CN108213865A - A kind of tensile strength>The manufacturing method of the titanium alloy seamless tube blank of 400MPa - Google Patents
A kind of tensile strength>The manufacturing method of the titanium alloy seamless tube blank of 400MPa Download PDFInfo
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- CN108213865A CN108213865A CN201711428406.XA CN201711428406A CN108213865A CN 108213865 A CN108213865 A CN 108213865A CN 201711428406 A CN201711428406 A CN 201711428406A CN 108213865 A CN108213865 A CN 108213865A
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- titanium alloy
- rod bar
- tube blank
- seamless tube
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses a kind of tensile strength>The manufacturing method of the titanium alloy seamless tube blank of 400MPa, uniform wall thickness, even tissue and flawless.A kind of tensile strength>The manufacturing method of the titanium alloy seamless tube blank of 400MPa, includes the following steps：A, it forges and titanium alloy rod bar is made；B, titanium alloy seamless tube blank is made in trepanning in titanium alloy rod bar made from step A；Wherein, in step B, it is perforated on the titanium alloy bar by electric spark the wire hole for being formed and penetrating through the titanium alloy rod bar in an axial direction, the wire electrode of energization is penetrated in the wire hole, make the two relative motion along setting path traveling electrode silk or rotation titanium alloy rod bar and a cylinder is cut into titanium alloy rod bar, titanium alloy rod bar after cutting is the titanium alloy seamless tube blank for forming hollow tubular, and the axial line of plane and titanium alloy rod bar residing for the circle for setting path and being located on titanium alloy rod bar axial line as the center of circle and the circle is mutually perpendicular to.
Description
Technical field
The invention belongs to titanium alloy seamless tube blank manufacturing field, more particularly to a kind of tensile strength as cold rolling pipe>
The manufacturing method of the titanium alloy seamless tube blank of 400MPa.
Background technology
The titanium alloy tube that titanium alloy seamless tube blank is manufactured by cold rolling（Such as TA18 titanium alloy tubes, TC4 titanium alloy tubes）It is wide
It is general to be used as aviation tubing and medical tubing, there is larger application demand in aviation and medical field.In the prior art, for cold rolling
The wall that subtracts of titanium alloy seamless tube blank mainly has two methods of extrusion forming and roll piercing.Wherein, the method for extrusion forming
Belong to hot-working method, the pipe head that processes, in, the institutional framework of three sections of tail it is different, i.e. pipe nonuniform organization；It is and oblique
The pipe that processes of perforation is rolled there are the defects of tensile stress crackle, and can generate inclined wall phenomenon, above-mentioned hot-working method
There are similar defects.
Invention content
In view of the above-mentioned problems, the object of the present invention is to provide a kind of tensile strength>The titanium alloy seamless tube blank of 400MPa
Manufacturing method, uniform wall thickness, even tissue and flawless.
In order to achieve the above objectives, the technical solution adopted by the present invention is：
A kind of tensile strength>The manufacturing method of the titanium alloy seamless tube blank of 400MPa, includes the following steps：
A, it forges and titanium alloy rod bar is made；
B, titanium alloy seamless tube blank is made in trepanning in titanium alloy rod bar made from step A；
Wherein, in step B, perforate to be formed on the titanium alloy bar by electric spark penetrates through the titanium alloy rod bar in an axial direction
Wire hole penetrates the wire electrode of energization in the wire hole, makes along setting path traveling electrode silk or rotation titanium alloy rod bar
The two relative motion and a cylinder is cut into titanium alloy rod bar, the titanium alloy rod bar after cutting i.e. form hollow tubular
Titanium alloy seamless tube blank, plane residing for the circle for setting path and being located on titanium alloy rod bar axial line as the center of circle and the circle with
The axial line of titanium alloy rod bar is mutually perpendicular to.
In some embodiments, in step B, the ratio between outer diameter and thickness of the titanium alloy seamless tube blank are less than 5.
In some embodiments, it in step B, is chosen on the end face of titanium alloy rod bar a little as punch position, it is described
Punch position deviates titanium alloy rod bar axial line a distance；Pass through electric-spark drilling in the punch position.
In some embodiments, in step A, titanium alloy ingot pulls out forging after β phase regions cogging forging in alpha+beta phase region cross pier
Make the obtained titanium alloy rod bar.
In some embodiments, in step A, the titanium alloy ingot is by super zero level titanium sponge and aluminum-vanadium alloy in multiple melting
After be made.
In some embodiments, in step A, the titanium alloy ingot carries out AA grades and surpasses after alpha+beta phase region cross pier pulls out forging
Sonic flaw detection is used as the titanium alloy rod bar after qualified.
In some embodiments, it is stronger than the tension for 1.3-3.5 to be used as manufacture contraction strain for the titanium alloy seamless tube blank
Spend the pipe of the seamless titanium alloy pipe of ＞ 862MPa.
In some embodiments, the titanium alloy pipe is used as the pipe of manufacture aviation liquid pipeline system titanium alloy tube.
In some embodiments, the outer diameter of the titanium alloy pipe is more than 35mm.
The present invention is had the following advantages that compared with prior art using above-mentioned technical proposal：
Using forging bar, and titanium alloy seamless pipe is manufactured by penetrating the method for wire electrode trepanning in bar is forged
Base, titanium alloy pipe uniform wall thickness obtained, even tissue and flawless；It can be used as aviation liquid pipeline system titanium alloy tube
Cold rolling pipe, the titanium alloy tube obtained by the titanium alloy pipe cold rolling meet the requirement of hydraulic air pipe-line system.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment including technology description in
Attached drawing to be used is needed to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other deformation attached drawings all within protection scope of the present invention.
Attached drawing 1 is the flow chart according to a kind of manufacturing method of titanium alloy seamless tube blank of the present invention.
Specific embodiment
The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be understood by the person skilled in the art.
The present embodiment provides a kind of tensile strength>The manufacturing method of the titanium alloy seamless tube blank of 400MPa, the manufacturing method
By forging titanium alloy rod bar and in bar, two steps of trepanning form, and titanium alloy seamless tube blank obtained is suitable as cold rolled tube
Base, that is, the titanium available for hydraulic air pipe-line system or medical line system is made in the titanium alloy seamless tube blank after cold rolling
Alloy pipe has the advantages that uniform wall thickness, even tissue and flawless.
With reference to shown in attached drawing 1, which realizes especially by following flow：
S1, titanium alloy ingot is made in super zero level titanium sponge and the multiple melting of aluminum-vanadium alloy；
S2, titanium alloy rod bar is made in titanium alloy ingot forging；
S3, titanium alloy pipe is formed after being cut into a cylinder by electric machining trepanning in titanium alloy rod bar center.
It is specific to pass through melting three times in step S1.
Step S2 is specifically included：First titanium alloy ingot made from step S1 is forged in the cogging of β phase regions, then in alpha+beta phase region
It carries out cross pier and pulls out the obtained forging bar of forging, AA grades of ultrasonic examinations are carried out to it, step S3 is performed after flaw detection is qualified.Its
In, it carries out cross pier in alpha+beta phase region and pulls out forging, form tiny equiaxed structure, titanium alloy rod bar even tissue obtained.Cross
Pier is pulled out forging and specifically refers to the forging technology pulled out again later to titanium alloy ingot jumping-up using cross forging shaft, tiny conducive to being formed
Equiaxed structure.
Step S3 is specifically included：
S31, it is chosen on the end face of titanium alloy rod bar a little as punch position, which is preferably offset by titanium alloy rod bar
Axial line a distance；
S32, in the punch position by electric-spark drilling, formed along titanium alloy rod bar and wear silk axially through titanium alloy rod bar
Hole；
S33, wire electrode is penetrated in the wire hole, which is connected with power supply to be powered, and power supply can be the pulse power；
S34, make the two relative motion along setting path traveling electrode silk or rotation titanium alloy rod bar and cut in titanium alloy rod bar
A cylinder is cut out, the titanium alloy rod bar after cutting forms the titanium alloy seamless tube blank of hollow tubular, the setting path
The axial line of plane and titanium alloy rod bar residing for the circle and the circle being located on titanium alloy rod bar axial line for the center of circle is mutually perpendicular to, quilt
The cylinder being cut into is coaxial with titanium alloy seamless tube blank.For example, it keeps titanium alloy rod bar fixed and makes wire electrode around titanium
Alloy bar material axial line circles or keeps wire electrode fixed and titanium alloy rod bar is made to be rotated around its axial line.Base
Present principles are to make wire electrode using the fine wire of continuous moving, titanium alloy rod bar is carried out pulse spark electric discharge removal metal,
Excision forming.In the present embodiment, preferably wire electrode makees low speed one-way movement, and general wire travelling speed is less than 0.2m/s.After cutting
The titanium alloy seamless tube blank internal rule of formation, deviation is smaller, and inclined wall phenomenon can be reduced or eliminated；And removed cylinder can be made
To be used for the titanium alloy bar of other purposes, reduction waste is cost-effective.
It should also be noted that, the distance for the punch position and titanium alloy rod bar outer circumference surface selected in step S31 is less than
/ 5th of outer alloy bar material diameter, so that cutting the radius-thickness ratio of the titanium alloy seamless tube blank of formation in step S34（Outside
Diameter：Thickness）Less than 5.The outer diameter of titanium alloy pipe is more than 35mm.Specially 35-70mm.
The embodiment also provides a kind of manufacturing method of titanium alloy tube, which includes above-mentioned steps S1, S2, S31-
S34 further includes step S5：It is titanium alloy tube by titanium alloy seamless tube blank cold roll forming made from step S34.By the titanium alloy without
Slit-tube base can manufacture CSR（Contraction strain ratio）The seamless titanium alloy pipe of tensile strength ＞ 862MPa between 1.3-3.5.The titanium
Alloy pipe stock is for cold rolling manufacture TA18 titanium alloy tubes or TC4 titanium alloy tubes.
According to《Pipe standards that AMS4946 TA18 titanium alloys are seamless》The TA18 titaniums of φ 70mm manufactured by the above method are closed
The mechanical property of golden seamless tube blank is tested, and test result is shown in Table 1.
1 titanium alloy seamless tube blank mechanical property of table
As can be seen from the above table, titanium alloy seamless tube blank made from manufacturing method using the present invention, which meets in AMS4946, advises
Fixed standard, especially elongation percentage are far above the specified value in standard, and under equality strength, elongation percentage is to weigh titanium alloy tube
The critical data of base.
The above embodiments merely illustrate the technical concept and features of the present invention, is a kind of preferred embodiment, and purpose exists
In allowing person skilled in the art that can understand present disclosure and implementing according to this, the guarantor of the present invention can not be limited with this
Protect range.The equivalent change or modification that all Spirit Essences according to the present invention are made, should all cover in protection scope of the present invention
Within.
Claims (9)
1. a kind of tensile strength>The manufacturing method of the titanium alloy seamless tube blank of 400MPa, which is characterized in that include the following steps：
A, it forges and titanium alloy rod bar is made；
B, titanium alloy seamless tube blank is made in trepanning in titanium alloy rod bar made from step A；
Wherein, in step B, perforate to be formed on the titanium alloy bar by electric spark penetrates through the titanium alloy rod bar in an axial direction
Wire hole penetrates the wire electrode of energization in the wire hole, makes along setting path traveling electrode silk or rotation titanium alloy rod bar
The two relative motion and a cylinder is cut into titanium alloy rod bar, the titanium alloy rod bar after cutting i.e. form hollow tubular
Titanium alloy seamless tube blank, plane residing for the circle for setting path and being located on titanium alloy rod bar axial line as the center of circle and the circle with
The axial line of titanium alloy rod bar is mutually perpendicular to.
2. the manufacturing method of titanium alloy seamless tube blank according to claim 1, which is characterized in that in step B, the titanium closes
The ratio between outer diameter and thickness of golden seamless tube blank are less than 5.
3. the manufacturing method of titanium alloy seamless tube blank according to claim 1, which is characterized in that in step B, in titanium alloy
It is chosen on the end face of bar a little as punch position, the punch position deviates titanium alloy rod bar axial line a distance；
The punch position passes through electric-spark drilling.
4. the manufacturing method of titanium alloy seamless tube blank according to claim 1, which is characterized in that in step A, titanium alloy ingot
After β phase regions cogging forging, pull out forging in alpha+beta phase region cross pier and the titanium alloy rod bar is made.
5. the manufacturing method of titanium alloy seamless tube blank according to claim 4, which is characterized in that in step A, the titanium closes
Ingot is made by super zero level titanium sponge and aluminum-vanadium alloy after multiple melting.
6. the manufacturing method of titanium alloy seamless tube blank according to claim 4, which is characterized in that in step A, the titanium closes
Ingot carries out AA grades of ultrasonic examinations, the titanium alloy rod bar is used as after qualified after alpha+beta phase region cross pier pulls out forging.
7. the manufacturing method of titanium alloy seamless tube blank according to claim 1, which is characterized in that the titanium alloy seamless pipe
Base is used as pipe of the manufacture contraction strain than the seamless titanium alloy pipe of the tensile strength ＞ 862MPa for 1.3-3.5.
8. the manufacturing method of the titanium alloy seamless tube blank according to claim 1 or 7, which is characterized in that the titanium alloy tube
Base is used as the pipe of manufacture aviation liquid pipeline system titanium alloy tube.
9. the manufacturing method of titanium alloy seamless tube blank according to claim 1, which is characterized in that the titanium alloy pipe
Outer diameter is more than 35mm.
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| CN201711428406.XA CN108213865A (en) | 2017-12-26 | 2017-12-26 | A kind of tensile strength>The manufacturing method of the titanium alloy seamless tube blank of 400MPa |
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Cited By (3)
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| CN111203453A (en) * | 2020-01-13 | 2020-05-29 | 成都先进金属材料产业技术研究院有限公司 | Method for producing small-caliber TA18 titanium alloy seamless tube |
| CN111530962A (en) * | 2020-05-14 | 2020-08-14 | 成都先进金属材料产业技术研究院有限公司 | Production method for small-caliber thick-wall titanium alloy seamless pipe |
| CN112518090A (en) * | 2020-10-20 | 2021-03-19 | 包头钢铁（集团）有限责任公司 | Method for preventing end of seamless pipe from being folded inwards |
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