CN112718910A - Manufacturing method of large-caliber TC4 titanium alloy thick-wall pipe - Google Patents
Manufacturing method of large-caliber TC4 titanium alloy thick-wall pipe Download PDFInfo
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- CN112718910A CN112718910A CN202011463155.0A CN202011463155A CN112718910A CN 112718910 A CN112718910 A CN 112718910A CN 202011463155 A CN202011463155 A CN 202011463155A CN 112718910 A CN112718910 A CN 112718910A
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- pipe
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000005096 rolling process Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000004513 sizing Methods 0.000 claims description 9
- 238000005242 forging Methods 0.000 claims description 8
- 238000009785 tube rolling Methods 0.000 claims description 6
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims description 3
- 244000046052 Phaseolus vulgaris Species 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910000756 V alloy Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000001953 recrystallisation Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a method for manufacturing a large-caliber TC4 titanium alloy thick-wall pipe, and the large-caliber TC4 titanium alloy thick-wall pipe manufactured by the method can be used in the industries of metallurgy, chemical engineering, aerospace, electronics and the like.
Description
Technical Field
The invention relates to the technical field of pipe processing, in particular to a method for manufacturing a large-caliber TC4 titanium alloy thick-wall pipe.
Background
The TC4 titanium alloy has a series of special purposes as a high-strength and high-specific-strength metal material. The processing method of TC4 large-caliber thick-wall pipe currently has two types: one is to use TC4 thick plate, to be molded by a plate bending machine or an oil press, then to be welded into a round tube, to be made into a seamed tube by rounding and straightening; the second main method is to adopt TC4 bar to manufacture seamless thick-wall pipe through the working procedures of drilling, boring and the like; and the third is to manufacture the seamless thick-wall pipe by the method of one-time cross rolling perforation, two-time cross rolling perforation and hot rolling. However, the large-caliber thick-wall pipe manufactured by the three methods has low yield and high cost.
Disclosure of Invention
The invention provides a method for manufacturing a large-diameter TC4 titanium alloy thick-wall pipe, which can effectively solve the technical problems in the background.
In order to achieve the above purpose, the invention provides the following technical scheme:
a method for manufacturing a large-caliber TC4 titanium alloy thick-wall pipe comprises the following manufacturing steps:
A. selecting high-quality sponge titanium, Al-V alloy, Al beans and other raw materials, and calculating the quantity and weight of the prepared alloy; melting to produce a cast ingot with a certain proportion;
B. forging, forging into a square blank, blanking, carrying out surface grinding treatment, carrying out three-heading and three-drawing, forging into a TC4 bar, blanking and turning to obtain a smooth bar;
C. b, heating the bar prepared in the step B in an electric furnace, preserving heat, and then performing cross rolling perforation to prepare a TC4 primary perforated pipe blank;
D. c, performing internal and external surface treatment on the primary perforated pipe blank prepared in the step C, heating and insulating the pipe blank in an electric furnace, and then performing cross rolling perforation to prepare a TC4 secondary perforated pipe blank;
E. the residual temperature of the TC4 secondary perforated pipe blank is sent into a sizing and reducing mill for sizing and reducing to obtain a TC4 rolled pipe blank with a certain specification;
F. c, treating the inner surface and the outer surface of the TC4 rolled tube blank prepared in the step E, wherein the single side is 0.2-0.4 mm, so as to remove a surface air suction layer and surface defects;
G. rolling the TC4 rolled tube blank processed in the step F by using a tube rolling mill, and carrying out induction on-line heating on the TC4 rolled tube blank at a feed inlet of the tube rolling mill, wherein the feeding amount during rolling is controlled to be 2-3 mm, the number of times of a rack is controlled to be 30-40 times/min, and a tube with a corresponding specification is obtained after rolling;
H. d, performing oil removal treatment and recrystallization annealing treatment on the pipe obtained in the step G to obtain a finished pipe; then straightening with temperature;
I. and D, deburring and polishing or machining the finished pipe prepared in the step H, cutting the head and the tail, sizing and testing the water pressure to prepare the large-caliber TC4 titanium alloy thick-wall seamless pipe.
Preferably, the billet forged in the step B has the size of (100-800) × L1, and is blanked to obtain a TC4 bar material with the size of (100-800) × (100-600) and the size of the TC4 bar material of (phi 114-720) × L2.
Preferably, the heating temperature in the step C is 920-1150 ℃, and the heat preservation time is 2-8 hours.
Preferably, the heating temperature in the step D is 880-1100 ℃, and the heat preservation time is 30-60 minutes.
Preferably, the heating temperature in step G is 650-800 ℃.
The invention has the beneficial effects that:
the large-caliber TC4 titanium alloy thick-wall pipe manufactured by the method has high yield and low cost, the manufactured large-caliber TC4 titanium alloy thick-wall pipe has excellent mechanical property, the tensile strength is more than or equal to 895MPa, the yield strength is more than or equal to 828MPa, the elongation is more than or equal to 10%, the quality of the inner surface and the quality of the outer surface are both good, and the quality meets the requirement of GB/T3624 or ASME B861 standard, and the large-caliber TC4 titanium alloy thick-wall pipe manufactured by the method can be used in the industries of metallurgy, chemical industry, aerospace, electronics and the like.
Detailed Description
The following detailed description of embodiments of the invention, but the invention can be practiced in many different ways, as defined and covered by the claims:
the invention provides a method for manufacturing a large-diameter TC4 titanium alloy thick-wall pipe, which is characterized by comprising the following steps of: the method comprises the following manufacturing steps:
A. selecting high-quality sponge titanium, Al-V alloy, Al beans and other raw materials, and calculating the quantity and weight of the prepared alloy; and melting to produce a cast ingot with a certain proportion.
B. Forging the blank into a square billet with the size of (100-800) × L1, blanking, grinding the surface of the billet after blanking to obtain a square billet with the size of (100-800) × (100-600), performing three-heading three-drawing, performing die forging to obtain a TC4 bar with the size of (phi 114-phi 720) × L2, blanking and lathing to obtain the smooth bar.
C. And C, heating the bar material prepared in the step B in an electric furnace at the temperature of 920-1150 ℃, preserving heat for 2-8 hours, and then performing cross rolling perforation to prepare a TC4 primary perforated pipe blank.
D. And C, performing inner and outer surface treatment on the primary perforated pipe blank prepared in the step C, heating the pipe blank in an electric furnace at 880-1100 ℃, preserving heat for 30-60 minutes, and then performing cross rolling perforation to prepare the TC4 secondary perforated pipe blank.
E. And (3) performing secondary piercing on the tube blank by using TC4, and sending the tube blank into a sizing and reducing machine for sizing and reducing to obtain a TC4 rolled tube blank with a certain specification.
F. And E, treating the inner surface and the outer surface of the TC4 rolled pipe blank prepared in the step E, wherein the single side is 0.2-0.4 mm, so as to remove a surface air suction layer and surface defects.
G. And D, rolling the TC4 rolled tube blank processed in the step F by using a tube rolling mill, carrying out induction on-line heating on the TC4 rolled tube blank at the feeding port of the tube rolling mill, wherein the heating temperature is 650-800 ℃, the feeding amount during rolling is controlled to be 2-3 mm, the number of times of the stand is controlled to be 30-40 times/minute, and obtaining the tube with the corresponding specification after rolling.
H. D, performing oil removal treatment and recrystallization annealing treatment on the pipe obtained in the step G to obtain a finished pipe; then straightening with temperature.
I. And D, deburring and polishing or machining the finished pipe prepared in the step H, cutting the head and the tail, sizing and testing the water pressure to prepare the large-caliber TC4 titanium alloy thick-wall seamless pipe.
The invention has been described in an illustrative manner, and it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description, since such modifications are intended to be included within the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A method for manufacturing a large-diameter TC4 titanium alloy thick-wall pipe is characterized by comprising the following steps: the method comprises the following manufacturing steps:
A. selecting high-quality sponge titanium, Al-V alloy, Al beans and other raw materials, and calculating the quantity and weight of the prepared alloy; melting to produce a cast ingot with a certain proportion;
B. forging, forging into a square blank, blanking, carrying out surface grinding treatment, carrying out three-heading and three-drawing, forging into a TC4 bar, blanking and turning to obtain a smooth bar;
C. b, heating the bar prepared in the step B in an electric furnace, preserving heat, and then performing cross rolling perforation to prepare a TC4 primary perforated pipe blank;
D. c, performing internal and external surface treatment on the primary perforated pipe blank prepared in the step C, heating and insulating the pipe blank in an electric furnace, and then performing cross rolling perforation to prepare a TC4 secondary perforated pipe blank;
E. the residual temperature of the TC4 secondary perforated pipe blank is sent into a sizing and reducing mill for sizing and reducing to obtain a TC4 rolled pipe blank with a certain specification;
F. c, treating the inner surface and the outer surface of the TC4 rolled tube blank prepared in the step E, wherein the single side is 0.2-0.4 mm, so as to remove a surface air suction layer and surface defects;
G. rolling the TC4 rolled tube blank processed in the step F by using a tube rolling mill, and carrying out induction on-line heating on the TC4 rolled tube blank at a feed inlet of the tube rolling mill, wherein the feeding amount during rolling is controlled to be 2-3 mm, the number of times of a rack is controlled to be 30-40 times/min, and a tube with a corresponding specification is obtained after rolling;
H. d, performing oil removal treatment and recrystallization annealing treatment on the pipe obtained in the step G to obtain a finished pipe; then straightening with temperature;
I. and D, deburring and polishing or machining the finished pipe prepared in the step H, cutting the head and the tail, sizing and testing the water pressure to prepare the large-caliber TC4 titanium alloy thick-wall seamless pipe.
2. The method for manufacturing the large-caliber TC4 titanium alloy thick-wall pipe according to claim 1, wherein the method comprises the following steps: according to the size of the square billet forged in the step B, the square billet is (100-800) × L1, blanking is carried out, the blanking size is (100-800) × (100-600), and the size of the TC4 bar is (phi 114-phi 720) × L2, namely the TC4 bar.
3. The method for manufacturing the large-caliber TC4 titanium alloy thick-wall pipe according to claim 1, wherein the method comprises the following steps: the heating temperature in the step C is 920-1150 ℃, and the heat preservation time is 2-8 hours.
4. The method for manufacturing the large-caliber TC4 titanium alloy thick-wall pipe according to claim 1, wherein the method comprises the following steps: and D, heating at 880-1100 ℃ for 30-60 minutes.
5. The method for manufacturing the large-caliber TC4 titanium alloy thick-wall pipe according to claim 1, wherein the method comprises the following steps: the heating temperature in step G was 650-800 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011463155.0A CN112718910A (en) | 2020-12-08 | 2020-12-08 | Manufacturing method of large-caliber TC4 titanium alloy thick-wall pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011463155.0A CN112718910A (en) | 2020-12-08 | 2020-12-08 | Manufacturing method of large-caliber TC4 titanium alloy thick-wall pipe |
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| CN112718910A true CN112718910A (en) | 2021-04-30 |
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| CN202011463155.0A Pending CN112718910A (en) | 2020-12-08 | 2020-12-08 | Manufacturing method of large-caliber TC4 titanium alloy thick-wall pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113695417A (en) * | 2021-09-06 | 2021-11-26 | 江苏宇钛新材料有限公司 | Preparation method of large-caliber high-performance titanium alloy pipe and product thereof |
| CN114043176A (en) * | 2021-11-30 | 2022-02-15 | 安徽宝泰特种材料有限公司 | Method for manufacturing large-caliber magnesium and magnesium alloy seamless pipe |
| CN114260314A (en) * | 2021-12-21 | 2022-04-01 | 安徽宝泰特种材料有限公司 | Method for manufacturing titanium and titanium alloy seamless tube blank with diameter-thickness ratio of more than 20 |
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| CN106493187A (en) * | 2016-10-27 | 2017-03-15 | 南京宝泰特种材料股份有限公司 | A kind of heavy caliber thick wall titanium and its low-cost manufacture method of alloy seamless tubing |
| CN107052076A (en) * | 2016-11-28 | 2017-08-18 | 安徽宝泰特种材料有限公司 | A kind of method of chuck plug hot rolling heavy caliber titanium or titanium alloy thin-wall seamless pipe |
| CN107570552A (en) * | 2017-09-07 | 2018-01-12 | 鑫鹏源智能装备集团有限公司 | A kind of production method of titanium alloy TC 4 strand hot seamless tube |
| CN109622659A (en) * | 2018-12-17 | 2019-04-16 | 安徽宝泰特种材料有限公司 | A kind of manufacturing method of heavy caliber TC4 titanium alloy thick-wall seamless material |
| CN111744960A (en) * | 2020-06-01 | 2020-10-09 | 张家港海岸钛业有限公司 | Titanium alloy thin-walled tube processing method |
-
2020
- 2020-12-08 CN CN202011463155.0A patent/CN112718910A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493187A (en) * | 2016-10-27 | 2017-03-15 | 南京宝泰特种材料股份有限公司 | A kind of heavy caliber thick wall titanium and its low-cost manufacture method of alloy seamless tubing |
| CN107052076A (en) * | 2016-11-28 | 2017-08-18 | 安徽宝泰特种材料有限公司 | A kind of method of chuck plug hot rolling heavy caliber titanium or titanium alloy thin-wall seamless pipe |
| CN107570552A (en) * | 2017-09-07 | 2018-01-12 | 鑫鹏源智能装备集团有限公司 | A kind of production method of titanium alloy TC 4 strand hot seamless tube |
| CN109622659A (en) * | 2018-12-17 | 2019-04-16 | 安徽宝泰特种材料有限公司 | A kind of manufacturing method of heavy caliber TC4 titanium alloy thick-wall seamless material |
| CN111744960A (en) * | 2020-06-01 | 2020-10-09 | 张家港海岸钛业有限公司 | Titanium alloy thin-walled tube processing method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113695417A (en) * | 2021-09-06 | 2021-11-26 | 江苏宇钛新材料有限公司 | Preparation method of large-caliber high-performance titanium alloy pipe and product thereof |
| CN113695417B (en) * | 2021-09-06 | 2023-11-03 | 江苏宇钛新材料有限公司 | Preparation method of large-caliber high-performance titanium alloy pipe and product thereof |
| CN114043176A (en) * | 2021-11-30 | 2022-02-15 | 安徽宝泰特种材料有限公司 | Method for manufacturing large-caliber magnesium and magnesium alloy seamless pipe |
| CN114260314A (en) * | 2021-12-21 | 2022-04-01 | 安徽宝泰特种材料有限公司 | Method for manufacturing titanium and titanium alloy seamless tube blank with diameter-thickness ratio of more than 20 |
| CN114260314B (en) * | 2021-12-21 | 2023-08-25 | 安徽宝泰特种材料有限公司 | Manufacturing method of titanium alloy seamless tube blank with diameter-thickness ratio larger than 20 |
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Application publication date: 20210430 |