CN103658183B - A kind of manufacture method of high linearity thin-wall titanium alloy tubing - Google Patents

A kind of manufacture method of high linearity thin-wall titanium alloy tubing Download PDF

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CN103658183B
CN103658183B CN201310660899.5A CN201310660899A CN103658183B CN 103658183 B CN103658183 B CN 103658183B CN 201310660899 A CN201310660899 A CN 201310660899A CN 103658183 B CN103658183 B CN 103658183B
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titanium alloy
linearity
pipe
tubing
thin
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CN103658183A (en
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苏航标
杨英丽
吴金平
罗媛媛
郭荻子
宋飞飞
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Northwest Institute for Non Ferrous Metal Research
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Northwest Institute for Non Ferrous Metal Research
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Abstract

The invention discloses a kind of manufacture method of high linearity thin-wall titanium alloy tubing, the method is: one, carry out cold rolling to titanium alloy pipe, and controlling cold rolling deformation rate is 22% ~ 30%; Two, the titanium alloy pipe after cold rolling is aligned; Three, ingress pipe is set in one end of plug, and delivery line is set at the other end of plug; The plug that four, will be provided with ingress pipe and delivery line inserts in titanium alloy pipe, and makes delivery line be positioned at the port of export of titanium alloy pipe, adopts cold-rolling mill to carry out finished product to titanium alloy pipe cold rolling, obtains tubing; Five, tubing is aligned, obtain high linearity thin-wall titanium alloy tubing.The invention solves the problem that common alloy of titanium tubing linearity is on the low side, achieve the smooth manufacture of high linearity thin-wall titanium alloy seamless tubular goods, the tube surfaces quality manufactured is good, linearity is high, evenness of wall thickness good, can meet the demand of detecting instrument under nuclear reactor or other severe rugged environment.

Description

A kind of manufacture method of high linearity thin-wall titanium alloy tubing
Technical field
The invention belongs to titanium alloy pipe pressure processing technology field, be specifically related to a kind of manufacture method of high linearity thin-wall titanium alloy tubing.
Background technology
Along with the fast development of world industry modernization, the limited property that the raising required along with environment and ecological protection, fossil fuel resource are day by day exhausted, waterpower resourses utilize, nuclear energy obtains larger development as a kind of clean effective energy in China.Development nuclear energy be unable to do without reactor, and the detecting instrument that during reactor operation, needs are accurate detects to ensure its safe and reliable operation at any time.Nuclear detection instrument is the key equipment that reactor operation controls, and its display pipe uses the tubing of high linearity, directly bears harsh environment to avoid detecting instrument.
Titanium alloy is as a kind of good corrosion resistance, and welding performance is excellent, and has good cold and hot working and forming property, and the outsourcing package that therefore titanium alloy is applied to severe rugged environment becomes inexorable trend.
The method preparing titanium pipe is at present a lot, and conventional method has extruding or perforation to prepare pipe then to prepare tubing through tradition mode that is cold rolling or drawing, but there is the problem that linearity cannot ensure.Although the mode of application foil material welding can prepare the higher tubing of linearity, its diameter receives restriction, and general diameter is all less than 30mm, and diameter is greater than to the welded tube of 40mm, and its width also exists technical barrier compared with the foil material preparation of money.Therefore, above method is all not suitable for preparation 0.6mm/3m height linearity thin-wall titanium tubing.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, provides a kind of manufacture method of high linearity thin-wall titanium alloy tubing.The method is by controlling the deformation rate that pony-roughing pass is cold rolling and final pass is cold rolling, three-point bending aligning operation is set after pony-roughing pass is cold rolling, and when final pass is cold rolling, ingress pipe and delivery line are set in plug rear and front end, control diameter and the length of ingress pipe and delivery line simultaneously, with restricted passage aximal deformation value cold rolling go out the free bend effect that produces due to stress of tubing, finally by 7 rollers or 9 rollers aligning, tubing ovality and linearity are adjusted further, finally reach the high linearity requirement that thin-wall pipes is not more than 0.6mm/3m, solve the problem that common alloy of titanium tubing linearity is on the low side, achieve the smooth manufacture of high linearity thin-wall titanium alloy seamless tubular goods, the tube surfaces quality manufactured is good, linearity is high, evenness of wall thickness is good, the demand of detecting instrument under nuclear reactor or other severe rugged environment can be met.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of manufacture method of high linearity thin-wall titanium alloy tubing, and it is characterized in that, the method comprises the following steps:
Step one, carry out cold rolling to titanium alloy pipe, controlling cold rolling deformation rate is 22% ~ 30%;
Step 2, the titanium alloy pipe after cold rolling in step one to be aligned;
Step 3, ingress pipe is set in one end of plug, and delivery line is set at the other end of plug; The external diameter 0.5mm less of the diameter of plug of described delivery line, the external diameter 1mm ~ 2mm less of the diameter of plug of described ingress pipe;
Step 4, by be provided with ingress pipe and delivery line in step 3 plug inserting step two in titanium alloy pipe after aligning, and make delivery line be positioned at the port of export of titanium alloy pipe, adopt cold-rolling mill to carry out finished product to titanium alloy pipe cold rolling, obtain tubing; The cold rolling deformation rate of described finished product is 38% ~ 52%;
Step 5, tubing described in step 4 to be aligned, obtain high linearity thin-wall titanium alloy tubing; Described high linearity thin-wall titanium alloy tubing is seamless tubular goods, and tube wall thickness is 1.0mm ~ 1.5mm, and linearity is not more than 0.6mm/3m, ratio t/D=0.0125 ~ 0.0375 of tube wall thickness t and tube outer diameter D.
The manufacture method of above-mentioned a kind of high linearity thin-wall titanium alloy tubing, the external diameter of the pipe of titanium alloy described in step one is 46mm ~ 89mm, and wall thickness is 2.3mm ~ 3.5mm.
The manufacture method of above-mentioned a kind of high linearity thin-wall titanium alloy tubing, the pipe of titanium alloy described in step one is alpha titanium alloy pipe or beta-titanium alloy pipe.
The manufacture method of above-mentioned a kind of high linearity thin-wall titanium alloy tubing, aligning described in step 2 adopts three-point bending aligning, and the linearity of the titanium alloy pipe after aligning is not more than 4mm/m.
The manufacture method of above-mentioned a kind of high linearity thin-wall titanium alloy tubing, the length of ingress pipe described in step 3 and delivery line is 1000mm ~ 1500mm.
The manufacture method of above-mentioned a kind of high linearity thin-wall titanium alloy tubing, the connected mode of ingress pipe described in step 3 and plug is for welding or being threaded, and the connected mode of described delivery line and plug is for welding or being threaded.
The manufacture method of above-mentioned a kind of high linearity thin-wall titanium alloy tubing, aligns employing 7 roller straightener or 9 roller straighteners described in step 5.
The manufacture method of above-mentioned a kind of high linearity thin-wall titanium alloy tubing, the reduction ratio aligned described in step 5 is 13% ~ 15%.
The manufacture method of above-mentioned a kind of high linearity thin-wall titanium alloy tubing, described in step 5, the external diameter of high linearity thin-wall titanium alloy tubing is 40mm ~ 80mm, and wall thickness deviation is ± 0.05mm.
The present invention compared with prior art has the following advantages:
1, production technology of the present invention is simple, flow process is short, is applicable to the production of titanium alloy height linearity thin-wall titanium seamless tubular goods.
2, the present invention adopts the method for cold rolling, by controlling the deformation rate that pony-roughing pass is cold rolling and final pass is cold rolling, in pony-roughing pass, three-point bending aligning operation is set, and when final pass is cold rolling, ingress pipe and delivery line are set in plug rear and front end, control diameter and the length of ingress pipe and delivery line simultaneously, with restricted passage aximal deformation value cold rolling go out the free bend effect that produces due to stress of tubing, finally by 7 rollers or 9 rollers aligning, tubing ovality and linearity are adjusted further, finally reach the high linearity requirement that thin-wall pipes is not more than 0.6mm/3m.
3, the invention solves the problem that common alloy of titanium tubing linearity is on the low side, achieve the smooth manufacture of high linearity thin-wall titanium alloy seamless tubular goods, the tube surfaces quality of manufacture is good, linearity is high, evenness of wall thickness good.
4, the high linearity titanium alloy seamless tubular goods adopting method of the present invention to prepare, can meet the demand of detecting instrument under nuclear reactor or other severe rugged environment.
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation that titanium alloy pipe of the present invention and plug assemble.
Description of reference numerals:
1-titanium alloy pipe; 2-ingress pipe; 3-guide rod;
4-plug; 5-delivery line.
Detailed description of the invention
Comparative example
Step one, adopt conventional titanium alloy pipe production method, after inside and outside surperficial machining, obtain external diameter is 89 ± 0.2mm, and wall thickness is the titanium alloy pipe of 3.5 ± 0.15mm; Described titanium alloy pipe material is TA2;
Step 2, to adopt LD120 cold pilger mill to carry out a time aximal deformation value to the pipe of titanium alloy described in step one cold rolling, and obtaining external diameter is 83.5 ± 0.2mm, and wall thickness is the titanium alloy pipe of 2.6 ± 0.10mm, and cold roller and deformed rate is about 30%;
Step 3, by the comparatively significantly sweep of the titanium alloy pipe after cold rolling in three-point bending straightening step two, after aligning, linearity reaches 4mm/m;
Step 4, adopt diameter to be the plug 4 of 77mm, adopt LD120 cold pilger mill to carry out finished product cold rolling, obtaining external diameter is 80 ± 0.1mm, and wall thickness is 1.5 ± 0.05mm, and linearity is the TA2 tubing of 3mm/m, and the cold rolling deformation rate of finished product is about 44%;
Step 5, adopt 7 roller straighteners to align tubing described in step 4, controlling reduction ratio is 13%, and obtain linearity and reach 4.5mm/3m, external diameter is 80 ± 0.1mm, and wall thickness is the TA2 tubing of 1.5 ± 0.05mm.
Embodiment 1
Step one, adopt conventional titanium alloy pipe production method, after inside and outside surperficial machining, obtain external diameter is 89 ± 0.2mm, and wall thickness is the titanium alloy pipe of 3.5 ± 0.15mm; Described titanium alloy pipe material is TA2;
Step 2, to adopt LD120 cold pilger mill to carry out a time aximal deformation value to the pipe of titanium alloy described in step one cold rolling, and obtaining external diameter is 83.5 ± 0.2mm, and wall thickness is the titanium alloy pipe of 2.6 ± 0.10mm, and cold roller and deformed rate is about 30%;
Step 3, by the comparatively significantly sweep of the titanium alloy pipe after cold rolling in three-point bending straightening step two, after aligning, linearity reaches 4mm/m;
Step 4, employing diameter is the plug 4 of 77mm, as shown in Figure 1, arranging external diameter in one end of plug 4 is 75mm, length is the ingress pipe 2 of 1000mm, and to arrange external diameter at the other end of plug 4 be 76.5mm, length is the delivery line 5 of 1500mm, by be provided with ingress pipe 2 and delivery line 5 plug 4 inserting step three in titanium alloy pipe 1 after aligning, and make delivery line 5 be positioned at the port of export of titanium alloy pipe, guide rod 3 is connected with plug 4 through ingress pipe 2, it is cold rolling that employing LD120 cold pilger mill carries out finished product, obtaining external diameter is 80 ± 0.1mm, wall thickness is 1.5 ± 0.05mm, linearity is the TA2 tubing of 3mm/m, the cold rolling deformation rate of finished product is about 44%, described ingress pipe is threaded with all employings of plug with plug and delivery line,
Step 5, adopt 7 roller straighteners to align tubing described in step 4, controlling reduction ratio is 13%, and obtain linearity and reach 0.6mm/3m, external diameter is 80 ± 0.1mm, and wall thickness is the TA2 tubing of 1.5 ± 0.05mm.
The present embodiment adopts the method for cold rolling, by the deformation rate that control pony-roughing pass is cold rolling and final pass is cold rolling, three-point bending aligning operation is set in pony-roughing pass, and when final pass is cold rolling, ingress pipe and delivery line are set in plug rear and front end, control diameter and the length of ingress pipe and delivery line simultaneously, with restricted passage aximal deformation value cold rolling go out the free bend effect that produces due to stress of tubing, finally by 7 roller alignings, tubing ovality and linearity are adjusted further, finally reach the high linearity requirement that thin-wall pipes is not more than 0.6mm/3m.Can obviously find out compared with comparative example, the plug adopting the rear and front end of the present embodiment to arrange ingress pipe and delivery line carries out cold rolling, and the free bend effect that can significantly avoid tubing to produce due to stress, linearity reaches requirement.
Embodiment 2
Step one, adopt conventional titanium alloy pipe production method, after inside and outside surperficial machining, obtain external diameter is 89 ± 0.2mm, and wall thickness is the titanium alloy pipe of 2.5 ± 0.15mm; Described titanium alloy pipe material is TA16;
Step 2, to adopt LD120 cold pilger mill to carry out a time aximal deformation value to the pipe of titanium alloy described in step one cold rolling, and obtaining external diameter is 83.5 ± 0.2mm, and wall thickness is the titanium alloy pipe of 2.0 ± 0.10mm, and cold roller and deformed rate is about 25%;
Step 3, by the comparatively significantly sweep of the titanium alloy pipe after cold rolling in three-point bending straightening step two, after aligning, linearity reaches 3mm/m;
Step 4, employing diameter is the plug 4 of 78mm, as shown in Figure 1, arranging external diameter in one end of plug 4 is 76mm, length is the ingress pipe 2 of 1500mm, and to arrange external diameter at the other end of plug 4 be 77.5mm, length is the delivery line 5 of 1500mm, by be provided with ingress pipe 2 and delivery line 5 plug 4 inserting step three in titanium alloy pipe 1 after aligning, and make delivery line 5 be positioned at the port of export of titanium alloy pipe, guide rod 3 is connected with plug 4 through ingress pipe 2, it is cold rolling that employing LD120 cold pilger mill carries out finished product, obtaining external diameter is 80 ± 0.1mm, wall thickness is 1.0 ± 0.05mm, linearity is the TA16 tubing of 3mm/m, the cold rolling deformation rate of finished product is about 52%, all employings of described ingress pipe and plug and delivery line and plug are welded to connect,
Step 5, adopt 9 roller straighteners to align tubing described in step 4, controlling reduction ratio is 15%, and obtain linearity and reach 0.54mm/3m, external diameter is 80 ± 0.1mm, and wall thickness is the TA16 tubing of 1.0 ± 0.05mm.
The present embodiment adopts the method for cold rolling, by the deformation rate that control pony-roughing pass is cold rolling and final pass is cold rolling, three-point bending aligning operation is set in pony-roughing pass, and when final pass is cold rolling, ingress pipe and delivery line are set in plug rear and front end, control diameter and the length of ingress pipe and delivery line simultaneously, with restricted passage aximal deformation value cold rolling go out the free bend effect that produces due to stress of tubing, finally by 9 roller alignings, tubing ovality and linearity are adjusted further, finally reach the high linearity requirement that thin-wall pipes is not more than 0.6mm/3m.
Embodiment 3
Step one, adopt conventional titanium alloy pipe production method, after inside and outside surperficial machining, obtain external diameter is 46 ± 0.2mm, and wall thickness is the titanium alloy pipe of 2.8 ± 0.15mm; Described titanium alloy pipe material is Ti1300;
Step 2, to adopt LD60 cold pilger mill to carry out a time aximal deformation value to the pipe of titanium alloy described in step one cold rolling, and obtaining external diameter is 43 ± 0.2mm, and wall thickness is the titanium alloy pipe of 2.3 ± 0.10mm, and cold roller and deformed rate is about 23%;
Step 3, by the comparatively significantly sweep of the titanium alloy pipe after cold rolling in three-point bending straightening step two, after aligning, linearity reaches 3mm/m;
Step 4, employing diameter is the plug 4 of 37mm, as shown in Figure 1, arranging external diameter in one end of plug 4 is 36mm, length is the ingress pipe 2 of 1500mm, and to arrange external diameter at the other end of plug 4 be 36.5mm, length is the delivery line 5 of 1000mm, by be provided with ingress pipe 2 and delivery line 5 plug 4 inserting step three in titanium alloy pipe 1 after aligning, and make delivery line 5 be positioned at the port of export of titanium alloy pipe, guide rod 3 is connected with plug 4 through ingress pipe 2, it is cold rolling that employing LD60 cold pilger mill carries out finished product, obtaining external diameter is 40 ± 0.1mm, wall thickness is 1.5 ± 0.05mm, linearity is the Ti1300 tubing of 1mm/m, the cold rolling deformation rate of finished product is about 38%, described ingress pipe is threaded with all employings of plug with plug and delivery line,
Step 5, adopt 7 roller straighteners to align tubing described in step 4, controlling reduction ratio is 14%, and obtain linearity and reach 0.54mm/3m, external diameter is 40 ± 0.1mm, and wall thickness is the Ti1300 tubing of 1.5 ± 0.05mm.
The present embodiment adopts the method for cold rolling, by the deformation rate that control pony-roughing pass is cold rolling and final pass is cold rolling, three-point bending aligning operation is set in pony-roughing pass, and when final pass is cold rolling, ingress pipe and delivery line are set in plug rear and front end, control diameter and the length of ingress pipe and delivery line simultaneously, with restricted passage aximal deformation value cold rolling go out the free bend effect that produces due to stress of tubing, finally by 7 roller alignings, tubing ovality and linearity are adjusted further, finally reach the high linearity requirement that thin-wall pipes is not more than 0.6mm/3m.
Embodiment 4
Step one, adopt conventional titanium alloy pipe production method, after inside and outside surperficial machining, obtain external diameter is 46 ± 0.2mm, and wall thickness is the titanium alloy pipe of 2.3 ± 0.15mm; Described titanium alloy pipe material is TA18;
Step 2, to adopt LD60 cold pilger mill to carry out a time aximal deformation value to the pipe of titanium alloy described in step one cold rolling, and obtaining external diameter is 43 ± 0.2mm, and wall thickness is the titanium alloy pipe of 1.9 ± 0.10mm, and cold roller and deformed rate is about 22%;
Step 3, by the comparatively significantly sweep of the titanium alloy pipe after cold rolling in three-point bending straightening step two, after aligning, linearity reaches 3mm/m;
Step 4, employing diameter is the plug 4 of 38mm, as shown in Figure 1, arranging external diameter in one end of plug 4 is 36mm, length is the ingress pipe 2 of 1500mm, and to arrange external diameter at the other end of plug 4 be 37.5mm, length is the delivery line 5 of 1200mm, by be provided with ingress pipe 2 and delivery line 5 plug 4 inserting step three in titanium alloy pipe 1 after aligning, and make delivery line 5 be positioned at the port of export of titanium alloy pipe, guide rod 3 is connected with plug 4 through ingress pipe 2, it is cold rolling that employing LD60 cold pilger mill carries out finished product, obtaining external diameter is 40 ± 0.1mm, wall thickness is 1.0 ± 0.05mm, linearity is the TA18 tubing of 1.2mm/m, the cold rolling deformation rate of finished product is about 50%, described ingress pipe is threaded with all employings of plug with plug and delivery line,
Step 5, adopt 7 roller straighteners to align tubing described in step 4, controlling reduction ratio is 13%, and obtain linearity and reach 0.55mm/3m, external diameter is 40 ± 0.1mm, and wall thickness is the TA18 tubing of 1.0 ± 0.05mm.
The present embodiment adopts the method for cold rolling, by the deformation rate that control pony-roughing pass is cold rolling and final pass is cold rolling, three-point bending aligning operation is set in pony-roughing pass, and when final pass is cold rolling, ingress pipe and delivery line are set in plug rear and front end, control diameter and the length of ingress pipe and delivery line simultaneously, with restricted passage aximal deformation value cold rolling go out the free bend effect that produces due to stress of tubing, finally by 7 roller alignings, tubing ovality and linearity are adjusted further, finally reach the high linearity requirement that thin-wall pipes is not more than 0.6mm/3m.
Embodiment 5
Step one, adopt conventional titanium alloy pipe production method, after inside and outside surperficial machining, obtain external diameter is 68 ± 0.2mm, and wall thickness is the titanium alloy pipe of 3.5 ± 0.15mm; Described titanium alloy pipe material is TA18;
Step 2, to adopt LD60 cold pilger mill to carry out a time aximal deformation value to the pipe of titanium alloy described in step one cold rolling, and obtaining external diameter is 65.5 ± 0.2mm, and wall thickness is the titanium alloy pipe of 2.6 ± 0.10mm, and cold roller and deformed rate is about 28%;
Step 3, by the comparatively significantly sweep of the titanium alloy pipe after cold rolling in three-point bending straightening step two, after aligning, linearity reaches 3mm/m;
Step 4, employing diameter is the plug 4 of 57.2mm, as shown in Figure 1, arranging external diameter in one end of plug 4 is 56.2mm, length is the ingress pipe 2 of 1200mm, and to arrange external diameter at the other end of plug 4 be 56.7mm, length is the delivery line 5 of 1200mm, by be provided with ingress pipe 2 and delivery line 5 plug 4 inserting step three in titanium alloy pipe 1 after aligning, and make delivery line 5 be positioned at the port of export of titanium alloy pipe, guide rod 3 is connected with plug 4 through ingress pipe 2, it is cold rolling that employing LD60 cold pilger mill carries out finished product, obtaining external diameter is 60 ± 0.1mm, wall thickness is 1.4 ± 0.05mm, linearity is the TA18 tubing of 1.2mm/m, the cold rolling deformation rate of finished product is about 50%, described ingress pipe is threaded with all employings of plug with plug and delivery line,
Step 5, adopt 9 roller straighteners to align tubing described in step 4, controlling reduction ratio is 14%, and obtain linearity and reach 0.55mm/3m, external diameter is 60 ± 0.1mm, and wall thickness is the TA18 tubing of 1.4 ± 0.05mm.
The present embodiment adopts the method for cold rolling, by the deformation rate that control pony-roughing pass is cold rolling and final pass is cold rolling, three-point bending aligning operation is set in pony-roughing pass, and when final pass is cold rolling, ingress pipe and delivery line are set in plug rear and front end, control diameter and the length of ingress pipe and delivery line simultaneously, with restricted passage aximal deformation value cold rolling go out the free bend effect that produces due to stress of tubing, finally by 9 roller alignings, tubing ovality and linearity are adjusted further, finally reach the high linearity requirement that thin-wall pipes is not more than 0.6mm/3m.
The above; it is only preferred embodiment of the present invention; not any restriction is done to the present invention, every above embodiment is done according to invention technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.

Claims (8)

1. a manufacture method for high linearity thin-wall titanium alloy tubing, it is characterized in that, the method comprises the following steps:
Step one, carry out cold rolling to titanium alloy pipe, controlling cold rolling deformation rate is 22% ~ 30%;
Step 2, the titanium alloy pipe after cold rolling in step one to be aligned;
Step 3, ingress pipe (2) is set in one end of plug (4), and delivery line (5) is set at the other end of plug (4); The external diameter 0.5mm less of the diameter of plug (4) of described delivery line (5), the external diameter 1mm ~ 2mm less of the diameter of plug (4) of described ingress pipe (2); The length of described ingress pipe (2) and delivery line (5) is 1000mm ~ 1500mm;
Step 4, by be provided with ingress pipe (2) and delivery line (5) in step 3 plug (4) inserting step two in titanium alloy pipe (1) after aligning, and make delivery line (5) be positioned at the port of export of titanium alloy pipe (1), adopt cold-rolling mill to carry out finished product to titanium alloy pipe cold rolling, obtain tubing; The cold rolling deformation rate of described finished product is 38% ~ 52%;
Step 5, tubing described in step 4 to be aligned, obtain high linearity thin-wall titanium alloy tubing; Described high linearity thin-wall titanium alloy tubing is seamless tubular goods, and tube wall thickness is 1.0mm ~ 1.5mm, and linearity is not more than 0.6mm/3m, ratio t/D=0.0125 ~ 0.0375 of tube wall thickness t and tube outer diameter D.
2. the manufacture method of a kind of high linearity thin-wall titanium alloy tubing according to claim 1, it is characterized in that, the external diameter of the pipe of titanium alloy described in step one is 46mm ~ 89mm, and wall thickness is 2.3mm ~ 3.5mm.
3. the manufacture method of a kind of high linearity thin-wall titanium alloy tubing according to claim 1, it is characterized in that, the pipe of titanium alloy described in step one is alpha titanium alloy pipe or beta-titanium alloy pipe.
4. the manufacture method of a kind of high linearity thin-wall titanium alloy tubing according to claim 1, is characterized in that, aligning described in step 2 adopts three-point bending aligning, and the linearity of the titanium alloy pipe after aligning is not more than 4mm/m.
5. the manufacture method of a kind of high linearity thin-wall titanium alloy tubing according to claim 1, it is characterized in that, the connected mode of ingress pipe described in step 3 (2) and plug (4) is for welding or being threaded, and the connected mode of described delivery line (5) and plug (4) is for welding or being threaded.
6. the manufacture method of a kind of high linearity thin-wall titanium alloy tubing according to claim 1, is characterized in that, align employing 7 roller straightener or 9 roller straighteners described in step 5.
7. the manufacture method of a kind of high linearity thin-wall titanium alloy tubing according to claim 1, it is characterized in that, the reduction ratio aligned described in step 5 is 13% ~ 15%.
8. the manufacture method of a kind of high linearity thin-wall titanium alloy tubing according to claim 1, it is characterized in that, described in step 5, the external diameter of high linearity thin-wall titanium alloy tubing is 40mm ~ 80mm, and wall thickness deviation is ± 0.05mm.
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