CN107457279B - A kind of titanium alloy barrel body class part gas ket circle manufacturing process - Google Patents
A kind of titanium alloy barrel body class part gas ket circle manufacturing process Download PDFInfo
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- CN107457279B CN107457279B CN201710661249.0A CN201710661249A CN107457279B CN 107457279 B CN107457279 B CN 107457279B CN 201710661249 A CN201710661249 A CN 201710661249A CN 107457279 B CN107457279 B CN 107457279B
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- blank
- circle
- titanium alloy
- barrel body
- lower mold
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D5/10—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The present invention relates to a kind of titanium alloy barrel body class part gas ket circle manufacturing process, in particular to a kind of method applied to titanium alloy cylinder and the circle forming of taper cone barrel gas ket, i.e. a kind of method applied to circle circle forming under titanium alloy cylinder and circular cone barrel part Warm status, it is suitable under Warm status bending titanium alloy blank circle circle into cylinder or circular cone barrel part, belongs to titanium alloy field shaping technique.When preparing titanium alloy barrel body class part using this method, because of rebound caused by titanium alloy self performance when can effectively avoid cold forming, improve the efficiency of cylinder class part circle circle forming, improve part circle circle quality, part subsequent processing operations are less after forming, forming process influences small, part corrugationless after circle circle on surface quality of workpieces.
Description
Technical field
It is the present invention relates to a kind of titanium alloy barrel body class part gas ket circle manufacturing process, in particular to a kind of to be applied to titanium alloy
The method of cylinder and the circle forming of taper cone barrel gas ket, i.e., it is a kind of be applied to enclose under titanium alloy cylinder and circular cone barrel part Warm status circle at
The method of shape, it is suitable under Warm status bending titanium alloy blank circle circle into cylinder or circular cone barrel part, belong to titanium alloy at
Type technical field.
Background technique
For titanium alloy as more commonly used metal material a kind of in aerospace industry, cold formability can difference always life
The major issue faced in test is produced, when especially shaping common cylinder and cone tube kind part, titanium alloy after conventional cold forming
The rebound of generation leads to the plastic deformation very little actually occurred, it has to multi-pass iterative process process, longevity of service, efficiency
It is low, and final forming quality is not high.
Summary of the invention
Technology of the invention solves the problems, such as: overcome the deficiencies in the prior art, proposes a kind of titanium alloy barrel body class part heat
Enclose circle manufacturing process.
The technical solution of the invention is as follows:
A kind of the step of titanium alloy barrel body class part gas ket circle manufacturing process, this method includes:
(1) prepare blank；
The blank includes processing main body and the fixed part positioned at processing main body top and bottom end, the processing master
The geomery of body is consistent with the expansion shape size of titanium alloy barrel body class part to be formed, and the fixed part refers in base
Each reserved remaining side not less than 20mm on the top of the processing main body of material and bottom end short transverse；
(2) prepare mold, the mold includes upper mold and lower mold, and the lower mold has forming surface；
The radian of the forming surface of the lower mold is consistent with the molding radian of titanium alloy barrel body class part to be formed, molding
The length of face axis direction is consistent with the height of blank is prepared in step (1), the width of forming surface and titanium alloy barrel body to be formed
The one-pass molding equivalent width of class part；
The upper mold has the pressurized plane to match with the forming surface of the lower mold；
(3) blank prepared step (1) is surface-treated, the forming surface of lower mold that prepare step (2) and upper
The pressurized plane of mold is surface-treated；
(4) the lower mold after being surface-treated to step (3) heats；
(5) blank after being surface-treated step (3) is fixed on lower mold by the fixed part at blank both ends
Forming surface on, the pressurized plane of upper mold is then closed into the upper surface of blank and is pressurizeed to blank, is completed after pressurization
One-pass molding process；
(6) upper mold is lifted, adjusts blank in the direction of the width, next one-pass molding process is carried out to blank, until
In a free state, the distance of blank two sides is not more than 20mm；
(7) blank that step (6) is obtained welded after being surface-treated, school shape and excision remainder punching, obtain titanium conjunction
Golden cylinder class part.
The titanium alloy barrel body class part is titanium alloy cylinder or titanium alloy cone cylinder, and titanium alloy barrel body class part
Height is not more than 1.5m, and diameter is not less than 200mm.
In the step (1), multiple locating notches are provided on top fixed part and bottom end fixed part, and be located at
Locating notch on the fixed part on top is corresponding with the locating notch of fixed part of bottom end is located at, and corresponding two
Locating notch is a pair of of locating notch.
When the draw ratio of titanium alloy barrel body class part is more than or equal to 3, the quantity of locating notch is 10-15 pairs.
When the draw ratio of titanium alloy barrel body class part is less than 3, the quantity of locating notch is 6-9 pairs.
In the step (2), the both ends of lower mold have positioning pin, and blank is fixed on by positioning pin and locating notch
On lower mold.
In the step (3), method that blank is surface-treated are as follows: progress surface fluorescence detection first, confirmation
Ti-1 solution, the method being surface-treated to the forming surface of lower mold are as follows: physics cleaning first are sprayed on surface after zero defect
Then spraying graphite solvent.
In the step (4), the temperature heated to lower mold is 650 DEG C~750 DEG C, soaking time 30-
60min。
In the step (5), under pressure to blank, single pressure be 15-40 τ, dwell time 15-20min,
The temperature of lower mold is 650 DEG C~750 DEG C.
In the step (5) and step (6), blank is fixed in the forming surface of lower mold and blank is adjusted
Sequence, that is, blank when whole carries out the order of circle circle are as follows: most marginal a pair of of the locating notch in circle round billet material one side and circle circle first
Most marginal a pair of of the locating notch in blank another side, then encloses a pair of of locating notch in round billet material bosom, finally from bosom
A pair of of locating notch gradually gradually carry out circle circle to the locating notch on both sides.
Advantages of the present invention: when preparing titanium alloy barrel body class part using this method, because of titanium when can effectively avoid cold forming
Rebound caused by alloy self performance improves the efficiency of cylinder class part circle circle forming, improves part circle circle quality, after forming
Part subsequent processing operations are less, and forming process influences small, part corrugationless after circle circle on surface quality of workpieces.
Detailed description of the invention
Fig. 1 is the geomery schematic diagram of blank in embodiment；
Fig. 2 is the structural schematic diagram of lower mold in embodiment.
Specific embodiment
A kind of titanium alloy barrel body class part gas ket circle manufacturing process, the titanium alloy barrel body class part are titanium alloy cylinder
Or titanium alloy cone cylinder, the step of this method, include:
Step 1, blanking process, according to part size calculate required for billet size, formation of parts height 1.5m with
Under, cylinder or circular cone barrel part of the diameter in 200mm or more, the corresponding each reserved 25mm surplus of blank both ends short transverse, for
Draw ratio δ is more than or equal to 3 part, and the quantity of locating notch should be at 12 pairs or so, part for draw ratio less than 3, positioning
The quantity of notch should be at 9 pairs or so；
Step 2, preparation process are cleared up after confirming zero defect according to calculating blank under size and carrying out surface fluorescence detection
Piece surface simultaneously sprays Ti-1 solution, cleaning die surface and spraying graphite solvent；
Step 3, temperature-rise period, heating mould arrive heat insulation mould 30min or more after temperature to 650 DEG C~750 DEG C, and mold needs
Multi-point temperature measurement is wanted, guarantees that mold temperature is uniform, circle process is enclosed and persistently keeps heating；
Step 4 bends and encloses circle forming process, is closed after the corresponding locating notch in blank both ends is inserted in die positioning pin
Upper/lower die simultaneously pressurizes, and single pressure is 15-20min in 15-40 τ, heat-insulation pressure keeping time, adjusts blank after pressure maintaining, allows
Another pair locating notch is inserted in die positioning pin, repeats to mold pressure process, until under free state, blank material both ends distance is not
Greater than 20mm；
Step 5, temperature maintenance process reheat mold and arrive Wen Houbao if enclosing circle process mold temperature reduces
Warm 30min；
Step 6 encloses circle order requirements, and blank first bends the corresponding region of blank two sides locating notch, then fixed from centre
Position notch gradually gradually bends circle circle to two sides；
Step 7, last handling process collapse pickling to cylinder alkali after cleaning gas ket circle rear cylinder body piece surface after the completion of forming,
School shape and excision remainder punching after welding.
Highly preferred embodiment of the present invention is described in further detail with reference to the accompanying drawing.
Embodiment
The material of titanium alloy taper barrel part is TA15 titanium alloy, and taper cone barrel both ends diameter is respectively 280mm and 320mm,
Part height is 800mm, wall thickness 2mm, it is desirable that after circle circle piece surface do not crack, scratch, blank do not generate fold, finally
Blank both ends distance is not more than 20mm under free state；
Specific real-time mode is carried out by following processing step:
(1) prepare blank；
The blank includes processing main body and the fixed part positioned at processing main body top and bottom end, the processing master
The geomery of body is consistent with the expansion shape size of titanium alloy barrel body class part to be formed, and the fixed part refers in base
Each reserved remaining side not less than 20mm on the top of the processing main body of material and bottom end short transverse；The quantity of Design Orientation notch is
9 pairs, as shown in Figure 1；Blank is cut by laser out according to billet size is calculated；
(2) prepare mold, the mold includes upper mold and lower mold, and the lower mold has forming surface, molding
With the positioning pin to match with locating notch on face；
As shown in Fig. 2, the molding arc of the radian of the forming surface of the lower mold and titanium alloy barrel body class part to be formed
Degree is consistent, and the length of forming surface is consistent with the height of blank is prepared in step (1), the width of forming surface and titanium alloy cylinder to be formed
The one-pass molding equivalent width of body class part；
The upper mold has the pressurized plane to match with the forming surface of the lower mold；
(3) fluorescence detection is carried out to the blank surface that step (1) prepares, after confirming zero defect, clears up parts list with alcohol
Face simultaneously sprays Ti-1 solution, prevents part from aoxidizing, and the forming surface of lower mold and the pressurized plane of upper mold prepare step (2) is used
Alcohol clears up surface and spraying graphite solvent, it is desirable that takes out die surface hard spot, cannot be more than containing diameter in graphite solvent
1.5mm particulate matter；
(4) the lower mold after being surface-treated to step (3) carries out being heated to 750 DEG C, keeps the temperature lower mold after arriving temperature
30min or more, lower mold multiposition insert thermocouple temperature measurement, enclose circle process and persistently keep heating；
(5) bend and enclose circle forming process: the blank after step (3) is surface-treated passes through the fixation at blank both ends
Partial locating notch 1 is slowly closed upper/lower die and pressurizes after being inserted on the positioning pin of lower mold, single pressure is 30 τ, is protected
The warm dwell time is 15min；
(6) upper mold is lifted after pressure maintaining, adjusts blank in the direction of the width, and locating notch 2 is inserted in lower mold
It is slowly closed upper/lower die after on positioning pin and pressurizes, single pressure is 30 τ, and the heat-insulation pressure keeping time is 15min, is carried out to blank
Then next one-pass molding process successively carries out blank according to the sequence of locating notch 3-4-5-6-7-8-9 bending circle circle
Forming process, bending blank after enclosing circle forming process, in a free state, the distance of blank two sides is 18mm；
(7) blank obtained to step (6) carries out surface alkali and collapses after pickling processes welding longitudinal joint then school shape and more than cutting off
Amount, obtains titanium alloy barrel body class part, obtained piece surface does not crack, scratch and blank do not generate fold.
As shown in Fig. 2, lower mold in the step (2) is a cylindrical body, the top surface of cylindrical body be processed into at
The consistent cambered surface of molding radian of the titanium alloy taper barrel part of type, and respectively have a positioning pin at the both ends of the cambered surface；Cylinder
The center of body processes the cavity that a cross section is " C " type, and the cavity for being somebody's turn to do " C " type is used for base during blank is adjusted
Material holds space, and the open end for being somebody's turn to do the cavity of " C " type is sealed using a block, the block when processing to blank
Body seals the open end in the cavity of " C " type, holds base in the space expected between the cavity and block of " C " type, when right
Blank carries out after bending circle circle, block is removed from the open end in the cavity of " C " type, then by the base after machine-shaping
It removes the open end in cavity of the material from the lower mold along " C " type of being somebody's turn to do.
Claims (4)
1. a kind of titanium alloy barrel body class part gas ket circle manufacturing process, it is characterised in that the step of this method includes:
(1) prepare blank；
The blank includes processing main body and the fixed part positioned at processing main body top and bottom end, the processing main body
Geomery is consistent with the expansion shape size of titanium alloy barrel body class part to be formed, and the fixed part refers in blank
Process each reserved remaining side not less than 20mm on the top and bottom end short transverse of main body；
(2) prepare mold, the mold includes upper mold and lower mold, and the lower mold has forming surface；
The radian of the forming surface of the lower mold is consistent with the molding radian of titanium alloy barrel body class part to be formed, forming surface axis
The length in line direction is consistent with the height of blank is prepared in step (1), the width of forming surface and titanium alloy barrel body class zero to be formed
The one-pass molding equivalent width of part；
The upper mold has the pressurized plane to match with the forming surface of the lower mold；
(3) blank prepared step (1) is surface-treated, to the forming surface and upper mold of the lower mold that step (2) prepare
Pressurized plane be surface-treated；
(4) the lower mold after being surface-treated to step (3) heats；
(5) blank after being surface-treated step (3) by the fixed part at blank both ends be fixed on lower mold at
On type face, the pressurized plane of upper mold is then closed into the upper surface of blank and is pressurizeed to blank, completed after pressurization primary
Forming process；
(6) upper mold is lifted, adjusts blank in the direction of the width, next one-pass molding process is carried out to blank, until certainly
By under state, the distance of blank two sides is not more than 20mm；
(7) blank that step (6) is obtained welded after being surface-treated, school shape and excision remainder punching, obtain titanium alloy cylinder
Body class part；
In the step (1), multiple locating notches are provided on top fixed part and bottom end fixed part, and be located at top
Fixed part on locating notch be located at the locating notch of fixed part of bottom end it is corresponding, and it is corresponding two positioning
Notch is a pair of of locating notch；
In the step (2), the both ends of lower mold have positioning pin, and blank is fixed on lower die by positioning pin and locating notch
On tool；
In the step (3), method that blank is surface-treated are as follows: progress surface fluorescence detection first confirms intact
Ti-1 solution, the method being surface-treated to the forming surface of lower mold are sprayed on surface after falling into are as follows: physics cleaning is then first
Spraying graphite solvent；
In the step (4), the temperature heated to lower mold is 650 DEG C~750 DEG C, soaking time 30-60min；
In the step (5), under pressure to blank, single pressure is 15-40 tons, dwell time 15-20min, under
The temperature of mold is 650 DEG C~750 DEG C；
In the step (5) and step (6), when blank is fixed in the forming surface of lower mold and is adjusted to blank
Sequence, that is, blank carry out the order of circle circle are as follows: circle round billet material most marginal a pair of of locating notch and circle round billet material on one side first
Most marginal a pair of of the locating notch in another side, then encloses a pair of of locating notch in round billet material bosom, finally from the one of bosom
Circle circle is gradually gradually carried out to the locating notch on both sides to locating notch.
2. a kind of titanium alloy barrel body class part gas ket circle manufacturing process according to claim 1, it is characterised in that: described
Titanium alloy barrel body class part is titanium alloy cylinder or titanium alloy cone cylinder, and the height of titanium alloy barrel body class part is not more than
1.5m, diameter are not less than 200mm.
3. a kind of titanium alloy barrel body class part gas ket circle manufacturing process according to claim 1, it is characterised in that: when titanium closes
When the draw ratio of golden cylinder class part is more than or equal to 3, the quantity of locating notch is 10-15 pairs.
4. a kind of titanium alloy barrel body class part gas ket circle manufacturing process according to claim 1, it is characterised in that: when titanium closes
When the draw ratio of golden cylinder class part is less than 3, the quantity of locating notch is 6-9 pairs.
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| JPS5343071A (en) * | 1976-10-01 | 1978-04-18 | Nisshin Steel Co Ltd | Forming apparatus |
| US4148426A (en) * | 1976-09-10 | 1979-04-10 | Nippon Steel Corporation | Method and apparatus for manufacturing metal pipe |
| KR20130117925A (en) * | 2012-04-19 | 2013-10-29 | (주)다우테크놀로지 | Cylinder type sleeve fasten device and method |
| CN103480704A (en) * | 2013-09-10 | 2014-01-01 | 西北工业大学 | Incremental bending and forming method of hat-shaped member |
| CN103801596A (en) * | 2013-10-22 | 2014-05-21 | 北京航星机器制造有限公司 | Overall hot circle rolling method and mold for large-size titanium alloy cylinder parts |
| CN103990664A (en) * | 2014-06-11 | 2014-08-20 | 沈阳飞机工业（集团）有限公司 | Method for forming titanium alloy sheet metal part |
| CN104741460A (en) * | 2015-04-02 | 2015-07-01 | 中航飞机股份有限公司西安飞机分公司 | Bending mould of forming straight circular tube and incremental forming method |
| CN104874661A (en) * | 2015-06-17 | 2015-09-02 | 沈阳飞机工业（集团）有限公司 | Thermal deep-drawing forming machining method for titanium alloy parts |
| CN104056883B (en) * | 2014-06-23 | 2016-02-10 | 西北工业大学 | The gradual bender of a kind of plate multi-pass |
-
2017
- 2017-08-04 CN CN201710661249.0A patent/CN107457279B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4148426A (en) * | 1976-09-10 | 1979-04-10 | Nippon Steel Corporation | Method and apparatus for manufacturing metal pipe |
| JPS5343071A (en) * | 1976-10-01 | 1978-04-18 | Nisshin Steel Co Ltd | Forming apparatus |
| KR20130117925A (en) * | 2012-04-19 | 2013-10-29 | (주)다우테크놀로지 | Cylinder type sleeve fasten device and method |
| CN103480704A (en) * | 2013-09-10 | 2014-01-01 | 西北工业大学 | Incremental bending and forming method of hat-shaped member |
| CN103801596A (en) * | 2013-10-22 | 2014-05-21 | 北京航星机器制造有限公司 | Overall hot circle rolling method and mold for large-size titanium alloy cylinder parts |
| CN103990664A (en) * | 2014-06-11 | 2014-08-20 | 沈阳飞机工业（集团）有限公司 | Method for forming titanium alloy sheet metal part |
| CN104056883B (en) * | 2014-06-23 | 2016-02-10 | 西北工业大学 | The gradual bender of a kind of plate multi-pass |
| CN104741460A (en) * | 2015-04-02 | 2015-07-01 | 中航飞机股份有限公司西安飞机分公司 | Bending mould of forming straight circular tube and incremental forming method |
| CN104874661A (en) * | 2015-06-17 | 2015-09-02 | 沈阳飞机工业（集团）有限公司 | Thermal deep-drawing forming machining method for titanium alloy parts |
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