CN112157157B - Forming method and correcting device for titanium alloy thin-wall component - Google Patents
Forming method and correcting device for titanium alloy thin-wall component Download PDFInfo
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- CN112157157B CN112157157B CN202010951704.2A CN202010951704A CN112157157B CN 112157157 B CN112157157 B CN 112157157B CN 202010951704 A CN202010951704 A CN 202010951704A CN 112157157 B CN112157157 B CN 112157157B
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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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/01—Selection of materials
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
Abstract
The invention relates to a forming method and a correcting device of a titanium alloy thin-wall component, wherein the method comprises the following steps: coating a lubricating coating on the titanium alloy plate and coating a ceramic coating on the molded surface of the forming die; heating the titanium alloy plate; transferring the heated titanium alloy plate to a press machine for a set time and placing the titanium alloy plate in a forming die; carrying out stamping forming on the titanium alloy plate; and (3) performing stamping forming, and simultaneously performing shape correction on the titanium alloy plate in a forming die to obtain the titanium alloy component. The shape correcting device comprises an upper die, a lower die, a first electrode, a second electrode, a ceramic coating, an insulating material and a heating power supply. The forming method of the titanium alloy thin-wall component aims to solve the problems that a tool and a technological process for hot forming of the titanium alloy component are complex, and the rebound deformation of the component is large.
Description
Technical Field
The invention relates to the technical field of titanium alloy thin-wall component forming, in particular to a forming method and a shape correcting device of a titanium alloy thin-wall component.
Background
The titanium alloy has the characteristics of high specific strength, high specific rigidity and the like, so that the titanium alloy thin-wall light structure is widely applied to the field of aerospace, and the effects of reducing the structural weight of an aircraft, improving the performance of the whole aircraft and enhancing the market competitiveness are obvious. However, titanium alloy materials are difficult to form at room temperature, forming precision and quality are difficult to guarantee, and generally, the titanium alloy materials are processed and manufactured by adopting a hot forming mode, including an isothermal hot forming technology and a cold die hot forming technology developed in recent years.
At present, the hot forming mode of the titanium alloy thin-wall component mainly comprises isothermal hot forming and cold die hot forming technologies, and has the advantages of increasing the plasticity of the component material, improving the forming manufacturability and the like, but still has some technical problems. In the isothermal hot forming process of the titanium alloy, a forming die is heated and insulated together with an equipment heating platform, so that the hot forming production efficiency is low, and the effective utilization rate of the equipment is low; the isothermal forming die is repeatedly used at high temperature, has high requirements on die materials, is easy to cause die damage in use, and has high total cost. Patent CN106513508A provides a titanium alloy sheet metal part cold die hot stamping forming tool and a processing method, a set of special tool integrated by an insulating die and a temperature control system is needed, the sheet metal is heated and insulated by adjusting current of the temperature control system, the sheet metal is insulated for 10-45 min at 600-800 ℃, the tool structure is complex, the tool works in a long-time high-temperature environment, the problems of tool damage, titanium alloy surface oxidation and crystal grain growth are not considered, the occupied equipment time is long, and the forming efficiency is low. Patent CN110252899A discloses a method for forming a titanium alloy thin-wall component by a rapid heating cold die hot plate, because of the huge temperature difference between a hot plate and a cold die and the superposition effect of material deformation, the component is rebounded and warped when being taken out of the die after being formed or being subjected to mechanical processing such as next trimming and the like; and in order to improve the forming precision, the die is heated to 150-300 ℃ in advance, heat insulation measures need to be taken for the cold die forming die, the complexity of tooling and process is increased, the energy consumption is increased, and the effect of reducing the forming resilience of the component is limited.
Therefore, the inventor provides a forming method and a shape correcting device for a titanium alloy thin-wall component.
Disclosure of Invention
(1) Technical problem to be solved
The embodiment of the invention provides a forming method and a shape correcting device of a titanium alloy thin-wall component, wherein a titanium alloy plate with a coating is quickly heated, and the temperature of the titanium alloy plate is controlled by the temperature rise time; the heated titanium alloy plate is quickly transferred to a die forming area by a robot, so that the transfer time is completely consistent; the pressing head of the press descends at a high speed, and the forming speed is improved; in the pressure maintaining process after stamping forming, rapid heat compensation is realized on a formed component in a titanium alloy plate self-resistance heating mode, the component is subjected to high-temperature short-time stress relaxation in a die, residual stress in the component is eliminated, the forming precision of the component is obviously improved, and the technical problems of complex tool and process of titanium alloy component hot forming and large resilience deformation of the component are solved.
(2) Technical scheme
A first aspect of an embodiment of the present invention provides a method of forming a titanium alloy thin-walled member, including the steps of:
coating a lubricating coating on the titanium alloy plate and coating a ceramic coating on the molded surface of the forming die;
heating the titanium alloy sheet;
transferring the heated titanium alloy plate into the forming die on a press machine for a set time;
carrying out stamping forming on the titanium alloy plate;
and performing stamping forming, and simultaneously performing shape correction on the titanium alloy plate in the forming die to obtain the titanium alloy component.
Further, the thickness of the titanium alloy sheet material is less than or equal to 4mm.
Further, the rapid descending speed of the pressure head is 300-750 mm/s
Further, the components of the oxidation-resistant lubricating coating comprise graphite and silicon oxide.
Further, the wear-resistant lubricating heat-insulating ceramic coating comprises NiCr-Cr 3 C 2 。
Further, the thickness of the wear-resistant lubricating heat-insulating ceramic coating is 200-500 mu m.
Further, heating the titanium alloy plate specifically comprises:
and placing the titanium alloy plate in a preheated resistance furnace for heating, wherein the preheating temperature of the resistance furnace is a first set temperature, the first set temperature is 50-100 ℃ higher than the heating target temperature of the titanium alloy plate, and the total heating time is shorter than the first set time.
Further, the first set temperature is 700-950 ℃, and the first set time is 150s.
Further, the titanium alloy sheet material is subjected to stamping forming, specifically:
starting the press machine to close the forming die, and carrying out stamping forming on the titanium alloy plate; wherein the descending speed of the pressure head of the press is 300-750 mm/s.
Further, when performing the press forming, the titanium alloy sheet material is corrected in the forming die to obtain the titanium alloy member, which specifically includes the following steps:
at the closing moment of the press machine, an electrode embedded in a lower die of the forming die is in contact with the titanium alloy plate, and the titanium alloy plate is heated for 10-30 s by a heating power supply;
continuing maintaining the pressure for 30-60 s after the heating power supply is cut off;
and opening the forming die, and taking out the formed titanium alloy component.
Wherein the heating current density of the heating power supply is 10-50A/m 2 And the whole pressure maintaining and shape correcting time is less than or equal to 90s.
A second aspect of an embodiment of the present invention provides a shape correction apparatus including an upper die, a lower die, a first electrode, a second electrode, a ceramic coating, an insulating material, and a heating power supply;
the upper die and the lower die are buckled to form a forming die, the first electrode and the second electrode are arranged at the molded surface of the lower die and are respectively electrically connected with the heating power supply, the ceramic coating is coated at the molded surface of the upper die and the molded surface of the lower die, and the insulating material is wrapped outside the first electrode and the second electrode.
(3) Advantageous effects
In conclusion, the titanium alloy plate with the coating is quickly heated, and the temperature of the titanium alloy plate is controlled by the temperature rise time; the heated titanium alloy plate is quickly transferred to a die forming area by a robot, so that the transfer time is completely consistent; the press head of the press descends at a high speed, and the forming efficiency of the titanium alloy thin-wall component is obviously improved; in the pressure maintaining process after stamping forming, the titanium alloy plate self-resistance heating mode is used for quickly supplementing heat to a formed component, the component is subjected to high-temperature short-time stress relaxation in a die, the residual stress in the component is eliminated, and the forming precision of the titanium alloy thin-wall component is obviously improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for forming a titanium alloy thin-walled component according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a shape correction device according to an embodiment of the present invention before shape correction;
fig. 3 is a schematic structural diagram of a shape calibration device according to an embodiment of the present invention.
In the figure:
1, mounting a mold; 2-lower mould; 301-a first electrode; 302-a second electrode; 4-ceramic coating; 5-an insulating material; 6-heating power supply; 7-titanium alloy sheet material; 8-titanium alloy component.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described, but covers any modifications, alterations, and improvements in the parts, components, and connections without departing from the spirit of the invention.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a schematic flow chart of a forming method of a titanium alloy thin-walled component according to an embodiment of the present invention, and as shown in fig. 1, according to a first aspect of an embodiment of the present invention, a forming method of a titanium alloy thin-walled component is provided, which includes the following steps:
s1, coating a lubricating coating on the titanium alloy plate and coating a ceramic coating on the molded surface of the forming die.
In the step, a uniform antioxidant lubricating coating is formed on a titanium alloy plate by adopting a coating mode, the main components of the coating are graphite, silicon oxide and the like, a wear-resistant lubricating heat-insulating ceramic coating is prepared on the molded surface of a cold-die forming die by adopting a plasma spraying mode, and the main component of the coating is NiCr-Cr 3 C 2 The thickness is 200-500 mu m, the forming method provided by the embodiment of the invention is suitable for different types of titanium alloys such as alpha, near alpha, alpha + beta and the like, and the plate thickness is not more than 4mm.
S2, heating the titanium alloy plate.
In the step, the titanium alloy plate is placed in a preheated resistance furnace for heating, the preheating temperature of the heating furnace is 700-950 ℃, the preheating temperature is 50-100 ℃ higher than the heating target temperature of the titanium alloy plate, and the total heating time is less than 150s.
And S3, transferring the heated titanium alloy plate into a forming die on a press machine in set time.
In the step, a robot is used for grabbing the heated titanium alloy plate, the titanium alloy plate is transferred to a press according to a set route and placed on a lower die of a forming die, and the transfer time is less than 10s.
And S4, carrying out stamping forming on the titanium alloy plate.
In the step, a press machine is started to close the upper die and the lower die, the titanium alloy plate is subjected to stamping forming, the pressure of the press machine is less than 400KN, and the rapid descending speed of a pressure head of the press machine is 300-750 mm/s.
And S5, performing stamping forming, and simultaneously performing shape correction on the titanium alloy plate in a forming die to obtain the titanium alloy component.
In the step, at the closing moment of the press, the electrode embedded in the lower die is in close contact with the titanium alloy plate, the heating power supply performs heat compensation on the titanium alloy plate after the current is automatically switched on, and the heating current density is 10-50A/m 2 And after heating for 10-30 s, cutting off the heating power supply and keeping the pressure for 30-60 s, wherein the whole pressure keeping and shape correcting time is not more than 90s.
As a preferred embodiment, the thickness of the titanium alloy sheet material is less than or equal to 4mm.
As a preferred embodiment, the components of the oxidation resistant lubricating coating include graphite and silica.
As a preferred embodiment, the wear-resistant lubricating heat-insulating ceramic coating comprises NiCr-Cr 3 C 2 。
As a preferred embodiment, the thickness of the wear-resistant lubricating heat-insulating ceramic coating is 200-500 μm.
As a preferred embodiment, the titanium alloy sheet material is heated, specifically:
the titanium alloy plate is placed in a preheated resistance furnace to be heated, the preheating temperature of the resistance furnace is a first set temperature, the first set temperature is 50-100 ℃ higher than the heating target temperature of the titanium alloy plate, and the total heating time is shorter than the first set time.
In a preferred embodiment, the first set temperature is 700 to 950 ℃ and the first set time is 150 seconds.
As a preferred embodiment, the titanium alloy plate is subjected to press forming, specifically:
starting a press machine to close the forming die, and carrying out stamping forming on the titanium alloy plate; wherein the descending speed of the pressure head of the press is 300-750 mm/s.
As a preferred embodiment, the method for obtaining the titanium alloy member by performing the stamping and the shaping on the titanium alloy sheet material in the forming die at the same time comprises the following steps:
at the closing moment of the press, an electrode embedded in a lower die of the forming die is contacted with the titanium alloy plate, and the titanium alloy plate is heated for 10-30 s by a heating power supply;
keeping the pressure for 30-60 s after the heating power supply is cut off;
and opening the forming die and taking out the formed titanium alloy component.
Wherein the heating current density of the heating power supply is 10-50A/m 2 And the whole pressure maintaining and shape correcting time is less than or equal to 90s.
The invention is illustrated by the following specific examples:
example 1
1. The uniform oxidation resistance is formed on the TC4 titanium alloy plate with the thickness of 2mm by adopting a coating modeThe main components of the lubricating coating are graphite, silicon oxide and the like, the plasma spraying mode is adopted to prepare the wear-resistant lubricating heat-insulating ceramic coating on the molded surface of the cold die forming die, and the main component of the lubricating coating is NiCr-Cr 3 C 2 300 μm in thickness;
2. placing a TC4 titanium alloy plate in a preheated resistance furnace for heating, wherein the preheating temperature of the heating furnace is 920 ℃, the preheating temperature is 50 ℃ higher than the heating target temperature of the plate, and the total heating and heat preservation time is 65s;
3. grabbing the heated TC4 titanium alloy plate by using a robot, transferring the plate to a press according to a set route, and placing the plate on a lower die of a forming die, wherein the transfer time is 9s;
4. starting a press machine to close the upper die and the lower die, and performing stamping forming on the plate, wherein the rapid descending speed of the pressure head is 500mm/s;
5. at the closing moment of the press, the electrode embedded in the lower die is in close contact with the TC4 titanium alloy plate, a current heating power supply is automatically switched on, and heat is supplemented to the plate, wherein the heating current density is 20A/m 2 After heating for 15s, cutting off the heating power supply and keeping the pressure for 30s;
6. and opening the upper die and the lower die, and taking out the formed TC4 titanium alloy component.
Example 2
1. A uniform anti-oxidation lubricating coating is formed on a Ti65 titanium alloy plate with the thickness of 1mm by adopting a coating mode, the main components of the coating are graphite, silicon oxide and the like, a wear-resistant lubricating heat-insulating ceramic coating is prepared on the molded surface of a cold die forming die by adopting a plasma spraying mode, and the main component of the coating is NiCr-Cr 3 C 2 500 μm thick;
2. placing the Ti65 titanium alloy plate in a preheated resistance furnace for heating, wherein the preheating temperature of the heating furnace is 950 ℃, the preheating temperature is 50 ℃ higher than the heating target temperature of the plate, and the total heating and heat preservation time is 60s;
3. grabbing the heated Ti65 titanium alloy plate by using a robot, transferring the heated Ti65 titanium alloy plate to a press according to a set route, and placing the heated Ti65 titanium alloy plate on a lower die of a forming die for 9s;
4. starting a press machine to close the upper die and the lower die, and performing stamping forming on the plate, wherein the rapid descending speed of the pressure head is 700mm/s;
5. at the closing moment of the press, the electrode embedded in the lower die is in close contact with the Ti65 titanium alloy plate, the plate is supplemented with heat by automatically switching on a current heating power source, and the heating current density is 25A/m 2 After heating for 15s, cutting off the heating power supply and keeping the pressure for 40s;
6. and opening the upper die and the lower die, and taking out the formed Ti65 titanium alloy component.
Example 3
1. A uniform anti-oxidation lubricating coating is formed on a TA2 titanium alloy plate with the thickness of 3mm by adopting a coating mode, the main components of the coating are graphite, silicon oxide and the like, a wear-resistant lubricating heat-insulating ceramic coating is prepared on the molded surface of a cold die forming die by adopting a plasma spraying mode, and the main component of the coating is NiCr-Cr 3 C 2 200 μm thick;
2. placing the TA2 titanium alloy plate in a preheated resistance furnace for heating, wherein the preheating temperature of the heating furnace is 750 ℃, the preheating temperature is 50 ℃ higher than the heating target temperature of the plate, and the total heating and heat preservation time is 55s;
3. grabbing the heated TA2 titanium alloy plate by using a robot, transferring the plate to a press according to a set route, and placing the plate on a lower die of a forming die for 9s;
4. starting a press machine to close the upper die and the lower die, and performing stamping forming on the plate, wherein the rapid descending speed of the pressure head is 400mm/s;
5. at the closing moment of the press, the electrode embedded in the lower die is in close contact with the TA2 titanium alloy plate, the plate is heated by automatically switching on a current heating power supply, and the heating current density is 12A/m 2 After heating for 15s, cutting off the heating power supply and keeping the pressure for 20s;
6. and opening the upper die and the lower die, and taking out the formed TA2 titanium alloy component.
Fig. 2 is a schematic structural view of a shape correcting apparatus according to an embodiment of the present invention before heating, fig. 3 is a schematic structural view of a shape correcting apparatus according to an embodiment of the present invention during heating, and as shown in fig. 2 to 3, a shape correcting apparatus according to a second aspect of an embodiment of the present invention includes an upper mold 1, a lower mold 2, a first electrode 301, a second electrode 302, a ceramic coating 4, an insulating material 5, and a heating power source 6; the upper die 1 and the lower die 2 are buckled to form a forming die, the first electrode 301 and the second electrode 302 are arranged on the molded surface of the lower die 2 and are respectively electrically connected with the positive electrode and the negative electrode of the heating power supply 6, the molded surfaces of the upper die 1 and the lower die 2 are coated with the ceramic coating 4, and the insulating material 5 is wrapped outside the first electrode 301 and the second electrode 302.
In this embodiment, after the upper die 1 is opened, the titanium alloy sheet 7 is placed in the lower die 2, and then the upper die 1 and the lower die 2 are fastened together and subjected to electrical heating and shape correction through the first electrode 301 and the second electrode 302 to finally form the titanium alloy member 8; the ceramic coating 4 is sprayed to reduce heat loss in the forming process of the titanium alloy plate 7, and the insulating material 5 is used for preventing the first electrode 301 and the second electrode 302 from electric leakage.
Compared with the prior art, the invention has the following technical effects:
1. can realize the high-efficiency forming of the titanium alloy thin-wall component
The heating rate of the plate is increased by designing a titanium alloy plate coating and adjusting a heating mode, the plate is quickly transferred and heated by using a robot, and the high-speed descending of a pressing head of a press is adjusted, so that the forming time of the titanium alloy thin-wall component is shortened; and the hot-supplementing shape correction is carried out in the pressure maintaining process after the component is formed by stamping, the processing time of the component is not increased, and the forming efficiency of the titanium alloy thin-wall component is obviously improved.
2. Improving the forming precision of the titanium alloy thin-wall component
The titanium alloy material is loaded with current to rapidly heat by utilizing the high resistance heating performance of the titanium alloy material, so that the high-temperature short-time stress relaxation under the condition of keeping pressure in a die can be realized, the rebound deformation of a component is reduced, and the forming precision of the titanium alloy thin-wall component is improved. The molded surface of the die adopts a mode of spraying a ceramic coating, so that heat loss in the forming process of the titanium alloy plate is reduced.
It should be clear that the embodiments in this specification are described in a progressive manner, and the same or similar parts in the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The present invention is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known process techniques is omitted herein for the sake of brevity.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and alterations to this application will become apparent to those skilled in the art without departing from the scope of this invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (7)
1. A forming method of a titanium alloy thin-wall component is characterized by comprising the following steps:
coating a lubricating coating on the titanium alloy plate and coating a ceramic coating on the molded surface of the forming die;
heating the titanium alloy sheet;
transferring the heated titanium alloy plate into the forming die on a press machine for a set time; carrying out stamping forming on the titanium alloy plate;
while performing stamping forming, correcting the titanium alloy plate in the forming die to obtain a titanium alloy component;
the titanium alloy plate is subjected to stamping forming, and the method specifically comprises the following steps:
starting the press machine to close the forming die, and performing stamping forming on the titanium alloy plate; wherein the descending speed of the pressure head of the press is 300-750 mm/s;
the method comprises the following steps of calibrating the titanium alloy plate in the forming die to obtain the titanium alloy component, and specifically comprises the following steps:
at the closing moment of the press, an electrode embedded in a lower die of the forming die is in contact with the titanium alloy plate, and the titanium alloy plate is heated for 10-30 s by a heating power supply;
continuing maintaining the pressure for 30-60 s after the heating power supply is cut off; opening the forming die and taking out the formed titanium alloy component;
wherein the heating current density of the heating power supply is 10-50A/m 2 And the whole pressure maintaining and shape correcting time is less than or equal to 90s.
2. The method of forming a titanium alloy thin-walled component of claim 1, wherein the thickness of the titanium alloy sheet material is less than or equal to 4mm.
3. The method of forming a titanium alloy thin-walled component of claim 1, wherein the lubricating coating is an oxidation resistant lubricating coating comprising graphite and silica.
4. The method of claim 1, wherein the ceramic coating is a wear-resistant, lubricious, and thermally insulative ceramic coating comprising NiCr-Cr 3 C 2 。
5. The method of forming a titanium alloy thin-walled component of claim 4, wherein the wear-resistant, lubricating, and heat-insulating ceramic coating has a thickness of 200-500 μm.
6. The method for forming a titanium alloy thin-walled component according to claim 1, wherein the heating of the titanium alloy sheet material is specifically:
and (2) placing the titanium alloy plate in a preheated resistance furnace for heating, wherein the preheating temperature of the resistance furnace is a first set temperature, the first set temperature is 50-100 ℃ higher than the heating target temperature of the titanium alloy plate, the total heating time is shorter than a first set time, and the first set time is 150s.
7. The method of forming a titanium alloy thin-walled member according to claim 6, wherein the first set temperature is 700 to 950 ℃.
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| CN113432576B (en) * | 2021-06-17 | 2023-03-03 | 哈尔滨工业大学 | Titanium alloy thin-wall component differential temperature forming resilience testing device and method |
| CN115430755A (en) * | 2022-11-07 | 2022-12-06 | 中国航发沈阳黎明航空发动机有限责任公司 | Built-in electrode hot forming device and method based on optimized blank shape |
| CN117798271A (en) * | 2024-02-28 | 2024-04-02 | 吉林大学 | Multi-pass cold die hot stamping forming device and method for titanium alloy plate |
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| US3974673A (en) * | 1975-04-07 | 1976-08-17 | Rockwell International Corporation | Titanium parts manufacturing |
| US20070261461A1 (en) * | 2006-05-11 | 2007-11-15 | Rti International Metals, Inc. | Method and apparatus for hot forming elongated metallic bars |
| US8652276B2 (en) * | 2009-12-22 | 2014-02-18 | Sprint AeroSystems, Inc. | System and method for forming contoured new and near-net shape titanium parts |
| CN104588521B (en) * | 2014-12-19 | 2017-04-19 | 北京卫星制造厂 | Current auxiliary heat forming device and method with flexible clamping adopted |
| CN106513508A (en) * | 2016-09-23 | 2017-03-22 | 北京航空航天大学 | Titanium alloy sheet metal part cold-die hot-stamping forming tool and machining method |
| CN109201838B (en) * | 2017-11-24 | 2021-04-09 | 中国航空制造技术研究院 | Method for improving performance of superplastic forming component material |
| CN110252899B (en) * | 2019-07-25 | 2021-07-02 | 哈尔滨工业大学 | Rapid heating cold die hot plate forming method for titanium alloy thin-wall component |
| CN110666040A (en) * | 2019-09-17 | 2020-01-10 | 中国航空制造技术研究院 | Hot stretch bending die and stretch bending forming method of titanium alloy profile |
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