CN115323137A - Preparation method of titanium plate for architectural decoration - Google Patents
Preparation method of titanium plate for architectural decoration Download PDFInfo
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- CN115323137A CN115323137A CN202210263941.9A CN202210263941A CN115323137A CN 115323137 A CN115323137 A CN 115323137A CN 202210263941 A CN202210263941 A CN 202210263941A CN 115323137 A CN115323137 A CN 115323137A
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- 239000010936 titanium Substances 0.000 title claims abstract description 235
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 232
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 226
- 238000005034 decoration Methods 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 238000005097 cold rolling Methods 0.000 claims abstract description 62
- 238000005096 rolling process Methods 0.000 claims abstract description 42
- 238000000137 annealing Methods 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 35
- 239000002253 acid Substances 0.000 claims abstract description 28
- 230000008569 process Effects 0.000 claims abstract description 17
- 238000005406 washing Methods 0.000 claims abstract description 17
- 230000009467 reduction Effects 0.000 claims abstract description 15
- 238000003723 Smelting Methods 0.000 claims description 28
- 238000003754 machining Methods 0.000 claims description 22
- 238000005554 pickling Methods 0.000 claims description 19
- 239000000126 substance Substances 0.000 claims description 19
- 239000012535 impurity Substances 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 16
- 230000003746 surface roughness Effects 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000005242 forging Methods 0.000 claims description 11
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 9
- 229910021645 metal ion Inorganic materials 0.000 claims description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims description 9
- 239000011574 phosphorus Substances 0.000 claims description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 8
- 238000007788 roughening Methods 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 description 14
- 238000005098 hot rolling Methods 0.000 description 14
- 230000006872 improvement Effects 0.000 description 12
- 238000012545 processing Methods 0.000 description 8
- 230000001502 supplementing effect Effects 0.000 description 7
- 238000002156 mixing Methods 0.000 description 6
- 238000004321 preservation Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000003973 paint Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- 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
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
-
- 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
- B21B37/58—Roll-force control; Roll-gap control
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0268—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment between cold rolling steps
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/14—Roughness
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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- Crystallography & Structural Chemistry (AREA)
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Abstract
The invention belongs to the technical field of wide titanium sheet preparation, and particularly relates to a preparation method of a titanium sheet for architectural decoration, which is used for solving the technical problems that the wide titanium sheet prepared by a one-step cold rolling process is easy to cause poor plate shape and the reduction of the mechanical property, roughness, flatness, surface roughened color and roughness uniformity of a titanium sheet product. The preparation method of the titanium plate for architectural decoration comprises the following steps: providing a titanium plate blank; and sequentially carrying out hot continuous rolling, acid washing, primary cold rolling, annealing, secondary cold rolling and finishing on the titanium plate blank to obtain the titanium plate for architectural decoration. The preparation method provided by the invention can not only improve the mechanical strength, control precision, roughness and flatness of the titanium plate product while increasing the width and reducing the thickness of the titanium plate, but also improve the color and the roughness uniformity of the surface roughening, thereby being used as a decorative material for roofs, curtain walls and outer walls of large buildings.
Description
Technical Field
The embodiment of the invention relates to the technical field of preparation of wide titanium sheets, in particular to a preparation method of a titanium sheet for architectural decoration.
Background
With the rapid development of the architectural decoration field, the titanium plate has been widely applied to the roof, curtain wall, outer wall and other parts of large buildings due to the characteristics of attractive color, excellent corrosion resistance, low reflectivity and expansion coefficient, light weight, safety, environmental protection, energy conservation and the like, and has wide market prospect.
At present, a plurality of landmark buildings use titanium plates as decorative materials of outer walls, but the titanium plates for building decoration have higher requirements on thickness, flatness, surface roughness and uniformity, can not completely meet the requirements at home, and need to be imported from a large number of foreign countries, which results in high decorative cost. Meanwhile, the area of architectural decoration is generally huge, decoration generally needs to be completed through a large number of splicing, construction difficulty and high cost can be caused, the overall effect of decoration is poor, the width of the titanium plate needs to be improved while the thickness is reduced, and therefore the effect that splicing is reduced to improve the overall effect and reduce the construction difficulty and cost is achieved.
However, the conventional one-time cold rolling method for preparing a wide titanium sheet is not only prone to the problem of poor sheet shape, but also causes the mechanical property, roughness and flatness of the sheet to be obviously reduced and the color and roughness of the surface roughening of the sheet product to be uneven due to the influence of the rolling and annealing procedures, parameter design and/or control and other factors in the preparation process.
Disclosure of Invention
The embodiment of the invention aims to provide a preparation method of a titanium plate for architectural decoration, which adopts a process scheme of combining continuous annealing and secondary cold rolling, thereby solving the technical problems that the wide titanium sheet prepared by the primary cold rolling process is easy to generate poor plate shape and the mechanical property, roughness, flatness, surface roughened color and roughness uniformity of the titanium plate product are easy to reduce.
In order to achieve the purpose, the technical scheme of the embodiment of the invention is as follows:
the embodiment of the invention provides a preparation method of a titanium plate for architectural decoration, which comprises the following steps:
providing a titanium plate blank;
and sequentially carrying out hot continuous rolling, acid washing, primary cold rolling, annealing, secondary cold rolling and finishing on the titanium plate blank to obtain the titanium plate for architectural decoration.
In a further improvement scheme of the embodiment of the invention, the titanium plate for architectural decoration has a thickness of 0.36-0.40mm, a width of 1250mm, a tensile strength Rm of not less than 345MPa and a yield strength Rp 0.2 Not less than 275MPa, elongation after break A 50 (TD) is more than or equal to 15 percent, and the surface roughness is more than or equal to 4.28um.
In a further improvement of the embodiment of the invention, the titanium plate blank comprises the following chemical components in percentage by mass:
o is less than or equal to 0.05 percent; fe is less than or equal to 0.03 percent; c is less than or equal to 0.01 percent; n is less than or equal to 0.01 percent; h is less than or equal to 0.015 percent; the balance of Ti and unavoidable impurities;
the total amount of the inevitable impurities is less than or equal to 0.02 percent.
In a further improvement of the embodiment of the present invention, the method for preparing the titanium slab includes:
preparing by adopting vacuum consumable equipment through a three-time smelting mode to obtain an ingot; and
and forging the cast ingot to obtain a titanium slab.
In a further refinement of an embodiment of the present invention, the pickling process comprises:
controlling the pressing amount of the phosphorus breaking machine to be 20-50mm, and then utilizing HNO 3 Acid washing with mixed acid of HF, wherein the HNO 3 The mass concentration of the HF is 70-120g/L, and the mass concentration of the HF is 12-16g/L; the temperature in the acid washing is controlled to be 30-50 ℃, and the metal ions are controlled to be less than or equal to 80g/L.
In a further improvement of the embodiment of the present invention, the annealing process is a continuous annealing under the protection of Ar atmosphere;
the temperature of the continuous annealing is 680-860 ℃ and the time is 90-180sec.
In a further improvement of the embodiment of the invention, a double-frame six-roller UCM rolling mill is used in the secondary cold rolling procedure;
the double-frame six-roller UCM rolling mill consists of a first machining center and a second machining center, and chromium layers are plated on the surfaces of working rollers of the first machining center and the second machining center.
In a further improvement of the embodiment of the invention, the reduction rate of the first machine is controlled to be 5-18%, and the rolling force is controlled to be 312-400t; the elongation of the second machine is controlled to be 1.5 +/-0.5%.
In a further improvement of the embodiment of the invention, the roughness of the working roll of the first machining is controlled to be 0.335-0.365, and the roughness of the working roll of the second machining is controlled to be 0.665-0.765.
In a further improvement of the embodiment of the present invention, the working roll crown of each of the first machining and the second machining is 8/1000.
Compared with the prior art, the advantages or beneficial effects of the embodiment of the invention at least comprise:
according to the preparation method of the titanium plate for architectural decoration, provided by the embodiment of the invention, the continuous annealing process and the secondary cold rolling process are combined, so that on one hand, the problem of poor plate shape can be effectively improved by utilizing the special high temperature and proper tension condition of the continuous annealing mode, the annealing uniformity of the titanium plate is improved, and the improvement of the grain size uniformity is realized to improve the product performance; on the other hand, the titanium plate can be further thinned by a secondary cold rolling mode on the basis of improving the mechanical property of the titanium plate product, so that the required roughness and straightness are obtained. In addition, the preparation method of the embodiment of the invention also simplifies the preparation procedure, and realizes the improvement of the production efficiency and the reduction of the energy consumption. Based on the method, the titanium plate obtained by the preparation method has the advantages of high strength, low thickness, large width, high control precision, excellent roughness and flatness, and uniform color and roughness of surface roughening, so that the production cost is reduced, and the strength, the forming performance, the color and the roughness uniformity of the surface roughening of the titanium plate for architectural decoration are improved.
The test results of the examples show that the titanium plate for architectural decoration prepared by the invention has the thickness of 0.36-0.40mm, the width of 1250mm, the tensile strength Rm not less than 345MPa and the yield strength Rp 0.2 Not less than 275MPa, elongation after break A 50 (TD) is not less than 15%, the surface roughness is not less than 4.28um, and the paint has good mechanical property and uniform roughness and color.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some of the embodiments described in the present application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic flow chart of a method for preparing a titanium plate for architectural decoration according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in further detail with reference to the embodiments shown in the drawings, but it should be noted that these embodiments do not limit the embodiments of the present invention, and those skilled in the art can make functional or methodological equivalent changes or substitutions according to the embodiments, and all the modifications and substitutions fall within the scope of the embodiments of the present invention.
In order to solve the technical problems that poor plate shape is easy to occur in a wide titanium sheet prepared by a one-time cold rolling process, and the mechanical property, roughness, flatness, surface roughened color and uniformity of roughness of the prepared titanium sheet product are easy to reduce, the embodiment provides a preparation method of a titanium sheet for architectural decoration.
As shown in fig. 1, the method for preparing the titanium plate for architectural decoration comprises the following steps.
Providing a titanium plate blank;
and sequentially carrying out hot continuous rolling, acid pickling, primary cold rolling, annealing, secondary cold rolling and finishing on the titanium plate blank to obtain the titanium plate for architectural decoration.
In this embodiment, when providing the titanium slab, the chemical composition of the titanium slab is preferably designed as follows: less than or equal to 0.05 percent of O, less than or equal to 0.03 percent of Fe, less than or equal to 0.01 percent of C, less than or equal to 0.01 percent of N, less than or equal to 0.015 percent of H, and the balance of Ti and inevitable impurities, wherein the total amount of the inevitable impurities is less than or equal to 0.02 percent, so that the rolling reduction and the plate shape control of the titanium plate blank are facilitated. It should be noted that although the element O, N, C, fe can improve the strength of the slab, the shaping is reduced, so that the embodiment of the invention controls O to be less than or equal to 0.05%, fe to be less than or equal to 0.03%, C to be less than or equal to 0.01%, and N to be less than or equal to 0.01%, thereby effectively solving the problems of difficult thickness reduction, difficult slab shape control and the like caused by too large deformation resistance in the rolling process.
In a possible embodiment of the present embodiment, the titanium slab is preferably designed to have a chemical composition as shown in table 1 in mass percentage.
TABLE 1-preferred design titanium slab chemistry
The preferred preparation method for providing the titanium slab in this embodiment is as follows: pressing electrodes on the titanium sponge raw material according to the chemical components of the designed titanium plate blank, and then carrying out vacuum consumable arc melting to obtain an ingot; and forging the cast ingot to obtain a slab. It should be noted that the titanium sponge is preferably grade 0 titanium sponge or grade 1 titanium sponge, and the specific source of the titanium sponge is not particularly limited in this embodiment, so as to obtain a titanium plate blank satisfying the chemical composition requirement, for example, the titanium sponge can be commercially obtained,
further, the number of times of vacuum consumable arc melting in this embodiment is three, wherein the current for the first melting is 14kA, and the voltage is 28V; the current of the second smelting is 18kA, and the voltage is 30V; the current of the third smelting is 26kA, and the voltage is 33V.
Further, the forging process according to the present embodiment preferably includes:
keeping the temperature of the cast ingot at 800 ℃ for 120min, heating to 1040 ℃, and keeping the temperature for 490min;
upsetting the ingot after heat preservation to 1060mm, and widening to 600mm multiplied by 1200mm multiplied by L;
and (4) carrying out furnace returning and fire supplementing at the temperature of 980 ℃ for less than or equal to 3h, and forging to a target size.
In this embodiment, the step of hot continuous rolling the titanium slab preferably includes: heating the titanium plate blank to 900 +/-20 ℃ by using a gas furnace, keeping the temperature for 180-350min, conveying the titanium plate blank to an inlet of a hot rolling mill through a conveying roller way, and carrying out hot rolling at the temperature of 750-860 ℃ to obtain a hot rolled titanium strip, wherein the thickness of the hot rolled titanium strip is 2.0-3.0mm; the rolling deformation is more than 98 percent. .
In the present example, the preferable pickling step for pickling the hot-rolled titanium strip includes: controlling the pressing amount of the phosphorus breaking machine to be 20-50mm, and then utilizing HNO 3 Pickling with a mixed acid of HF to remove an oxide layer on the surface of the hot-rolled titanium strip, wherein the HNO 3 The mass concentration of the HF is 70-120g/L, and the mass concentration of the HF is 12-16g/L; the temperature in the acid washing is controlled to be 30-50 ℃, and the metal ions are controlled to be less than or equal to 80g/L.
In this embodiment, the preferred processes of the primary cold rolling are as follows: and carrying out primary cold rolling on the titanium plate blank subjected to acid washing to obtain the cold-rolled titanium strip. Wherein the number of times of one cold rolling is 12-16; the deformation is 75.5-83.9%.
In this embodiment, the annealing is preferably continuous annealing under the protection of Ar atmosphere, where the temperature of the continuous annealing is 680 to 860 ℃ and the time is 90 to 180sec. In this example, a continuous annealing method (CA) was used, the annealing temperature was 680-860 ℃ and the through-plate tension was 13-17N/m 2 Under the annealing temperature and tension conditions, the problem of poor plate shape of the primary cold-rolled material can be effectively solved, the annealing uniformity can be improved, and the grain size uniformity is improved to improve the product performance.
The preferred processes of the secondary cold rolling in this embodiment are: and (3) carrying out secondary cold rolling on the annealed titanium plate blank by using a double-frame six-roller UCM rolling mill. It will be appreciated by those skilled in the art that the dual stand six roll UCM mill consists of a first mill that controls the reduction of the second cold rolling and a second mill that controls the roughness of the surface of the titanium slab. It should be noted that, the surfaces of the working rolls of the first machining center and the second machining center are respectively plated with a chromium layer, so that the problems of attenuation of surface roughness of the titanium plate blank, surface color difference and the like can be effectively solved; the first mechanical rolling reduction is preferably controlled to be 5-18%, and the rolling force is preferably controlled to be 312-400t; the elongation of the second machine processing is preferably controlled to be 1.5 +/-0.5%; the roughness of the working roll of the first machine is preferably controlled to be 0.335-0.365, and the roughness of the working roll of the second machine is preferably controlled to be 0.665-0.765; the convexity of the working roll of the first machining and the convexity of the working roll of the second machining are both preferably 8/1000.
In a possible embodiment of this example, the process parameters for the second cold rolling are preferably controlled as shown in table 2.
TABLE 2-Process parameters for controlling the Secondary Cold Rolling
In this example, the thicknesses of the titanium plates for architectural decoration prepared by the process parameters of tables 1 and 2 were 0.36mm, 0.38mm,0.40mm, 1250mm in width, rm not less than 345MPa in tensile strength, rp0.2 not less than 275MPa in yield strength, and A in elongation after fracture 50 (TD) is more than or equal to 15 percent, and the surface roughness is more than or equal to 4.28um.
From the above, the preparation method of the titanium plate for architectural decoration provided by the embodiment combines the continuous annealing process and the secondary cold rolling process, on one hand, the problem of poor plate shape can be effectively improved by utilizing the special high temperature and proper tension condition of the continuous annealing mode, and the method is beneficial to improving the annealing uniformity of the titanium plate, and realizes the improvement of the grain size uniformity to improve the product performance; on the other hand, the titanium plate can be further thinned on the basis of improving the mechanical property of the titanium plate product through a secondary cold rolling mode, so that the required roughness and straightness are obtained. In addition, the preparation method of the embodiment of the invention also simplifies the preparation procedure, and realizes the improvement of the production efficiency and the reduction of the energy consumption. Based on the method, the titanium plate obtained by the preparation method has the advantages of high strength, low thickness, large width, high control precision, excellent roughness and flatness, and uniform color and roughness of surface roughening, so that the production cost is reduced, and the strength, the forming performance, the color and the roughness uniformity of the surface roughening of the titanium plate for architectural decoration are improved.
The method for producing the titanium plate for architectural decoration according to the present invention will be described in detail with reference to the following specific examples.
Example 1
The embodiment 1 provides a preparation method of a titanium plate for architectural decoration, which includes the following steps:
step S10: providing a titanium plate blank
The titanium plate for architectural decoration comprises the following chemical components in percentage by mass
O 0.031％；Fe 0.017％；C 0.012％；N 0.003％；H 0.0006％；
The balance of Ti and unavoidable impurities;
wherein the inevitable impurities are less than or equal to 0.02 percent.
Mixing and pressing 0-grade sponge titanium into an electrode according to the chemical components of the designed titanium plate for architectural decoration, and then smelting for three times by using a vacuum consumable arc furnace to obtain a titanium ingot, wherein the current for the first smelting is 14kA, and the voltage is 28V; the current of the second smelting is 18kA, and the voltage is 30V; the current of the third smelting is 26kA, and the voltage is 33V;
processing the titanium ingot as follows:
keeping the temperature of the cold materials at 800 ℃ for 120min after charging, continuously heating to 1040 ℃, and keeping the temperature for 490min;
upsetting to 1060mm and starting broadening to 600mm × 1200mm × L;
and (4) carrying out furnace returning and fire supplementing at the temperature of 980 ℃ for less than or equal to 3h, and forging to a target size.
Step S201: sequentially carrying out hot continuous rolling on the titanium plate blank
Heating the titanium plate blank to 900 +/-20 ℃ by using a gas furnace, keeping the temperature for 180-350min, conveying the titanium plate blank to the inlet of a hot rolling mill through a conveying roller way, and carrying out hot rolling at the temperature of 750-860 ℃ to obtain a hot rolled titanium strip, wherein the thickness of the hot rolled titanium strip is 2.0-3.0mm; the rolling deformation is more than 98 percent.
Step S202: pickling the hot-rolled titanium strip
Controlling the pressing amount of the phosphorus breaking machine to be 20-50mm, and then utilizing HNO 3 Pickling with a mixed acid of HF to remove an oxide layer on the surface of the hot-rolled titanium strip, wherein the HNO 3 The mass concentration of the HF is 70-120g/L, and the mass concentration of the HF is 12-16g/L; the temperature in the acid washing is controlled to be 30-50 ℃, and the metal ions are controlled to be less than or equal to 80g/L;
step S203: carrying out primary cold rolling on the acid-washed titanium strip
Carrying out primary cold rolling on the acid-washed titanium belt to obtain a cold-rolled titanium belt, wherein the number of passes of the primary cold rolling is 15; the deflection is 75.56%;
step S204: continuously annealing the once cold-rolled titanium strip
Continuously annealing the titanium strip subjected to the primary cold rolling, wherein the annealing temperature is 680 ℃, the heat preservation time is 78sec, and the through plate tension in the furnace is 13-17N/m 2 ；
Step S205: secondary cold rolling the annealed titanium strip
Carrying out secondary cold rolling on the annealed titanium plate blank by using a double-frame six-roller UCM rolling mill, wherein the first machining control reduction rate is 18.18%, the rolling force is 400t, and the roughness of a working roller (WR 1) is 0.335um; secondly, controlling the surface roughness by machining, wherein the elongation is 0.6%, and the roughness of a working roll (WR 2) is 0.665um; the convexity of the working rolls (WR 1 and WR 2) is 8/1000.
Step S206: and finishing the cold-rolled titanium strip.
Example 2
The embodiment 2 provides a preparation method of a titanium plate for architectural decoration, which includes the following steps:
step S10: providing a titanium plate blank
The titanium plate for architectural decoration comprises the following chemical components in percentage by mass
O 0.037％；Fe 0.019％；C 0.008％；N 0.003％；H 0.0006％；
The balance of Ti and unavoidable impurities;
wherein the inevitable impurities are less than or equal to 0.02 percent.
Mixing and pressing 0-grade sponge titanium into an electrode according to the chemical components of the designed titanium plate for architectural decoration, and then smelting for three times by using a vacuum consumable arc furnace to obtain a titanium ingot, wherein the current for the first smelting is 14kA, and the voltage is 28V; the current of the second smelting is 18kA, and the voltage is 30V; the current of the third smelting is 26kA, and the voltage is 33V;
processing the titanium ingot as follows:
keeping the temperature of the cold materials at 800 ℃ for 120min after charging, continuously heating to 1040 ℃, and keeping the temperature for 490min;
upsetting to 1060mm and starting broadening to 600mm × 1200mm × L;
and (4) carrying out furnace returning and fire supplementing at the temperature of 980 ℃ for less than or equal to 3h, and forging to a target size.
Step S201: sequentially carrying out hot continuous rolling on the titanium plate blank
Heating the titanium plate blank to 900 +/-20 ℃ by using a gas furnace, keeping the temperature for 180-350min, conveying the titanium plate blank to an inlet of a hot rolling mill through a conveying roller way, and carrying out hot rolling at the temperature of 750-860 ℃ to obtain a hot rolled titanium strip, wherein the thickness of the hot rolled titanium strip is 2.0-3.0mm; the rolling deformation is more than 98 percent.
Step S202: pickling the hot-rolled titanium strip
Controlling the pressing amount of the phosphorus breaking machine to be 20-50mm, and then utilizing HNO 3 Pickling with a mixed acid of HF to remove an oxide layer on the surface of the hot-rolled titanium strip, wherein the HNO 3 The mass concentration of the HF is 70-120g/L, and the mass concentration of the HF is 12-16g/L; the temperature in the acid washing is controlled to be 30-50 ℃, and the metal ions are controlled to be less than or equal to 80g/L;
step S203: carrying out primary cold rolling on the acid-washed titanium strip
Carrying out primary cold rolling on the acid-washed titanium belt to obtain a cold-rolled titanium belt, wherein the number of passes of the primary cold rolling is 15; the deflection was 77.50%.
Step S204: continuously annealing the once cold-rolled titanium strip
Continuously annealing the titanium strip subjected to the primary cold rolling at 695 ℃, keeping the temperature for 89sec, and controlling the through plate tension in the furnace to be 13-17N/m 2 。
Step S205: secondary cold rolling the annealed titanium strip
Carrying out secondary cold rolling on the annealed titanium plate blank by using a double-frame six-roller UCM rolling mill, wherein the first machining control reduction rate is 15.56%, the rolling force is 388t, and the roughness of a working roller (WR 1) is 0.340um; secondly, controlling the surface roughness by machining, wherein the elongation is 0.8%, and the roughness of a working roll (WR 2) is 0.705um; the convexity of the working rolls (WR 1 and WR 2) is 8/1000;
step S206: and finishing the cold-rolled titanium strip.
Example 3
The embodiment 3 provides a preparation method of a titanium plate for architectural decoration, which includes the following steps:
step S10: providing a titanium plate blank
The titanium plate for architectural decoration comprises the following chemical components in percentage by mass
O 0.042％；Fe 0.021％；C 0.012％；N 0.004％；H 0.0006％；
The balance of Ti and unavoidable impurities;
wherein the inevitable impurities are less than or equal to 0.02 percent.
Mixing and pressing 0-grade sponge titanium into electrodes according to the chemical components of the designed titanium plate for architectural decoration, and then smelting for three times by using a vacuum consumable arc furnace to obtain a titanium ingot, wherein the current for the first smelting is 14kA, and the voltage is 28V; the current of the second smelting is 18kA, and the voltage is 30V; the current of the third smelting is 26kA, and the voltage is 33V;
processing the titanium ingot as follows:
keeping the temperature of the cold materials at 800 ℃ for 120min after charging, continuously heating to 1040 ℃, and keeping the temperature for 490min;
upsetting to 1060mm and starting broadening to 600mm × 1200mm × L;
and (4) carrying out furnace returning and fire supplementing at the temperature of 980 ℃ for less than or equal to 3h, and forging to a target size.
Step S201: sequentially carrying out hot continuous rolling on the titanium plate blank
Heating the titanium plate blank to 900 +/-20 ℃ by using a gas furnace, keeping the temperature for 180-350min, conveying the titanium plate blank to an inlet of a hot rolling mill through a conveying roller way, and carrying out hot rolling at the temperature of 750-860 ℃ to obtain a hot rolled titanium strip, wherein the thickness of the hot rolled titanium strip is 2.0-3.0mm; the rolling deformation is more than 98 percent. .
Step S202: pickling the hot-rolled titanium strip
Controlling the pressing amount of the phosphorus breaking machine to be 20-50mm, and then utilizing HNO 3 Pickling with a mixed acid of HF to remove an oxide layer on the surface of the hot-rolled titanium strip, wherein the HNO 3 The mass concentration of the HF is 70-120g/L, and the mass concentration of the HF is 12-16g/L; the temperature in the acid washing is controlled to be 30-50 ℃, and the metal ions are controlled to be less than or equal to 80g/L;
step S203: carrying out primary cold rolling on the acid-washed titanium strip
Carrying out primary cold rolling on the titanium strip subjected to acid washing to obtain a cold-rolled titanium strip, wherein the number of the primary cold rolling passes is 16; the deflection was 79.55%.
Step S204: continuously annealing the once cold-rolled titanium strip
Continuously annealing the titanium strip subjected to the primary cold rolling, wherein the annealing temperature is 703 ℃, the heat preservation time is 108sec, and the through plate tension in the furnace is 13-17N/m 2 。
Step S205: carrying out secondary cold rolling on the annealed titanium strip
Carrying out secondary cold rolling on the annealed titanium plate blank by using a double-frame six-roller UCM rolling mill, wherein the first machining control reduction rate is 11.11%, the rolling force is 382t, and the roughness of a working roller (WR 1) is 0.345um; secondly, controlling the surface roughness by machining, wherein the elongation rate is 1.0 percent, and the roughness of a working roll (WR 2) is 0.685um; the convexity of the working rolls (WR 1 and WR 2) is 8/1000;
step S206: and finishing the cold-rolled titanium strip.
Example 4
The embodiment 4 provides a preparation method of a titanium plate for architectural decoration, which includes the following steps:
step S10: providing a titanium plate blank
The titanium plate for architectural decoration comprises the following chemical components in percentage by mass
O 0.044％；Fe 0.025％；C 0.017％；N 0.003％；H 0.0006％；
The balance of Ti and unavoidable impurities;
wherein the inevitable impurities are less than or equal to 0.02 percent.
Mixing and pressing 0-grade sponge titanium into an electrode according to the chemical components of the designed titanium plate for architectural decoration, and then smelting for three times by using a vacuum consumable arc furnace to obtain a titanium ingot, wherein the current for the first smelting is 14kA, and the voltage is 28V; the current of the second smelting is 18kA, and the voltage is 30V; the current of the third smelting is 26kA, and the voltage is 33V;
processing the titanium ingot as follows:
keeping the temperature of the cold charge at 800 ℃ for 120min after charging, continuously heating to 1040 ℃, and keeping the temperature for 490min;
upsetting to 1060mm and starting broadening to 600mm × 1200mm × L;
and (3) carrying out furnace returning and fire supplementing at the temperature of 980 ℃, wherein the time is less than or equal to 3h, and forging to a target size.
Step S201: sequentially carrying out hot continuous rolling on the titanium plate blank
Heating the titanium plate blank to 900 +/-20 ℃ by using a gas furnace, keeping the temperature for 180-350min, conveying the titanium plate blank to an inlet of a hot rolling mill through a conveying roller way, and carrying out hot rolling at the temperature of 750-860 ℃ to obtain a hot rolled titanium strip, wherein the thickness of the hot rolled titanium strip is 2.0-3.0mm; the rolling deformation is more than 98 percent. .
Step S202: pickling the hot-rolled titanium strip
Controlling the pressing amount of the phosphorus breaking machine to be 20-50mm, and then utilizing HNO 3 Pickling with a mixed acid of HF to remove an oxide layer on the surface of the hot-rolled titanium strip, wherein the HNO 3 The mass concentration of the HF is 70-120g/L, and the mass concentration of the HF is 12-16g/L; the temperature in the acid washing is controlled to be 30-50 ℃, and the metal ions are controlled to be less than or equal to 80g/L;
step S203: carrying out primary cold rolling on the acid-washed titanium strip
Carrying out primary cold rolling on the titanium strip subjected to acid washing to obtain a cold-rolled titanium strip, wherein the number of the primary cold rolling passes is 16; the deformation amount was 80.43%.
Step S204: continuously annealing the once cold-rolled titanium strip
Continuously annealing the titanium strip subjected to the primary cold rolling at 721 ℃, keeping the temperature for 124sec and keeping the through plate tension in the furnace at 13-17N/m 2 。
Step S205: secondary cold rolling the annealed titanium strip
Carrying out secondary cold rolling on the annealed titanium plate blank by using a double-frame six-roller UCM rolling mill, wherein the first machining control reduction rate is 8.89%, the rolling force is 335t, and the roughness of a working roller (WR 1) is 0.335um; secondly, controlling the surface roughness by machining, wherein the elongation is 1.2%, and the roughness of a working roll (WR 2) is 0.805um; the convexity of the working rolls (WR 1 and WR 2) is 8/1000;
step S206: and finishing the cold-rolled titanium strip TA 2.
Example 5
The embodiment 5 provides a method for preparing a titanium plate for architectural decoration, which comprises the following steps:
step S10: providing a titanium plate blank
According to the mass percentage, the titanium plate for architectural decoration is designed to have the chemical components
O 0.047％；Fe 0.025％；C 0.012％；N 0.004％；H 0.0006％；
The balance of Ti and unavoidable impurities;
wherein the inevitable impurities are less than or equal to 0.02 percent.
Mixing and pressing 0-grade sponge titanium into an electrode according to the chemical components of the designed titanium plate for architectural decoration, and then smelting for three times by using a vacuum consumable arc furnace to obtain a titanium ingot, wherein the current for the first smelting is 14kA, and the voltage is 28V; the current of the second smelting is 18kA, and the voltage is 30V; the current of the third smelting is 26kA, and the voltage is 33V;
processing the titanium ingot as follows:
keeping the temperature of the cold materials at 800 ℃ for 120min after charging, continuously heating to 1040 ℃, and keeping the temperature for 490min;
upsetting to 1060mm and starting broadening to 600mm × 1200mm × L;
and (3) carrying out furnace returning and fire supplementing at the temperature of 980 ℃, wherein the time is less than or equal to 3h, and forging to a target size.
Step S201: sequentially carrying out hot continuous rolling on the titanium plate blank
Heating the titanium plate blank to 900 +/-20 ℃ by using a gas furnace, keeping the temperature for 180-350min, conveying the titanium plate blank to an inlet of a hot rolling mill through a conveying roller way, and carrying out hot rolling at the temperature of 750-860 ℃ to obtain a hot rolled titanium strip, wherein the thickness of the hot rolled titanium strip is 2.0-3.0mm; the rolling deformation is more than 98 percent.
Step S202: pickling the hot-rolled titanium strip
Controlling the pressing amount of the phosphorus breaking machine to be 20-50mm, and then utilizing HNO 3 Pickling with a mixed acid of HF to remove an oxide layer on the surface of the hot-rolled titanium strip, wherein the HNO 3 The mass concentration of the HF is 70-120g/L, and the mass concentration of the HF is 12-16g/L; the temperature in the acid washing is controlled to be 30-50 ℃, and the metal ions are controlled to be less than or equal to 80g/L;
step S203: carrying out primary cold rolling on the acid-washed titanium strip
Carrying out primary cold rolling on the titanium strip subjected to acid washing to obtain a cold-rolled titanium strip, wherein the number of the primary cold rolling passes is 16; the deformation was 83.93%.
Step S204: continuously annealing the once cold-rolled titanium strip
Continuously annealing the titanium strip subjected to primary cold rolling, wherein the annealing temperature is 752 ℃, the heat preservation time is 166sec, and the through plate tension in a furnace is 13-17N/m 2 。
Step S205: secondary cold rolling the annealed titanium strip
Carrying out secondary cold rolling on the annealed titanium plate blank by using a double-frame six-roller UCM rolling mill, wherein the first machining control reduction rate is 6.67%, the rolling force is 312t, and the roughness of a working roller (WR 1) is 0.365um; secondly, controlling the surface roughness by machining, wherein the elongation is 1.4%, and the roughness of a working roll (WR 2) is 0.765um; the convexity of the working rolls (WR 1 and WR 2) is 8/1000;
step S206: and finishing the cold-rolled titanium strip TA 2.
Example 6
The embodiment 6 provides a preparation method of a titanium plate for architectural decoration, which includes the following steps:
step S10: providing a titanium plate blank
The titanium plate for architectural decoration comprises the following chemical components in percentage by mass
O 0.062％；Fe 0.07％；C 0.012％；N 0.004％；H 0.0006％；
The balance of Ti and unavoidable impurities;
wherein the inevitable impurities are less than or equal to 0.02 percent.
Mixing and pressing 0-grade sponge titanium into an electrode according to the chemical components of the designed titanium plate for architectural decoration, and then smelting for three times by using a vacuum consumable arc furnace to obtain a titanium ingot, wherein the current for the first smelting is 14kA, and the voltage is 28V; the current of the second smelting is 18kA, and the voltage is 30V; the current of the third smelting is 26kA, and the voltage is 33V;
processing the titanium ingot as follows:
keeping the temperature of the cold materials at 800 ℃ for 120min after charging, continuously heating to 1040 ℃, and keeping the temperature for 490min;
upsetting to 1060mm and starting broadening to 600mm × 1200mm × L;
and (4) carrying out furnace returning and fire supplementing at the temperature of 980 ℃ for less than or equal to 3h, and forging to a target size.
Step S201: sequentially carrying out hot continuous rolling on the titanium plate blank
Heating the titanium plate blank to 900 +/-20 ℃ by using a gas furnace, keeping the temperature for 180-350min, conveying the titanium plate blank to an inlet of a hot rolling mill through a conveying roller way, and carrying out hot rolling at the temperature of 750-860 ℃ to obtain a hot rolled titanium strip, wherein the thickness of the hot rolled titanium strip is 2.0-3.0mm; the rolling deformation is more than 98 percent.
Step S202: pickling the hot-rolled titanium strip
Controlling the pressing amount of the phosphorus breaking machine to be 20-50mm, and then utilizing HNO 3 Pickling with a mixed acid of HF to remove an oxide layer on the surface of the hot-rolled titanium strip, wherein the HNO 3 The mass concentration of the HF is 70-120g/L, and the mass concentration of the HF is 12-16g/L; the temperature in the acid washing is controlled to be 30-50 ℃, and the metal ions are controlled to be less than or equal to 80g/L;
step S203: carrying out primary cold rolling on the acid-washed titanium strip
Carrying out primary cold rolling on the acid-washed titanium belt to obtain a cold-rolled titanium belt, wherein the number of passes of the primary cold rolling is 16; the deflection was 85.91%.
Step S204: continuously annealing the once cold-rolled titanium strip
Continuously annealing the titanium strip subjected to the primary cold rolling, wherein the annealing temperature is 735 ℃, the heat preservation time is 175sec, and the through plate tension in a furnace is 13-17N/m 2 。
Step S205: secondary cold rolling the annealed titanium strip
Carrying out secondary cold rolling on the annealed titanium plate blank by using a double-frame six-roller UCM rolling mill, wherein the first machining control reduction rate is 6.2%, the rolling force is 375t, and the roughness of a working roller (WR 1) is 0.385um; secondly, controlling the surface roughness by machining, wherein the elongation is 1.2%, and the roughness of a working roll (WR 2) is 0.72um; the convexity of the working rolls (WR 1 and WR 2) is 8/1000;
step S206: and finishing the cold-rolled titanium strip TA 2.
The titanium sheets for architectural decoration prepared in examples 1 to 6 were subjected to the performance measurement, and the results are shown in Table 3.
TABLE 3 transverse mechanical properties and surface roughness of titanium plate for architectural decoration according to an embodiment of the present invention
As can be seen from table 3, the titanium plate for architectural decoration prepared in examples 1 to 5 of the present invention has good mechanical properties and surface roughness, wherein, compared with examples 4 to 5, examples 1 to 3 have better mechanical properties under the condition of ensuring a certain shaping, and example 6 has different chemical compositions compared with other examples, and the final shaping cannot meet the deep processing of the titanium plate, and the surface roughness is lower, which needs further optimization.
It will be evident to those skilled in the art that the embodiments of the present invention are not limited to the details of the foregoing illustrative embodiments, and that the embodiments of the present invention are capable of being embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the embodiments being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. The preparation method of the titanium plate for architectural decoration is characterized by comprising the following steps:
providing a titanium plate blank;
and sequentially carrying out hot continuous rolling, acid pickling, primary cold rolling, annealing, secondary cold rolling and finishing on the titanium plate blank to obtain the titanium plate for architectural decoration.
2. The method for preparing the titanium plate for architectural decoration according to claim 1, wherein the titanium plate for architectural decoration has a thickness of 0.36-0.40mm, a width of 1250mm, a tensile strength Rm of not less than 345MPa and a yield strength Rp 0.2 Not less than 275MPa, elongation after break A 50 (TD) is not less than 15%, and the surface roughness is not less than 4.28um.
3. The method for preparing the titanium plate for architectural decoration according to claim 2, wherein the titanium plate blank comprises the following chemical components in percentage by mass:
o is less than or equal to 0.05 percent; fe is less than or equal to 0.03 percent; c is less than or equal to 0.01 percent; n is less than or equal to 0.01 percent; h is less than or equal to 0.015 percent; the balance of Ti and unavoidable impurities;
the total amount of the inevitable impurities is less than or equal to 0.02 percent.
4. The method of manufacturing a titanium plate for architectural decoration according to claim 3, wherein the method of manufacturing a titanium plate blank includes:
preparing by adopting vacuum consumable equipment through a three-time smelting mode to obtain an ingot; and
and forging the cast ingot to obtain a titanium plate blank.
5. The method for producing a titanium plate for architectural decoration according to claim 2, wherein the pickling process comprises: controlling the pressing amount of the phosphorus breaking machine to be 20-50mm, and then utilizing HNO 3 Acid washing with mixed acid of HF, wherein the HNO 3 The mass concentration of the HF is 70-120g/L, and the mass concentration of the HF is 12-16g/L; the temperature in the acid washing is controlled to be 30-50 ℃, and the metal ions are controlled to be less than or equal to 80g/L.
6. The method for producing a titanium plate for architectural decoration according to claim 1, wherein the annealing step is continuous annealing under protection of Ar atmosphere;
the temperature of the continuous annealing is 680-860 ℃ and the time is 90-180sec.
7. The method for manufacturing a titanium plate for architectural decoration according to claim 1, wherein a double-stand six-roll UCM mill is used in the secondary cold rolling process;
the double-frame six-roller UCM rolling mill consists of a first machining center and a second machining center, and chromium layers are plated on the surfaces of working rollers of the first machining center and the second machining center.
8. The method for preparing the titanium plate for architectural decoration according to claim 7, wherein the first mechanical rolling reduction is controlled to be 5-18%, and the rolling force is controlled to be 312-400t; the elongation of the second machine is controlled to be 1.5 +/-0.5%.
9. The method of manufacturing titanium plate for architectural decoration according to claim 7, wherein the roughness of the work roll of the first machining is controlled to 0.335 to 0.365, and the roughness of the work roll of the second machining is controlled to 0.665 to 0.765.
10. The method for producing a titanium plate for architectural decoration according to claim 7, wherein the work roll crown of each of the first machining and the second machining is 8/1000.
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