CN101176882A - Process technique of high-strength titanium alloy pipes - Google Patents
Process technique of high-strength titanium alloy pipes Download PDFInfo
- Publication number
- CN101176882A CN101176882A CNA2007101794272A CN200710179427A CN101176882A CN 101176882 A CN101176882 A CN 101176882A CN A2007101794272 A CNA2007101794272 A CN A2007101794272A CN 200710179427 A CN200710179427 A CN 200710179427A CN 101176882 A CN101176882 A CN 101176882A
- Authority
- CN
- China
- Prior art keywords
- rolling
- titanium alloy
- pipe
- diameter
- processing technology
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005097 cold rolling Methods 0.000 claims abstract description 17
- 238000000137 annealing Methods 0.000 claims abstract description 15
- 238000005516 engineering process Methods 0.000 claims abstract description 15
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 6
- 239000000956 alloy Substances 0.000 claims abstract description 6
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000005098 hot rolling Methods 0.000 claims abstract description 6
- 238000005242 forging Methods 0.000 claims abstract description 5
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims description 5
- 210000003491 Skin Anatomy 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005554 pickling Methods 0.000 claims description 3
- 230000003287 optical Effects 0.000 claims description 2
- 238000009785 tube rolling Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 238000005096 rolling process Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract 1
- 238000010621 bar drawing Methods 0.000 abstract 1
- 238000005488 sandblasting Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000006104 solid solution Substances 0.000 description 10
- 238000001125 extrusion Methods 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 230000005496 eutectics Effects 0.000 description 2
- 238000001192 hot extrusion Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound 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[Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000001808 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003014 reinforcing Effects 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N titanium Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Abstract
The invention relates to a processing technology of high-strength titanium alloy tubes, belonging to the material processing technical field. The processing technology follows the steps below: first, making the vacuum secondary smelting TB2 alloy ingot into 380mm diameter through cogging-forging and hot-rolling, getting a TB2 rolling rod; second, processing the TB2 rolling rod to obtain 52 mm to 54 mm smooth rod in Diameter by bar drawing machine, heating up to 950 to 1000 degree C, keeping the temperature for 30 to 50 minute, rotary piercing on the two-roller rotary piercing machines, obtaining a tube blank of outside diameter from 55mm to 58mm, insid diameter from 39mm to 42 mm; third, make the rotary piercing tube blank process heating up to 770 to 800 degree C, keeping the temperature for 30minute to 50minute, air-cooled annealing and sandblasting, removal of the oxidation scale of the internal and external surface at the process of acid washing, obtaining a cold rolling tube blank; fourth, processing the cold-rolled tube blank with 6 pass cold rolling of the LD60 cold-rolling tube mill, the intermediate annealing temperature is from 760 to 790 degree C, obtaining a finished tube.
Description
Technical field
The invention belongs to material processing field, particularly a kind of processing technology of high-strength titanium alloy pipes.
Background technology
Have higher room temperature strength and resistance of deformation for processing, medium caliber, the titanium alloy pipe of certain-length and wall thickness considers that from the tubing processing technology suitable difficulty is arranged.Its technological difficulties are: prepare the high strength pipe as adopting hot-extrusion method, resistance of deformation is big, the hot processing temperature height, as adopt traditional copper-clad cover to push, because titanium and copper about 880 ℃ eutectic reaction take place, generate the eutectic brittle phase, the difficult quality guarantee of extrusion tube blank.For the extrusion billet of large-size, need large tonnage extruder to push simultaneously, general unit does not have this kind equipment; Adopt forging bastinade deep hole to prepare pipe in addition, because the price of titanium alloy is more expensive, adopt this kind method stock utilization lower, the working modulus of this method material is less simultaneously, is unfavorable for improving the performance of material.
Summary of the invention
The present invention provides a kind of processing technology of high-strength titanium alloy pipes especially in order to solve deficiency of the prior art.
Technical scheme of the present invention is to adopt roll piercing and cold rolling processing technology, and the concrete operations step is as follows:
1) be that the TB2 alloy cast ingot of 380mm carries out cogging through 1100～1200 ℃ of two fire and forges with vacuum secondary smelting diameter, the forging rod that obtains is heated to 950～1000 ℃, be incubated 30～50 minutes, one intimately rolls the TB2 that obtains cross section 55 * 55mm rolls rod, and wherein the hot rolling deformation amount is 79%; Wherein the TB2 of hot rolling rolls excellent working modulus 〉=75%, rolls excellent diameter and is not less than 54mm.
2) TB2 being rolled rod, to be machined to φ with bar be 52～54mm optical wand, is heated to 950 ℃～1000 ℃, and insulation 30～50min carries out roll piercing and obtains φ on the Mannesmann piercing machine
OutwardBe 55～58mm, φ
InIt is the pipe of 39～42mm.
3) with the roll piercing pipe through 770～800 ℃, insulation 30～50min, air cooling annealing in process and sandblast, pickling etc. are removed surfaces externally and internally oxide skin and are handled, and obtain cold rolling pipe;
4) cold rolling pipe cold rolling through 6 passages on the LD60 cold pilger mill, the intermediate annealing temperature is 760～790 ℃, carries out the centre vacuum annealing between wherein per 2 passages, and every time tube rolling deflection is 7～20%, obtains finished product tubing.
Production technology of the present invention is simple, production cost is low, the yield rate height, have higher room temperature strength and the big titanium alloy pipe of resistance of deformation for processing, process equipment is simple, moulding easily, can effectively improve the quality of alloy pipe, yield rate, can process a kind of medium caliber, the certain length and the titanium alloy pipe of wall thickness, the alloy pipe surface-brightening that processes, serviceability is good, meet instructions for use fully, the titanium alloy pipe of producing has very high combination property, has avoided the employing hot extrusion technique, and resistance of deformation is big, the hot processing temperature height, the extrusion modling difficulty, difficulty finds the problem of suitable extrusion lubricant, and there are a series of problems such as stock utilization is low in forging bastinade deep hole technology.
Description of drawings
Fig. 1 is a hot-rolled state sectional view of the present invention
Fig. 2 is a roll piercing sectional view of the present invention
Fig. 3 is sectional view after the finishing of the present invention
Fig. 4 is a cold rolled tube sectional view of the present invention
Fig. 5 is a process chart of the present invention
The specific embodiment
Below by the drawings and the specific embodiments the present invention is described in further detail.
The TB2 titanium alloy with higher room temperature strength and resistance of deformation to being developed processes internal diameter 40～30mm, and the tubing of wall thickness 2～5 adopts roll piercing and cold rolling processing technology processing tubing, and the concrete operations step is as follows:
1) with reference to Fig. 1, shown in Figure 5, with TB2 alloy vacuum secondary smelting diameter is that the ingot casting of 380mm earlier carries out cogging through 1150 ℃, 1110 ℃ two fire respectively and forges, forge into the square billet that the cross section is 120 * 120mm, to forge rod again and be heated to 980 ℃, be incubated 30～50 minutes, one intimately roll into the square rod that the cross section is 55 * 55mm then, the hot rolling deformation amount is 79%;
2) with reference to Fig. 2, shown in Figure 5, hot rolled rod through being finish-machined to the bar of φ 52 * 800mm, is heated to 980 ℃ with bar, insulation 30～50min carries out roll piercing then and obtains φ on the Mannesmann piercing machine
OutwardBe 56.6mm, φ
InBe 41mm, length is the pipe of 1200mm;
3) with reference to Fig. 3, shown in Figure 5, the roll piercing pipe through 800 ℃, is incubated 30min, air cooling, annealing in process, outer surface of tube blank adopts sandblast, pickling and mach method scale removal, and its inner surface adopts the reamer oxide skin of φ 43.5mm, obtains φ
OutwardBe 54mm, φ
InBe 43.5mm, length is the cold rolling pipe of 1200mm;
4) with reference to Fig. 4, shown in Figure 5, cold rolling through 6 passages on the LD60 cold pilger mill of cold rolling pipe, provided the size of 6 passage rolling technological parameters and drawn and rolled tube in the table 1, list the diameter of every time roll selected for use and core bar in the table respectively, and the internal diameter of tubing and outside dimension, listed file names with mill speed (amount of feeding).Carry out an intermediate annealing between every twice time in the operation of rolling, the intermediate annealing temperature is 790 ℃, adopts vacuum annealing for avoiding the tubing oxidation, easily causes hydrogen embrittlement because titanium alloy is inhaled hydrogen, and annealing back tubing is at 20%HNO
3+ 5%HF+H
2Carry out acidity among the O, the suction hydrogen layer of place to go tube surfaces finally obtains φ
OutwardBe 41.5, φ
InFinished product tubing for 36.5mm.
List finished product tubing in the table 2 respectively at the tensile property of cold rolling attitude, two-phase section solid solution, monophase field solid solution, two-phase section solid solution+timeliness, monophase field solid solution+timeliness.Tubing intensity reduces after the monophase field solid solution as can be seen in the table, plasticity improves, and material softening helps follow-up further cold working.Tubing has the coupling of plasticity and intensity preferably after two-phase section solid solution+Ageing Treatment, can be as finished product pipe reinforcing heat treating regime.
Table 1
| Passage | Roll | The core bar diameter | Tube outer diameter | Pipe internal diameter | Amount of feeding mm/ changes |
| 1 | 52 | 42 | 52.09 | 42.20 | 2.5 |
| 2 | 50 | 40.5 | 50.18 | 40.60 | 2.5 |
| 790 ℃/30min vacuum annealing | |||||
| 3 | 48 | 39 | 48.05 | 39.04 | 2.5 |
| 4 | 46 | 37.5 | 46.05 | 37.51 | 2.5 |
| 790 ℃/30min vacuum annealing | |||||
| 5 | 44 | 36 | 44.02 | 36.02 | 2.5 |
| 6 | 42 | 35.5 | 42.05 | 35.51 | 2.5 |
Table 2
| Condition of heat treatment | The analytical test result | ||
| σ b/MPa | σ 0.2/MPa | δ 5/％ | |
| Cold rolling attitude | 1005 | 938 | 8.0 |
| The two-phase section solid solution | 905 | 840 | 15.5 |
| The monophase field solid solution | 863 | 807 | 18.5 |
| Two-phase section solid solution+timeliness | 1245 | 1170 | 8.0 |
| Monophase field solid solution+timeliness | 1105 | 990 | 9.0 |
Claims (3)
1. the processing technology of a high-strength titanium alloy pipes is characterized in that adopting roll piercing and the cold rolling processing technology that combines, and the concrete operations step is as follows:
1) be that the TB2 alloy cast ingot of 380mm carries out cogging through 1100～1200 ℃ of two fire and forges with vacuum secondary smelting diameter, the forging rod that obtains is heated to 950～1000 ℃, be incubated 30～50 minutes, one intimately rolls the TB2 that obtains cross section 55 * 55mm rolls rod, and wherein the hot rolling deformation amount is 79%;
2) TB2 being rolled rod, to be machined to φ with bar be 52～54mm optical wand, is heated to 950 ℃～1000 ℃, and insulation 30～50min carries out roll piercing and obtains φ on the Mannesmann piercing machine
OutwardBe 55～58mm, φ
InIt is the pipe of 39～42mm;
3) with the roll piercing pipe through 770～800 ℃, insulation 30～50min, air cooling annealing in process and sandblast, pickling are removed surfaces externally and internally oxide skin and are handled, and obtain cold rolling pipe;
4) cold rolling pipe cold rolling through 6 passages on the LD60 cold pilger mill, the intermediate annealing temperature is 760～790 ℃, obtains finished product tubing.
2. according to the processing technology of the described a kind of high-strength titanium alloy pipes of claim 1, it is characterized in that: the TB2 of hot rolling rolls excellent working modulus 〉=75% in the described step 1), rolls excellent diameter and is not less than 54mm.
3. according to the processing technology of the described a kind of high-strength titanium alloy pipes of claim 1, it is characterized in that carrying out the centre vacuum annealing between per 2 passages of described step 4), and every time tube rolling deflection is 7～20%.
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