CN103008386A - Preparation method of thickness-diameter ratio longitudinal titanium and titanium alloy welded pipe - Google Patents
Preparation method of thickness-diameter ratio longitudinal titanium and titanium alloy welded pipe Download PDFInfo
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Abstract
The invention discloses a preparation method of a thickness-diameter ratio longitudinal titanium and titanium alloy welded pipe The preparation method is characterized by comprising the following processes of: (1) by online continuous cold-bending and forming of a titanium tape, preparing a pipe material which is formed as a cylindrical structure from a plate-shaped structure; (2) feeding into a welding box body, implementing argon tungsten-arc welding, thereby welding the un-sealed cylindrical structure into a sealed pipe-shaped structure; (3) implementing online conductive stress removing annealing on the welded pipe material; (4) sizing and straightening; and (5) implementing eddy loss-less flaw detection, ultrasonic loss-less flaw detection and airtightness detection, and obtaining a qualified pipe material in the circumstances of no alarm and no pressure relief. According to the thickness-diameter ratio titanium welded pipe which is produced by the method disclosed by the invention, the size and specification, mechanical performance, chemical component, surface quality and the like can meet the demands of the titanium welded pipe applied to the seawater desalination engineering; and the unconventional titanium welded pipe production process is broken through, to manufacture the unconventional titanium welded pipe applied to the seawater desalination engineering with the thickness-diameter ratio ranging from 0.015 to 0.020.
Description
Technical field
The present invention relates to a kind of titanium or titanium alloy materials processing technology, particularly a kind of preparation method of radius-thickness ratio vertical masonry joint titanium or titanium alloy welded tube.
Background technology
Because it is little that titanium has proportion, the premium properties such as the high and seawater corrosion resistance of specific strength, titanium welding pipe has obtained more and more widely application in fields such as desalinization, electric power, chemical industry.In the desalinization industry, often need to use Large Diameter Pipeline such as Φ 38 ~ Φ 50mm, the thick vertical masonry joint titanium or titanium alloy welded tube such as 0.5 ~ 1.0mm specification of thin-walled, to take full advantage of the advantages such as the large heat exchange in its cross section and heating effect are good.The technology of preparing of conventional specification vertical masonry joint titanium welding pipe is ripe, and the conventional specification of the titanium welding pipe of vertical masonry joint titanium welding pipe sees the ok subregion in the following table 1 for details.
Table 1
For external diameter Φ 38 ~ Φ 50mm, the technology of preparing of radius-thickness ratio 0.013 ~ 0.020 vertical masonry joint titanium welding pipe all is in conceptual phase both at home and abroad, substantive breakthroughs that so far there are no.The titanium welding pipe of this thickness and caliber, because the large tube wall of caliber is thin, also be that its raw material titanium band is thin and wide, this thin and wide titanium band in the process that is molded into welded tube because the mobile directionality of metal is large, there is moulding not exclusively and moulding limit section wave serious problems, and the problem such as the serious and welding difficulty of bounce-back after the moulding, these problems become the technological difficulties of this Large Diameter Pipeline thin-wall titanium welding pipe of present making.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method of radius-thickness ratio vertical masonry joint titanium or titanium alloy welded tube, realization is to external diameter Φ 38 ~ Φ 50mm, the manufacture of the radius-thickness ratio titanium welding pipe that wall thickness 0.5 ~ 1.0mm vertical masonry joint Large Diameter Pipeline thin-walled is thick, satisfy the desalinization field to the application demand of this radius-thickness ratio vertical masonry joint titanium welding pipe, the titanium welding pipe dimensions of preparation, weldquality, surface quality etc. satisfy the requirement that titanium welding pipe is used in the desalinization field.
For the purpose that realizes solving the problems of the technologies described above, the present invention has adopted following technical scheme:
The preparation method of a kind of radius-thickness ratio vertical masonry joint titanium or titanium alloy welded tube of the present invention, technical scheme is: the titanium band is through the on-line continuous cold roll forming, be molded into closed aperture by tabular, keep this closed aperture state to enter the welding casing, the place carries out Gas Tungsten Arc Welding to the tubing closure seam, forms vertical masonry joint titanium or titanium alloy welded tube; Vertical masonry joint titanium or titanium alloy welded tube after the welding enters online induction annealing device, by online eddy-current heating to the tubing heat treatment of annealing, remove the machining stress that remains in moulding and the welding process in the tubing, at last by sizing, aligning, prepare the desalinization titanium welding pipe that size and surface, performance meet the demands, detailed process is:
(1) vertical masonry joint titanium welding pipe moulding:
The moulding of vertical masonry joint titanium welding pipe is to bend to closed poroid process from level board on shaping machine set; The arrangement that vertical masonry joint titanium welding pipe shaping machine set adopts is horizontal roller and edger roll interlaced arrangement, realize the titanium band by tabular to the poroid distortion of closure.
Gap between the plain-barreled roll in the shaping machine set and the staggered pattern of edger roll and plain-barreled roll and edger roll plays conclusive effect to the moulding of titanium welding pipe.Especially thinner to Large Diameter Pipeline wall thickness titanium welding pipe moulding, the one, the large wall of caliber thin its in forming process, if arrangement mode and gap design are incorrect, the little inhomogeneous generation of the distortion limit section wave of intermediate deformation because edge deformation is large then can appear; The 2nd, concerning the large titanium material of elastic modelling quantity, the larger forming process rebound phenomena of caliber is more serious, thereby can cause welding phenomenon incessantly.
Shaping machine set is divided into into 4 parts: 1, centralising device part: comprise 3 groups of edger rolls, 3 groups of unpowered transmissions of edger roll are passive transmission; Realize the centering of supplied materials titanium band is led by 3 groups of edger rolls, 3 groups of edger roll continuous and compact are arranged, and the gap between edger roll is 10 ~ 15mm; 2, thick shaped device part: comprise 3 groups of plain-barreled rolls and 2 groups of edger rolls, arrangement mode is plain-barreled roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll; The lower roll of 3 groups of plain-barreled rolls is the independent transmission of drive, and the top roll of plain-barreled roll and edger roll are unpowered passive transmission; The titanium tape leader of process centralising device is introduced into the First plain-barreled roll and carries out moulding, and through thick shaped device, the abundant moulding of titanium band edge section, the titanium band is by the tabular shape that is molded into the certain opening degree; Gap in the thick shaped device between plain-barreled roll and edger roll is 20 ~ 30mm; 3, precisive shaped device part: comprise 4 groups of plain-barreled rolls and 6 groups of edger rolls, arrangement mode is edger roll+plain-barreled roll+edger roll+edger roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll; The lower roll of 4 groups of plain-barreled rolls is the independent transmission of drive, and the top roll of plain-barreled roll and edger roll are unpowered passive transmission; Through the precisive shaped device, the titanium band is molded into closed poroid, and the gap in the precisive shaped device between plain-barreled roll and edger roll is 20 ~ 30mm; 4, caliber holding device part: comprise 4 groups of edger rolls, edger roll is unpowered transmission all; Remain closed poroidly by this device band, rebound into ringent problem after solving moulding, remain closed the poroid welding casing that enters, this device partly in gap between edger roll be 10 ~ 15mm.
(2) tubing that is molded into closed aperture enters the welding casing, adopt the mode of argon tungsten-arc welding that tubing is welded, in inner at tubing in the welding process, the welding casing, in the weld seam, be filled with a certain amount of argon gas in the welding butt cover, postwelding obtains inner and outer welding and fills fully, color is silvery white, the weld seam that transition is round and smooth; Wherein, the height of control tungsten electrode and weld seam is at 2 ~ 2.5mm, and argon flow amount is at 5 ~ 20l/min, so that weld seam can cool off fast, obtains the commissure crystallite dimension at 9 ~ 15um; Vertical masonry joint titanium welding pipe after obtaining welding.
The welding current of welding process, voltage and speed of welding are complementary.
Preferred welding condition is: weld polarity is straight polarity, and the tungsten electrode diameter is 3.2mm, and when the tungsten electrode pointed shape was 15 ~ 50 ° of tapers, when welding current is 0 ~ 95 A, arc voltage was 0 ~ 10.5V, and speed of welding is 0 ~ 1m/min; When welding current is 70 ~ 140 A, arc voltage is 8 ~ 12V, and speed of welding is 1 ~ 2m/min; When welding current is 100 ~ 220 A, arc voltage is 8.5 ~ 12.5V, and speed of welding is 2 ~ 3m/min.
(3) the vertical masonry joint titanium welding pipe after the welding is responded to stress relief annealing online.Concrete online induction stress relief annealing method is: the titanium welding pipe that welding is good passes load coil online, when passing through alternating current in the induction coil, produce alternating magnetic field, make the welded tube that is in the magnetic field produce the induced potential of same frequency, thereby in workpiece, produce eddy current, take eddy current as main fuel factor is heated to the technique initialization temperature with workpiece, carry out online induction heat treatment.It is 550 ~ 700 ℃ that induction heat treatment process among the present invention is set annealing temperature, inert gas shielding in the annealing process, and tubing tapping temperature after the annealing≤100 ℃, annealing speed and speed of production are synchronous.In this way, guaranteed tubing along circumference and the uniformity of the effect of radially annealing.
(4) the vertical masonry joint titanium welding pipe of stress relief annealing carried out the sizing aligning.Tubing after the stress relief annealing passes through the sizing straightener online, realizes the accurate control to tubing caliber and linearity; The sizing straightener is that the mode of plain-barreled roll and edger roll alternative arrangement forms, and permutation and combination method is plain-barreled roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll+edger roll, and the gap between plain-barreled roll and edger roll is 20 ~ 30mm.
(5) the vertical masonry joint titanium welding pipe after sizing is aligned carries out vortex nondestructive flaw and ultrasonic nondestructive test, air-tightness detect, in the situation that alarm free and release are qualified.
The described radius-thickness ratio vertical masonry joint of this patent titanium or titanium alloy welded tube specifically refers to external diameter Φ 38 ~ Φ 50mm, wall thickness 0.5 ~ 1.0mm, radius-thickness ratio 0.013 ~ 0.020.
These technical schemes also can make up mutually, thereby reach better technique effect.
The unit of the described length and width of this patent, thick, internal-and external diameter does not specify, is millimeter.
The present invention adopts raw material titanium band through the on-line continuous cold roll forming, is molded into closed aperture by tabular, keeps this closed aperture state to enter the welding casing, and the place carries out Gas Tungsten Arc Welding to the tubing closure seam, forms vertical masonry joint titanium or titanium alloy welded tube; Vertical masonry joint titanium or titanium alloy welded tube after the welding enters online induction annealing device, by online eddy-current heating to the tubing heat treatment of annealing, remove the machining stress that remains in moulding and the welding process in the tubing, by the technical scheme of sizing, aligning, have following beneficial effect at last:
Caliber Φ 38 ~ Φ 50mm through this preparation method's production, the vertical masonry joint titanium welding pipe weldquality of wall thickness 0.5 ~ 1.0mm and surface quality etc. satisfy the requirement that titanium welding pipe is used in desalinization, break through the preparation method of this 0.013 ~ 0.020 radius-thickness ratio vertical masonry joint titanium and titanium welding pipe, thereby realize the production in enormous quantities of this radius-thickness ratio vertical masonry joint titanium or titanium alloy welded tube, can be in the extensive use of desalinization field.
By this preparation method, can solve Large Diameter Pipeline, thin-wall titanium welding pipe moulding difficult point obtains the manufacturing technique method of this radius-thickness ratio titanium welding pipe, and this preparation method is simple to operate, easily realizes producing in enormous quantities.
Description of drawings
Fig. 1 is the shaping machine set design diagram.
Among the figure, 1-edger roll, 2-be with the plain-barreled roll of transmission, 3-centralising device, the thick shaped device of 4-, 5-precisive shaped device, 6-cast holding device.
Fig. 2 is sizing unit design diagram.
Among the figure, 7-is with the plain-barreled roll of transmission, the 8-edger roll.
The specific embodiment
Below in conjunction with accompanying drawing this patent is further explained.But the protection domain of this patent is not limited to concrete embodiment.
Raw material TA2 titanium band, bandwidth 122.0 ~ 123.5, wall thickness 0.68 ~ 0.76mm, cold roll forming roller mold specification Φ 39 carries out the preparation of Φ 39 * 0.7mm specification vertical masonry joint titanium welding pipe continuously.The centralising device that the titanium band forms through 3 groups on shaping machine set unpowered edger rolls, the gap between edger roll is 10mm, realizes neutralization is led to the titanium band.The titanium band of process centralising device enters the thick shaped device in the shaping machine set, and arrangement mode is plain-barreled roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll.Gap in the thick shaped device between plain-barreled roll and edger roll is 25mm.The lower roll of 3 groups of plain-barreled rolls is the independent transmission of drive, and the top roll of plain-barreled roll and edger roll are unpowered passive transmission.Through thick shaped device, the abundant moulding of titanium band edge section, the titanium band is by the tabular shape that is molded into the certain opening degree.Next enter the precisive shaped device, arrangement mode is edger roll+plain-barreled roll+edger roll+edger roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll, and the gap in the precisive shaped device between plain-barreled roll and edger roll is 25mm.The lower roll of 4 groups of plain-barreled rolls is the independent transmission of drive, and the top roll of plain-barreled roll and edger roll are unpowered passive transmission.Through the precisive shaped device, the titanium band is molded into closed poroid.Be molded into that closed aperture is laggard to enter the caliber holding device that is comprised of 4 groups of edger rolls, edger roll is unpowered transmission all.Make tubing remain closed the poroid welding casing that enters, the gap in this device between edger roll is 10mm.Through scratching without any wiping around the shaping machine set tubing cylinder, the cylinder joint is the linearity docking, without any wave.
The tubing that is molded into the closed circle tubular carries out online Gas Tungsten Arc Welding, adopt welding condition: speed of welding 2 ~ 3m/min, welding current 110 ~ 200A, weldingvoltage 9 ~ 10V, argon flow amount 5 ~ 15l/min, pass through Tig Welding, by the untight cylindric tubulose that is welded into sealing, so that weld seam is filled fully, transition is round and smooth, outside weld reinforcement 0 ~ 0.5mm, inside weld reinforcement 0 ~ 0.1mm.Adopt welding backwash non-destructive detection device, the butt welded seam quality is monitored, and defectiveness is reported to the police, the warning Partial Resection.After the welding tubing is carried out just sizing, caliber scope Φ 39 ± 0.25mm behind the sizing.Use emulsion in the Sizing Process, then carry out online induction annealing, the emulsion that will remain in tube surfaces with hot water before the annealing cleans up, compressed air purges 75 ~ 95 ℃ of hot water water temperatures.Online induction annealing remains in stress in the tubing with removal, 560 ~ 600 ℃ of temperature, and the argon atmosphere protection, 10 ~ 25mbar is pressed in the storehouse.Tubing carries out smart sizing, aligning after the annealing.Pipe diameter Φ 39 ± 0.15mm behind the essence sizing: tubing linearity 0.5 ~ 1.5mm/m behind the aligning: the tubing behind the sizing aligning is carried out eddy current inspection second time and ultrasonic flaw detection, air-tightness detection.The result is qualified.
Sampling and testing mechanical property and processing performance.Performance: yield strength Rp0.2:360MPa, tensile strength Rm:470MPa, percentage elongation: 60.5%, it is all qualified that flattening, 20% enlarging, commissure oppositely flatten.
Raw material TA2 titanium band, bandwidth 139 ~ 140.5, wall thickness 0.68 ~ 0.76mm, cold roll forming roller mold specification Φ 39 is prepared Φ 44.7 * 0.7mm specification vertical masonry joint titanium welding pipe continuously.
The centralising device that the titanium band forms through 3 groups on shaping machine set unpowered edger rolls, the gap between edger roll is 10mm, realizes neutralization is led to the titanium band.The titanium band of process centralising device enters the thick shaped device in the shaping machine set, and arrangement mode is plain-barreled roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll.Gap in the thick shaped device between plain-barreled roll and edger roll is 25mm.The lower roll of 3 groups of plain-barreled rolls is the independent transmission of drive, and the top roll of plain-barreled roll and edger roll are unpowered passive transmission.Through thick shaped device, the abundant moulding of titanium band edge section, the titanium band is by the tabular shape that is molded into the certain opening degree.Next enter the precisive shaped device, arrangement mode is edger roll+plain-barreled roll+edger roll+edger roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll, and the gap in the precisive shaped device between plain-barreled roll and edger roll is 25mm.The lower roll of 4 groups of plain-barreled rolls is the independent transmission of drive, and the top roll of plain-barreled roll and edger roll are unpowered passive transmission.Through the precisive shaped device, the titanium band is molded into closed poroid.Be molded into that closed aperture is laggard to enter the caliber holding device that is comprised of 4 groups of edger rolls, edger roll is unpowered transmission all.Make tubing remain closed the poroid welding casing that enters, the gap in this device between edger roll is 10mm.Through scratching without any wiping around the shaping machine set tubing cylinder, the cylinder joint is the linearity docking, without any wave.
The tubing that is molded into the closed circle tubular carries out online Gas Tungsten Arc Welding, and the argon tungsten-arc welding process parameter connects and adopts speed of welding 2 ~ 3m/min, welding current 100 ~ 180A, weldingvoltage 8 ~ 10V.By Tig Welding, by the untight cylindric tubulose that is welded into sealing, so that weld seam is filled fully, transition is round and smooth, outside weld reinforcement 0 ~ 0.5mm, inside weld reinforcement 0 ~ 0.1mm.Adopt welding backwash non-destructive detection device, the butt welded seam quality is monitored, and defectiveness is reported to the police, the warning Partial Resection.After the welding tubing is carried out just sizing.Use emulsion in the Sizing Process, then carry out online induction annealing, the emulsion that will remain in tube surfaces with hot water before the annealing cleans up, compressed air purges 75 ~ 95 ℃ of hot water water temperatures.The globule that remains in tube surfaces scraped wipe clean.Online induction annealing remains in stress in the tubing, 560 ~ 580 ℃ of temperature, argon atmosphere protection with removal.Tubing carries out smart sizing, aligning after the annealing.Pipe diameter Φ 44.7 ± 0.15mm behind the essence sizing: tubing linearity 0.2 ~ 1.5mm/m behind the aligning.Tubing behind the sizing aligning is carried out eddy current inspection second time and ultrasonic flaw detection, air-tightness detection.The result is qualified.
Sampling and testing mechanical property and processing performance and commissure metallurgical structure.Performance: yield strength 325MPa, tensile strength 443MPa, percentage elongation 58.5%, it is all qualified that flattening, 20% enlarging, commissure oppositely flatten.
Claims (6)
1. the preparation method of a radius-thickness ratio vertical masonry joint titanium or titanium alloy welded tube, it is characterized in that: the titanium band is through the on-line continuous cold roll forming, be molded into closed aperture by tabular, keep this closed aperture state to enter the welding casing, the place carries out Gas Tungsten Arc Welding to the tubing closure seam, forms vertical masonry joint titanium or titanium alloy welded tube; Vertical masonry joint titanium or titanium alloy welded tube after the welding enters online induction annealing device, by online eddy-current heating to the tubing heat treatment of annealing, remove the machining stress that remains in moulding and the welding process in the tubing, at last by sizing, aligning, prepare the desalinization titanium welding pipe that size and surface, performance meet the demands, detailed process is:
(1) vertical masonry joint titanium welding pipe moulding:
The moulding of vertical masonry joint titanium welding pipe is to bend to closed poroid process from level board on shaping machine set; The arrangement that vertical masonry joint titanium welding pipe shaping machine set adopts is horizontal roller and edger roll interlaced arrangement, realize the titanium band by tabular to the poroid distortion of closure;
Shaping machine set is divided into into 4 parts: 1, centralising device part: comprise 3 groups of edger rolls, 3 groups of unpowered transmissions of edger roll are passive transmission; Realize the centering of supplied materials titanium band is led by 3 groups of edger rolls, 3 groups of edger roll continuous and compact are arranged, and the gap between edger roll is 10 ~ 15mm; 2, thick shaped device part: comprise 3 groups of plain-barreled rolls and 2 groups of edger rolls, arrangement mode is plain-barreled roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll; The lower roll of 3 groups of plain-barreled rolls is the independent transmission of drive, and the top roll of plain-barreled roll and edger roll are unpowered passive transmission; The titanium tape leader of process centralising device is introduced into the First plain-barreled roll and carries out moulding, and through thick shaped device, the abundant moulding of titanium band edge section, the titanium band is by the tabular shape that is molded into the certain opening degree; Gap in the thick shaped device between plain-barreled roll and edger roll is 20 ~ 30mm; 3, precisive shaped device part: comprise 4 groups of plain-barreled rolls and 6 groups of edger rolls, arrangement mode is edger roll+plain-barreled roll+edger roll+edger roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll; The lower roll of 4 groups of plain-barreled rolls is the independent transmission of drive, and the top roll of plain-barreled roll and edger roll are unpowered passive transmission; Through the precisive shaped device, the titanium band is molded into closed poroid, and the gap in the precisive shaped device between plain-barreled roll and edger roll is 20 ~ 30mm; 4, caliber holding device part: comprise 4 groups of edger rolls, edger roll is unpowered transmission all; Remain closed poroidly by this device band, rebound into ringent problem after solving moulding, remain closed the poroid welding casing that enters, this device partly in gap between edger roll be 10 ~ 15mm;
(2) tubing that is molded into closed aperture enters the welding casing, adopt the mode of argon tungsten-arc welding that tubing is welded, in inner at tubing in the welding process, the welding casing, in the weld seam, be filled with a certain amount of argon gas in the welding butt cover, postwelding obtains inner and outer welding and fills fully, color is silvery white, the weld seam that transition is round and smooth; Wherein, the height of control tungsten electrode and weld seam is at 2 ~ 2.5mm, and argon flow amount is at 5 ~ 20l/min, so that weld seam can cool off fast, obtains the commissure crystallite dimension at 9 ~ 15um; Vertical masonry joint titanium welding pipe after obtaining welding;
(3) the vertical masonry joint titanium welding pipe after the welding is responded to stress relief annealing online;
(4) the vertical masonry joint titanium welding pipe of stress relief annealing carried out the sizing aligning;
(5) the vertical masonry joint titanium welding pipe after sizing is aligned carries out vortex nondestructive flaw and ultrasonic nondestructive test, air-tightness detect, in the situation that alarm free and release are qualified.
2. the preparation method of described radius-thickness ratio vertical masonry joint titanium or titanium alloy welded tube according to claim 1, it is characterized in that: described radius-thickness ratio vertical masonry joint titanium or titanium alloy welded tube, refer to external diameter Φ 38 ~ Φ 50mm, wall thickness 0.5 ~ 1.0mm, the vertical masonry joint titanium or titanium alloy welded tube of radius-thickness ratio 0.013 ~ 0.020.
3. the preparation method of described radius-thickness ratio vertical masonry joint titanium or titanium alloy welded tube according to claim 1, it is characterized in that: adopt the mode of argon tungsten-arc welding to the welding procedure that tubing welds to be: weld polarity is straight polarity, the height of tungsten electrode and weld seam is at 2 ~ 2.5mm, argon flow amount is at 5 ~ 20l/min, the tungsten electrode diameter is 3.2mm, when the tungsten electrode pointed shape is 15 ~ 50 ° of tapers, when welding current is 0 ~ 95 A, arc voltage is 0 ~ 10.5V, and speed of welding is 0 ~ 1m/min; When welding current is 70 ~ 140 A, arc voltage is 8 ~ 12V, and speed of welding is 1 ~ 2m/min; When welding current is 100 ~ 220 A, arc voltage is 8.5 ~ 12.5V, and speed of welding is 2 ~ 3m/min.
4. the preparation method of described radius-thickness ratio vertical masonry joint titanium or titanium alloy welded tube according to claim 1, it is characterized in that: described online induction annealing Technology for Heating Processing, detailed process is: the titanium welding pipe that welding is good passes load coil online, when passing through alternating current in the induction coil, produce alternating magnetic field, make the welded tube that is in the magnetic field produce the induced potential of same frequency, thereby in workpiece, produce eddy current, take eddy current as main fuel factor is heated to the technique initialization temperature with workpiece, carry out online induction heat treatment.
5. the preparation method of described radius-thickness ratio vertical masonry joint titanium or titanium alloy welded tube according to claim 4; it is characterized in that: the annealing temperature of described online induction annealing Technology for Heating Processing is 550 ~ 700 ℃; inert gas shielding in the annealing process; tubing tapping temperature after the annealing≤100 ℃, annealing speed and speed of production are synchronous.
6. the preparation method of described radius-thickness ratio vertical masonry joint titanium or titanium alloy welded tube according to claim 1, it is characterized in that: the sizing straightener is that the mode of plain-barreled roll and edger roll alternative arrangement forms, permutation and combination method is plain-barreled roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll+edger roll+plain-barreled roll+edger roll, and the gap between plain-barreled roll and edger roll is 20 ~ 30mm.
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| CN113560826A (en) * | 2021-08-13 | 2021-10-29 | 燕山大学 | Welded pipe forming method for comprehensively controlling springback through warm forming and light over bending |
| CN114273457A (en) * | 2021-12-24 | 2022-04-05 | 武汉市博钛新材料科技有限公司 | Production method of superhard titanium alloy high-frequency induction welded pipe |
| CN115464333A (en) * | 2021-12-30 | 2022-12-13 | 武汉市博钛新材料科技有限公司 | TA18 titanium bicycle frame seamless pipe and production process thereof |
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| CN116555603A (en) * | 2023-04-19 | 2023-08-08 | 西部超导材料科技股份有限公司 | Smelting method of TC17 titanium alloy cast ingot |
| CN116555603B (en) * | 2023-04-19 | 2023-11-24 | 西部超导材料科技股份有限公司 | Smelting method of TC17 titanium alloy cast ingot |
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