CN112620346A - Production method of wide-width precise cold-rolled titanium material - Google Patents
Production method of wide-width precise cold-rolled titanium material Download PDFInfo
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- CN112620346A CN112620346A CN202011272586.9A CN202011272586A CN112620346A CN 112620346 A CN112620346 A CN 112620346A CN 202011272586 A CN202011272586 A CN 202011272586A CN 112620346 A CN112620346 A CN 112620346A
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 126
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 126
- 239000010936 titanium Substances 0.000 title claims abstract description 126
- 239000000463 material Substances 0.000 title claims abstract description 91
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 238000005096 rolling process Methods 0.000 claims abstract description 43
- 238000004140 cleaning Methods 0.000 claims abstract description 26
- 230000003746 surface roughness Effects 0.000 claims abstract description 19
- 238000000137 annealing Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000009467 reduction Effects 0.000 claims abstract description 7
- 238000005238 degreasing Methods 0.000 claims description 20
- 239000010731 rolling oil Substances 0.000 claims description 15
- 238000005097 cold rolling Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005422 blasting Methods 0.000 abstract description 2
- 230000000704 physical effect Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/005—Rolls with a roughened or textured surface; Methods for making same
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
Abstract
The invention discloses a production method of a wide-width precise cold-rolled titanium material, which comprises the following five procedures of manufacturing a titanium material precise control working roll, rolling, cleaning, vacuum annealing and straightening and withdrawal, so as to obtain a titanium material with the thickness of 0.1-0.2mm and +/-0.003 mm; surface roughness Ra is 0.1-0.3, +/-0.02 μm; hardness is HV 160-; tensile strength: sigma b is more than or equal to 300Mpa and +/-8 Mpa; unevenness: wide-width precision cold-rolled titanium material less than or equal to 0.5mm/1 m. The titanium strip fine control working roll is adopted in the last pass in the rolling process, the wear resistance of the roll is improved after laser shot blasting, the friction and contact conditions between the roll and the plate are improved so as to be beneficial to smooth rolling process (the rolling reduction and the rolling speed of a rolling mill can be increased), scratches and adhesion are reduced, the plate shape is improved, and the plate surface quality is improved. Meanwhile, the uniformity of the surface roughness of the precision cold-rolled titanium material is improved, and the stability of physical properties such as hardness, tensile strength and the like is improved.
Description
Technical Field
The invention belongs to the technical field of cold-rolled titanium material processing, and particularly relates to a production method of a wide-width precise cold-rolled titanium material.
Background
The precision cold-rolled titanium material has high strength, low density and excellent fatigue resistance and corrosion resistance. But simultaneously has the characteristics of low elastic modulus, high plastic deformation resistance, high yield ratio and the like, and the process difficulty of cold rolling, annealing, pulling and straightening and the like of the titanium strip is increased by the characteristics of pure titanium. Pure titanium also has the characteristics of low thermal conductivity, poor heat dissipation and the like, and the phenomena of surface color difference, uneven roughness, uneven performance and the like are easily generated by cold rolling and annealing if the traditional process is adopted. In addition, pure titanium is soft, and phenomena of large plate unevenness, large longitudinal and transverse difference of tensile strength and the like are easily generated in pulling and straightening, so that innovation must be carried out on the production process of the precise cold-rolled titanium material. With the development of high and new technology industry to light weight, the demand of precise (0.2mm and below) titanium materials on the market is increasing. Due to the limitation of equipment and technology in China, narrow-width precise titanium belts can be produced only in small batches at present, and the production efficiency is lower and higher than the cost.
Therefore, a method for producing a wide-width precision cold-rolled titanium material is proposed to solve the above problems.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provide a production method of a wide-width precise cold-rolled titanium material. Specifically, the thickness is 0.1-0.2mm, ± 0.003 mm; surface roughness Ra is 0.1-0.3, +/-0.02 μm; hardness is HV 160-; tensile strength: sigma b is more than or equal to 300Mpa and +/-8 Mpa; unevenness: wide-width precision cold-rolled titanium material less than or equal to 0.5mm/1 m.
The invention provides a specific technical scheme as follows:
the production method of the wide cold-rolled precise pure titanium strip sequentially comprises the following steps:
step one, manufacturing a titanium material precision control working roll: firstly, a working roll of a rolling mill is initially processed until the surface roughness Ra is 0.1-0.2 mu m, and then a titanium material precision control working roll with the roughness Ra0.2-0.6 mu m and the surface hardness HV600-800 is manufactured by laser texturing equipment;
step two, rolling: adopting a twenty-roller precision cold rolling unit, performing 5-10 passes on the cold-rolled titanium material with the width of 1250mm and the thickness of 0.3-0.5mm, adopting the titanium material precision control working roller obtained in the step one in the last pass, controlling the total reduction rate within 70 percent, and rolling the cold-rolled titanium material into the cold-rolled precision titanium material with the thickness of 0.1-0.2mm and the surface roughness Ra of 0.1-0.3 mu m;
step three, degreasing and cleaning: cleaning the cold-rolled precise titanium material obtained in the step two by using a continuous degreasing cleaning machine set to remove rolling oil stains on the surface of the titanium material;
step four, solution treatment: placing the precision cold-rolled strip obtained in the third step into a vacuum annealing furnace, heating and preserving heat for a period of time when the vacuum degree in the furnace meets the process requirement, and then cooling along with the furnace to obtain a semi-finished precision cold-rolled titanium material;
step five, withdrawal and straightening: using a withdrawal and straightening machine to withdraw and straighten the semi-finished precision cold-rolled titanium strip obtained in the fourth step to obtain a strip with the thickness of 0.1-0.2mm +/-0.003 mm; surface roughness Ra is 0.1-0.3, +/-0.02 μm; hardness is HV 160-; tensile strength: sigma b is more than or equal to 300Mpa and +/-8 Mpa; unevenness: wide-width precision cold-rolled titanium material less than or equal to 0.5mm/1 m.
As a further improvement of the invention, in the step one, the laser scanning speed of the laser texturing device is 1.0-1.5m/s, the pulse width is 60-100 μm, the pulse peak value is 100-.
As a further improvement of the invention, in the step two, the rolling force of the twenty-roller precision cold rolling unit is 3000KN for 2000-120 KN, the rolling tension is 40-120KN, the rolling speed is 250m/min for 150-250m/min, the rolling oil spraying speed is 200L/min, the rolling oil temperature is 35-40 ℃, and the single-pass deformation is 5-20%.
As a further improvement of the invention, the speed of the precision cold-rolled titanium material obtained in the second step in the third step passing through the degreasing cleaning unit is 120-150m/min, and the temperature of the water tank of the degreasing cleaning unit is 60-80 ℃.
As a further improvement of the invention, the precise cold-rolled titanium material obtained in the third step in the fourth step is placed into the vacuum annealing furnace, when the vacuum degree in the furnace reaches 1.0 multiplied by 10 < -2 > Pa, the pure titanium strip is heated to 660-700 ℃ along with the furnace at the heating rate of 140 plus materials and 180 ℃/h, the temperature is kept for 40-60 minutes, then the pure titanium strip is cooled along with the furnace, and when the temperature of the pure titanium strip is reduced to 120 ℃, the vacuum unit is closed; when the temperature of the pure titanium strip is reduced to below 50 ℃, discharging the pure titanium strip.
As a further improvement of the invention, the tension of the withdrawal and straightening machine in the step five is 40-80KN, the elongation is 0.2-0.6%, and the feeding speed of the precision cold-rolled titanium material obtained in the step four is 150-200 m/min.
Compared with the prior art, the invention has the following beneficial effects:
1. in the production method, the titanium strip fine control working roll is adopted in the last pass in the rolling process of the step two, the wear resistance of the roll is improved after laser shot blasting, and the service life of the roll is prolonged. The titanium material has the characteristics of low elastic modulus, low elongation, high plastic deformation resistance, poor heat conduction and the like, and a titanium belt precision control working roll is adopted in the rolling process to improve the friction (increasing the friction force) and the contact condition between the roll and the plate so as to be beneficial to smooth rolling process (increasing the rolling reduction and the rolling speed of a rolling mill), reduce scratches and adhesion, improve the plate shape and improve the plate surface quality.
2. In the production method, the titanium belt fine control working roll is adopted in the last pass in the rolling process of the step two, so that the surface roughness uniformity, the hardness, the tensile strength and other physical properties of the precision cold-rolled titanium material are obviously improved, and the tensile strength is less than or equal to +/-8 Mpa in the longitudinal direction and the transverse direction. The drawing and straightening adopts a constant elongation rate mode to improve the plate shape of the precise cold-rolled titanium material. The precision cold-rolled titanium material produced by the method has mechanical properties such as hardness, strength, plasticity and the like which completely meet the national standard, and has good plate shape and surface quality. The invention also has the advantages of simple process, easy operation and the like.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
the production method of the wide cold-rolled precise pure titanium strip sequentially comprises the following steps:
step one, manufacturing a titanium material precision control working roll: firstly, a working roll of a rolling mill is initially processed until the surface roughness Ra is 0.1-0.2 mu m, and then a titanium material precision control working roll with the roughness Ra0.2-0.6 mu m and the surface hardness HV600-800 is manufactured by laser texturing equipment;
step two, rolling: adopting a twenty-roller precision cold rolling unit, performing 5-10 passes on a cold-rolled titanium material with the width of 1250mm and the thickness of 0.3mm, adopting the titanium material precision control working roller obtained in the step one in the last pass, controlling the total reduction rate within 70%, and rolling the cold-rolled titanium material into a cold-rolled precision titanium material with the thickness of 0.1-0.13mm and the surface roughness Ra of 0.1-0.3 mu m;
step three, degreasing and cleaning: cleaning the cold-rolled precise titanium material obtained in the step two by using a continuous degreasing cleaning machine set to remove rolling oil stains on the surface of the titanium material;
step four, solution treatment: placing the precision cold-rolled strip obtained in the third step into a vacuum annealing furnace, heating and preserving heat for a period of time when the vacuum degree in the furnace meets the process requirement, and then cooling along with the furnace to obtain a semi-finished precision cold-rolled titanium material;
step five, withdrawal and straightening: using a withdrawal and straightening machine to withdraw and straighten the semi-finished precision cold-rolled titanium strip obtained in the fourth step to obtain a strip with the thickness of 0.1-0.13mm +/-0.003 mm; surface roughness Ra is 0.1-0.3, +/-0.02 μm; hardness is HV 160-; tensile strength: sigma b is more than or equal to 300Mpa and +/-8 Mpa; unevenness: wide-width precision cold-rolled titanium material less than or equal to 0.5mm/1 m.
In this embodiment, the laser scanning speed of the laser texturing device in the first step is 1.0-1.5m/s, the pulse width is 60-100 μm, the pulse peak value is 100-.
In the embodiment, the rolling force of the twenty-roller precision cold rolling unit in the step two is 2000-2300KN, the rolling tension is 40-60KN, the rolling speed is 150-180m/min, the rolling oil spraying speed is 200L/min, the rolling oil temperature is 35-40 ℃, and the single-pass deformation is 5-10%.
As a further improvement of the invention, the speed of the precision cold-rolled titanium material obtained in the second step in the third step passing through the degreasing cleaning unit is 120-130m/min, and the temperature of the water tank of the degreasing cleaning unit is 60-80 ℃.
In this embodiment, the precise cold-rolled titanium material obtained in the third step of the fourth step is placed into the vacuum annealing furnace, when the vacuum degree in the furnace reaches 1.0 × 10-2Pa, the temperature of the pure titanium strip is raised to 660-700 ℃ along with the furnace at a temperature-raising speed of 140-; when the temperature of the pure titanium strip is reduced to below 50 ℃, discharging the pure titanium strip.
In this embodiment, the tension of the withdrawal and straightening unit in the fifth step is 40-50KN, the elongation is 0.2-0.3%, and the feeding speed of the precise cold-rolled titanium material obtained in the fourth step is 150-165 m/min.
Example 2:
the production method of the wide cold-rolled precise pure titanium strip sequentially comprises the following steps:
step one, manufacturing a titanium material precision control working roll: firstly, a working roll of a rolling mill is initially processed until the surface roughness Ra is 0.1-0.2 mu m, and then a titanium material precision control working roll with the roughness Ra0.2-0.6 mu m and the surface hardness HV600-800 is manufactured by laser texturing equipment;
step two, rolling: adopting a twenty-roller precision cold rolling unit, performing 5-10 passes on a cold-rolled titanium material with the width of 1250mm and the thickness of 0.4mm, adopting the titanium material precision control working roller obtained in the step one in the last pass, controlling the total reduction rate within 70%, and rolling the cold-rolled titanium material into a cold-rolled precision titanium material with the thickness of 0.14-0.16mm and the surface roughness Ra of 0.1-0.3 mu m;
step three, degreasing and cleaning: cleaning the cold-rolled precise titanium material obtained in the step two by using a continuous degreasing cleaning machine set to remove rolling oil stains on the surface of the titanium material;
step four, solution treatment: placing the precision cold-rolled strip obtained in the third step into a vacuum annealing furnace, heating and preserving heat for a period of time when the vacuum degree in the furnace meets the process requirement, and then cooling along with the furnace to obtain a semi-finished precision cold-rolled titanium material;
step five, withdrawal and straightening: using a withdrawal and straightening machine to withdraw and straighten the semi-finished precision cold-rolled titanium strip obtained in the fourth step to obtain a strip with the thickness of 0.14-0.16mm +/-0.003 mm; surface roughness Ra is 0.1-0.3, +/-0.02 μm; hardness is HV 160-; tensile strength: sigma b is more than or equal to 300Mpa and +/-8 Mpa; unevenness: wide-width precision cold-rolled titanium material less than or equal to 0.5mm/1 m.
In this embodiment, the laser scanning speed of the laser texturing device in the first step is 1.0-1.5m/s, the pulse width is 60-100 μm, the pulse peak value is 100-.
In the embodiment, the rolling force of the twenty-roller precision cold rolling unit in the second step is 2300-2600KN, the rolling tension is 60-90KN, the rolling speed is 180-210m/min, the rolling oil spraying speed is 200L/min, the rolling oil temperature is 35-40 ℃, and the single-pass deformation is 5-15%.
As a further improvement of the invention, the speed of the precision cold-rolled titanium material obtained in the second step in the third step passing through the degreasing cleaning unit is 130-140m/min, and the temperature of the water tank of the degreasing cleaning unit is 60-80 ℃.
In this embodiment, the precise cold-rolled titanium material obtained in the third step of the fourth step is placed into the vacuum annealing furnace, when the vacuum degree in the furnace reaches 1.0 × 10-2Pa, the temperature of the pure titanium strip is raised to 660-700 ℃ along with the furnace at a temperature-raising speed of 140-; when the temperature of the pure titanium strip is reduced to below 50 ℃, discharging the pure titanium strip.
In this embodiment, the tension of the withdrawal and straightening unit in the fifth step is 50-65KN, the elongation is 0.3-0.45%, and the feeding speed of the precise cold-rolled titanium material obtained in the fourth step is 165-180 m/min.
Example 3:
the production method of the wide cold-rolled precise pure titanium strip sequentially comprises the following steps:
step one, manufacturing a titanium material precision control working roll: firstly, a working roll of a rolling mill is initially processed until the surface roughness Ra is 0.1-0.2 mu m, and then a titanium material precision control working roll with the roughness Ra0.2-0.6 mu m and the surface hardness HV600-800 is manufactured by laser texturing equipment;
step two, rolling: adopting a twenty-roller precision cold rolling unit, performing 5-10 passes on a cold-rolled titanium material with the width of 1250mm and the thickness of 0.5mm, adopting the titanium material precision control working roller obtained in the step one in the last pass, controlling the total reduction rate within 70%, and rolling the cold-rolled titanium material into a cold-rolled precision titanium material with the thickness of 0.17-0.2mm and the surface roughness Ra of 0.1-0.3 mu m;
step three, degreasing and cleaning: cleaning the cold-rolled precise titanium material obtained in the step two by using a continuous degreasing cleaning machine set to remove rolling oil stains on the surface of the titanium material;
step four, solution treatment: placing the precision cold-rolled strip obtained in the third step into a vacuum annealing furnace, heating and preserving heat for a period of time when the vacuum degree in the furnace meets the process requirement, and then cooling along with the furnace to obtain a semi-finished precision cold-rolled titanium material;
step five, withdrawal and straightening: using a withdrawal and straightening machine to withdraw and straighten the semi-finished precision cold-rolled titanium strip obtained in the fourth step to obtain a strip with the thickness of 0.17-0.2mm +/-0.003 mm; surface roughness Ra is 0.1-0.3, +/-0.02 μm; hardness is HV 160-; tensile strength: sigma b is more than or equal to 300Mpa and +/-8 Mpa; unevenness: wide-width precision cold-rolled titanium material less than or equal to 0.5mm/1 m.
In this embodiment, the laser scanning speed of the laser texturing device in the first step is 1.0-1.5m/s, the pulse width is 60-100 μm, the pulse peak value is 100-.
In the embodiment, the rolling force of the twenty-roller precision cold rolling unit in the step two is 2600-3000KN, the rolling tension is 90-120KN, the rolling speed is 210-250m/min, the rolling oil spraying speed is 200L/min, the rolling oil temperature is 35-40 ℃, and the single-pass deformation is 5-20%.
As a further improvement of the invention, the speed of the precision cold-rolled titanium material obtained in the second step in the third step passing through the degreasing cleaning unit is 140-150m/min, and the temperature of the water tank of the degreasing cleaning unit is 60-80 ℃.
In this embodiment, the precise cold-rolled titanium material obtained in the third step of the fourth step is placed into the vacuum annealing furnace, when the vacuum degree in the furnace reaches 1.0 × 10-2Pa, the temperature of the pure titanium strip is raised to 660-700 ℃ along with the furnace at a temperature-raising speed of 140-; when the temperature of the pure titanium strip is reduced to below 50 ℃, discharging the pure titanium strip.
In this embodiment, the tension of the withdrawal and straightening unit in the fifth step is 65-80KN, the elongation is 0.45-0.6%, and the feeding speed of the precise cold-rolled titanium material obtained in the fourth step is 180-200 m/min.
While there have been shown and described what are at present considered the fundamental principles of the invention, the essential features and advantages thereof, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (6)
1. A production method of wide-width precise cold-rolled titanium material is characterized by comprising the following steps: the method comprises the following steps:
step one, manufacturing a titanium material precision control working roll: firstly, a working roll of a rolling mill is initially processed until the surface roughness Ra is 0.1-0.2 mu m, and then a titanium material precision control working roll with the roughness Ra0.2-0.6 mu m and the surface hardness HV600-800 is manufactured by laser texturing equipment;
step two, rolling: adopting a twenty-roller precision cold rolling unit, performing 5-10 passes on the cold-rolled titanium material with the width of 1250mm and the thickness of 0.3-0.5mm, adopting the titanium material precision control working roller obtained in the step one in the last pass, controlling the total reduction rate within 70 percent, and rolling the cold-rolled titanium material into the cold-rolled precision titanium material with the thickness of 0.1-0.2mm and the surface roughness Ra of 0.1-0.3 mu m;
step three, degreasing and cleaning: cleaning the cold-rolled precise titanium material obtained in the step two by using a continuous degreasing cleaning machine set to remove rolling oil stains on the surface of the titanium material;
step four, solution treatment: placing the precision cold-rolled strip obtained in the third step into a vacuum annealing furnace, heating and preserving heat for a period of time when the vacuum degree in the furnace meets the process requirement, and then cooling along with the furnace to obtain a semi-finished precision cold-rolled titanium material;
step five, withdrawal and straightening: using a withdrawal and straightening machine to withdraw and straighten the semi-finished precision cold-rolled titanium strip obtained in the fourth step to obtain a strip with the thickness of 0.1-0.2mm +/-0.003 mm; surface roughness Ra is 0.1-0.3, +/-0.02 μm; hardness is HV 160-; tensile strength: sigma b is more than or equal to 300Mpa and +/-8 Mpa; unevenness: wide-width precision cold-rolled titanium material less than or equal to 0.5mm/1 m.
2. The production method of the wide precision cold-rolled titanium material according to claim 1, characterized in that: in the first step, the laser scanning speed of the laser texturing device is 1.0-1.5m/s, the pulse width is 60-100 μm, the pulse peak value is 100-.
3. The production method of the wide-width precise cold-rolled titanium material as claimed in claim 1, wherein: in the second step, the rolling force of the twenty-roller precision cold rolling unit is 3000KN for 2000-120 KN, the rolling tension is 40-120KN, the rolling speed is 250m/min for 150-250m/min, the rolling oil spraying speed is 200L/min, the rolling oil temperature is 35-40 ℃, and the single-pass deformation is 5-20%.
4. The production method of the wide-width precise cold-rolled titanium material as claimed in claim 1, wherein: the speed of the precise cold-rolled titanium material obtained in the step two in the step three passing through the degreasing cleaning unit is 120-150m/min, and the temperature of a water tank of the degreasing cleaning unit is 60-80 ℃.
5. The production method of the wide-width precise cold-rolled titanium material as claimed in claim 1, wherein: placing the precision cold-rolled titanium material obtained in the third step in the fourth step into the vacuum annealing furnace, heating the pure titanium strip to 660-700 ℃ along with the furnace at a heating speed of 140-plus-one 180 ℃/h when the vacuum degree in the furnace reaches 1.0 multiplied by 10 < -2 > Pa, preserving the heat for 40-60 minutes, then cooling along with the furnace, and closing a vacuum unit when the temperature of the pure titanium strip is reduced to 120 ℃; when the temperature of the pure titanium strip is reduced to below 50 ℃, discharging the pure titanium strip.
6. The production method of the wide-width precise cold-rolled titanium material as claimed in claim 1, wherein: the tension of the withdrawal and straightening machine in the fifth step is 40-80KN, the elongation is 0.2-0.6%, and the feeding speed of the precise cold-rolled titanium material obtained in the fourth step is 150-200 m/min.
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| CN111266404A (en) * | 2020-02-21 | 2020-06-12 | 贵研铂业股份有限公司 | Preparation method of titanium substrate for coated titanium anode plate |
| CN111389913A (en) * | 2020-03-17 | 2020-07-10 | 江苏甬金金属科技有限公司 | Manufacturing method of austenitic stainless steel foil for flexible product |
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