CN108372215A - A kind of manufacturing process of titanium alloy cone cylinder part precision Thermal expansion - Google Patents
A kind of manufacturing process of titanium alloy cone cylinder part precision Thermal expansion Download PDFInfo
- Publication number
- CN108372215A CN108372215A CN201611183009.6A CN201611183009A CN108372215A CN 108372215 A CN108372215 A CN 108372215A CN 201611183009 A CN201611183009 A CN 201611183009A CN 108372215 A CN108372215 A CN 108372215A
- Authority
- CN
- China
- Prior art keywords
- blank
- titanium alloy
- cylinder part
- cone cylinder
- annular blank
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/06—Removing local distortions
- B21D1/08—Removing local distortions of hollow bodies made from sheet metal
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
Abstract
The present invention provides a kind of manufacturing process of titanium alloy cone cylinder part precision Thermal expansion, technical points are：The manufacturing process of titanium alloy cone cylinder part precision Thermal expansion includes five steps, mold in the manufacturing process includes expansion core, limited block is connected in expansion core, expansion core is externally connected to swollen valve, the bottom of mold is provided with bottom plate, bottom plate is equipped with pin rod hole, and pin rod has pin rod to pass through in hole, and one end of pin rod connects swollen valve；The present invention being capable of simplification of flowsheet, reduce a thermal cycle and surface treatment, reduce material peroxidating failure and hydrogenation risk, it improves product reliability and production efficiency, reduce device resource and hot-die cost input, part weld seam quantity is directly determined by the plate width size of annular blank, it is not limited by forming technology, the item number of weld seam can be reduced to the full extent, significantly improve part mechanical property, the busbar of tapering annular blank is straightway, welding is straight seam welding, reduces welding procedure risk and auxiliary tailor-welding tool cost input.
Description
Technical field
The present invention relates to metal plate hot forming techniques field, more particularly to a kind of titanium alloy cone cylinder part precision Thermal expansion at
Shape method.
Background technology
The titanium alloy cone cylinder part of such as outer diameter 600-1000mm, wall thickness 1.0-3.0mm are chiefly used in aeroengine combustor buring room
Outer wall is usually designed to the tapering annular component that shape of generatrix is the combination of the multi-line sections such as straight line, curve, due to assembly demand manufacture
Required precision is higher.Currently, the prior art there is no whole manufacturing process for such large-scale titanium alloy cone cylinder part, it is more ripe
Manufacturing process is that cone cylinder part is divided into several valves, after first dividing valve hot forming welding be integral annular base, eventually by solid
Fixed pattern divides the thermal expansion effects of valve bulging die tire by the size of part hot sizing to actual demand.
For large-size titanium alloy cone cylinder part, to ensure to divide valve hot forming quality, generally require to be divided into 3 valves with
On, divide valve number more, weld seam quantity is then more, and part mechanical property is poorer.Divide the blank after valve forming, when welding is docked
0.1 δ is not to be exceeded in welding edge dislocation, and δ is original mother metal thickness, otherwise directly affects weldquality, thus welding is for dividing valve
Blank profile coincidence rate after hot pressing is more demanding, therefore the prior art not can solve large-size titanium alloy cone cylinder part system
Make the problems such as process risk is big, manufacturing cost is high, part poor mechanical property.
Invention content
The purpose of the present invention is exactly to solve the problems, such as the above technology, and provide a kind of titanium alloy cone cylinder part essence thus
The manufacturing process of close Thermal expansion.
A kind of manufacturing process of titanium alloy cone cylinder part precision Thermal expansion,
The first step designs the size of annular blank according to material forming limiting principle, is determined according to titanium alloy original plate amplitude
Annular blank divides valve number, and the limit hole being arranged on annular blank is made in blanking procedure, divides valve blank through roll bending technique and spelling
Annular blank is made in Welding；
The inner surface and the outer surface of second step, annular blank distinguishes uniform brushing antioxidizing paint, the outer surface of expansion core and swollen valve
The interior outer mold surface of bottom and swollen valve distinguish naturally dry after uniform brushing liquid graphite；
Third walks, and annular blank is inserted in the outer surface of swollen valve, the pin plate hole on the limit hole and bottom plate being arranged on annular blank
Position match and fixed with pin rod pin, expansion core is packed into swollen valve and props up swollen valve；
The mold for installing annular blank is fitted into hot-press equipment by the 4th step, and thermocouple is inserted on bottom plate, closes fire door, if
Set the goal heating temperature, opens the heating system of hot-press equipment；
5th step opens hot-press equipment to mold when the mold temperature that hot-press equipment is shown reaches target heating temperature range
When the height of pressurization, the closure height of observation mold on operation console, persistent pressure to 20t-40t and mold no longer changes, protect
Stop pressurizeing and unloading after warm pressurize 10min-40min, closes the heating system of hot-press equipment, furnace cooling.
Further, target heating temperature is 600 DEG C ~ 800 DEG C.
Further, further include the design of titanium alloy cone cylinder part blank in the above-mentioned first step, titanium alloy cone cylinder part blank
It is designed as the Blank Design of titanium alloy cone cylinder part being tapering annular blank that busbar is straightway, it is former according to the material forming limit
The upper port and lower port outer diameter of reason adjustment annular blank so that maximum distortion rate when annular blank bulging to cone cylinder part
Less than the maximum elongation rate that material allows, calculated tapering annular blank extension at fan-shaped blank, according to titanium by geometric formula
Alloy original plate amplitude determines that fan-shaped blank divides the piece number, that is, divides valve blank.
Further, the design principle that the size of tapering annular blank need to follow is
< k
Wherein, K be material allow maximum elongation rate, dx be any cross-sectional outer diameter size of annular blank, dy be cone cylinder part with
The same cross-sectional outer diameter size of annular blank.
Further, mold includes expansion core, and limited block is connected in expansion core, and expansion core is externally connected to swollen valve, mold
Bottom is provided with bottom plate, and pin rod hole is provided on bottom plate, and pin rod has pin rod to pass through in hole, and one end of pin rod connects swollen valve.
Further, expansion core and swollen valve and bottom plate are rotary structure, and swollen valve is that uniform more valves are coaxial, when outer force effect
Swollen valve horizontal radial sliding while expansion core moves straight down.
Advantages of the present invention：
1, simplification of flowsheet reduces a thermal cycle and surface treatment, reduces material peroxidating failure and hydrogenation risk, improves
Product reliability and production efficiency reduce device resource and hot-die cost input；
2, part weld seam quantity is directly determined by the plate width size of annular blank, is not limited by forming technology, can be utmostly
The upper item number for reducing weld seam, significantly improves part mechanical property；
3, the busbar of tapering annular blank is straightway, and welding is straight seam welding, reduces welding procedure risk and auxiliary welding
Frock cost is put into；
4, valve Thermal expansion mold is divided to realize part by one-step Thermal expansion in place using slidingtype, part forming precision is higher.
Description of the drawings
Fig. 1 is the structure schematic diagram of mold；
Fig. 2 is schematic diagram of the annular blank bulging to cone cylinder part.
Label in attached drawing be：
1, expansion core
2, limited block
3, swollen valve
4, pin rod
5, bottom plate.
Specific implementation mode
In order to make the present invention be easier to be understood, below in conjunction with attached drawing and embodiment to technical scheme of the present invention
It is described in detail.
Embodiment 1
As shown in Figs. 1-2, a kind of manufacturing process of titanium alloy cone cylinder part precision Thermal expansion, the first step, according to the material forming limit
Principle designs the size of annular blank, determines that annular blank divides valve number according to titanium alloy original plate amplitude, on annular blank
The limit hole of setting is made in blanking procedure, divides valve blank that annular blank, roll bending technique is made through roll bending technique and butt welding process
The prior art is used with butt welding process；Second step, the inner surface and the outer surface of annular blank are uniformly brushed anti-oxidation respectively
It dries in the air naturally after the bottom of coating, the outer surface of expansion core 1 and swollen valve 3 and the interior outer mold surface of swollen valve 3 respectively uniform brushing liquid graphite
It is dry；Third walks, and annular blank is inserted in the outer surface of swollen valve 3, the limit hole being arranged on annular blank and the pin plate hole on bottom plate 5
Position match and use the pin of pin rod 4 fixed, expansion core 1 is packed into swollen valve 3 and props up swollen valve 3；4th step will install annular blank
Mold is fitted into hot-press equipment, and thermocouple is inserted on bottom plate 5, closes fire door, sets target heating temperature, opens hot-press equipment
Heating system；5th step, when the mold temperature that hot-press equipment is shown reaches target heating temperature range, target heating temperature
It is 600 DEG C ~ 800 DEG C, opens hot-press equipment to mould pressurizing, the closure height of mold is observed on operation console, persistent pressure is extremely
Stop pressurizeing and unloading when the height of 20t-40t and mold no longer changes, after heat-insulation pressure keeping 10min-40min, closes hot pressing
The heating system of equipment, furnace cooling.
Further, mold includes expansion core 1, and limited block 2 is connected in expansion core 1, and expansion core 1 is externally connected to swollen valve 3, mould
The bottom of tool is provided with bottom plate 5, and pin rod hole is provided on bottom plate 5, has pin rod 4 to pass through in pin rod hole, and one end connection of pin rod 4 is swollen
Valve 3.
Embodiment 2
As shown in Figs. 1-2, a kind of manufacturing process of titanium alloy cone cylinder part precision Thermal expansion, the first step, according to the material forming limit
Principle designs the size of annular blank, determines that annular blank divides valve number according to titanium alloy original plate amplitude, on annular blank
The limit hole of setting is made in blanking procedure, divides valve blank that annular blank, roll bending technique is made through roll bending technique and butt welding process
The prior art is used with butt welding process, further includes the design of titanium alloy cone cylinder part blank, titanium alloy cone cylinder part blank is set
It is calculated as the Blank Design of titanium alloy cone cylinder part being tapering annular blank that busbar is straightway, according to material forming limiting principle
Adjust the upper port and lower port outer diameter of annular blank so that maximum distortion rate when annular blank bulging to cone cylinder part is small
In the maximum elongation rate that material allows, is calculated tapering annular blank extension into fan-shaped blank by geometric formula, closed according to titanium
Golden original plate amplitude determines that fan-shaped blank divides the piece number, that is, divides valve blank.What the size of the tapering annular blank need to follow
Design principle is
< k
Wherein, K be material allow maximum elongation rate, dx be any cross-sectional outer diameter size of annular blank, dy be cone cylinder part with
The same cross-sectional outer diameter size of annular blank；The inner surface and the outer surface of second step, annular blank uniformly brushes anti-oxidation painting respectively
The bottom of material, the outer surface of expansion core 1 and swollen valve 3 and naturally dry after the uniform brushing liquid graphite of interior outer mold surface difference of swollen valve 3；
Third walks, and annular blank is inserted in the outer surface of swollen valve 3, the limit hole being arranged on annular blank and the pin plate hole on bottom plate 5
Position matches and uses the pin of pin rod 4 fixed, and expansion core 1 is packed into swollen valve 3 and props up swollen valve 3；4th step will install the mould of annular blank
Tool is fitted into hot-press equipment, and thermocouple is inserted on bottom plate 5, closes fire door, is set target heating temperature, is opened hot-press equipment
Heating system；5th step, when the mold temperature that hot-press equipment is shown reaches target heating temperature range, target heating temperature is
600 DEG C ~ 800 DEG C, hot-press equipment is opened to mould pressurizing, the closure height of mold is observed on operation console, persistent pressure is extremely
Stop pressurizeing and unloading when the height of 20t-40t and mold no longer changes, after heat-insulation pressure keeping 10min-40min, closes hot pressing
The heating system of equipment, furnace cooling.
Further, mold includes expansion core 1, and limited block 2 is connected in expansion core 1, and expansion core 1 is externally connected to swollen valve 3, mould
The bottom of tool is provided with bottom plate 5, and bottom plate 5 is annular bottom plate, is provided with pin rod hole on bottom plate 5, has pin rod 4 to pass through in pin rod hole,
One end of pin rod 4 connects swollen valve 3, and expansion core 1 and swollen valve 3 and bottom plate 5 are rotary structure, and swollen valve 3 is that uniform more valves are coaxial, outside
Swollen 3 horizontal radial of valve sliding while expansion core 1 moves straight down when force effect
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, and it is any
Those familiar with the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its invents
Design is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of manufacturing process of titanium alloy cone cylinder part precision Thermal expansion, it is characterised in that：
The first step designs the size of annular blank according to material forming limiting principle, is determined according to titanium alloy original plate amplitude
Annular blank divides valve number, and the limit hole being arranged on annular blank is made in blanking procedure, divides valve blank through roll bending technique and spelling
Annular blank is made in Welding；
The inner surface and the outer surface of second step, annular blank distinguishes uniform brushing antioxidizing paint, the outer surface of expansion core and swollen valve
The interior outer mold surface of bottom and swollen valve distinguish naturally dry after uniform brushing liquid graphite；
Third walks, and annular blank is inserted in the outer surface of swollen valve, the pin plate hole on the limit hole and bottom plate being arranged on annular blank
Position match and fixed with pin rod pin, expansion core is packed into swollen valve and props up swollen valve；
The mold for installing annular blank is fitted into hot-press equipment by the 4th step, and thermocouple is inserted on bottom plate, closes fire door, if
Set the goal heating temperature, opens the heating system of hot-press equipment；
5th step opens hot-press equipment to mold when the mold temperature that hot-press equipment is shown reaches target heating temperature range
When the height of pressurization, the closure height of observation mold on operation console, persistent pressure to 20t-40t and mold no longer changes, protect
Stop pressurizeing and unloading after warm pressurize 10min-40min, closes the heating system of hot-press equipment, furnace cooling.
2. a kind of manufacturing process of titanium alloy cone cylinder part precision Thermal expansion as described in claim 1, it is characterised in that：Target adds
Hot temperature is 600 DEG C ~ 800 DEG C.
3. a kind of manufacturing process of titanium alloy cone cylinder part precision Thermal expansion as described in claim 1, it is characterised in that：Above-mentioned
Further include the design of titanium alloy cone cylinder part blank in one step, titanium alloy cone cylinder part blank is designed as the hair of titanium alloy cone cylinder part
Base be designed as busbar be straightway tapering annular blank, according to material forming limiting principle adjust annular blank upper port and
Lower port outer diameter so that maximum distortion rate when annular blank bulging to cone cylinder part is less than the maximum elongation that material allows
Rate is calculated tapering annular blank extension into fan-shaped blank by geometric formula, is determined and fanned according to titanium alloy original plate amplitude
Shape blank divides the piece number, that is, divides valve blank.
4. a kind of manufacturing process of titanium alloy cone cylinder part precision Thermal expansion as claimed in claim 3, it is characterised in that：Taper ring
The design principle that the size of shape blank need to follow is
< k
Wherein, K be material allow maximum elongation rate, dx be any cross-sectional outer diameter size of annular blank, dy be cone cylinder part with
The same cross-sectional outer diameter size of annular blank.
5. a kind of manufacturing process of titanium alloy cone cylinder part precision Thermal expansion as described in claim 1, it is characterised in that：Mold packet
Expansion core is included, limited block is connected in expansion core, expansion core is externally connected to swollen valve, and the bottom of mold is provided with bottom plate, is set on bottom plate
It is equipped with pin rod hole, pin rod has pin rod to pass through in hole, and one end of pin rod connects swollen valve.
6. a kind of manufacturing process of titanium alloy cone cylinder part precision Thermal expansion as claimed in claim 5, it is characterised in that：It is described swollen
Core and swollen valve and bottom plate are rotary structure, and swollen valve is that uniform more valves are coaxial, and expansion core moves straight down when outer force effect
Swollen valve horizontal radial sliding simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611183009.6A CN108372215B (en) | 2016-12-20 | 2016-12-20 | Forming method for precise thermal bulging of titanium alloy conical barrel part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611183009.6A CN108372215B (en) | 2016-12-20 | 2016-12-20 | Forming method for precise thermal bulging of titanium alloy conical barrel part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108372215A true CN108372215A (en) | 2018-08-07 |
| CN108372215B CN108372215B (en) | 2020-07-07 |
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ID=63015385
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611183009.6A Active CN108372215B (en) | 2016-12-20 | 2016-12-20 | Forming method for precise thermal bulging of titanium alloy conical barrel part |
Country Status (1)
| Country | Link |
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| CN (1) | CN108372215B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110743979A (en) * | 2019-11-26 | 2020-02-04 | 中国航发沈阳黎明航空发动机有限责任公司 | Thermal bulging die for arc-shaped concave surface of titanium alloy thin-wall cylindrical part and working method |
| CN111644556A (en) * | 2020-06-12 | 2020-09-11 | 无锡派克新材料科技股份有限公司 | Manufacturing method of Ti64 alloy casing forging inclined-plane ring blank |
| CN113102868A (en) * | 2021-04-20 | 2021-07-13 | 中国直升机设计研究所 | Helicopter main nozzle lobe machining method |
| CN113245451A (en) * | 2021-06-09 | 2021-08-13 | 索罗曼(常州)合金新材料有限公司 | Method for producing titanium alloy large-caliber square thin-walled tube |
| CN113770647A (en) * | 2021-08-12 | 2021-12-10 | 上海航天精密机械研究所 | Vacuum thermoforming method for titanium alloy variable-curve bus spray pipe |
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| CN102873513A (en) * | 2012-09-29 | 2013-01-16 | 北京航星机器制造公司 | Gas bulging forming method of large-sized thin-walled aluminum alloy ball-segment skin |
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| JPS5545566A (en) * | 1978-09-27 | 1980-03-31 | Nippon Kinzoku Kk | Manufacture of wheel ring |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110743979A (en) * | 2019-11-26 | 2020-02-04 | 中国航发沈阳黎明航空发动机有限责任公司 | Thermal bulging die for arc-shaped concave surface of titanium alloy thin-wall cylindrical part and working method |
| CN111644556A (en) * | 2020-06-12 | 2020-09-11 | 无锡派克新材料科技股份有限公司 | Manufacturing method of Ti64 alloy casing forging inclined-plane ring blank |
| CN111644556B (en) * | 2020-06-12 | 2021-12-07 | 无锡派克新材料科技股份有限公司 | Manufacturing method of Ti64 alloy casing forging inclined-plane ring blank |
| CN113102868A (en) * | 2021-04-20 | 2021-07-13 | 中国直升机设计研究所 | Helicopter main nozzle lobe machining method |
| CN113245451A (en) * | 2021-06-09 | 2021-08-13 | 索罗曼(常州)合金新材料有限公司 | Method for producing titanium alloy large-caliber square thin-walled tube |
| CN113245451B (en) * | 2021-06-09 | 2022-02-11 | 索罗曼(常州)合金新材料有限公司 | Method for producing titanium alloy large-caliber square thin-walled tube |
| CN113770647A (en) * | 2021-08-12 | 2021-12-10 | 上海航天精密机械研究所 | Vacuum thermoforming method for titanium alloy variable-curve bus spray pipe |
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| CN108372215B (en) | 2020-07-07 |
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