CN109604407A - The accurate spinning processing method of minor diameter multi-step change wall thickness cylinder - Google Patents
The accurate spinning processing method of minor diameter multi-step change wall thickness cylinder Download PDFInfo
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- CN109604407A CN109604407A CN201811503101.5A CN201811503101A CN109604407A CN 109604407 A CN109604407 A CN 109604407A CN 201811503101 A CN201811503101 A CN 201811503101A CN 109604407 A CN109604407 A CN 109604407A
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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
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
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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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
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- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
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- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses the accurate spinning processing methods that a kind of minor diameter multi-step becomes wall thickness cylinder, first handle the forging-ring of spinning blank or steel tube anneal or spheroidizing, and rear smart car goes out spinning blank；Positive spinning mandrel installation, spinning blank is die-filling, and is fixed with tail top；Using three spinning-roller spinning machine of numerical control, the first passage spinning cogging；Stress relief annealing among spinning blank；Using three spinning-roller spinning machine of numerical control, the second passage spinning and third passage spinning；Stress relief annealing among spinning blank；Using three spinning-roller spinning machine of numerical control, four-pass is spun to 1~5 step and the 5th passage is spun to 6~9 steps, and the multi-step for obtaining meeting technique requirement becomes wall thickness cylinder.Spinning dimensional accuracy of the present invention is high, and stability is good, and process flow is simple, and easy to operate, stable product quality is controllable, and stock utilization is high, not only reduces production cost, but also can be shortened the production cycle.
Description
Technical field
The present invention relates to Solid Rocket Motor combustion chamber shell production technologies, become in particular to a kind of minor diameter multi-step
The accurate spinning processing method of wall thickness cylinder.
Background technique
Need to use burning chamber shell, filling power powder column in combustion chamber shell body, to start in solid propellant rocket
The flight of machine provides power.In Solid Rocket Motor combustion chamber shell manufacturing field, high strength steel is the current engine in China
The leading material of shell manufacturing field.In order to improve the strike range and penetration ability of missile armament, it is desirable that rocket engine is
Missile armament provides bigger range and speed, it is desirable that housing compact increases ammunition specific gravity, mention to reduce shell specific gravity
High weapon power.High strength steel has preferable elongation percentage and the contraction percentage of area in an annealed state, and plastic processing effect is good
Advantage can be used for cold conditions spinning.But the spinning for becoming wall thickness cylinder is always the technological difficulties of spinning.It is generally logical in actual production
The metal flow for accurately calculating and controlling in spinning process, adjusting process parameter and Roller locus are crossed, is realized to different piece ruler
Very little and position degree control, while must also consider to prevent due to many factors such as a variety of reductions, Roller locus in transition region
There are various defects in domain.
Certain existing model minor diameter multi-step becomes wall thickness elongated cylinder, is shaped using reversed spinning mode, process flow
Are as follows: forging base → spinning → intermediate annealing → spinning → spinning → intermediate annealing → spinning → spinning → inspection → ultrasound detection
→ annealing → oil sealing is packed and stored.Current this method has the following problems: 1) the cylinder length of bench size of reversed spinning, circle
Barrel is thick, diameter is difficult to meet required precision, and unstable product quality is only used for related flight test, cannot formally make
With；2) process flow is complicated；3) stock utilization is low.
Summary of the invention
It, should present invention aim to provide a kind of accurate spinning processing method of minor diameter multi-step change wall thickness cylinder
The product size precision of method is high, stable and controllable for quality, and stock utilization is high, and process flow is simple, both reduces and is produced into
This, and can be shortened the production cycle.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of minor diameter multi-step becomes the essence of wall thickness cylinder
Close spinning processing method, comprising the following steps:
1) go out forging-ring (1) by spinning process requirement smart car, then in the forging-ring (1) rear end weld closure plate and by the forging
Ring (1) clamping is in place；
2) forging-ring (1) is subjected to the first passage spinning cogging on cnc spinning machine；50~60rpm of the speed of mainshaft,
1.8~2.0mm/r of feed ratio, passage reduction 19~25% form rotation cylinder section (2)；
3) continue that rotation cylinder section (2) is carried out the second passage spinning on cnc spinning machine；The speed of mainshaft 50~
60rpm, 1.8~2.0mm/r of feed ratio, passage reduction 38.8% carry out third road after measuring thickness with sonigauge
Secondary spinning forms two rotations cylinder section (3)；
4) two rotation cylinder section (3) is then subjected to four-pass spinning on cnc spinning machine；Speed of mainshaft when spinning
50~60rpm, 1.8~2.0mm/r of feed ratio, passage reduction 26.6% form the three rotation cylinder sections with 1~5 step
(4)；
5) three rotation cylinder section (4) is finally subjected to the 5th passage spinning on cnc spinning machine；Speed of mainshaft when spinning
50~60rpm, 1.2~1.4mm/r of feed ratio, passage reduction 20%~49% form the minor diameter with 6~9 steps
Multi-step becomes wall thickness cylinder (5).
Further, in the step 2), after the completion of the first passage spinning cogging, rotation cylinder section (2) is demoulded, into
The intermediate stress relief annealing of row, eliminates rotary pressing processing stress.
Further, in the step 3), after the completion of third passage spinning, two rotation cylinder section (3) is demoulded, in progress
Between stress relief annealing, eliminate rotary pressing processing stress.
Further, in the step 1), the forging-ring (1) is using high strength steel or unimach forging-ring or heavy wall steel
Pipe, annealed or spheroidizing, grain size >=4 grade, unilateral wall thickness >=20mm, smart car rear surface roughness >=1.6 μm.
Further, in the step 2) and step 3), using biconical surface structure spinning roller, spinning roller hardness is HRC60-65,
Surface roughness is Ra1.6 μm, and rotary wheel working angle is 25 °, and spinning roller receding angle is 30 °, and radius of corner R is 8mm.
Further, in the step 4) and step 5), using biconical surface structure spinning roller, spinning roller hardness is HRC60-65,
Surface roughness is Ra1.6 μm, and rotary wheel working angle is 30 °, and spinning roller receding angle is 30 °, and radius of corner R is 8mm.
Further, in the step 2), intermediate stress relief annealing temperature be 600 DEG C ± 15 DEG C, soaking time be 60~
80min, it is air-cooled.
Further, in the step 3), intermediate stress relief annealing temperature be 600 DEG C ± 15 DEG C, soaking time be 60~
80min, it is air-cooled.
Further, in the step 1), forging-ring (1) annealing temperature be 600 DEG C ± 15 DEG C, soaking time be 40~
60min, it is air-cooled；Spheroidizing temperature is 750 DEG C ± 15 DEG C, and soaking time is 60~90min, furnace cooling.
Further, the minimum diameter of the minor diameter multi-step change wall thickness cylinder is 160.8~1600mm, minimal wall
Degree is 0.8~7.3mm, and draw ratio is 6~12, and long L is 300~2300mm.
Compared with prior art, the invention has the following advantages that
First, the minor diameter multi-step for solid rocket motor case of the invention becomes the essence of the thin-walled cylinder of wall thickness
Close spinning processing method has spinning dimensional accuracy height, the good advantage of stability compared with existing reversed spinning mode.
Second, spinning processing method of the invention need to only put into a set of positive spinning mandrel, equipment Wei Ding mechanism, rotation are utilized
It is excellent to press through journey mould rigid, cylinder straightness is high, and the spinning mandrel in existing reversed spinning mode does not utilize equipment tail
Mechanism is pushed up, spinning process mould rigid is bad, and core model bounce is big, and cylinder straightness is low.
Third, the method for the present invention process flow is simple, easy to operate, stable product quality is controllable, and stock utilization is high, both
Production cost is reduced, and can be shortened the production cycle.
Detailed description of the invention
Fig. 1 is forging-ring structural schematic diagram in embodiment 1.
Fig. 2 is a rotation cylinder segment structure schematic diagram in embodiment 1.
Fig. 3 is two rotation cylinder segment structure schematic diagram in embodiment 1.
Fig. 4 is three rotation cylinder segment structure schematic diagram in embodiment 1.
Fig. 5 is that 1 medium-small diameter multi-step of embodiment becomes wall thickness cylindrical structure schematic diagram.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments, convenient for more clearly understanding this
Invention, but they limiting the invention.
Embodiment 1
A kind of minor diameter multi-step for solid propellant rocket becomes the accurate spinning processing method of wall thickness cylinder, including
Following steps:
1) go out forging-ring (1) by spinning process requirement smart car: forging-ring is using high strength steel or unimach forging-ring or heavy wall
Steel pipe, annealed or spheroidizing, grain size >=4 grade, unilateral wall thickness >=20mm, smart car rear surface roughness reach 1.6 μm with
On, closure plate is welded afterwards；
2) core model installation and spinning roller mounting and adjusting, trial operation detection is qualified, and above-mentioned spinning blank (1) is installed on spinning core
On mould, be fixed on core model tail end, start tail top, axial movement, push blank by forging-ring (1) clamping in place.
3) start three spinning rollers, forging-ring (1) is subjected to the cogging of a time spinning on cnc spinning machine；The speed of mainshaft 50~
60rpm, 1.8~2.0mm/r of feed ratio, passage reduction passage reduction 19%~25% form rotation cylinder section (2)；
4) after the completion of a time spinning, to rotation cylinder section (2) demoulding, intermediate stress relief annealing is carried out, rotary pressing processing is eliminated
Stress；
5) rotation cylinder section (2) is die-filling again, start three spinning rollers, rotation cylinder section (2) is carried out the on cnc spinning machine
Two passage spinning；50~60rpm of the speed of mainshaft, 1.8~2.0mm/r of feed ratio, passage reduction 38.8% use ultrasonic thickness measurement
Instrument carries out third passage spinning after measuring thickness；Form two rotations cylinder section (3)；
6) after the completion of third passage spinning, to two rotation cylinder section (3) demouldings, intermediate stress relief annealing is carried out, spinning is eliminated and adds
Work stress；
7) two rotations cylinder section (3) are die-filling again, start three spinning rollers, and two rotations cylinder section (3) are carried out the 4th on cnc spinning machine
Passage spinning；50~60rpm of speed of mainshaft when spinning, 1.8~2.0mm/r of feed ratio, passage reduction 26.6%, formation has
Three rotations cylinder section (4) of 5 steps；
8) start three spinning rollers, three rotations cylinder section (4) are subjected to the 5th passage spinning on cnc spinning machine；Main shaft turns when spinning
Speed 50~60rpm, 1.2~1.4mm/r of feed ratio, passage reduction 20%~49% form the minor diameter multi-step of 9 steps
Become wall thickness cylinder (5).
The cylinder minimum diameter φ for the spinning cylinder that embodiment 1 is processed is 360.8mm, and the minimal wall degree δ of cylinder is
2.8mm, the draw ratio m of cylinder are 6.7, and the long L of cylinder is 2400mm, and the change wall thickness step n of cylinder is 9.
The spinning cylinder that embodiment 1 is processed is placed on technique car and is detected, testing result is as shown in table 1.
Table 1
| Serial number | Design requirement | Cylinder detected value | Conclusion |
| 1. | 1 length >=897 of step | 990 | It is qualified |
| 2. | 2 length 788 ± 3.5 of step | 790 | It is qualified |
| 3. | 3 length 733 ± 3 of step | 736 | It is qualified |
| 4. | 4 length 448 ± 2 of step | 450 | It is qualified |
| 5. | 5 length 130 ± 2 of step at two | 128 | It is qualified |
| 6. | 6 length 285 ± 3 of step | 286 | It is qualified |
| 7. | 7 length 505 ± 4 of step at two | 502 | It is qualified |
| 8. | Cylinder effective length >=2300 | 2400 | It is qualified |
| 9. | Wall thickness of cylinder 2.8+0.15-0.10, | 2.80~2.88 | It is qualified |
| 10. | Step wall thickness 4+0.30 0 | 4.06~4.16 | It is qualified |
| 11. | Step wall thickness 5.5 ± 0.2 | 5.45~5.55 | It is qualified |
| 12. | Step wall thickness 7.50-0.3 | 7.40~7.50 | It is qualified |
| 13. | Step wall thickness 4+0.30 0 | 4.19~4.25 | It is qualified |
| 14. | Step wall thickness 7.50-0.3 | 7.40~7.49 | It is qualified |
| 15. | Step wall thickness 5.5 ± 0.2 | 5.50~5.59 | It is qualified |
| 16. | Step wall thickness 4+0.30 0 | 4.18~4.24 | It is qualified |
| 17. | Cylinder minimum wall thickness (MINI W.) 2.8+0.15-0.10, | 2.84~2.88 | It is qualified |
| 18. | Cylinder minimum diameter φ 360.8 ± 0.5, | φ361 | It is qualified |
| 19. | Straightness 0.8/1000 | 0.6 | It is qualified |
As can be seen from Table 1, become the thin-walled cylinder ruler of wall thickness by the minor diameter multi-step of the method for the present invention institute spinning
Very little precision is high, and cylinder straightness is high, and stability is good.
Claims (10)
1. the accurate spinning processing method that a kind of minor diameter multi-step becomes wall thickness cylinder, it is characterised in that: the following steps are included:
1) go out forging-ring (1) by spinning process requirement smart car, then in the forging-ring (1) rear end weld closure plate and by the forging-ring
(1) clamping is in place；
2) forging-ring (1) is subjected to the first passage spinning cogging on cnc spinning machine；50~60rpm of the speed of mainshaft, feeding
Than 1.8~2.0mm/r, passage reduction 19~25% forms rotation cylinder section (2)；
3) continue that rotation cylinder section (2) is carried out the second passage spinning on cnc spinning machine；50~60rpm of the speed of mainshaft,
1.8~2.0mm/r of feed ratio, passage reduction 38.8% carry out third passage spinning after measuring thickness with sonigauge,
Form two rotations cylinder section (3)；
4) two rotation cylinder section (3) is then subjected to four-pass spinning on cnc spinning machine；The speed of mainshaft 50 when spinning~
60rpm, 1.8~2.0mm/r of feed ratio, passage reduction 26.6% form three rotations cylinder section (4) with 1~5 step；
5) three rotation cylinder section (4) is finally subjected to the 5th passage spinning on cnc spinning machine；The speed of mainshaft 50 when spinning~
60rpm, 1.2~1.4mm/r of feed ratio, passage reduction 20%~49% form minor diameter more with 6~9 steps
Rank becomes wall thickness cylinder (5).
2. minor diameter multi-step becomes the accurate spinning processing method of wall thickness cylinder according to claim 1, it is characterised in that: institute
It states in step 2), after the completion of the first passage spinning cogging, to rotation cylinder section (2) demoulding, carries out intermediate stress relief annealing, disappear
Except rotary pressing processing stress.
3. minor diameter multi-step becomes the accurate spinning processing method of wall thickness cylinder according to claim 1, it is characterised in that: institute
It states in step 3), after the completion of third passage spinning, to two rotations cylinder section (3) demoulding, carries out intermediate stress relief annealing, eliminate rotation
Press machining stress.
4. minor diameter multi-step becomes the accurate spinning processing method of wall thickness cylinder according to claim 1, it is characterised in that: institute
It states in step 1), the forging-ring (1) is moved back using high strength steel or unimach forging-ring or thick walled steel tube, annealed or nodularization
Fire, grain size >=4 grade, unilateral wall thickness >=20mm, smart car rear surface roughness >=1.6 μm.
5. minor diameter multi-step becomes the accurate spinning processing method of wall thickness cylinder according to claim 1, it is characterised in that: institute
It states in step 2) and step 3), using biconical surface structure spinning roller, spinning roller hardness is HRC60-65, and surface roughness is Ra1.6 μm,
Rotary wheel working angle is 25 °, and spinning roller receding angle is 30 °, and radius of corner R is 8mm.
6. minor diameter multi-step becomes the accurate spinning processing method of wall thickness cylinder according to claim 1, it is characterised in that: institute
It states in step 4) and step 5), using biconical surface structure spinning roller, spinning roller hardness is HRC60-65, and surface roughness is Ra1.6 μm,
Rotary wheel working angle is 30 °, and spinning roller receding angle is 30 °, and radius of corner R is 8mm.
7. minor diameter multi-step becomes the accurate spinning processing method of wall thickness cylinder according to claim 2, it is characterised in that: institute
It states in step 2), intermediate stress relief annealing temperature is 600 DEG C ± 15 DEG C, and soaking time is 60~80min, air-cooled.
8. minor diameter multi-step becomes the accurate spinning processing method of wall thickness cylinder according to claim 3, it is characterised in that: institute
It states in step 3), intermediate stress relief annealing temperature is 600 DEG C ± 15 DEG C, and soaking time is 60~80min, air-cooled.
9. minor diameter multi-step becomes the accurate spinning processing method of wall thickness cylinder according to claim 4, it is characterised in that: institute
It states in step 1), forging-ring (1) annealing temperature is 600 DEG C ± 15 DEG C, and soaking time is 40~60min, air-cooled；Spheroidizing temperature
It is 750 DEG C ± 15 DEG C, soaking time is 60~90min, furnace cooling.
10. minor diameter multi-step becomes the accurate spinning processing method of wall thickness cylinder according to claim 1, it is characterised in that:
The minor diameter multi-step becomes the minimum diameter of wall thickness cylinder as 160.8~1600mm, and minimal wall degree is 0.8~7.3mm, major diameter
Than being 6~12, long L is 300~2300mm.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076259A (en) * | 2019-05-29 | 2019-08-02 | 湖北三江航天江北机械工程有限公司 | The processing method of airborne pencil rocket burning chamber shell |
| CN110634721A (en) * | 2019-09-02 | 2019-12-31 | 安徽华东光电技术研究所有限公司 | Preparation method of molybdenum cup-shaped piece in cathode assembly of broadband millimeter wave traveling wave tube |
| CN111188697A (en) * | 2020-01-03 | 2020-05-22 | 湖北航天技术研究院总体设计所 | Solid rocket engine for electromagnetic ejection |
| CN112439825A (en) * | 2020-10-30 | 2021-03-05 | 湖北三江航天江北机械工程有限公司 | Cold-state forming method for nickel-based superalloy C250 steel thin-wall ellipsoid |
| CN112474983A (en) * | 2020-11-16 | 2021-03-12 | 西安航天动力机械有限公司 | Thin-wall cylinder with external annular boss and spinning process method thereof |
| CN113894198A (en) * | 2021-09-29 | 2022-01-07 | 中国航发动力股份有限公司 | Multi-pass flaring spinning forming process for high-temperature alloy cylindrical part |
| CN113976787A (en) * | 2021-10-09 | 2022-01-28 | 湖北三江航天江北机械工程有限公司 | Method for preparing wall-thickness-variable ultrathin ultrahigh-strength steel cylinder |
| CN114011940A (en) * | 2021-11-08 | 2022-02-08 | 四川航天长征装备制造有限公司 | Engine shell spinning method for eliminating surface cutter-receiving marks |
| CN114769405A (en) * | 2022-04-27 | 2022-07-22 | 西安航天动力机械有限公司 | Integral spinning processing method for variable-section cylindrical workpiece with spherical seal head |
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| CN110076259A (en) * | 2019-05-29 | 2019-08-02 | 湖北三江航天江北机械工程有限公司 | The processing method of airborne pencil rocket burning chamber shell |
| CN110634721A (en) * | 2019-09-02 | 2019-12-31 | 安徽华东光电技术研究所有限公司 | Preparation method of molybdenum cup-shaped piece in cathode assembly of broadband millimeter wave traveling wave tube |
| CN110634721B (en) * | 2019-09-02 | 2021-08-27 | 安徽华东光电技术研究所有限公司 | Preparation method of molybdenum cup-shaped piece in cathode assembly of broadband millimeter wave traveling wave tube |
| CN111188697A (en) * | 2020-01-03 | 2020-05-22 | 湖北航天技术研究院总体设计所 | Solid rocket engine for electromagnetic ejection |
| CN112439825A (en) * | 2020-10-30 | 2021-03-05 | 湖北三江航天江北机械工程有限公司 | Cold-state forming method for nickel-based superalloy C250 steel thin-wall ellipsoid |
| CN112474983B (en) * | 2020-11-16 | 2023-12-29 | 西安航天动力机械有限公司 | Thin-wall cylinder with annular boss outside and spinning process method thereof |
| CN112474983A (en) * | 2020-11-16 | 2021-03-12 | 西安航天动力机械有限公司 | Thin-wall cylinder with external annular boss and spinning process method thereof |
| CN113894198A (en) * | 2021-09-29 | 2022-01-07 | 中国航发动力股份有限公司 | Multi-pass flaring spinning forming process for high-temperature alloy cylindrical part |
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| CN113976787A (en) * | 2021-10-09 | 2022-01-28 | 湖北三江航天江北机械工程有限公司 | Method for preparing wall-thickness-variable ultrathin ultrahigh-strength steel cylinder |
| CN113976787B (en) * | 2021-10-09 | 2024-06-07 | 湖北三江航天江北机械工程有限公司 | Preparation method of variable-wall-thickness ultrathin ultrahigh-strength steel cylinder |
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Application publication date: 20190412 |