heating the workpiece to 220-280 ℃ at a speed of 10 ℃/min, and preserving heat of the workpiece in the furnace according to a heat preservation time length t which is 3/4 d;
the second stage of medium temperature heat preservation process: heating the workpiece to 400-450 ℃ at the speed of 10 ℃/min, and preserving heat of the workpiece in a furnace according to the heat preservation time length t being 3/4 d;
the third-stage high-temperature heat preservation process: heating the workpiece to 620-650 ℃ at the speed of 10 ℃/min, and preserving heat of the workpiece in a furnace according to the heat preservation time length t being 3/2 d;
wherein, t: the heat preservation time (min); d: and (5) determining the heat preservation duration of annealing according to the wall thickness (mm) of the workpiece.
Step three, a cooling process: after the heat preservation is finished, the furnace cover of the heat treatment furnace is lifted upwards by 20cm, and the workpiece is slowly cooled to 200-300 ℃ along with the furnace.
And step four, opening a furnace cover, taking out the workpiece, air-cooling to room temperature, and then carrying out next processing.
The following is described with reference to specific process procedures:
example 1:
an annealing process of a high-grain-size spinning cathode roller titanium cylinder is characterized in that a workpiece is a TA1 pure titanium spinning deformation cylinder part, the outer diameter is 2700mm, the height is 1500mm, the wall thickness is 25mm, and the spinning deformation is 60%.
Firstly, preprocessing a workpiece, cleaning oil stains on the surface of the deformed workpiece, placing the workpiece on a lifting appliance and placing the workpiece in a heat treatment furnace;
step two, placing the workpiece in a heat treatment furnace for step type heat preservation treatment:
the first stage low-temperature heat preservation process: heating the workpiece along with a furnace, heating the workpiece to 240 ℃ at the speed of 10 ℃/min, and preserving heat of the workpiece in the furnace according to the heat preservation time of 18.75 min;
the second stage of medium temperature heat preservation process: heating the workpiece to 420 ℃ at the speed of 10 ℃/min, and preserving heat of the workpiece in a furnace according to the heat preservation time of 18.75 min;
the third-stage high-temperature heat preservation process: heating the workpiece to 630 ℃ at the speed of 10 ℃/min, and preserving heat of the workpiece in a furnace according to the heat preservation time of 37.5 min;
step three, a cooling process: after the heat preservation is finished, the furnace cover of the heat treatment furnace is lifted upwards by 20cm, and the workpiece is slowly cooled to 200 ℃ along with the furnace.
And step four, opening a furnace cover, taking out the workpiece, air-cooling to room temperature, and then carrying out next processing.
The Brinell hardness, grain size residual stress value and grain size grade of the spinning TA1 pure titanium before and after annealing treatment are shown in Table 1, the annealing heat treatment process curve chart is shown in figure 1, and the metallographic microstructure is shown in figure 2.
Table 1: brinell hardness, residual stress value and grain size grade comparison of titanium cylinder
| Status of state | Brinell hardness | Residual stress/MPa | Grain size grade |
| Before annealing | 213 | 138.75 | The grain size of the deformed structure cannot be evaluated |
| After annealing | 105 | 60.52 | 13 stage |
As can be seen from Table 1, the Brinell hardness of the spin-on titanium can coupon after annealing by the process described in example 1 decreased by about 51%, indicating that work hardening of the coupon due to cold deformation was eliminated; the residual stress detected by the annealed sample is reduced by about 56 percent compared with that before annealing, which shows that the deformation residual stress in the material is effectively eliminated by annealing treatment; the grain size of the sample before annealing can not be evaluated in a deformed structure, and the grain size structure of the sample after annealing is 13 grades, which indicates that the residual stress of the sample is released in the annealing process and the recrystallization process occurs.
As can be seen from fig. 1, a staged heating is used throughout the annealing process, which allows the sample to be sufficiently preheated.
As can be seen from FIG. 2, the microstructure of the annealed sample is equiaxed crystal, the crystal grains are fine and uniform, the deformed structure is fully recrystallized, and the residual deformation energy is fully released.
Comparative experiment 1: and carrying out annealing heat treatment on the spinning-deformed large-size pure titanium workpiece.
Placing a TA1 titanium cylinder with the outer diameter of 2700mm, the height of 1500mm, the wall thickness of 25mm and the spinning deformation of 60% into a furnace, heating a workpiece to 630 ℃ along with the furnace at the speed of 10 ℃/min, calculating the heat preservation time length to be 38min according to the t being 3/2d (t: the heat preservation time length, d: the wall thickness of the workpiece), lifting a furnace cover upwards for about 20cm after the heat preservation is finished, slowly cooling the workpiece to about 300 ℃, and taking out the workpiece for air cooling to the room temperature.
The Brinell hardness, grain size residual stress value and grain size grade of the spinning TA1 pure titanium before and after annealing treatment according to the scheme of the comparative experiment 1 are shown in Table 2, and the metallographic microstructure is shown in FIG. 3.
Table 2:
| status of state | Brinell hardness | Residual stress/MPa | Grain size grade |
| Before annealing | 209 | 136.54 | The grain size of the deformed structure cannot be evaluated |
| After annealing | 136 | 80.63 | Most of the grains are 8.0 grade, and the rest are 6.5 grade |
As can be seen from Table 2, since the material is completely the same as the spinning process, the hardness and residual stress values of the spun titanium cylinder before annealing are very close, and the state of the titanium cylinder before annealing can be considered to be consistent; as can be seen from fig. 3, the annealed sample is completely recrystallized, but the heat treatment furnace heats the workpiece through air conduction instead of directly heating the workpiece, so that the non-stepped continuous heating process hardly ensures uniform and consistent temperature at all parts of the workpiece, and the workpiece is overheated in a micro-area or does not reach the temperature standard in the recrystallization annealing stage, and not all the areas are subjected to the recrystallization process in the same temperature environment, so that the grain sizes of all the parts of the workpiece are different.
Comparative experiment 2: and carrying out annealing heat treatment on the spinning-deformed large-size pure titanium workpiece.
Placing a spinning titanium cylinder with the outer diameter of 2700mm, the height of 1500mm and the wall thickness of 25mm in a heat treatment furnace, heating at the heating rate of 10 ℃/min, heating a workpiece to a low-temperature heat preservation area, preserving heat at the temperature of 240 ℃, and calculating the heat preservation time length to be 19 minutes according to the t which is 3/4d (t is the heat preservation time length, d is the thickness of the workpiece); after the heat preservation is finished, the workpiece is continuously heated to a medium-temperature heat preservation area along with the furnace, heat preservation is carried out at 420 ℃, and the heat preservation time length is calculated to be 19 minutes according to the t being 3d/4 (t: the heat preservation time length; d: the thickness of the workpiece); after the heat preservation is finished, the workpiece is continuously heated to 630 ℃ along with the furnace, and the heat preservation time length is calculated to be 38 minutes according to t which is 3/2d (t is the heat preservation time length; d is the thickness of the workpiece). And after the heat preservation stage is finished, directly taking out the workpiece for air cooling to room temperature.
The Brinell hardness, grain size residual stress value and grain size grade of the spun TA1 pure titanium before and after annealing treatment of comparative experiment 2 are shown in Table 3, and the metallographic microstructure is shown in FIGS. 4 and 5.
TABLE 3
| Status of state | Brinell hardness | Residual stress/MPa | Grain size grade |
| Before annealing | 214 | 137.96 | The grain size of the deformed structure cannot be evaluated |
| Annealed top layer | 128 | 73.91 | Stage 8.5 |
| Annealed back core | 142 | 71.56 | 7.5 grade |
As can be seen from table 3, the brinell hardness and residual stress values of the titanium cylinder before annealing are very close to those of the titanium cylinders of example 1 and comparative experiment 1, and the state of the material before annealing can be considered to be consistent; after annealing, the residual stress value of the material is greatly reduced compared with that before annealing, and the microstructure of the annealed material can be subjected to grain size evaluation, which shows that the deformed structure of the material is subjected to an annealing recrystallization process in the annealing process, but the materials of the surface layer and the core part of the workpiece have non-negligible difference in the residual stress value and the grain size, which shows that the material annealed by the process has defects in structural consistency and stress stability. As can be seen from fig. 4 and 5, the grain size of the surface material is not consistent with the grain size of the core material, because the workpiece is directly cooled by air from the high temperature region, the outer surface of the workpiece directly contacts with the cooling air, and the cooling is faster, while the core of the workpiece is cooled slower, and there is a gradient difference between the temperature inside and outside the workpiece, so that after the outer surface of the workpiece has reached the low temperature stable state, the core of the workpiece still slowly performs the recrystallization process in the high temperature region, thereby causing the difference between the grain size inside and outside the material and the residual stress value.
Example 2:
an annealing process of a high-grain-size spinning cathode roller titanium cylinder is characterized in that a workpiece is a TA1 pure titanium spinning deformation cylinder-shaped part, the outer diameter is 3000mm, the height is 1500mm, the wall thickness is 30mm, and the spinning deformation is 56%.
Firstly, preprocessing a workpiece, cleaning oil stains on the surface of the deformed workpiece, placing the workpiece on a lifting appliance and placing the workpiece in a heat treatment furnace;
step two, placing the workpiece in a heat treatment furnace for step type heat preservation treatment:
the first stage low-temperature heat preservation process: heating the workpiece along with a furnace, heating the workpiece to 260 ℃ at the speed of 10 ℃/min, and preserving heat of the workpiece in the furnace according to the heat preservation time of 23 min;
the second stage of medium temperature heat preservation process: heating the workpiece to 440 ℃ at the speed of 10 ℃/min, and preserving heat of the workpiece in a furnace according to the heat preservation time of 25 min;
the third-stage high-temperature heat preservation process: heating the workpiece to 640 ℃ at the speed of 10 ℃/min, and preserving heat of the workpiece in a furnace according to the heat preservation time of 45 min;
step three, a cooling process: after the heat preservation is finished, the furnace cover of the heat treatment furnace is lifted upwards by 20cm, and the workpiece is slowly cooled to 250 ℃ along with the furnace.
And step four, opening a furnace cover, taking out the workpiece, air-cooling to room temperature, and then carrying out next processing.
Example 3:
an annealing process of a high-grain-size spinning cathode roller titanium cylinder is characterized in that a workpiece is a TA1 pure titanium spinning deformation cylinder-shaped piece, the outer diameter is 3500mm, the height is 1500mm, the wall thickness is 35mm, and the spinning deformation is 60%.
Firstly, preprocessing a workpiece, cleaning oil stains on the surface of the deformed workpiece, placing the workpiece on a lifting appliance and placing the workpiece in a heat treatment furnace;
step two, placing the workpiece in a heat treatment furnace for step type heat preservation treatment:
the first stage low-temperature heat preservation process: heating the workpiece along with a furnace, heating the workpiece to 280 ℃ at the speed of 10 ℃/min, and preserving heat of the workpiece in the furnace according to the heat preservation time of 26 min;
the second stage of medium temperature heat preservation process: heating the workpiece to 450 ℃ at the speed of 10 ℃/min, and preserving heat of the workpiece in a furnace according to the heat preservation time of 26 min;
the third-stage high-temperature heat preservation process: heating the workpiece to 650 ℃ at the speed of 10 ℃/min, and preserving heat of the workpiece in a furnace according to the heat preservation time length of 52 min;
step three, a cooling process: after the heat preservation is finished, the furnace cover of the heat treatment furnace is lifted upwards by 20cm, and the workpiece is slowly cooled to 300 ℃ along with the furnace.
And step four, opening a furnace cover, taking out the workpiece, air-cooling to room temperature, and then carrying out next processing.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (7)
1. An annealing process of a high-grain-size spinning cathode roller titanium cylinder is characterized by comprising the following steps of:
s1, placing the workpiece in a heat treatment furnace for step-type heat preservation treatment;
s2, after the heat preservation of the workpiece is finished, lifting the furnace cover of the heat treatment furnace upwards, and cooling the workpiece along with the furnace;
and S3, opening the furnace cover, and taking out the workpiece to be air-cooled to room temperature.
2. The annealing process for spinning the cathode roller titanium cylinder with high grain size according to claim 1, wherein the step of pretreating the workpiece before the step S1 specifically comprises the following steps: cleaning oil stains on the surface of the workpiece, placing the workpiece on a lifting appliance and placing the workpiece in a heat treatment furnace.
3. The annealing process of the high-grain-size spinning cathode roller titanium cylinder as claimed in claim 1, wherein the step-type heat preservation treatment in the step S1 is as follows:
s101, heating the workpiece to 220-280 ℃ at a speed of 10 ℃/min, and preserving heat of the workpiece in a furnace according to a heat preservation time length t being 3/4 d;
s102, heating the workpiece to 400-450 ℃ at a speed of 10 ℃/min, and preserving heat of the workpiece in a furnace according to a heat preservation time length t which is 3/4 d;
s103, heating the workpiece to 620-650 ℃ at a speed of 10 ℃/min, and preserving heat of the workpiece in a furnace according to a heat preservation time length t which is 3/2 d;
wherein, t: the heat preservation time (min); d: and (5) determining the heat preservation duration of annealing according to the wall thickness (mm) of the workpiece.
4. The process of annealing a high-grain-size spinning cathode roller titanium cylinder as claimed in claim 1, wherein the furnace cover of the heat treatment furnace is lifted upwards by 20cm in step S2.
5. The annealing process of the high-grain-size spinning cathode roller titanium cylinder as claimed in claim 1, wherein the temperature of the workpiece is reduced to 200-300 ℃ along with the furnace in the step S2.
6. The annealing process of the high-grain-size spinning cathode roller titanium cylinder as claimed in claim 1, wherein the workpiece is a spinning deformation cylinder.
7. The annealing process of the high-grain-size spinning cathode roller titanium cylinder as claimed in claim 6, wherein the outer diameter of the spinning deformation cylinder is 2700-3500 mm, the wall thickness is 20-35 mm, and the spinning deformation is 50-60%.
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| CN116334515A (en) * | 2023-04-07 | 2023-06-27 | 河南科技大学 | Heat treatment method for spinning titanium material |
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| CN110923435A (en) * | 2019-12-13 | 2020-03-27 | 湖南湘投金天科技集团有限责任公司 | Deformation control method for large-size titanium alloy locking ring |
| CN111910139A (en) * | 2020-08-05 | 2020-11-10 | 昆明理工大学 | Method for preventing annealing adhesion of ultrathin titanium strip coil through texturing process |
| CN112095060A (en) * | 2020-08-27 | 2020-12-18 | 沈阳中钛装备制造有限公司 | Annealing method of titanium product |
| CN112921259A (en) * | 2021-01-28 | 2021-06-08 | 西安泰金工业电化学技术有限公司 | Residual stress eliminating method for titanium part subjected to powerful spinning deformation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116334515A (en) * | 2023-04-07 | 2023-06-27 | 河南科技大学 | Heat treatment method for spinning titanium material |
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