CN107971710A - A kind of manufacture method of TA1 materials ring forging - Google Patents
A kind of manufacture method of TA1 materials ring forging Download PDFInfo
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- CN107971710A CN107971710A CN201711448200.3A CN201711448200A CN107971710A CN 107971710 A CN107971710 A CN 107971710A CN 201711448200 A CN201711448200 A CN 201711448200A CN 107971710 A CN107971710 A CN 107971710A
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Abstract
The invention discloses a kind of manufacture method of TA1 materials ring forging, it is related to the roll forming technical field of annular forging piece.It include blanking, change forging, rectangular section ring billet processed, roll in advance, finish to gauge, Thermal expansion and annealing steps, by carrying out to blank more fire, different temperatures changes forging process, strictly control the deflection of each forging, and Thermal expansion is carried out to ring, optimize material property, forging internal grain degree is refined, solve the problems, such as that TA1 materials ring easily cracks on ring surface in forging, the operation of rolling, finally TA1 ring grain sizes are made to reach more than 6.5 grades, it ensure that the Mass accuracy of product, reduce product rejection rate.
Description
Technical field
The present invention relates to the roll forming technical field of annular forging piece, especially a kind of manufacturer of TA1 materials ring forging
Method.
Background technology
Titanium alloy is mainly used for making aircraft engine compressor part, is secondly the knot of rocket, guided missile and high-speed aircraft
Component.The mid-1960s, titanium and its alloy are applied in general industry, for making the electrode of electrolytic industry, power station
Heater and environment pollution control device of condenser, petroleum refining and sea water desalination etc..Titanium and its alloy become one kind
Corrosion resistance structure material.Additionally it is used to produce hydrogen storage material and marmem etc..Titanium has many obvious superior characteristics：It is close
Spend small (4.5kg/m3), fusing point high (1660 DEG C), corrosion resistance is strong, specific strength is high, plasticity is good, alloying and Re Chu can also be crossed
The method of reason produces the various alloys of high mechanical properties, is ideal aerospace engineering structural material, because aircraft industry is sent out
The needs of exhibition, make Ti industry develop with every year on average about 8% growth rate.
World's titanic alloy machining material annual output is up to more than 40,000 tons, nearly 30 kinds of the titanium alloy trade mark at present.Most popular titanium
Alloy is Ti-6Al-4V (TC4), Ti-5Al-2.5Sn (TA7) and industrially pure titanium (TA1, TA2 and TA3).Titanium alloy has intensity
High and density is small, good mechanical property, toughness and etch resistant properties are fine.It is raw but the wear resistence of titanium alloy is poor, and processing performance is poor
Production. art is complicated, and machining is difficult, in hot-working, is very easy to absorb the impurity such as hydrogen-oxygen nitrogen carbon.
It is different to disclose a kind of titanium alloy by Chinese invention patent specification CN 101279345A disclosed in 8 days October in 2008
The method for rolling and shaping of shape ring forging, this method the alloy bar by specification blanking through jumping-up, punching, roll ring base twice
(without using roll off mould), then blank is put into rolling and shaping in machine for rolling ring roll off mould, by rolling ring base twice in succession
During take small deformation amount shape mode and in each processing step precise control deflection, rolled out tissue and property
The good forging special-shape ring of energy.During using the relatively thin titanium alloy height cylinder ring forging of this method rolling wall thickness, due to the rotation of home roll
Direction and the rotation direction of pre- strip plate are inconsistent, produce the friction of fierceness not between the pass of roll off mould and pre- strip plate during rolling
Only make the operation of rolling highly unstable and production is impacted, but also be easy to cause tissue of the pre- strip plate temperature rise to alloy
Had an impact with performance, the defects of tissue variation, coarse grains such as occur.
TA1 is a kind of industrially pure titanium, and the strength of materials is not high, but plasticity is good, easy to process to embark on journey, the production of TA1 materials ring forging
Product are usually used in the fields such as Aeronautics and Astronautics, nuclear power, and the TA1 material grains degree of manufacturing processes customary production is generally below 4 grades, very
Difficulty reaches more than 6.5 grades, therefore can not usually meet industrial needs.During conventional open die forging base, due to TA1 Surface Oxygens
Change the presence of layer, easily lead to forging surface and easily produce a large amount of crackles, ultimately result in product rejection.Further, since TA1 materials
Intensity is not high, for TA1 high cylinder thin-walled rings, due to the presence of ring internal residual stress after finish to gauge, easily leads to lathe
Product deforms in process, causes product size overproof.
The content of the invention
In order to solve the above technical problems existing in the prior art, the present invention provides a kind of system of TA1 materials ring forging
Method is made, this method reduce ring face crack generation rate, grain size reaches more than 6.5 grades, ensure that the high in quality of product
Degree.
The present invention is achieved by the following technical solutions：
A kind of manufacture method of TA1 materials ring forging, including blanking, change forging, rectangular section ring billet processed, roll in advance, finish to gauge, heat
Bulging, annealing steps, it is comprised the following steps that：
(1) blanking:Bar-shaped raw material are carried out by blanking, blank two after blanking according to product size
End face rounded corner R15~R25；
(2) forging is changed:Blank change forging, pulling, jumping-up, upper and lower end face palpus during jumping-up
Pad 15~20mm asbestos；
(3) rectangular section base：After blank is heated, keeping the temperature, by punching, horse
Rectangular section ring ring billet is obtained after frame reaming；
(4) roll in advance：After the heating of rectangular section ring ring billet, insulation obtained by step (3),
Rolled in advance according to forging design size；
(5) finish to gauge：Gained ring is rolled by pre-, after heating, insulation, ruler is designed according to forging
Little progress row rolls；
(6) Thermal expansion：Finish to gauge forging is heated, bulging after insulation；
(7) anneal：Using Furnace anneal, stove fire is heated to 600~640 DEG C DEG C, by the forging shove charge of Thermal expansion, temperature
100~120min, air cooling of coming out of the stove are kept the temperature after stabilization.
The fire time of forging point three that changes carries out；
The first time changes forging heating-up temperature：1000~1020 DEG C, soaking time t1 is 8min/10mm × effective thickness
Degree；
The forging heating-up temperature that changes for the second time is 850~920 DEG C, and soaking time t2 is 6min/10mm × effective thickness；
It is 780~820 DEG C that the third time, which changes forging heating-up temperature, and soaking time t3 is 6min/10mm × effective thickness.
The jumping-up, each volume under pressure are less than 60mm.
The pulling, each volume under pressure are less than 50mm.
The rectangular section base, heating-up temperature are 680~730 DEG C；Soaking time t4 is 6min/10mm × effective thickness
Degree.
The rectangular section base, in saddle support reaming, each volume under pressure is less than 15mm.
For the pre- heating-up temperature of rolling for 650~720 DEG C, soaking time t5 is 6min/10mm × effective thickness.
The control of ring coarsening rate is controlled in 5~10mm in 2~4mm/s, cone roller volume under pressure during described pre- rolling.
The finish to gauge heating-up temperature：620~660 DEG C, soaking time t6 is 6min/10mm × effective thickness.
The finish to gauge ring coarsening rate control is controlled in 8~12mm in 3~5mm/s, cone roller volume under pressure.
The Thermal expansion heating-up temperature：550~650 DEG C, soaking time t7 is 6min/10mm × effective thickness.
The Thermal expansion, bulging deformation amount controlling between 0.5%~1.5%, the control of each bulging amount 0.5%~
0.8%.
It is described it is pre- roll after, surface inspection is carried out to forging, is not allowed there are crackle and other defect, such as blank table
There is crackle in face, polishes along direction of check and continues technique after eliminating crackle.
After the saddle support, surface inspection is carried out to forging, is not allowed there are crackle and other defect, such as blank table
There is crackle in face, polishes along direction of check and continues technique after eliminating crackle.
It is described change forging per fire after, surface inspection is carried out to forging, is not allowed there are crackle and other defect, such as
Blank surface has crackle, polishes along direction of check and continues technique after eliminating crackle.
Beneficial effect of the present invention：
(1) present invention is by strictly controlling the deflection of each forging and per fire time gap forging surface quality inspection, row
Wound, solves TA1 materials ring and is easily cracked on ring surface in forging, the operation of rolling, cause the technology of product rejection
Difficult point.
(2) present invention is before open die forging base, and by carrying out more fire to blank, different temperatures changes forging process, optimization
Material property, refines internal grain degree, has finally obtained the TA1 rings that grain size reaches more than 6.5 grades, meet client's
Demand.
(3) present invention carries out Thermal expansion before annealing heat-treats to ring, while improving Product Precision, reduces forging
Internal residual stress, ensure that the Mass accuracy of product.
Embodiment
Limited with reference to specific embodiment technical scheme is further, but claimed
Scope is not only limited to made description.
Embodiment 1
A kind of manufacture method of TA1 materials ring forging, including blanking, change forging, rectangular section ring billet processed, roll in advance, finish to gauge, heat
Bulging, annealing steps, it is comprised the following steps that：
(1) blanking:Bar-shaped raw material are carried out by blanking, blank both ends of the surface rounded corner R15- after blanking according to product size
R25。
(2) forging is changed:Points three fire carry out changing forging, pull out repeatedly, jumping-up, and upper and lower end face must pad 15mm asbestos, upsetting during jumping-up
Each volume under pressure be 10mm when thick, and each volume under pressure be 5mm during pulling, per fire it is secondary change forging after, to forging progress surface inspection
Look into, do not allow there are crackle and other defect, as blank surface has crackle, polish along direction of check and continue work after eliminating crackle
Skill；Change forging heating-up temperature for the first time：1000 DEG C, soaking time：T1=8min/10mm × effective thickness；Change forging heating for the second time
Temperature：850 DEG C, soaking time：T2=6min/10mm × effective thickness, (melting down soaking time while hot to halve)；Third time changes forging
Heating-up temperature：780 DEG C, soaking time：T3=6min/10mm × effective thickness, (melting down soaking time while hot to halve).
(3) rectangular section base：Heating-up temperature：680 DEG C, soaking time：T4=6min/10mm × effective thickness, (while hot
Soaking time is melted down to halve), blank obtains rectangular section ring ring billet after punching, saddle support reaming, during saddle support reaming, every time
Volume under pressure is 1mm, and after saddle support, surface inspection is carried out to forging, does not allow that there are crackle and other defect, such as blank surface
There is crackle, polish along direction of check and continue technique after eliminating crackle.
(4) roll in advance：Roll heating-up temperature in advance：650 DEG C, soaking time：T5=6min/10mm × effective thickness；(melt down while hot
Soaking time halves), rolled in advance according to forging design size, ring coarsening rate is 2mm/s during rolling, and cone roller volume under pressure is
5mm.It is pre- roll after, surface inspection is carried out to forging, is not allowed there are crackle and other defect, as blank surface has crackle,
Polish along direction of check and continue technique after eliminating crackle.
(5) finish to gauge：Finish to gauge heating-up temperature：620 DEG C, soaking time：T6=6min/10mm × effective thickness (melts down while hot
Soaking time halves), rolled according to forging design size, ring coarsening rate is 3mm/s, and cone roller volume under pressure is 8mm.
(6) Thermal expansion：Forging is heated before bulging, heating-up temperature：550 DEG C, soaking time：T7=6min/10mm
× effective thickness (melts down soaking time to halve) while hot；Bulging deflection is 0.5%, and each bulging amount is 0.5%.
(7) anneal：Stove is heated to 600 DEG C, to warm shove charge, after keeping the temperature 100min after temperature stabilization, comes out of the stove air-cooled.
Embodiment 2
A kind of manufacture method of TA1 materials ring forging, including blanking, change forging, rectangular section ring billet processed, roll in advance, finish to gauge, heat
Bulging, annealing steps, it is comprised the following steps that：
(1) blanking:Bar-shaped raw material are carried out by blanking, blank both ends of the surface rounded corner R15- after blanking according to product size
R25。
(2) forging is changed:Points three fire carry out changing forging, pull out repeatedly, jumping-up, and upper and lower end face must pad 18mm asbestos, upsetting during jumping-up
Each volume under pressure 40mm when thick, each volume under pressure 30mm during pulling, after changing forging per fire, surface inspection is carried out to forging,
Do not allow there are crackle and other defect, as blank surface has crackle, polish along direction of check and continue technique after eliminating crackle；The
Once change forging heating-up temperature：1020 DEG C, soaking time：T1=8min/10mm × effective thickness；Change forging heating-up temperature for the second time：
920 DEG C, soaking time：T2=6min/10mm × effective thickness；(melting down soaking time while hot to halve)；Third time changes forging heating
Temperature：820 DEG C, soaking time：T3=6min/10mm × effective thickness；(melting down soaking time while hot to halve).
(3) rectangular section base：Heating-up temperature：730 DEG C, soaking time：T4=6min/10mm × effective thickness；(while hot
Soaking time is melted down to halve), blank obtains rectangular section ring ring billet after punching, saddle support reaming, during saddle support reaming, every time
Volume under pressure 10mm, after saddle support, surface inspection is carried out to forging, does not allow that there are crackle and other defect, such as blank surface
There is crackle, polish along direction of check and continue technique after eliminating crackle.
(4) roll in advance：Roll heating-up temperature in advance：720 DEG C, soaking time：T5=6min/10mm × effective thickness；(melt down while hot
Soaking time halves), rolled in advance according to forging design size, during rolling the control of ring coarsening rate pushed in 3mm/s, cone roller
Amount control is in 7mm.It is pre- roll after, surface inspection is carried out to forging, does not allow that there are crackle and other defect, such as blank surface
There is crackle, polish along direction of check and continue technique after eliminating crackle.
(5) finish to gauge：Finish to gauge heating-up temperature：660 DEG C, soaking time：T6=6min/10mm × effective thickness (melts down while hot
Soaking time halves), rolled according to forging design size, the control of ring coarsening rate is in 4mm/s, the control of cone roller volume under pressure
In 10mm.
(6) Thermal expansion：Forging is heated before bulging, heating-up temperature：650 DEG C, soaking time：T7=6min/10mm
× effective thickness (melts down soaking time to halve) while hot；Bulging deformation amount controlling is 1%, and each bulging amount control is 0.6%.
(7) anneal：Stove is heated to 640 DEG C, to warm shove charge, after keeping the temperature 110min after temperature stabilization, comes out of the stove air-cooled.
Embodiment 3
A kind of manufacture method of TA1 materials ring forging, including blanking, change forging, rectangular section ring billet processed, roll in advance, finish to gauge, heat
Bulging, annealing steps, it is comprised the following steps that：
(1) blanking:Bar-shaped raw material are carried out by blanking, blank both ends of the surface rounded corner R15- after blanking according to product size
R25。
(2) forging is changed:Points three fire carry out changing forging, pull out repeatedly, jumping-up, and upper and lower end face must pad 20mm asbestos, upsetting during jumping-up
Each volume under pressure 60mm when thick, each volume under pressure 50mm during pulling, after changing forging per fire, surface inspection is carried out to forging,
Do not allow there are crackle and other defect, as blank surface has crackle, polish along direction of check and continue technique after eliminating crackle；The
Once change forging heating-up temperature：1010 DEG C, soaking time：T1=8min/10mm × effective thickness；Change forging heating-up temperature for the second time：
910 DEG C, soaking time：T2=6min/10mm × effective thickness；(melting down soaking time while hot to halve)；Third time changes forging heating
Temperature：800 DEG C, soaking time：T3=6min/10mm × effective thickness；(melting down soaking time while hot to halve).
(3) rectangular section base：Heating-up temperature：710 DEG C, soaking time：T4=6min/10mm × effective thickness；(while hot
Soaking time is melted down to halve), blank obtains rectangular section ring ring billet after punching, saddle support reaming, during saddle support reaming, every time
Volume under pressure 15mm, after saddle support, surface inspection is carried out to forging, does not allow that there are crackle and other defect, such as blank surface
There is crackle, polish along direction of check and continue technique after eliminating crackle.
(4) roll in advance：Roll heating-up temperature in advance：690 DEG C, soaking time：T5=6min/10mm × effective thickness；(melt down while hot
Soaking time halves), rolled in advance according to forging design size, during rolling the control of ring coarsening rate pushed in 4mm/s, cone roller
Amount control is in 10mm.After rolling in advance, surface inspection is carried out to forging, is not allowed there are crackle and other defect, such as blank table
There is crackle in face, polishes along direction of check and continues technique after eliminating crackle.
(5) finish to gauge：Finish to gauge heating-up temperature：650 DEG C, soaking time：T6=6min/10mm × effective thickness (melts down while hot
Soaking time halves), rolled according to forging design size, the control of ring coarsening rate is in 5mm/s, the control of cone roller volume under pressure
In 12mm.
(6) Thermal expansion：Forging is heated before bulging, heating-up temperature：610 DEG C, soaking time：T7=6min/10mm
× effective thickness (melts down soaking time to halve) while hot；Bulging deformation amount controlling is 1.5%, and each bulging amount control is 0.8%.
(7) anneal：Stove is heated to 630 DEG C, to warm shove charge, after keeping the temperature 120min after temperature stabilization, comes out of the stove air-cooled.
The main chemical elements content (percentage by weight) of TA1 alloys of the present invention is：Amount containing Fe≤0.07%, C content≤
0.06%th, leaded wastewater≤0.03%, amount containing H≤0.007%, amount containing O≤0.08%, other elements it is single≤0.05%, summation
≤ 0.2% (other elements include：Al, V, Sn, Mo, Cr, Mn, Zr, Ni, Cu, Si, Y, wherein Y contents mass fraction are not more than
0.005%) remaining is Ti.
According to GB/T 231.1-2009《Metal material Brinell hardness test》Part 1：Test method detects, the present invention
The ball hardness number of TA1 material ring forgings is 120~135HB W.
According to GB/T 6394-2002《Metal mean grain size assay method》Detection, TA1 materials ring forging of the present invention
Grain size is 6.5~7.5 grades.
Above-mentioned Physico-chemical tests the result shows that, using above method rolling and shaping TA1 materials ring forging have it is excellent in
Portion organizes and performance, has fully met the requirement of the alloy forged piece.
The above embodiment is not limited to using the TA1 material ring forgings of method rolling and shaping provided by the invention, for
The ring forging of different shape and size, only need to change forging design shape and size, according to the method described above can roll off go out difference
The ring forging of cross sectional shape.Rolling and shaping of the present invention is that the pre- strip plate of ring forging is rolled cyclization forging by roll off mould
The forming mode of part.
Claims (10)
1. a kind of manufacture method of TA1 materials ring forging, including blanking, change forging, rectangular section ring billet processed, roll in advance, finish to gauge, heat expansion
Shape, annealing steps, it is characterised in that comprise the following steps that：
(1) blanking:Bar-shaped raw material are carried out by blanking, blank both ends of the surface rounded corner R15~R25 after blanking according to product size；
(2) forging is changed:Blank change forging, pulling, jumping-up, upper and lower end face must pad 15~20mm asbestos during jumping-up；
(3) rectangular section base：After blank is heated, keeping the temperature, rectangular section ring is obtained after punching, saddle support reaming
Ring billet；
(4) roll in advance：After the heating of rectangular section ring ring billet, insulation obtained by step (3), carried out according to forging design size pre-
Roll；
(5) finish to gauge：Gained ring is rolled by pre-, after heating, insulation, finish to gauge is carried out according to forging design size；
(6) Thermal expansion：Finish to gauge forging is heated, bulging after insulation；
(7) anneal：Using Furnace anneal, stove fire is heated to 600~640 DEG C, by the forging shove charge of Thermal expansion, after temperature stabilization
Keep the temperature 100~120min, air cooling of coming out of the stove.
2. the manufacture method of TA1 materials ring forging as claimed in claim 1, it is characterised in that described changes the fire of forging point three
Carry out；
It is 1000~1020 DEG C that the first time, which changes forging heating-up temperature,；Soaking time is 8min/10mm × effective thickness；
The forging heating-up temperature that changes for the second time is 850~920 DEG C；Soaking time is 6min/10mm × effective thickness；
It is 780~820 DEG C that the third time, which changes forging heating-up temperature,；Soaking time is 6min/10mm × effective thickness.
3. the manufacture method of TA1 materials ring forging as claimed in claim 1, it is characterised in that the jumping-up, pushes every time
Amount is less than 60mm；
The pulling, each volume under pressure are less than 50mm.
4. the manufacture method of TA1 materials ring forging as claimed in claim 1, it is characterised in that the rectangular section base,
Heating-up temperature is 680~730 DEG C；Soaking time is 6min/10mm × effective thickness；
The each volume under pressure of saddle support reaming described in the rectangular section base is less than 15mm.
5. the manufacture method of TA1 materials ring forging as claimed in claim 1, it is characterised in that described pre- to roll heating-up temperature
For 650~720 DEG C；Soaking time is 6min/10mm × effective thickness.
6. the manufacture method of TA1 materials ring forging as claimed in claim 1, it is characterised in that ring during described pre- rolling
Part coarsening rate is 2~4mm/s；Cone roller volume under pressure is 5~10mm.
7. the manufacture method of TA1 materials ring forging as claimed in claim 1, it is characterised in that the finish to gauge heating-up temperature
For 620~660 DEG C；Soaking time is 6min/10mm × effective thickness.
8. the manufacture method of TA1 materials ring forging as claimed in claim 1, it is characterised in that the finish to gauge ring is grown up
Speed is 3~5mm/s, and cone roller volume under pressure is 8~12mm.
9. the manufacture method of TA1 materials ring forging as claimed in claim 1, it is characterised in that the Thermal expansion heating temperature
Spend for 550~650 DEG C；Soaking time is 6min/10mm × effective thickness.
10. the manufacture method of TA1 materials ring forging as claimed in claim 1, it is characterised in that the Thermal expansion bulging becomes
Shape amount is 0.5%~1.5%, and each bulging amount is 0.5%~0.8%.
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| CN112589020A (en) * | 2020-11-12 | 2021-04-02 | 贵州航宇科技发展股份有限公司 | Waspaloy thin-wall ring forging forming method |
| CN112589021A (en) * | 2020-11-17 | 2021-04-02 | 贵州航宇科技发展股份有限公司 | Manufacturing method of IN718 alloy double-flange high-barrel casing ring piece |
| CN112719928A (en) * | 2020-12-21 | 2021-04-30 | 武汉理工大学 | Intelligent production method and system of annular forging |
| CN113881859A (en) * | 2020-06-19 | 2022-01-04 | 新疆大学 | Preparation method of middle and small-sized titanium and titanium alloy thin-walled tube |
| CN113878083A (en) * | 2021-09-23 | 2022-01-04 | 中航卓越锻造（无锡）有限公司 | TA1 ring forging and preparation method thereof |
| CN114309388A (en) * | 2021-12-31 | 2022-04-12 | 无锡派克新材料科技股份有限公司 | Forging process of steel ring forging with ultrahigh-strength structure |
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| CN113881859B (en) * | 2020-06-19 | 2022-11-11 | 新疆大学 | Preparation method of middle and small-sized titanium and titanium alloy thin-walled tube |
| CN112589020A (en) * | 2020-11-12 | 2021-04-02 | 贵州航宇科技发展股份有限公司 | Waspaloy thin-wall ring forging forming method |
| CN112589021A (en) * | 2020-11-17 | 2021-04-02 | 贵州航宇科技发展股份有限公司 | Manufacturing method of IN718 alloy double-flange high-barrel casing ring piece |
| CN112719928A (en) * | 2020-12-21 | 2021-04-30 | 武汉理工大学 | Intelligent production method and system of annular forging |
| CN113878083A (en) * | 2021-09-23 | 2022-01-04 | 中航卓越锻造（无锡）有限公司 | TA1 ring forging and preparation method thereof |
| CN113878083B (en) * | 2021-09-23 | 2024-01-26 | 中航卓越锻造（无锡）有限公司 | TA1 ring forging and preparation method thereof |
| CN114309388A (en) * | 2021-12-31 | 2022-04-12 | 无锡派克新材料科技股份有限公司 | Forging process of steel ring forging with ultrahigh-strength structure |
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