CN102909237A - Preparation method of TA18 thick-wall tube - Google Patents
Preparation method of TA18 thick-wall tube Download PDFInfo
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- CN102909237A CN102909237A CN2012104776510A CN201210477651A CN102909237A CN 102909237 A CN102909237 A CN 102909237A CN 2012104776510 A CN2012104776510 A CN 2012104776510A CN 201210477651 A CN201210477651 A CN 201210477651A CN 102909237 A CN102909237 A CN 102909237A
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Abstract
The invention relates to a preparation method of a TA18 thick-wall tube. The technical process of the preparation method comprises the steps of ingot casting, forging, tube blank preparation, surface processing, rolling and straightening. The preparation method is characterized in that a two-roller cold rolling manner is adopted for rolling. The preparation method has the beneficial effects that firstly, through the two-roller cold rolling production manner, a tube blank can be directly made into a finished product after being subjected to two-roller cold rolling for once to three times; secondly, the purpose of improving the surface quality of the tube is achieved through a manner of boring the inner surface of the tube and polishing the outer surface of the tube; and thirdly, the straightness of the tube is ensured through a hot straightening manner. The preparation method can be used for shortening the production period of the tube greatly, impropving the surface quality of the tube, and guaranteeing the straightness of the tube.
Description
Technical field
The present invention relates to the nonferrous materials technical field, particularly relate to the preparation method that a kind of petroleum industry is used the TA18 thick-wall tube.
Background technology
The alpha and beta type titan alloy of TA18 titanium alloy a kind of nearly α that to be the U.S. develop in late 1960s, nominal composition is Ti-3Al-2.5V.This alloy not only has good room temperature, mechanical behavior under high temperature and corrosion resisting property, and has excellent cold and hot working processing performance, formability and welding performance.The combination property of this alloy excellence is widely used it in aircraft engine hydraulic pressure and fuel piping system, and in oil, medical treatment and Leisure Sport field a large amount of uses is arranged also.
Domesticly begin to carry out the Ti-3Al-2.5V alloy research mid-term in 20 century 70s, possessed the technology of comparative maturity at aspects such as the chemical composition of material, Properties Control at present, and had certain production capacity.But generally adopt mode cold rolling by two rollers and that three rollers are cold rolling to produce this alloy pipe, although cold pilgered pipe technique has unique process characteristic and the mode of production flexibly, have the irreplaceable status of other tube-making processes at production super-large diameter, special thin-walled, great surface quality and the high-strength aspects such as moulding seamless pipe of hanging down, but have the shortcoming of production cycle length, surface quality heterogeneity and product linearity Customers ' Legal Right with respect to the above-mentioned mode of production of production TA18 thick-walled pipe.
Petroleum industry requires its surfaces externally and internally quality homogeneous with TA18 thick-walled pipe (φ 35～48 * 2.5～5), especially linearity requires high (0.3～1mm/m), mechanical property satisfies common standard and requires to get final product (tensile strength 〉=621MPa, yield strength 〉=517MPa, percentage elongation 〉=15%).
Several patented technologies that the below provides all are to prepare thick-wall tube, their exist or technique loaded down with trivial details, or the defective such as technological requirement height.
Chinese patent CN 1718798 A disclose Ti alloy with high performance pipe prescription and technique, the prescription of the method titanium alloy tube, Al, 2.5-3.5wt%, V, 2.0-3.0wt%'s, surplus is Ti, the method of titanium or titanium alloy pipe is made in cold working, and 0.5-2 hour processing and carry out finish rolling after annealing, rolling temperature by 300 ℃ to 400 ℃ is annealed in order to eliminate stress in 0.5-1 hour scope through 350 ℃ to 600 ℃ temperature ranges.The prescription of this invention is fairly simple and with dependable performance under the processing conditions of the present invention, secondary is stepped back all only needs lower treatment temperature, and energy consumption is low.And high with the precision of finish-rolling process product.Its tension proof strength is for larger, and its elastic deformability is more than 15%.There is not clear and definite concrete rolling mill practice in this patent, surface treatment method and thermal straightening technology.
Chinese patent CN 101451631 A disclose special titanium alloy tube for petroleum detection and preparation technology thereof, the invention belongs to the special-purpose tubing of petroleum detection in the oil exploration equipment technology field.It is to make tubing with the titanium alloy that interpolation metallic aluminium and vanadium metal in the Titanium are made.This invention titanium alloy is to make in accordance with the following steps titanium alloy pipe: (1) is rolling: at first original blank is processed into pipe by extruder extruding or roll piercing, then fall the burr crackle on surface by the abrasive machine reconditioning, by the deep hole lathe crackle of endoporus is removed, by the roll forming more than 2 times; (2) in step (1) deflection greater than 10% time annealing, reconditioning, annealing temperature 560-640 degree is incubated 2-4 hour, room temperature is come out of the stove.Advantage of the present invention is that titanium alloy pipe is nonmagnetic, corrosion-resistant, high pressure resistant and intensity is high, has prolonged service life, the complete design requirement that the titanium alloy tube by the present invention processing can be higher.There are not clear and definite concrete rolling mill practice and thermal straightening technology in this patent.
Chinese patent CN 102389900 A disclose a kind of high accuracy processing method of TA18 aviation titanium pipe, and the method is: one, the TA18 pipe is carried out straightening processing; Two, evenly smear chlorinated paraffin-52 first mandrel rolling of packing at tube blank inner wall and become the semi-finished product tubing of required size; Three, the first plug in the semi-finished product tubing is taken out, smear the tubing that second mandrel rolling of packing into behind the chlorinated paraffin-52 becomes required size; Four, repeating step is 3 1～8 times, obtains TA18 aviation titanium pipe.This technical matters is loaded down with trivial details, especially rolling mill practice.
Chinese patent CN 101837386 A disclose a kind of manufacture method of titanium alloy thick-wall pipe, the method is a kind of manufacture method of titanium alloy thick-wall pipe, be applicable to the hot-stretch manufacturing of Ti-6Al-4V titanium alloy thick-wall pipe, its characteristics include following steps: (1) blank is prepared; (2) heating of pipe blank; (3) hot-stretch; (4) heat strips off the skin; (5) thermal straightening; (6) grind off surface film oxide; (7) scale blanking; (8) polishing obtains qualified product.The present invention adopts new heat stretching process to produce the Ti-6Al-4V titanium alloy thick-wall pipe, has overcome the shortcoming of conventional borehole method, has efficient height, quality is good, lumber recovery is high characteristics.
Chinese patent CN 102240890 A disclose a kind of manufacture method of thick-walled titanium tube, and the method at first prepares ingot casting; To be squeezed into pipe, again pickling after ingot casting forging, the processing; Pipe after the pickling is rolled, every rollingly completely once the pipe after rolling carried out oil removal treatment and recrystallization annealing successively and process; Again the pipe after rolling is carried out once the rolling finished product tubing that obtains; The oxide skin on inside and outside surface is removed in pickling after at last finished product tubing being carried out annealing in process, obtains the Gr.3 thick-walled titanium tube.There are not clear and definite concrete surface treatment method and thermal straightening technology in this patent.
Summary of the invention
The object of the invention is to overcome the defective of above-mentioned prior art, but a kind of surface quality of Effective Raise product is provided, guarantee the linearity of product, shorten the preparation method of the TA18 thick-wall tube of production cycle.
The present invention takes following technical proposals:
A kind of preparation method of TA18 thick-wall tube, its technical process comprise ingot casting casting, forging, pipe preparation, surface treatment, rolling and and aligning, it is characterized in that: the cold rolling mode of described rolling employing two rollers.
In the above-mentioned cold-rolled process, controlled rolling speed is 10～60 beats/mins, and rolling feed is 2～8mm, and each pass deformation is 20～50%, and general working rate is 30～70%.
In the above-mentioned cold-rolled process, cogging 1-3 passage directly is cold-pressed into finished product.
Pressing method or roll piercing method are adopted in above-mentioned pipe preparation.
Extrusion temperature is 700～850 ℃ in the described pressing method, is incubated 1～3 hour.
Described roll piercing method pipe roll piercing heating in medium frequency temperature is 750～950 ℃, is incubated 10～30 minutes.
Internal surface of bloom adopts bore hole to process during above-mentioned surface treatment, bore hole amount 0.2～1.5mm, and outer surface adopts the mode of machine glazed finish, grinding and polishing amount 0.1～0.3mm.
Above-mentioned aligning adopts thermal straightening, and heating-up temperature is 500～600 ℃.
Before cold rolling and after finished product TA18 thick-wall tube obtains, all will carry out vacuum annealing heat treatment, annealing temperature is 600～800 ℃, is incubated 1～2 hour, and vacuum is not less than 1 * 10-1Pa.
Technical solution of the present invention compared with prior art has following beneficial effect and advantage:
(1) by adopting the cold rolling mode of production of two rollers, pipe is through 1～3 cold rolling finished product that directly obtains of two rollers.
(2) reach the purpose that improves surface quality by the mode of taking inner surface bore hole, outer surface grinding and polishing.
(3) guaranteed the linearity of product by the mode of taking thermal straightening.
In sum, the present invention can shorten life cycle of the product greatly, improves the surface quality of product, and has guaranteed the linearity of product.
The specific embodiment
Below be specific embodiments of the invention, only as further specifying of the present invention, not as limitation of the present invention; for those skilled in the art; under the prerequisite that does not break away from thinking of the present invention, the part of having done is improved or is changed, and all should belong to protection scope of the present invention.
(1) ingot casting preparation: adopt titanium sponge and aluminum-vanadium alloy according to (2.0≤Al≤3.5%, 1.5≤V≤3.0%, C≤0.08%, N≤0.05%, H≤0.015%, O≤0.12%, Fe≤0.25%, surplus is Ti) proportioning prepare burden and the electrode pressing piece, electrode block carries out Combination Welding and prepares one-time electrode, then carries out two to three vacuum consumable arc-meltings and prepares ingot casting.
(2) forge: by the φ 600mm ingot casting that (1) obtains, (880～1100 ℃/2～6h) forge to φ 220mm or φ 180mm rod base through three fire.
(3) pipe preparation: adopt pressing method or roll piercing method to carry out the pipe preparation.At first will be to the strip off the skin boring and carry out face coat and coat copper sheet processing (outer surface adopts the copper sheet volume weldering of 1mm thickness, and inner surface adopts the copper pipe of 1.5mm thickness) of excellent base before the extruding.Additional extrusion temperature is 700～850 ℃, is incubated 1～3 hour; Pipe roll piercing heating in medium frequency temperature is 750～950 ℃ in the oblique milling method, is incubated 10～30 minutes.
(4) surface treatment: need carry out pickling and washing or alkali cleaning, pickling and washing to the hot-working pipe and remove face coat or surface scale (at HF:H
2SO
4: HNO
3: H
2O=1.5～2.5:20:34～39:100(volume ratio) in the mixed liquor, soaked 1～3 hour), carry out again surface strip off the skin (machinery strips off the skin or manual scraper), inner surface adopts bore hole to process, bore hole amount 0.2～1.5mm, the finished product outer surface adopts the mode of machine glazed finish, grinding and polishing amount 0.1～0.3mm.
(5) rolling: rolling front employing vacuum heat (600～750 ℃ of annealing temperatures, temperature retention time 1 hour, be not less than 1 * 10-1Pa) and (4) directly be rolled after processing, adopt cold rolling cogging one to the three passage Direct Rolling finished product of two rollers.Pipe or semifinished tube inner surface use chlorinated paraffin wax, outer surface to use machine oil and paraffin mixed liquor to be lubricated, and mill speed is 10～60 beats/mins, and rolling feed is 2～8mm, and each pass deformation is 20～50%, and general working rate is 30～70%.
(5) thermal straightening: all will carry out thermal straightening for middle and the heat treated pipe of finished product, heating-up temperature is 500～600 ℃.
(6) oil removal treatment: need to carry out oil removal treatment for the tubing that carries out vacuum heat after cold rolling, carry out first Ultrasonic Cleaning oil removing or degreaser and clean, then adopt pickling (HF:HNO
3: H
2O=5～12:45～60:100(volume ratio) in the mixed liquor, immersion 3～10min), washing and drying and processing.
(7) middle and finished product heat treatment: vacuum annealing heat treatment is all adopted in intermediate softening and finished product heat treatment, and annealing temperature is 600～800 ℃, is incubated 1～2 hour, and vacuum is not less than 1 * 10
-1Pa, the product of process intermediate annealing can be proceeded rolling, and the product of process finished products directly becomes finished product, or becomes finished product after overpickling and washing.
Claims (9)
1. the preparation method of a TA18 thick-wall tube, its technical process comprise ingot casting casting, forging, pipe preparation, surface treatment, rolling and and aligning, it is characterized in that: the cold rolling mode of described rolling employing two rollers.
2. according to the preparation method of TA18 thick-wall tube claimed in claim 1, it is characterized in that: in the above-mentioned cold-rolled process, controlled rolling speed is 10～60 beats/mins, and rolling feed is 2～8mm, and each pass deformation is 20～50%, and general working rate is 30～70%.
3. according to the preparation method of claim 1 or 2 described TA18 thick-wall tubes, it is characterized in that: in the above-mentioned cold-rolled process, cogging 1-3 passage directly is cold-pressed into finished product.
4. according to the preparation method of TA18 thick-wall tube claimed in claim 1, it is characterized in that: pressing method or roll piercing method are adopted in above-mentioned pipe preparation.
5. according to the preparation method of TA18 thick-wall tube claimed in claim 4, it is characterized in that: extrusion temperature is 700～850 ℃ in the described pressing method, is incubated 1～3 hour.
6. according to the preparation method of TA18 thick-wall tube claimed in claim 4, it is characterized in that: described roll piercing method pipe roll piercing heating in medium frequency temperature is 750～950 ℃, is incubated 10～30 minutes.
7. according to the preparation method of TA18 thick-wall tube claimed in claim 1, it is characterized in that: internal surface of bloom adopts bore hole to process during above-mentioned surface treatment, bore hole amount 0.2～1.5mm, and outer surface adopts the mode of machine glazed finish, grinding and polishing amount 0.1～0.3mm.
8. according to the preparation method of TA18 thick-wall tube claimed in claim 1, it is characterized in that: above-mentioned aligning adopts thermal straightening, and heating-up temperature is 500～600 ℃.
9. according to the preparation method of TA18 thick-wall tube claimed in claim 1, it is characterized in that: before cold rolling and after finished product TA18 thick-wall tube obtains, all will carry out vacuum annealing heat treatment, annealing temperature is 600～800 ℃, be incubated 1～2 hour, vacuum is not less than 1 * 10
-1Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210477651.0A CN102909237B (en) | 2012-11-22 | 2012-11-22 | A kind of preparation method of TA18 thick-wall tube |
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|---|---|---|---|
| CN201210477651.0A CN102909237B (en) | 2012-11-22 | 2012-11-22 | A kind of preparation method of TA18 thick-wall tube |
Publications (2)
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| CN102909237A true CN102909237A (en) | 2013-02-06 |
| CN102909237B CN102909237B (en) | 2015-09-09 |
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|---|---|---|---|
| CN201210477651.0A Expired - Fee Related CN102909237B (en) | 2012-11-22 | 2012-11-22 | A kind of preparation method of TA18 thick-wall tube |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103849803A (en) * | 2014-03-26 | 2014-06-11 | 宁夏东方钽业股份有限公司 | Tantalum alloy and method for preparing tantalum alloy tube |
| CN103894441A (en) * | 2014-03-20 | 2014-07-02 | 宝鸡拓普达钛业有限责任公司 | Machining method of TC4 titanium alloy thick-wall tubular product |
| CN103894442A (en) * | 2014-03-26 | 2014-07-02 | 宁夏东方钽业股份有限公司 | Tantalum tube and preparation method thereof |
| CN104232993A (en) * | 2014-04-15 | 2014-12-24 | 宁夏东方钽业股份有限公司 | High-performance TC11 tube and preparation thereof |
| CN105171348A (en) * | 2015-09-07 | 2015-12-23 | 云南钛业股份有限公司 | Method for producing TA10 alloy seamless tube |
| CN108098269A (en) * | 2017-12-18 | 2018-06-01 | 西安赛特思迈钛业有限公司 | A kind of preparation for processing of high intensity high-precision Ti6Al4V titanium alloy pipes |
| CN109234555A (en) * | 2018-10-24 | 2019-01-18 | 成都先进金属材料产业技术研究院有限公司 | The preparation method of small-bore TA18 titanium alloy seamless pipe |
| CN109513766A (en) * | 2018-11-15 | 2019-03-26 | 南通金尼新材料科技有限公司 | A kind of manufacturing method of high concentricity martensitic stainless steel seamless pipe material |
| CN111906498A (en) * | 2020-06-16 | 2020-11-10 | 陈胜川 | Processing method of TA18 titanium alloy seamless pipe for bicycle frame |
| CN112605123A (en) * | 2020-11-30 | 2021-04-06 | 西北有色金属研究院 | Preparation method of low-cost high-toughness titanium alloy pipe for ocean engineering |
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| CN103894441B (en) * | 2014-03-20 | 2016-06-29 | 宝鸡拓普达钛业有限责任公司 | The processing method of TC4 titanium alloy thick-wall pipe material |
| CN103894441A (en) * | 2014-03-20 | 2014-07-02 | 宝鸡拓普达钛业有限责任公司 | Machining method of TC4 titanium alloy thick-wall tubular product |
| CN103894442A (en) * | 2014-03-26 | 2014-07-02 | 宁夏东方钽业股份有限公司 | Tantalum tube and preparation method thereof |
| CN103849803A (en) * | 2014-03-26 | 2014-06-11 | 宁夏东方钽业股份有限公司 | Tantalum alloy and method for preparing tantalum alloy tube |
| CN104232993B (en) * | 2014-04-15 | 2017-03-08 | 宁夏东方钽业股份有限公司 | A kind of high-performance TC11 pipe and preparation method thereof |
| CN104232993A (en) * | 2014-04-15 | 2014-12-24 | 宁夏东方钽业股份有限公司 | High-performance TC11 tube and preparation thereof |
| CN105171348A (en) * | 2015-09-07 | 2015-12-23 | 云南钛业股份有限公司 | Method for producing TA10 alloy seamless tube |
| CN108098269A (en) * | 2017-12-18 | 2018-06-01 | 西安赛特思迈钛业有限公司 | A kind of preparation for processing of high intensity high-precision Ti6Al4V titanium alloy pipes |
| CN109234555A (en) * | 2018-10-24 | 2019-01-18 | 成都先进金属材料产业技术研究院有限公司 | The preparation method of small-bore TA18 titanium alloy seamless pipe |
| CN109234555B (en) * | 2018-10-24 | 2020-08-18 | 成都先进金属材料产业技术研究院有限公司 | Preparation method of small-caliber TA18 titanium alloy seamless tube |
| CN109513766A (en) * | 2018-11-15 | 2019-03-26 | 南通金尼新材料科技有限公司 | A kind of manufacturing method of high concentricity martensitic stainless steel seamless pipe material |
| CN111906498A (en) * | 2020-06-16 | 2020-11-10 | 陈胜川 | Processing method of TA18 titanium alloy seamless pipe for bicycle frame |
| CN112605123A (en) * | 2020-11-30 | 2021-04-06 | 西北有色金属研究院 | Preparation method of low-cost high-toughness titanium alloy pipe for ocean engineering |
| CN112605123B (en) * | 2020-11-30 | 2022-03-15 | 西北有色金属研究院 | Preparation method of low-cost high-toughness titanium alloy pipe for ocean engineering |
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