CN103464461B - Preparation method for TB8 titanium alloy foil - Google Patents
Preparation method for TB8 titanium alloy foil Download PDFInfo
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- CN103464461B CN103464461B CN201310426360.3A CN201310426360A CN103464461B CN 103464461 B CN103464461 B CN 103464461B CN 201310426360 A CN201310426360 A CN 201310426360A CN 103464461 B CN103464461 B CN 103464461B
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Abstract
The invention provides a preparation method for a TB8 titanium alloy foil. The method comprises the following steps: I, performing primary sealed annealing treatment on a TB8 titanium alloy plate of which the thickness is 0.3-0.5 millimeter; II, rolling the TB8 titanium alloy plate by using a cold press, and performing secondary sealed annealing treatment when the rolling deflection is up to 25-30 percent; and III, repeating the step II to obtain a TB8 titanium alloy foil of which the thickness is 0.08-0.2 millimeter. The preparation method has the advantages of simple preparation process, reasonable process design and superior product quality; the TB8 titanium alloy foil prepared by the method has the advantages of high surface smoothness, high plate flatness, small same-plate deviation and suitability for large-scale industrial production.
Description
Technical field
The invention belongs to titanium alloy material processing technique field, be specifically related to a kind of preparation method of TB8 titanium alloy foil.
Background technology
TB8 titanium alloy (i.e. U.S. β-21S titanium alloy) is that Timet company of the U.S. is according to the demand of American National aerospace program to anti-oxidation metal based composites matrix, the novel metastableβtitaniumalloy of one of exploitation, its nominal composition is Ti-15Mo-2.7Nb-3Al-0.25Si.TB8 titanium alloy has excellent cold and hot working performance and cold forming capability, intensity-plasticity high comprehensive performance, and high-temperature oxidation resistance is excellent, is the ideal material of wind scooper class part near aircraft engine nacelle.The flat cold-rolled sheet material thickness of this alloy is generally 0.3mm at present.But very large difficulty is existed for the preparation of the foil of thickness at below 0.3mm, particularly 0.08mm ~ 0.2mm foil.Major Difficulties has: 1. the cold roller and deformed drag of TB8 titanium alloy is large, general band and strip rolling mill is not all suitable for the foil preparation of this alloy, even if application 20 roller foil mills are prepared, the process of pilot process is also very loaded down with trivial details, require very strict to rolling mill practice, there is no application cold-rolling mill at present, to carry out thickness be report prepared by the TB8 titanium alloy foil of 0.08mm ~ 0.2mm; 2. heat treatment difficulty in cold-rolled process, selects common vacuum annealing, and cooling rate is too slow, and in cooling procedure, alloy aging is remarkable, and plasticity does not almost improve; If select the Cooling Mode of blowing argon gas, sheet alloy distortion obviously, in the operation of rolling in later stage, almost cannot leveling completely, the foil template obtained is uncontrollable.Due to above reason, domesticly at present there is no the report that thickness is the cold rolling foil preparation technology of TB8 titanium alloy of 0.08mm ~ 0.2mm.Although Chinese patent 201210505849.5 mentions the preparation technology of pack ply-rolling can be adopted to carry out preparation that thickness is the TB8 titanium alloy foil of 0.1mm, but the TB8 titanium alloy foil plate shape utilizing this pack ply-rolling technique to prepare is wayward, also cannot obtain effective guarantee with plate difference.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, provide that a kind of preparation technology is simple, technological design rationally, the preparation method of the TB8 titanium alloy foil of good quality of product.The TB8 titanium alloy foil surface smoothness adopting the method to prepare is high, and plate shape is smooth, little with plate deviation, is suitable for large-scale industrial production.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of preparation method of TB8 titanium alloy foil, and it is characterized in that, the method comprises the following steps:
Step one, be that the TB8 titanium alloy sheet of 0.3mm ~ 0.5mm carries out the first sealing annealing in process by thickness, detailed process is: loaded by TB8 titanium alloy sheet in annealing box, sealing annealing box, then the annealing box after sealing is put into annealing furnace, be be incubated 20min ~ 40min under the condition of 840 DEG C ~ 900 DEG C in temperature, remove annealing box after shrend cooling, obtain the TB8 titanium alloy sheet after the first sealing annealing in process;
Step 2, utilize cold-rolling mill in step one first sealing annealing in process after TB8 titanium alloy sheet be rolled, the second sealing annealing in process is carried out when the deflection of rolling reaches 25% ~ 30%, the detailed process of described second sealing annealing in process is: loaded by the TB8 titanium alloy sheet after rolling in annealing box, sealing annealing box, then the annealing box after sealing is put into annealing furnace, be be incubated 20min ~ 40min under the condition of 840 DEG C ~ 900 DEG C in temperature, after shrend cooling, remove annealing box;
Step 3, repetition step 2, finally obtain the TB8 titanium alloy foil that thickness is 0.08mm ~ 0.2mm.
The preparation method of above-mentioned a kind of TB8 titanium alloy foil, is characterized in that, the titanium alloy sheet of TB8 described in step one is the TB8 titanium alloy sheet of cold rolling state.
The preparation method of above-mentioned a kind of TB8 titanium alloy foil, is characterized in that, the length of the titanium alloy sheet of TB8 described in step one is 300mm ~ 900mm, and the width of described TB8 titanium alloy sheet is 100mm ~ 450mm.
The preparation method of above-mentioned a kind of TB8 titanium alloy foil, is characterized in that, cold-rolling mill described in step 2 is 4-roller cold rolling mill.
The preparation method of above-mentioned a kind of TB8 titanium alloy foil, is characterized in that, rolling described in step 2 is unidirection rolling.
The preparation method of above-mentioned a kind of TB8 titanium alloy foil, is characterized in that, the reduction in pass of rolling described in step 2 is 0.01mm ~ 0.02mm.
The preparation method of above-mentioned a kind of TB8 titanium alloy foil, is characterized in that, the annealing of sealing described in step one and step 2 box is all carry out in the vacuum plasma welding box of 0.01Pa ~ 0.1Pa in vacuum.
The preparation method of above-mentioned a kind of TB8 titanium alloy foil, is characterized in that, box of annealing described in step one and step 2 is the stainless steel box that wall thickness is 4mm ~ 6mm.
The present invention compared with prior art has the following advantages:
1, the present invention adopts annealing box to carry out sealing annealing to TB8 titanium alloy sheet, can ensure that TB8 titanium alloy plate cools fast when not oxidized, fully ensure that the plasticity after the annealing of TB8 titanium alloy.Adopt the processing method of annealing box seal protection, TB8 titanium alloy sheet in box is contacted naturally, there is no too large compression, prevent the adhesion of alloy sheets in annealing process.The present invention efficiently solves high tough metastable β Titanium-alloy foil cannot the problem of vacuum annealing, provides strong guarantee for instructing the steady production of titanium alloy foil.
2, the present invention adopts stainless steel to prepare annealing box, and can realize quick conductive, annealing box can be used in repeatedly sealing annealing, significantly cost-saving.
3, the present invention adopts the sealing annealing of annealing box and the method for cold rolling combination, effectively overcome resistance of deformation in high-strength TB8 titanium alloy foil preparation process large, easy to crack, cannot high annealing and to operation and the high problem of equipment requirement.Adopt method of the present invention, TB8 titanium alloy can be processed into thickness from cold-reduced sheet is 0.08mm ~ 0.2mm, and surface smoothness is high, strip shape quality is excellent, with the little TB8 titanium alloy foil of plate deviation.
4, adopt 4-roller cold rolling mill during rolling of the present invention, draught pressure is large, and effectively can overcome normal tape mill roll-force little, pass deformation is little, almost cannot the problem of rolling.
5, preparation technology of the present invention is simple, and technological design is reasonable, good quality of product.
Below in conjunction with embodiment, the present invention is described in further detail.
Detailed description of the invention
Embodiment 1
The preparation method of the present embodiment TB8 titanium alloy foil comprises the following steps:
Step one, be 0.5mm by thickness, length is 400mm, width is that the TB8 titanium alloy cold-reduced sheet of 400mm carries out the first sealing annealing in process, detailed process is: loaded by TB8 titanium alloy sheet in annealing box, be box sealing of annealing in the vacuum plasma welding box of 0.05Pa again in vacuum, then the annealing box after sealing is put into annealing furnace, be be incubated 30min under the condition of 850 DEG C in temperature, utilize cutting machine to be removed by annealing box after shrend cooling (to reuse for enabling annealing box, only can cut annealing box one end), obtain the TB8 titanium alloy sheet after the first sealing annealing in process, the stainless steel box of described annealing box to be wall thickness be 4mm,
Step 2, 550mm 4-roller cold rolling mill is utilized to carry out unidirection rolling to the TB8 titanium alloy sheet after the first sealing annealing in process in step one, the reduction in pass of controlled rolling is 0.01mm, when the deflection of rolling reaches 30%, carry out the second sealing annealing in process, detailed process is: loaded by the TB8 titanium alloy sheet after rolling in annealing box, be box sealing of annealing in the vacuum plasma welding box of 0.05Pa again in vacuum, then the annealing box after sealing is put into annealing furnace, be be incubated 30min under the condition of 850 DEG C in temperature, cutting machine is utilized to be removed by annealing box after shrend cooling, obtain the TB8 titanium alloy sheet that thickness is 0.35mm,
Step 3, 550mm 4-roller cold rolling mill is utilized to carry out unidirection rolling to the TB8 titanium alloy sheet that thickness in step 2 is 0.35mm, the reduction in pass of controlled rolling is 0.01mm, when the deflection of rolling reaches 25.7%, again carry out the second sealing annealing in process, detailed process is: loaded by the TB8 titanium alloy sheet after rolling in annealing box, be box sealing of annealing in the vacuum plasma welding box of 0.05Pa again in vacuum, then the annealing box after sealing is put into annealing furnace, be be incubated 30min under the condition of 850 DEG C in temperature, cutting machine is utilized to be removed by annealing box after shrend cooling, obtain the TB8 titanium alloy sheet that thickness is 0.26mm,
Step 4, 550mm 4-roller cold rolling mill is utilized to carry out unidirection rolling to the TB8 titanium alloy sheet that thickness in step 3 is 0.26mm, the reduction in pass of controlled rolling is 0.01mm, when the deflection of rolling reaches 26.9%, third time carries out the second sealing annealing in process, detailed process is: loaded by the TB8 titanium alloy sheet after rolling in annealing box, be box sealing of annealing in the vacuum plasma welding box of 0.05Pa again in vacuum, then the annealing box after sealing is put into annealing furnace, be be incubated 30min under the condition of 850 DEG C in temperature, cutting machine is utilized to be removed by annealing box after shrend cooling, obtain the TB8 titanium alloy sheet that thickness is 0.19mm,
Step 5, utilize 550mm 4-roller cold rolling mill to carry out unidirection rolling to the TB8 titanium alloy sheet that thickness in step 4 is 0.19mm, the reduction in pass of controlled rolling is 0.01mm, and obtaining thickness is 0.16mm, and width is the TB8 titanium alloy foil of 400mm.
Adopt that the TB8 titanium alloy foil surface smoothness prepared of the present embodiment is high, strip shape quality is excellent, little with plate deviation.
Embodiment 2
The preparation method of the present embodiment TB8 titanium alloy foil comprises the following steps:
Step one, be 0.3mm by thickness, length is 500mm, width is that the TB8 titanium alloy cold-reduced sheet of 350mm carries out the first sealing annealing in process, detailed process is: loaded by TB8 titanium alloy sheet in annealing box, be box sealing of annealing in the vacuum plasma welding box of 0.1Pa again in vacuum, then the annealing box after sealing being put into annealing furnace, is be incubated 20min under the condition of 900 DEG C in temperature, remove annealing box after shrend cooling, obtain the TB8 titanium alloy sheet after the first sealing annealing in process; The stainless steel box of described annealing box to be wall thickness be 5mm;
Step 2, 550mm 4-roller cold rolling mill is utilized to carry out unidirection rolling to the TB8 titanium alloy sheet after the first sealing annealing in process in step one, the reduction in pass of controlled rolling is 0.01mm, when the deflection of rolling reaches 30%, carry out the second sealing annealing in process, detailed process is: loaded by the TB8 titanium alloy sheet after rolling in annealing box, be box sealing of annealing in the vacuum plasma welding box of 0.1Pa again in vacuum, then the annealing box after sealing is put into annealing furnace, be be incubated 20min under the condition of 900 DEG C in temperature, cutting machine is utilized to be removed by annealing box after shrend cooling, to obtain thickness be the thickness of TB8 titanium alloy sheet is 0.21mm,
Step 3, 550mm 4-roller cold rolling mill is utilized to carry out unidirection rolling to the TB8 titanium alloy sheet that thickness in step 2 is 0.21mm, the reduction in pass of controlled rolling is 0.01mm, when the deflection of rolling reaches 28.6%, again carry out the second sealing annealing in process, detailed process is: loaded by the TB8 titanium alloy sheet after rolling in annealing box, be box sealing of annealing in the vacuum plasma welding box of 0.1Pa again in vacuum, then the annealing box after sealing is put into annealing furnace, be be incubated 20min under the condition of 900 DEG C in temperature, cutting machine is utilized to be removed by annealing box after shrend cooling, obtain the TB8 titanium alloy sheet that thickness is 0.15mm,
Step 4, 550mm 4-roller cold rolling mill is utilized to carry out unidirection rolling to the TB8 titanium alloy sheet that thickness in step 3 is 0.15mm, the reduction in pass of controlled rolling is 0.01mm, when the deflection of rolling reaches 26.7%, third time carries out the second sealing annealing in process, detailed process is: loaded by the TB8 titanium alloy sheet after rolling in annealing box, be box sealing of annealing in the vacuum plasma welding box of 0.1Pa again in vacuum, then the annealing box after sealing is put into annealing furnace, be be incubated 20min under the condition of 900 DEG C in temperature, cutting machine is utilized to be removed by annealing box after shrend cooling, obtain the TB8 titanium alloy sheet that thickness is 0.11mm,
Step 5, utilize 550mm 4-roller cold rolling mill to carry out unidirection rolling to the TB8 titanium alloy sheet that thickness in step 4 is 0.11mm, the reduction in pass of controlled rolling is 0.01mm, and obtaining thickness is 0.08mm, and width is the TB8 titanium alloy foil of 350mm.
Adopt that the TB8 titanium alloy foil surface smoothness prepared of the present embodiment is high, strip shape quality is excellent, little with plate deviation.
Embodiment 3
The preparation method of the present embodiment TB8 titanium alloy foil comprises the following steps:
Step one, be 0.4mm by thickness, length is 900mm, width is that the TB8 titanium alloy cold-reduced sheet of 450mm carries out the first sealing annealing in process, detailed process is: loaded by TB8 titanium alloy sheet in annealing box, be box sealing of annealing in the vacuum plasma welding box of 0.08Pa again in vacuum, then the annealing box after sealing being put into annealing furnace, is be incubated 35min under the condition of 880 DEG C in temperature, remove annealing box after shrend cooling, obtain the TB8 titanium alloy sheet after the first sealing annealing in process; The stainless steel box of described annealing box to be wall thickness be 6mm;
Step 2, 550mm 4-roller cold rolling mill is utilized to carry out unidirection rolling to the TB8 titanium alloy sheet after the first sealing annealing in process in step one, the reduction in pass of controlled rolling is 0.02mm, when the deflection of rolling reaches 25%, carry out the second sealing annealing in process, detailed process is: loaded by the TB8 titanium alloy sheet after rolling in annealing box, be box sealing of annealing in the vacuum plasma welding box of 0.08Pa again in vacuum, then the annealing box after sealing is put into annealing furnace, be be incubated 35min under the condition of 880 DEG C in temperature, cutting machine is utilized to be removed by annealing box after shrend cooling, obtain the TB8 titanium alloy sheet that thickness is 0.3mm,
Step 3, 550mm 4-roller cold rolling mill is utilized to carry out unidirection rolling to the TB8 titanium alloy sheet that thickness in step 2 is 0.3mm, the reduction in pass of controlled rolling is 0.02mm, when the deflection of rolling reaches 26.7%, again carry out the second sealing annealing in process, detailed process is: loaded by the TB8 titanium alloy sheet after rolling in annealing box, be box sealing of annealing in the vacuum plasma welding box of 0.08Pa again in vacuum, then the annealing box after sealing is put into annealing furnace, be be incubated 35min under the condition of 880 DEG C in temperature, cutting machine is utilized to be removed by annealing box after shrend cooling, obtain the TB8 titanium alloy sheet that thickness is 0.22mm,
Step 4, utilize 550mm 4-roller cold rolling mill to carry out unidirection rolling to the TB8 titanium alloy sheet that thickness in step 3 is 0.22mm, the reduction in pass of controlled rolling is 0.02mm, and obtaining thickness is 0.2mm, and width is the TB8 titanium alloy foil of 450mm.
Adopt that the TB8 titanium alloy foil surface smoothness prepared of the present embodiment is high, strip shape quality is excellent, little with plate deviation.
Embodiment 4
The preparation method of the present embodiment TB8 titanium alloy foil comprises the following steps:
Step one, be 0.5mm by thickness, length is 300mm, width is that the TB8 titanium alloy cold-reduced sheet of 100mm carries out the first sealing annealing in process, detailed process is: be sealed in by TB8 titanium alloy sheet in annealing box in the vacuum plasma welding box of 0.01Pa in vacuum, then the annealing box after sealing is put into annealing furnace, be be incubated 40min under the condition of 840 DEG C in temperature, remove annealing box after shrend cooling, obtain the TB8 titanium alloy sheet after the first sealing annealing in process; The stainless steel box of described annealing box to be wall thickness be 4mm;
Step 2, 550mm 4-roller cold rolling mill is utilized to carry out unidirection rolling to the TB8 titanium alloy sheet after the first sealing annealing in process in step one, the reduction in pass of controlled rolling is 0.01mm, when the deflection of rolling reaches 30%, carry out the second sealing annealing in process, detailed process is: loaded by the TB8 titanium alloy sheet after rolling in annealing box, be box sealing of annealing in the vacuum plasma welding box of 0.1Pa again in vacuum, then the annealing box after sealing is put into annealing furnace, be be incubated 40min under the condition of 840 DEG C in temperature, cutting machine is utilized to be removed by annealing box after shrend cooling, obtain the TB8 titanium alloy sheet that thickness is 0.35mm,
Step 3, 550mm 4-roller cold rolling mill is utilized to carry out unidirection rolling to the TB8 titanium alloy sheet that thickness in step 2 is 0.35mm, the reduction in pass of controlled rolling is 0.01mm, when the deflection of rolling reaches 28.6%, again carry out the second sealing annealing in process, detailed process is: loaded by the TB8 titanium alloy sheet after rolling in annealing box, be box sealing of annealing in the vacuum plasma welding box of 0.1Pa again in vacuum, then the annealing box after sealing is put into annealing furnace, be be incubated 40min under the condition of 840 DEG C in temperature, cutting machine is utilized to be removed by annealing box after shrend cooling, obtain the TB8 titanium alloy sheet that thickness is 0.25mm,
Step 4, utilize 550mm 4-roller cold rolling mill to carry out unidirection rolling to the TB8 titanium alloy sheet that thickness in step 3 is 0.25mm, the reduction in pass of controlled rolling is 0.01mm, and obtaining thickness is 0.2mm, and width is the TB8 titanium alloy foil of 100mm.
Adopt that the TB8 titanium alloy foil surface smoothness prepared of the present embodiment is high, strip shape quality is excellent, little with plate deviation.
The above is only preferred embodiment of the present invention, not imposes any restrictions the present invention.Every above embodiment is done according to invention technical spirit any simple modification, change and equivalence change, all still belong in the protection domain of technical solution of the present invention.
Claims (6)
1. a preparation method for TB8 titanium alloy foil, is characterized in that, the method comprises the following steps:
Step one, be that the TB8 titanium alloy sheet of 0.3mm ~ 0.5mm carries out the first sealing annealing in process by thickness, detailed process is: loaded by TB8 titanium alloy sheet in annealing box, sealing annealing box, then the annealing box after sealing is put into annealing furnace, be be incubated 20min ~ 40min under the condition of 840 DEG C ~ 900 DEG C in temperature, remove annealing box after shrend cooling, obtain the TB8 titanium alloy sheet after the first sealing annealing in process; The stainless steel box of described annealing box to be wall thickness be 4mm ~ 6mm, described sealing annealing box is carry out in the vacuum plasma welding box of 0.01Pa ~ 0.1Pa in vacuum;
Step 2, utilize cold-rolling mill in step one first sealing annealing in process after TB8 titanium alloy sheet be rolled, the second sealing annealing in process is carried out when the deflection of rolling reaches 25% ~ 30%, the detailed process of described second sealing annealing in process is: loaded by the TB8 titanium alloy sheet after rolling in annealing box, sealing annealing box, then the annealing box after sealing is put into annealing furnace, be be incubated 20min ~ 40min under the condition of 840 DEG C ~ 900 DEG C in temperature, after shrend cooling, remove annealing box; The stainless steel box of described annealing box to be wall thickness be 4mm ~ 6mm, described sealing annealing box is carry out in the vacuum plasma welding box of 0.01Pa ~ 0.1Pa in vacuum;
Step 3, repetition step 2, finally obtain the TB8 titanium alloy foil that thickness is 0.08mm ~ 0.2mm.
2. the preparation method of a kind of TB8 titanium alloy foil according to claim 1, is characterized in that, the titanium alloy sheet of TB8 described in step one is the TB8 titanium alloy sheet of cold rolling state.
3. the preparation method of a kind of TB8 titanium alloy foil according to claim 1, is characterized in that, the length of the titanium alloy sheet of TB8 described in step one is 300mm ~ 900mm, and the width of described TB8 titanium alloy sheet is 100mm ~ 450mm.
4. the preparation method of a kind of TB8 titanium alloy foil according to claim 1, is characterized in that, cold-rolling mill described in step 2 is 4-roller cold rolling mill.
5. the preparation method of a kind of TB8 titanium alloy foil according to claim 1, is characterized in that, rolling described in step 2 is unidirection rolling.
6. the preparation method of a kind of TB8 titanium alloy foil according to claim 1, is characterized in that, the reduction in pass of rolling described in step 2 is 0.01mm ~ 0.02mm.
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| CN108906890B (en) * | 2018-06-29 | 2019-08-06 | 西北有色金属研究院 | A kind of cold-rolling method of beta-titanium alloy thin plate |
| CN108929962A (en) * | 2018-08-10 | 2018-12-04 | 宝鸡市博信金属材料有限公司 | The low modulus high-precision Ultra-fine Grained foil preparation method of new type beta type titanium alloy |
| CN113667818B (en) * | 2021-08-03 | 2022-05-17 | 西北有色金属研究院 | High-precision medical titanium alloy foil continuous annealing device and processing method thereof |
| CN114540606B (en) * | 2022-03-09 | 2023-08-11 | 西部金属材料股份有限公司 | Preparation method of high-hardness titanium alloy sheet and foil |
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