CN115647267A - Forming method of splayed titanium alloy special-shaped ring forging with large inclination angle - Google Patents
Forming method of splayed titanium alloy special-shaped ring forging with large inclination angle Download PDFInfo
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- CN115647267A CN115647267A CN202211358992.6A CN202211358992A CN115647267A CN 115647267 A CN115647267 A CN 115647267A CN 202211358992 A CN202211358992 A CN 202211358992A CN 115647267 A CN115647267 A CN 115647267A
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- 238000005242 forging Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 33
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 23
- 238000005096 rolling process Methods 0.000 claims abstract description 63
- 238000003825 pressing Methods 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000004080 punching Methods 0.000 claims abstract description 20
- 238000007493 shaping process Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims description 11
- 235000015895 biscuits Nutrition 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract 1
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- 238000005516 engineering process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
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Abstract
The invention discloses a method for forming a titanium alloy special-shaped ring forging with a large dip angle in a shape like Chinese character 'ba'; in order to ensure that a special-shaped ring forging with a large inclination angle can be rolled smoothly, a special-shaped ring preform needs to be performed on the ring forging in advance, and the key point is to design a reasonable preform process step and a required preform tool. If the preparation of the splayed titanium alloy special-shaped ring forging with the large inclination angle is realized, the design and forging steps of a pre-blank tool are as follows: designing a pressing block and a small semicircular horse rod for primary reaming; designing a pressing block and a large semicircular rod for secondary reaming; step three, upsetting and punching; step four, hole expansion is carried out for one time; step five, secondary hole expansion; step six, shaping; step seven, rolling for one time; step eight, secondary rolling; the forging forming method can be suitable for manufacturing the splayed titanium alloy special-shaped ring forging with a large inclination angle (15-30 degrees), and the material utilization rate of splayed ring parts with large inclination angles is improved.
Description
Technical Field
The invention relates to the technical field of titanium alloy special-shaped ring forgings, in particular to a method for forming a large-inclination-angle splayed titanium alloy special-shaped ring forging.
Background
With the progress of the manufacturing technology of the aero-engine, the titanium alloy is taken as an ideal metal with low density and high strength, and gradually replaces the original parts of the high-specific gravity stainless steel on the aero-engine. However, the titanium alloy raw material cost is high, the manufacturing cost of the aircraft engine is increased, in order to reduce the cost, a processing technical means needs to be continuously improved to improve the utilization rate of the raw material, and particularly, for non-rectangular section ring-shaped parts on the engine, a corresponding special-shaped section ring-shaped forging blank is adopted, the material utilization rate can be generally improved by more than 30%, and the method is one of important means for improving the utilization rate of the raw material.
Aiming at the forming method of the splayed titanium alloy ring forging, the prior art mostly aims at the splayed special-shaped rolling method with a small inclination angle (generally less than 10 degrees), but because the flow of metal to the circumferential dimension is far larger than the radial local flow in the rolling process, when the inclination angle is more than 15 degrees, the local part of the near angle of the special-shaped section is extremely difficult to fill.
Disclosure of Invention
In order to solve the technical problem, a method for forming a splayed titanium alloy special-shaped ring forging with a large inclination angle is provided, and the specific technical scheme is as follows:
a forming method of a splayed titanium alloy special-shaped ring forging with a large inclination angle comprises the following steps:
the method comprises the following steps: designing a pressing block and a small semicircular horse rod for primary reaming;
marking the outer diameter D of the profiled ring according to the specific dimension of the profiled ring to be finally formed Outside diameter min 、D Inner diameter min Ring height H and angle of inclination α;
designing the size structure of a small semicircular horse rod and a pressing block for chambering of the prefabricated blank according to the inclination angle alpha of the ring forging;
small semicircular horse rod structural design
Wherein alpha is 1 =（α-5）/2
D 1 =D Punching hole -10
L Work in ≥2H
H Trough ≥10
L Total length of ≥1.5×B Horse rack
Structure design of pressing block for primary reaming
Wherein alpha is 1 =（α-5）/2；
L Work by ≥2H
L' Total length of ≥L Work by
B Work by ≥100；
Step two: designing a pressing block and a large semicircular rod for secondary reaming;
designing the size structure of a small semicircular horse rod and a pressing block for chambering of the prefabricated blank according to the inclination angle alpha of the ring forging;
structural design of large semicircular horse rod
Wherein alpha is 2 =α-5
H Half of a body =D Punching hole +20
H' Half of = D Punching hole -20
B Most of the time = H Half of
L Work by ≥2H
H Trough ≥10
L Total length of ≥1.5×B Horse frame
Structure design of pressing block for secondary reaming
Wherein alpha is 2 =α-5
L Work by ≥2H
L' Total length of ≥L Work by
B Work by ≥100；
Step three: upsetting and punching;
according to the volume required by the metal raw material required by the forming of the special-shaped ring forging, after the specification of the original titanium alloy bar is selected, a primary blank making step is carried out, wherein the primary blank making step is designed as primary upsetting → secondary upsetting → punching;
wherein the relation between the selection of the blank diameter specification and the blank height H meets the following requirements:
1.5D material ≥H Material ≥D Material
Designing the upsetting step pressing amount:
H heading 2 =H-10
H Heading 1 =H Material -（H Material -H Heading 2 ）×0.6=0.4 H Material +0.6 H Heading 2
Design of punch diameter: (D) Blank /2）≥D Punching hole ≥（D Blank /3）；
Step four: one-time hole enlarging
Obtaining a punched cake blank through the third step, carrying out a hole expanding process step, and utilizing a hole expanding pressing block and a small semicircular mandril tool designed in the first step, wherein the small semicircular mandril passes through a clamping groove H on a hydraulic quick forging machine Device for placing Is fixed on a horse frame B Horse rack The punched biscuit is sleeved on a small semicircular horse rod, a primary reaming pressing block is arranged below a hammer anvil surface on a hydraulic fast-segment machine, and a biscuit ring is fixedly controlled to transversely shift in the reaming process through an operating manipulator in the lateral direction of the biscuit so as to ensure the forming of an splayed inclination angle of a forge piece;
the design of the blank size after once reaming, wherein the inner diameter size and the control wall thickness of once reaming need to satisfy:
D one expanded inner hole ≥( 
+10)
And satisfy B One-time expanding device ≤B Blank -（B Blank -
）×0.6=0.4B Blank +B Wall thickness ；
Step five: secondary reaming
After the primary reaming obtained in the step fourUsing the secondary reaming pressing block and the big semicircular horse bar tool designed in the step two to forge the rough blank on a hydraulic quick forging machine through the clamping groove H Device for placing Is fixed on a horse frame B Horse rack The rough blank after primary reaming is sleeved on a large semicircular horse rod, a secondary reaming pressing block is arranged below a hammer anvil surface on a hydraulic fast-segment machine, and the transverse offset of a rough blank ring in the reaming process is fixedly controlled by operating a manipulator in the lateral direction of the rough blank so as to ensure that the splayed inclination angle of the forge piece is further formed;
the design of the billet size after the secondary reaming, wherein the secondary reaming's internal diameter size and control wall thickness need satisfy:
D two-expanding inner hole ≥(D Core roller +10)
(wherein D Core roller For rolling the maximum diameter of the core roller for profile rolling
And B Second time expansion = 
；
Step six: shaping of
Obtaining a deformed ring blank subjected to secondary hole expansion through the fifth step, wherein the height of the blank needs to be regulated to the design height H value of a finished product forged piece of the deformed ring through shaping due to the fact that the blank is expanded in the height direction of the ring in the hole expansion process; in consideration of the problem, the inclination angle reservation design is already made on the twice reaming tool, and vertical pressing leveling can be directly carried out in the height direction; the height of the blank after secondary hole expansion is H Rough blank Shaping to a target value H through upper and lower flat anvil surfaces of forging press equipment, wherein an included angle alpha is formed between the outer diameter of the shaped blank and the outer diameter before shaping 3 Empirical value of alpha 3 ≈5°；
Step seven: one-pass rolling
Obtaining a special-shaped prefabricated blank which can be used for rolling through the sixth step, and further forming in the seventh rolling step; the rolling process comprises a main roller, a rough blank, a core roller, a lower conical roller and an upper conical roller, wherein the special-shaped design of the main roller and the core roller is designed according to the outer diameter and the inner diameter of the finished product of the splayed ring forge piece;
wherein the radial feed speed V of the core roller Core rolling =0.5mm/s；
Wherein the linear velocity V of the main roller Main-rolling =0.5m/s；
The size design of the blank a is formed after the blank is rolled for one time, wherein B An expanded wall thickness =
H is the product ring height, and phi D can be inquired through UG three-dimensional modeling One-pass rolling Value, in one rolling process, rolling stop condition is phi D Stop at one time =ΦD One-pass rolling ；
Step eight: secondary rolling
Obtaining a pre-rolled piece which can be used for final rolling forming through the seventh step, and realizing the forming of the final ring forging in the eighth step, wherein the rolling part comprises a main roller, a rough blank a, a core roller, a lower conical roller and an upper conical roller, and the special-shaped design of the main roller and the core roller is designed according to the outer diameter and the inner diameter surface of the final finished product of the splayed ring forging;
wherein the radial feed speed V of the core roller Core two-pass =0.5mm/s；
Wherein the controlled speed linear velocity V of the main roller Main two rolling =0.7m/s；
The distance between the conical rollers is H;
rolling stop condition is D Outside diameter min 。
The preferable scheme of the forming method of the splayed titanium alloy special-shaped ring forging with the large inclination angle is that the forming method is suitable for manufacturing the splayed titanium alloy special-shaped ring forging with the large inclination angle of 15-30 degrees.
Advantageous effects
In practical application, the inclination angle of the outline inclination angle of the section of a ring part of a certain part is larger than 30 degrees, a titanium alloy forging with a small inclination angle in the shape of a Chinese character 'ba' with an inclination angle of 10 degrees, an average outer diameter phi 600, a ring height of 70 and a wall thickness of 50 is used for carrying out containment design, the weight of the forging is about 28kg, and the cost of raw materials is about 1.4 ten thousand. If the special-shaped ring forming method is adopted, the inclination angle design of the special-shaped ring forging is improved to 30 degrees, the forging is about 13 kilograms, the raw material cost is about 0.65 ten thousand yuan, the raw material utilization rate is improved by 53 percent, and the raw material cost is saved by 0.75 ten thousand yuan.
The technical scheme of the invention overcomes the phenomenon that the sharp angle of the section is not easy to fill due to the fact that the metal flow distribution in the circumferential direction is far greater than the radial flow distribution in the rolling process, thereby ensuring that the splayed special-shaped ring forging with a large inclination angle (15-30 degrees) can be rolled smoothly and improving the material utilization rate by more than 20 percent.
The technology can be used for manufacturing the forging of the splayed titanium alloy special-shaped ring forging with a large inclination angle (15-30 degrees), can effectively improve the utilization rate of raw materials and further reduces the manufacturing cost of the aero-engine.
Drawings
FIG. 1 is a V-shaped ring forging;
FIG. 2 is a structural design of a small semicircular horse stick;
FIG. 3 is a structural design of a press block for primary reaming;
FIG. 4 is a structural design of a large semicircular horse stick;
FIG. 5 is a structural design of a press block for secondary reaming;
FIG. 6 is a schematic view of a cake blank after upsetting and punching;
FIG. 7 is a schematic view of a single reaming of a biscuit;
FIG. 8 is a schematic view of a pierced billet structure after primary hole expansion;
FIG. 9 is a schematic view of secondary broaching of the block;
FIG. 10 is a schematic view of a blank structure of the deformed ring after secondary hole expansion;
FIG. 11 is a schematic view of the shaped ring block;
FIG. 12 is a schematic view of a primary rolling apparatus;
FIG. 13 is a schematic view of a one-time rolling billet size structure;
FIG. 14 is a schematic structural view of a secondary rolling apparatus.
In the figure: 1-hydraulic fast segment machine, 2-primary chambering press block, 3-small semicircle horse bar, 4-cake blank, 5-operation manipulator, 6-secondary chambering press block, 7-large semicircle horse bar, 8-rough blank, 9-horse rack, 10-main roller, 11-core roller, 12-lower cone, 13-upper cone roller and 14-rough blank a.
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings, which illustrate examples of embodiments of the invention and are illustrated in the accompanying drawings in fig. 1-14.
The invention provides a method for forming a V-shaped titanium alloy special-shaped ring forging with a large inclination angle, which comprises the following steps:
the method comprises the following steps: designing a pressing block and a small semicircular horse rod for primary reaming;
according to the concrete size of the profiled ring to be finally formed, marking the external diameter D of the profiled ring Outside diameter min 、D Inner diameter min Ring height H and tilt angle α, as shown in fig. 1;
and designing the size structure of the small semicircular horse rod and the pressing block for chambering the preformed blank according to the inclination angle alpha of the ring forging.
The small semicircular horse rod structure is designed as shown in figure 2;
wherein alpha is 1 =（α-5）/2；
D 1 =D Punching hole -10
L Work by ≥2H
H Trough ≥10
L Total length of ≥1.5×B Horse rack
The structure design of the pressing block for primary reaming is shown in figure 3;
wherein alpha is 1 =（α-5）/2；
L Work in ≥2H
L' Total length of ≥L Work by
B Work in ≥100；
Step two: designing a pressing block and a large semicircular rod for secondary reaming;
designing the size structure of a small semicircular horse rod and a pressing block for chambering of the prefabricated blank according to the inclination angle alpha of the ring forging;
the structural design of the big semicircular horse rod is shown in figure 4;
wherein alpha is 2 =α-5
H Half of =D Punching hole +20
H' Half of a body = D Punching hole -20
B Most of the time = H Half of
L Work in ≥2H
H Trough ≥10
L Total length of ≥1.5×B Horse frame ；
The structure design of the pressing block for secondary reaming is shown in figure 5;
wherein alpha is 2 =α-5；
L Work by ≥2H
L' Total length of ≥L Work by
B Work by ≥100；
Step three: upsetting and punching;
according to the volume required by the metal raw material required by the forming of the special-shaped ring forging, after the specification of the original titanium alloy bar is selected, a primary blank making step is carried out, and as shown in figure 6, the primary blank making step is designed as primary upsetting → secondary upsetting → punching;
wherein the relation between the selection of the blank diameter specification and the blank height H meets the following requirements:
1.5D material ≥H Material ≥D Material
Designing the upsetting step pressing amount:
H heading 2 =H-10
H Heading 1 =H Material -（H Material -H Heading 2 ）×0.6=0.4 H Material +0.6 H Heading 2
Design of punch diameter: (D) Blank /2）≥D Punching hole ≥（D Blank /3）；
Step four: one-step hole enlarging
And (3) obtaining a punched cake blank 4 through the third step, performing a reaming step, and utilizing a reaming pressing block 2 and a small semicircular horse rod 3 tool designed in the first step, wherein the small semicircular horse rod 3 passes through a clamping groove H on a hydraulic quick forging machine 1 as shown in figure 7 Device for placing Is fixed on the horse frame 9B Horse frame And the punched cake blank 4 is sleeved on the small semicircular horse rod 3, and the primary reaming pressing block 2 is arranged below the hammering block surface on the hydraulic fast segment machine 1. In the lateral direction of the cake blank 4, as shown in the view in the direction A of fig. 7, the manipulator 5 is operated to fixedly control the transverse offset of the cake blank 4 ring in the reaming process so as to ensure the formation of the splay inclination angle of the forge piece;
the blank size after primary reaming is designed as shown in fig. 8, wherein the inner diameter and the control wall thickness of the primary reaming need to satisfy the following requirements:
D one expanded inner hole ≥(
+10)
And satisfy B One-time expanding device ≤B Blank -（B Blank -
）×0.6=0.4B Blank +B Wall thickness ；
Step five: secondary hole enlarging
And (3) utilizing the secondary reaming pressing block 6 and the big semicircular horse bar 7 tool designed in the step (II) to manufacture the primary reamed rough blank 8 obtained in the step (IV), wherein the big semicircular horse bar 7 passes through the clamping groove H on the hydraulic quick forging machine 1 as shown in figure 9 Device for placing Is fixed on the horse frame 9B Horse rack And the primary reamed rough blank 8 is sleeved on the large semicircular horse rod 7, and the secondary reaming pressing block 6 is arranged below the anvil surface on the hydraulic fast segment machine 1. In the lateral direction of the blank 8, as shown in the view from the direction of fig. 9A, the manipulator 5 is operated to fixedly control the transverse offset of the blank 8 ring in the reaming process so as to ensure that the splayed inclination angle of the forge piece is further formed;
the blank size after secondary reaming is designed as shown in fig. 10, wherein the inner diameter and the control wall thickness of the secondary reaming need to satisfy the following requirements:
D two-expanding inner hole ≥D Core roller +10
(wherein D Core roller For maximum diameter of special-shaped rolling core roller)
And B Secondary expanding = 
；
Step six: shaping;
and step five, obtaining the deformed ring blank subjected to secondary hole expansion, wherein the height of the blank is regulated to the design height H value of the finished deformed ring forging through shaping due to the fact that the blank is expanded in the height direction of the middle ring in the hole expansion process. In consideration of the problem, an inclination angle reservation design is already made on a tool for reaming twice, and vertical pressing leveling can be directly carried out in the height direction; as shown in FIG. 11, twoThe height of the blank after secondary hole expansion is H Rough block Shaping to a target value H through upper and lower flat anvil surfaces of forging press equipment, wherein an included angle alpha is formed between the outer diameter of the shaped blank and the outer diameter before shaping 3 Empirical value of alpha 3 ≈5°；
Step seven: one-pass rolling
Obtaining a special-shaped prefabricated blank which can be used for rolling through the sixth step, and further forming in the seventh rolling step; as shown in fig. 12, the rolling process is composed of a main roll 10, a pierced billet 8, a core roll 11, a lower tapered roll 12 and an upper tapered roll 13, wherein the special-shaped design of the main roll 10 and the core roll 11 is designed according to the outer diameter and the inner diameter of the final finished product of the splayed ring forging;
wherein the radial feed speed V of the core roller 11 Core rolling =0.5mm/s；
Wherein the controlled speed linear velocity V of the main roller 10 Main-rolling =0.5m/s；
The rough blank 8 is rolled once to form a rough blank a14, the size design of the rough blank a14 is shown in figure 13, wherein B An expanded wall thickness =
H is the ring height of the finished product, and phi D can be inquired through UG three-dimensional modeling One-pass rolling Value, in one rolling process, rolling stop condition is phi D Stop at one time =ΦD One-pass rolling ；
Step eight: secondary rolling
Obtaining a pre-rolled piece which can be used for final rolling forming through the seventh step, and realizing the forming of the final ring forging in the eighth step, wherein the rolling process is shown as fig. 14, the rolling part comprises a main roller 10, a rough blank a14 after one-time rolling, a core roller 11, a lower conical roller 12 and an upper conical roller 13, and the special-shaped design of the main roller 10 and the core roller 11 is designed according to the outer diameter and the inner diameter of the final finished product of the splayed ring forging;
wherein the radial feed speed V of the core roller 11 Core two-pass rolling =0.5mm/s；
Wherein the controlled speed linear velocity V of the main roller 10 Main two rolling =0.7m/s；
The distance between the conical rollers is H;
rolling ofStopping condition is D Outside diameter min 。
Claims (2)
1. A forming method of a large-dip-angle splayed titanium alloy special-shaped ring forging is characterized by comprising the following steps of: the forming method comprises the following steps:
the method comprises the following steps: designing a pressing block and a small semicircular horse rod for primary reaming;
according to the concrete size of the profiled ring to be finally formed, marking the external diameter D of the profiled ring Outside diameter min 、D Inner diameter min Ring height H and angle of inclination α;
designing the size structure of a small semicircular horse rod and a pressing block for chambering of the prefabricated blank according to the inclination angle alpha of the ring forging;
small semicircular horse rod structure design
Wherein alpha is 1 =（α-5）/2
D 1 =D Punching hole -10
L Work by ≥2H
H Trough ≥10
L Total length of ≥1.5×B Horse rack
Structure design of pressing block for primary reaming
Wherein alpha is 1 =（α-5）/2；
L Work by ≥2H
L' Total length of ≥L Work by
B Work in ≥100；
Step two: designing a pressing block and a large semicircular rod for secondary reaming;
designing the size structure of a small semicircular horse rod and a pressing block for chambering of the prefabricated blank according to the inclination angle alpha of the ring forging;
structural design of large semicircular horse rod
Wherein alpha is 2 =α-5
H Half of =D Punching hole +20
H' Half of = D Punching hole -20
B Most of the time = H Half of
L Work by ≥2H
H Trough ≥10
L Total length of ≥1.5×B Horse frame
Structure design of pressing block for secondary reaming
Wherein alpha is 2 =α-5
L Work by ≥2H
L' Total length of ≥L Work by
B Work by ≥100；
Step three: upsetting and punching;
according to the volume required by the metal raw material required by the forming of the special-shaped ring forging, after the specification of the original titanium alloy bar is selected, a primary blank making step is carried out, wherein the primary blank making step is designed as primary upsetting → secondary upsetting → punching;
wherein the relation between the selection of the blank diameter specification and the blank height H meets the following requirements:
1.5D material ≥H Material ≥D Material
Designing the upsetting step pressing amount:
H heading 2 =H-10
H Heading 1 =H Material -（H Material -H Heading 2 ）×0.6=0.4 H Material +0.6 H Heading 2
Design of punch diameter: (D) Blank /2）≥D Punching hole ≥（D Blank /3）；
Step four: one-step hole enlarging
And (3) obtaining a punched cake blank through the third step, carrying out a hole expanding process step, and utilizing a hole expanding pressing block and a small semicircular horse bar tool designed in the first step to enable the small semicircular horse bar to pass through a clamping groove H on a hydraulic quick forging machine Device for placing Is fixed on a horse frame B Horse frame The punched biscuit is sleeved on a small semicircular horse rod, a primary reaming pressing block is arranged below a hammer anvil surface on a hydraulic fast-segment machine, and a biscuit ring is fixedly controlled to transversely shift in the reaming process through an operating manipulator in the lateral direction of the biscuit so as to ensure the forming of an splayed inclination angle of a forge piece;
the design of the blank size after once reaming, wherein the inner diameter size and the control wall thickness of once reaming need to satisfy:
D an expanded inner hole ≥( 
+10)
And satisfy B One-time expanding ≤B Blank -（B Blank -
）×0.6=0.4B Blank +B Wall thickness ；
Step five: secondary reaming
And C, utilizing the secondary reaming pressing block and the large semicircular horse bar tool designed in the step II to perform primary reaming on the rough blank obtained in the step IV, wherein the large semicircular horse bar passes through the clamping groove H on the hydraulic quick forging machine Device for placing Is fixed on a horse frame B Horse frame The rough blank after primary reaming is sleeved on a large semicircular horse rod, a secondary reaming pressing block is arranged below a hammer anvil surface on a hydraulic fast-segment machine, and the transverse offset of a rough blank ring in the reaming process is fixedly controlled by operating a manipulator in the lateral direction of the rough blank so as to ensure that the splayed inclination angle of the forge piece is further formed;
the design of the billet size after the secondary reaming, wherein the secondary reaming's internal diameter size and control wall thickness need satisfy:
D double-expanded inner hole ≥(D Core roller +10)
(wherein D Core roller For rolling the maximum diameter of the core roller for profile rolling
And B Secondary expanding = 
；
Step six: shaping of
Obtaining a deformed ring blank subjected to secondary hole expansion through the fifth step, wherein the height of the blank needs to be regulated to the design height H value of a finished product forged piece of the deformed ring through shaping due to the fact that the blank is expanded in the height direction of the ring in the hole expansion process; in consideration of the problem, the inclination angle reservation design is already made on the twice reaming tool, and vertical pressing leveling can be directly carried out in the height direction; the height of the blank after secondary hole expansion is H Rough blank By means of forging pressesShaping the upper and lower flat anvil surfaces of the equipment to reach a target value H, wherein an included angle alpha is formed between the outer diameter of the shaped blank and the outer diameter before shaping 3 Empirical value of alpha 3 ≈5°；
Step seven: one-pass rolling
Obtaining a special-shaped preform which can be used for rolling through the sixth step, and further forming in the seventh rolling step; the rolling process comprises a main roller, a rough blank, a core roller, a lower conical roller and an upper conical roller, wherein the special-shaped design of the main roller and the core roller is designed according to the outer diameter and the inner diameter of the final finished splayed ring forging;
wherein the radial feed speed V of the core roller Core rolling =0.5mm/s；
Wherein the linear velocity V of the main roller Main-rolling =0.5m/s；
Size design of the pierced billet after one-time rolling, wherein B An expanded wall thickness =
H is the ring height of the finished product, and phi D can be inquired through UG three-dimensional modeling One-pass rolling Value, in one rolling process, rolling stop condition is phi D Stop at one time =ΦD One-pass rolling ；
Step eight: secondary rolling
Obtaining a pre-rolled piece which can be used for final rolling forming through the seventh step, and realizing the forming of the final ring forging in the eighth step, wherein the rolling part comprises a main roller, a rough blank, a core roller, a lower conical roller and an upper conical roller, and the special-shaped design of the main roller and the core roller is designed according to the outer diameter and the inner diameter profile of the final finished product of the splayed ring forging;
wherein the radial feed speed V of the core roller Core two-pass rolling =0.5mm/s；
Wherein the controlled speed linear velocity V of the main roller Main two rolling =0.7m/s；
The distance between the conical rollers is H;
rolling stop condition is D Outside diameter min 。
2. The forming method of the titanium alloy special-shaped ring forging with the large inclination angle in the shape like the Chinese character 'ba' according to claim 1, is characterized in that: the forming method is suitable for manufacturing the splayed titanium alloy special-shaped ring forging with the large inclination angle of 15-30 degrees.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1022139A (en) * | 1964-04-13 | 1966-03-09 | Darwin Steward Cox | A method of manufacturing generally cupped and cylindrically shaped parts |
| CN101279345A (en) * | 2008-04-23 | 2008-10-08 | 贵州安大航空锻造有限责任公司 | Rolling forming method of titanium alloy special-shaped ring forging |
| CN104191168A (en) * | 2014-08-04 | 2014-12-10 | 贵州航宇科技发展股份有限公司 | Large specially-shaped titanium alloy forging forming method |
| CN104191166A (en) * | 2014-08-04 | 2014-12-10 | 贵州航宇科技发展股份有限公司 | Rolling forming method of aluminum alloy high-tube thin-wall rings |
| CN111112526A (en) * | 2019-12-09 | 2020-05-08 | 贵州航宇科技发展股份有限公司 | Manufacturing method of IN718 alloy axial asymmetric multi-flange casing ring piece |
| US20220097123A1 (en) * | 2020-11-20 | 2022-03-31 | Xi'an Space Engine Company Limited | METHOD FOR FORMING LARGE-SIZE QCr0.8 ALLOY TAPERED CYLINDRICAL RING |
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2022
- 2022-11-02 CN CN202211358992.6A patent/CN115647267A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1022139A (en) * | 1964-04-13 | 1966-03-09 | Darwin Steward Cox | A method of manufacturing generally cupped and cylindrically shaped parts |
| CN101279345A (en) * | 2008-04-23 | 2008-10-08 | 贵州安大航空锻造有限责任公司 | Rolling forming method of titanium alloy special-shaped ring forging |
| CN104191168A (en) * | 2014-08-04 | 2014-12-10 | 贵州航宇科技发展股份有限公司 | Large specially-shaped titanium alloy forging forming method |
| CN104191166A (en) * | 2014-08-04 | 2014-12-10 | 贵州航宇科技发展股份有限公司 | Rolling forming method of aluminum alloy high-tube thin-wall rings |
| CN111112526A (en) * | 2019-12-09 | 2020-05-08 | 贵州航宇科技发展股份有限公司 | Manufacturing method of IN718 alloy axial asymmetric multi-flange casing ring piece |
| US20220097123A1 (en) * | 2020-11-20 | 2022-03-31 | Xi'an Space Engine Company Limited | METHOD FOR FORMING LARGE-SIZE QCr0.8 ALLOY TAPERED CYLINDRICAL RING |
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