CN104480416A - Cross-phase region forging process of TC18 titanium alloy on screw press - Google Patents
Cross-phase region forging process of TC18 titanium alloy on screw press Download PDFInfo
- Publication number
- CN104480416A CN104480416A CN201410702805.0A CN201410702805A CN104480416A CN 104480416 A CN104480416 A CN 104480416A CN 201410702805 A CN201410702805 A CN 201410702805A CN 104480416 A CN104480416 A CN 104480416A
- Authority
- CN
- China
- Prior art keywords
- bar
- forging
- phase region
- screw press
- beta
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
Abstract
The invention provides a cross-phase region forging process of a TC18 titanium alloy on a screw press. By adopting the cross-phase region forging process, cross-phase region forging on TC18 titanium allay large-size die forgings by multiple heating numbers on an electric screw press can be realized, and die forgings can obtain uniform mesh basket knitted structures with excellent performance. The cross-phase region forging process comprises the following processing steps: firstly, feeding, and carrying out beta-phase region forging on a bar by virtue of the electric screw press; heating the bar to the temperature (T<beta>-30 to T<beta>-50) DEG C below the phase transformation point, and carrying out heat preservation; heating the bar toT<beta>+20) DEG C along with a furnace, and carrying out heat preservation; transferring the bar to the screw press to forge while controlling the forging deformation to be 35%-60%; carrying out alpha+beta two-phase region forging on the bar by virtue of the screw press, heating the bar to (alpha+beta) two-phase region temperature (T<beta>-30 to T<beta>-50) DEG C, and carrying out heat preservation; transferring the bar to a die cavity of the screw press, carrying out two-phase region die forging while controlling the die forging deformation within 30%, so as to obtain forgings; and finally carrying out thermal treatment on the forgings.
Description
Technical field
The present invention relates to the technical field of hot working of metallic substance, especially relate to the technical field of forging of titanium alloy material, be specially a kind of TC18 titanium alloy on screw press across phase region forging process.
Background technology
Titanium alloy because specific tenacity is high, excellent combination property and be widely used in aerospace field, in four kinds of structural states of wherein titanium alloy, basket tissue and tissue can meet modern aircraft design high damage tolerance theory, particularly uniform weave side by side basket tissue can obtain higher K
iCvalue, the method that TC18 titanium alloy adopts accurate β to forge usually to obtain basket tissue, to obtain over-all properties preferably basket tissue.But there is following two problems in the titanium alloy large-sized stamp work of current TC18 in actual production process:
(1) existingly mostly carry out on open die forgings the experiment of TC18 titanium alloy processing parameter, the experimental result regularity drawn is strong, has little significance to the operation instruction of the titanium alloy large-sized stamp work of actual TC18;
(2) the titanium alloy large-sized structure stamp work of TC18 is difficult to adopt quasi-beta forging process one fire forging strike to be put in place, general needs divide fire to carry out across the many fire of phase region time forging and molding at β phase region and alpha+beta two-phase region, the hydraulic press that adopts carries out accurate β forging and molding to TC18 titanium alloy more at present, but there is the more difficult control aborning of quasi-beta forging process parameter in it, the less stable of microstructure and property, accompanying drawing 1 is shown in the unstable citing of common TC18 titanium alloy quasi-beta forging tissue.
Summary of the invention
For the problems referred to above, the invention provides a kind of TC18 titanium alloy on screw press across phase region forging process, it can overcome the titanium alloy large-sized stamp work of current TC18 and in actual production process, test the processing parameter obtained by flat-die forging be not suitable for the problem that die forging produces, and can solve the more difficult control and cause the problem of the poor stability of the microstructure and property of forging aborning of quasi-beta forging process parameter.
Its technical scheme is as follows:
TC18 titanium alloy on screw press across a phase region forging process, it comprises following processing step, first, blanking; Then electric screw press is adopted to carry out the forging of β phase region to bar; Again adopt screw press to carry out the die forging of alpha+beta two-phase region to described bar, obtain forging; Finally described forging is heat-treated, it is characterized in that: the described concrete operations carrying out the forging of β phase region to bar are first bar is heated to the following temperature (T of transformation temperature
β-30 ~ 50) DEG C to temperature insulation, then described bar is warming up to (T with stove
β+ 20) DEG C and be incubated, then be transferred on screw press by described bar and forge, forging deformation amount controls 35% ~ 60%;
The described concrete operations carrying out the die forging of alpha+beta two-phase region to bar are described bar is heated to (alpha+beta) two-phase region temperature (T
β-30 ~ 50) DEG C and be incubated, be then transferred in screw press die cavity by described bar and carry out two-phase region die forging, die forging deformation amount controlling is within 30%.
It is further characterized in that:
Wherein said bar is transferred to time controling described screw press within 40 seconds from electric furnace;
In described β phase region forging, bar is heated to the following temperature (T of transformation temperature
β-30 ~ 50) DEG C (alpha+beta) two-phase region temperature (T is heated to bar in soaking time, alpha+beta two-phase region die forging process after temperature
β-30 ~ 50) soaking time DEG C all calculates according to (the maximum net thickness of heat insulating coefficient 0.7min/mm × bar);
Describedly bar in β phase region forging process is carried out to bar be warming up to (T with stove
β+ 20) soaking time DEG C is determined according to actual heat penetration test-results according to bar;
Described heat treated concrete operations are, described forging is heated to 835 DEG C and is incubated 3 hours, cool to 750 DEG C with the furnace and are incubated 2 hours, air cooling to room temperature, more described forging is heated to 600 DEG C and after being incubated 5 hours air cooling to room temperature.
Beneficial effect of the present invention is: it realizes the secondary processing method of the titanium alloy large-sized stamp work of TC18 being carried out to forge across phase region of point fire on electric screw press, making stamp work obtain the even basket knit stitches of excellent performance by arranging rational processing parameter, meeting the requirement of modern aircraft design theory.
Accompanying drawing explanation
Fig. 1 is the excessive forging microstructure picture of current TC18 titanium alloy two-phase region forging deformation amount;
Fig. 2 is the too high forging microstructure picture of current TC18 titanium alloy beta phase region forging deformation quantity not sufficient or temperature;
Fig. 3 is according to present invention process forge mould forging microstructure picture one on screw press according to the present invention;
Fig. 4 is according to present invention process forge mould forging microstructure picture two on screw press according to the present invention.
Embodiment
Embodiment one:
TC18 titanium alloy on screw press across a phase region forging process, it comprises following processing step:
(1) blanking;
(2) electric screw press is adopted to carry out the forging of β phase region to bar: first bar to be heated to (T
β-30) DEG C be incubated to temperature, then bar be warming up to (T with stove
β+ 20) DEG C and be incubated, then be transferred on screw press by bar and forge, the time controling that bar is transferred to screw press from electric furnace controls within 40 seconds transfer time, and hammer number is 1 to hit, and forging deformation amount controls 45%;
(3) adopt screw press to carry out the die forging of alpha+beta two-phase region to described bar again, obtain forging: bar is heated to (alpha+beta) two-phase region temperature (T
β-40) DEG C and be incubated, then bar is transferred in screw press die cavity and carries out two-phase region die forging, the time controling that bar is transferred to screw press from electric furnace controls within 40 seconds transfer time, and hammer number is 2 to hit ~ 3 to hit, and die forging total deformation controls within 30%;
(4) finally forging is heat-treated: forging be heated to 835 DEG C and be incubated 3 hours, cools to 750 DEG C with the furnace and be incubated 2 hours, air cooling to room temperature, more described forging is heated to 600 DEG C and after being incubated 5 hours air cooling to room temperature.
Embodiment two:
TC18 titanium alloy on screw press across a phase region forging process, it comprises following processing step:
(1) blanking;
(2) electric screw press is adopted to carry out the forging of β phase region to bar: first bar to be heated to (T
β-50) DEG C be incubated to temperature, then bar be warming up to (T with stove
β+ 20) DEG C and be incubated, then be transferred on screw press by bar and forge, the time controling that bar is transferred to screw press from electric furnace controls within 40 seconds transfer time, and hammer number is 1 to hit, and forging deformation amount controls 35%;
(3) adopt screw press to carry out the die forging of alpha+beta two-phase region to described bar again, obtain forging: bar is heated to (alpha+beta) two-phase region temperature (T
β-30) DEG C and be incubated, then bar is transferred in screw press die cavity and carries out two-phase region die forging, the time controling that bar is transferred to screw press from electric furnace controls within 40 seconds transfer time, and hammer number is 2 to hit ~ 3 to hit, and die forging total deformation controls within 30%;
(4) finally forging is heat-treated: forging be heated to 835 DEG C and be incubated 3 hours, cools to 750 DEG C with the furnace and be incubated 2 hours, air cooling to room temperature, more described forging is heated to 600 DEG C and after being incubated 5 hours air cooling to room temperature.
Embodiment three:
TC18 titanium alloy on screw press across a phase region forging process, it comprises following processing step:
(1) blanking;
(2) electric screw press is adopted to carry out the forging of β phase region to bar: first bar to be heated to (T
β-40) DEG C be incubated to temperature, then bar be warming up to (T with stove
β+ 20) DEG C and be incubated, then be transferred on screw press by bar and forge, the time controling that bar is transferred to screw press from electric furnace controls within 40 seconds transfer time, and hammer number is 1 to hit, and forging deformation amount controls 60%;
(3) adopt screw press to carry out the die forging of alpha+beta two-phase region to described bar again, obtain forging: bar is heated to (alpha+beta) two-phase region temperature (T
β-50) DEG C and be incubated, then bar is transferred in screw press die cavity and carries out two-phase region die forging, the time controling that bar is transferred to screw press from electric furnace controls within 40 seconds transfer time, and hammer number is 2 to hit ~ 3 to hit, and die forging total deformation controls within 30%;
(4) finally forging is heat-treated: forging be heated to 835 DEG C and be incubated 3 hours, cools to 750 DEG C with the furnace and be incubated 2 hours, air cooling to room temperature, more described forging is heated to 600 DEG C and after being incubated 5 hours air cooling to room temperature.
In above-mentioned three embodiments, in the forging of β phase region, bar is heated to the following temperature (T of transformation temperature
β-30 ~ 50) DEG C (alpha+beta) two-phase region temperature (T is heated to bar in soaking time after temperature and alpha+beta two-phase region die forging process
β-30 ~ 50) soaking time DEG C all calculates according to (the maximum net thickness of heat insulating coefficient 0.7min/mm × bar);
Describedly bar in β phase region forging process is carried out to bar be warming up to (T with stove
β+ 20) soaking time DEG C is determined according to actual heat penetration test-results according to bar.
See the following form according to the mechanical performance data of present invention process forge mould forging on screw press:
Claims (5)
1. TC18 titanium alloy on screw press across a phase region forging process, it comprises following processing step, first, blanking; Then electric screw press is adopted to carry out the forging of β phase region to bar; Again adopt screw press to carry out the die forging of alpha+beta two-phase region to described bar, obtain forging; Finally described forging is heat-treated, it is characterized in that:
The described concrete operations carrying out the forging of β phase region to bar are first bar is heated to the following temperature (T of transformation temperature
β-30 ~ 50) DEG C to temperature insulation, then described bar is warming up to (T with stove
β+ 20) DEG C and be incubated, then be transferred on screw press by described bar and forge, forging deformation amount controls 35% ~ 60%;
The described concrete operations carrying out the die forging of alpha+beta two-phase region to bar are described bar is heated to (alpha+beta) two-phase region temperature (T
β-30 ~ 50) DEG C and be incubated, be then transferred in screw press die cavity by described bar and carry out two-phase region die forging, die forging deformation amount controlling is within 30%.
2. a kind of TC18 titanium alloy according to claim 1 on screw press across phase region forging process, it is characterized in that: bar is transferred to time controling described screw press within 40 seconds from electric furnace.
3. a kind of TC18 titanium alloy according to claim 1 on screw press across phase region forging process, it is characterized in that: in the forging of described β phase region, bar is heated to the following temperature (T of transformation temperature
β-30 ~ 50) DEG C (alpha+beta) two-phase region temperature (T is heated to bar in soaking time, alpha+beta two-phase region die forging process after temperature
β-30 ~ 50) soaking time DEG C all calculates according to (the maximum net thickness of heat insulating coefficient 0.7min/mm × bar).
4. a kind of TC18 titanium alloy according to claim 1 on screw press across phase region forging process, it is characterized in that: describedly bar in β phase region forging process is carried out to bar be warming up to (T with stove
β+ 20) soaking time DEG C is determined according to actual heat penetration test-results according to bar.
5. a kind of TC18 titanium alloy according to claim 1 on screw press across phase region forging process, it is characterized in that: described heat treated concrete operations are, described forging is heated to 835 DEG C and is incubated 3 hours, cool to 750 DEG C with the furnace and be incubated 2 hours, air cooling to room temperature, more described forging is heated to 600 DEG C and after being incubated 5 hours air cooling to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410702805.0A CN104480416A (en) | 2014-11-29 | 2014-11-29 | Cross-phase region forging process of TC18 titanium alloy on screw press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410702805.0A CN104480416A (en) | 2014-11-29 | 2014-11-29 | Cross-phase region forging process of TC18 titanium alloy on screw press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104480416A true CN104480416A (en) | 2015-04-01 |
Family
ID=52755016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410702805.0A Pending CN104480416A (en) | 2014-11-29 | 2014-11-29 | Cross-phase region forging process of TC18 titanium alloy on screw press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104480416A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106734838A (en) * | 2016-12-01 | 2017-05-31 | 贵州安大航空锻造有限责任公司 | TC17 titanium alloy tubular journal forging near isothermal forging manufacturing process |
| CN106734798A (en) * | 2016-11-24 | 2017-05-31 | 郑州大学 | A kind of hot die forming manufacturing process of titanium matter cavity liner |
| CN106984750A (en) * | 2017-03-27 | 2017-07-28 | 宝鸡高新兴隆钛业有限公司 | A kind of processing method of large-size titanium alloy bar |
| CN109261865A (en) * | 2018-09-29 | 2019-01-25 | 西安飞机工业（集团）有限责任公司 | A kind of quasi- β forging deformation control method of TC18 titanium alloy die forging part |
| CN112642976A (en) * | 2020-12-01 | 2021-04-13 | 太原理工大学 | Two-stage non-isothermal forging method for controlling titanium alloy beta forging texture |
| CN114210898A (en) * | 2021-12-06 | 2022-03-22 | 陕西宏远航空锻造有限责任公司 | Preparation method of high-strength high-toughness damage tolerance type titanium alloy bolt forging |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403622A (en) * | 2001-09-04 | 2003-03-19 | 北京航空材料研究院 | Titanium alloy quasi-beta forging process |
| CN102641978A (en) * | 2012-05-17 | 2012-08-22 | 湖南金天钛业科技有限公司 | Method for processing TC18 titanium alloy large-sized section bar |
| CN103014574A (en) * | 2012-12-14 | 2013-04-03 | 中南大学 | Preparation method of TC18 ultra-fine grain titanium alloy |
-
2014
- 2014-11-29 CN CN201410702805.0A patent/CN104480416A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403622A (en) * | 2001-09-04 | 2003-03-19 | 北京航空材料研究院 | Titanium alloy quasi-beta forging process |
| CN102641978A (en) * | 2012-05-17 | 2012-08-22 | 湖南金天钛业科技有限公司 | Method for processing TC18 titanium alloy large-sized section bar |
| CN103014574A (en) * | 2012-12-14 | 2013-04-03 | 中南大学 | Preparation method of TC18 ultra-fine grain titanium alloy |
Non-Patent Citations (1)
| Title |
|---|
| 黄定辉等: "准β锻造工艺对TC18钛合金组织与性能的影响", 《铸造》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106734798A (en) * | 2016-11-24 | 2017-05-31 | 郑州大学 | A kind of hot die forming manufacturing process of titanium matter cavity liner |
| CN106734798B (en) * | 2016-11-24 | 2019-07-16 | 郑州大学 | A kind of hot die forming manufacturing process of titanium matter cavity liner |
| CN106734838A (en) * | 2016-12-01 | 2017-05-31 | 贵州安大航空锻造有限责任公司 | TC17 titanium alloy tubular journal forging near isothermal forging manufacturing process |
| CN106984750A (en) * | 2017-03-27 | 2017-07-28 | 宝鸡高新兴隆钛业有限公司 | A kind of processing method of large-size titanium alloy bar |
| CN106984750B (en) * | 2017-03-27 | 2018-12-18 | 宝鸡高新兴隆钛业有限公司 | A kind of processing method of large-size titanium alloy bar |
| CN109261865A (en) * | 2018-09-29 | 2019-01-25 | 西安飞机工业（集团）有限责任公司 | A kind of quasi- β forging deformation control method of TC18 titanium alloy die forging part |
| CN112642976A (en) * | 2020-12-01 | 2021-04-13 | 太原理工大学 | Two-stage non-isothermal forging method for controlling titanium alloy beta forging texture |
| CN112642976B (en) * | 2020-12-01 | 2022-10-04 | 太原理工大学 | Two-stage non-isothermal forging method for controlling titanium alloy beta forging texture |
| CN114210898A (en) * | 2021-12-06 | 2022-03-22 | 陕西宏远航空锻造有限责任公司 | Preparation method of high-strength high-toughness damage tolerance type titanium alloy bolt forging |
| CN114210898B (en) * | 2021-12-06 | 2024-02-13 | 陕西宏远航空锻造有限责任公司 | Preparation method of high-strength high-toughness damage tolerance type titanium alloy bolt forging |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104480416A (en) | Cross-phase region forging process of TC18 titanium alloy on screw press | |
| CN102644039B (en) | Preparation method of high-quality 6061 aluminium alloy forging for semiconductor equipment | |
| CN110205571B (en) | Preparation method of TC18 titanium alloy large-size bar | |
| CN102851627B (en) | Novel titanium alloy partitioned beta heat treatment process | |
| CN106148762B (en) | A kind of preparation method of low temperature TA7 DT titanium alloy rod bars | |
| CN103706743B (en) | Die-forging forming process of titanium-alloy forged drum piece | |
| CN101838785A (en) | Post weld vacuum heat treatment process of TC18 titanium alloy welding component | |
| CN104773998A (en) | Sintering method of high-density ITO target | |
| CN106521121B (en) | A kind of heat treatment method of high-temperature alloy steel | |
| CN104694863B (en) | A kind of heat treatment method of titanium alloy | |
| CN102534518A (en) | Backboard fabricating method | |
| CN105506525A (en) | Preparation method of Ti2AlNb-based alloy large-size uniform fine-grain bar | |
| CN102699328B (en) | Process for manufacturing large molybdenum electrode | |
| CN103966535A (en) | Beta phase nearly isothermal forging of high-damage tolerant titanium alloy TC4-DT | |
| CN104874604A (en) | Wide thick titanium alloy plate rolling method | |
| CN111136272B (en) | Heat treatment method capable of remarkably reducing strength and plastic anisotropy of LAM titanium alloy | |
| CN104148562A (en) | Cogging method for Ti2AlNb-based alloy ingot | |
| CN103695820A (en) | Forging and heat treatment process of 7050 aluminum alloy | |
| CN103831380A (en) | Die forging forming technology for GH4169 alloy forge piece | |
| CN108555223A (en) | A kind of GH901 alloys diskware manufacturing method | |
| CN104001845A (en) | Forging process method of Ti2AlNb alloy large-size disk parts | |
| CN104694861A (en) | Forging and thermal treatment method of GH4169G alloy | |
| CN108856614B (en) | A kind of forging method of 7000 line aluminium alloy | |
| CN106623916A (en) | Low-temperature sintering method for preparing neodymium-iron-boron magnet | |
| CN104815935B (en) | A kind of T-shaped high temperature alloy GH3617M forging heating method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150401 |
|
| RJ01 | Rejection of invention patent application after publication |