CN104148949A - Forming and prestress flattening method for steel plate with ultra wide width and small thickness error - Google Patents
Forming and prestress flattening method for steel plate with ultra wide width and small thickness error Download PDFInfo
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- CN104148949A CN104148949A CN201410287028.8A CN201410287028A CN104148949A CN 104148949 A CN104148949 A CN 104148949A CN 201410287028 A CN201410287028 A CN 201410287028A CN 104148949 A CN104148949 A CN 104148949A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
- F02K9/32—Constructional parts; Details not otherwise provided for
- F02K9/34—Casings; Combustion chambers; Liners thereof
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Abstract
The invention discloses a forming and prestress flattening method for a steel plate with ultra wide width and small thickness error. 1, a steel plate with narrow width is rolled, welded and annealed, and a thick-wall cylinder blank is formed; 2, a numerical control spinning machine with three spinning rollers is used for rolling the thick-wall cylinder blank into a thin-wall cylinder; 3, an anti-rotating ring on the thick-wall cylinder blank is cut, then the thin-wall cylinder is slit and flattened into the steel plate with ultra wide width, and the steel plate with ultra wide width is cut into a thin-wall cake steel plate; 4, the thin-wall cake steel plate is subjected to annealing treatment in ordinary vacuum protection, inert atmosphere protection or coating protection. When the steel plate is processed with the method, the processed steel plate can meet the manufacturing requirement for a front sealing end and a rear sealing end of an existing combustion chamber housing with a large size.
Description
Technical field
The present invention relates to the processing technique field of rocket chamber's shell cover steel plate special, refer to particularly shaping and the prestressing force flattening method of the special little thickness error steel plate of super wide cut of a kind of rocket chamber shell cover.
Background technology
Solid propellant rocket is the power set of aerospace craft, is made up of major parts such as burning chamber shell, propellant charge, jet pipe, igniters.Burning chamber shell is the key component in all-solid system, and the burning by propellant provides power for aircraft.Burning chamber shell by the welding of the parts such as front head, cylinder and rear head, heat treatment after machining form.Front head, rear head are load assemblies important on burning chamber shell, and igniter and thrust termination mechanism are installed on front head, and jet pipe is installed on rear head.
Existing above-mentioned front head and rear head are less, adopt the steel plate (width criteria of steel plate is 2000mm referring to the Breadth Maximum of GB/T708 " size, profile, weight and the tolerance of cold-rolled steel sheet and steel band " regulation steel plate) of normal width can realize the making of front head and rear head.Then along with the development of solid propellant rocket, it is large that the front head of burning chamber shell and the size of rear head constantly become, the steel plate of existing standard width can not meet the making of front head and rear head, how produce and make front head and the required super wide cut of rear head, the steel plate of little thickness error by existing steel plate in a narrow margin, become industry problem demanding prompt solution.
Summary of the invention
Object of the present invention is exactly shaping and the prestressing force flattening method that the little thickness error steel plate of a kind of super wide cut will be provided, and adopts this method to process steel plate, can make the steel plate after processing meet the manufacture of existing large scale burning chamber shell front head and rear head.
For realizing this object, shaping and the prestressing force flattening method of the designed little thickness error steel plate of super wide cut of the present invention, is characterized in that, it comprises the steps:
Step 1: be B by width, thickness is t
0length is that the steel plate in a narrow margin of L is rolled up circle processing, and the head and the tail of steel plate are in a narrow margin welded, then carry out annealing in process, form thick cyclinder blank, the length L of above-mentioned steel plate is in a narrow margin L>=nd+ Δ+100mm, wherein, n is positive integer, and d is the diameter of rocket chamber's shell cover drawing process designing requirement, Δ is the amount of contraction of weld seam after the head and the tail welding, annealing in process of steel plate in a narrow margin, and above-mentioned annealing in process can be improved the processing performance of the follow-up mould pressing of blank material;
Step 2: on above-mentioned thick cyclinder blank, expansion controlling ring-shaped insert is set, and with three common spinning roller cnc spinning machines, above-mentioned thick cyclinder blank is spun into thickness, length and girth and all meets the thin cylinder of rocket chamber's shell cover drawing process designing requirement, above-mentioned expansion controlling ring-shaped insert is used for preventing that thick cyclinder blank is in the time carrying out above-mentioned spinning processing, occur rotation with respect to three spinning roller cnc spinning machines, the width B of the steel plate in a narrow margin in step 1 is B>=(t
1d+t
1 2) ÷ (t
0d+t
0 2) × (d+200)+50mm, wherein, t
1for the thickness of described thin cylinder, t
0for the thickness of steel plate in a narrow margin, the diameter of bore that D is thin cylinder, d is the diameter of rocket chamber's shell cover drawing process designing requirement;
Step 3: by the expansion controlling ring-shaped insert excision on thick cyclinder blank, then above-mentioned thin cylinder being cut open and being flattened into length is L
1width is B
1super wide cut steel plate, the compression that the tension producing at thin cylinder outer wall while utilizing mould pressing and inwall produce, after weld seam is cut open, stress release produces deformation thin cylinder is shown laid flat in to super wide cut steel plate naturally, cuts flattening efficiency and quality open, and reduce costs to improve thin cylinder; Then above-mentioned super wide cut steel plate is cut into diameter and meets the thin-walled cake steel plate of rocket chamber's shell cover drawing process designing requirement;
Step 4: thin-walled cake steel plate is carried out to annealing in process in common vacuum protection or inert atmosphere protection or coating protection; in annealing in process process, thin-walled cake steel plate is heated to 680 DEG C～720 DEG C and be incubated 6h～8h; be shaped and prestressing force flatten after super wide cut, little thickness error steel plate, above-mentioned processing can improve the processing performance of follow-up drawing and forming material.
Further, the thickness t of described steel plate in a narrow margin
0thickness t with thin cylinder
1pass be 25%≤(t
0-t
1) ÷ t
0× 100%≤50%, good to ensure a time mould pressing.
Further, the head and the tail weld of described steel plate is in a narrow margin straight weld, and this straight weld adopts the welding of PLASMA ARC WELDING equipment, and this mode is not opened vertical masonry joint groove, and forming a solder does not need flaw detection, does not need repair welding, can significantly improve processing and welding efficiency;
Further, fixedly sleeved one end with thick cyclinder blank outer wall of described expansion controlling ring-shaped insert.
Further, in the annealing in process of described step 1, the steel plate in a narrow margin after head and the tail welding is heated to 550 DEG C～580 DEG C and be incubated 60min～120min.
Further, in described step 1, the welding seam grinding of the thick cyclinder blank forming after annealing in process is become to flush with thick cyclinder blank body, and thick cyclinder blank surfaces externally and internally is cleaned out, be beneficial to like this precision and the quality that improve mould pressing.
Further, in described step 2, the outside diameter d of three spinning roller cnc spinning machines
1than the little 1～1.5mm of diameter of bore D of thin cylinder, to ensure filling mould convenience, shaping reliably, the outside diameter d of described three spinning roller cnc spinning machines
1deviation from cylindrical form should be not more than 0.1mm, to ensure that wall thickness (being the follow-up thickness of the making cake steel plate) conformity error of thin cylinder is not more than 0.1mm after mould pressing; The wall thickness deflection that adopts the thin cylinder after three spinning roller cnc spinning machine rotary press modellings is at ± 0.05mm.
Further, in described step 3, above-mentioned thin cylinder is cut open in the process of flattening, first thin cylinder is cut open from commissure, while cutting open, first in the middle of the weld seam of thin cylinder, cut open, the weld seam two ends of thin cylinder stay 150～200mm temporarily not cut open, then the thin cylinder of cutting open in the middle of weld seam 4 use length are greater than after the soft nylon rope binding of 2.5 times of thin cylinder 4 girths, then the weld seam of the weld seam two ends 150～200mm of thin cylinder temporarily not being cut open is cut open, and unclamp gradually soft nylon rope, prevent that steel plate spring from hurting sb.'s feelings, allow thin cylinder naturally be shown laid flat in super wide cut steel plate.
Further, when above-mentioned super wide cut steel plate being cut into diameter in described step 3 and meeting the thin-walled cake steel plate of rocket chamber's shell cover drawing process designing requirement, avoid weld seam and apart from weld edge 15mm with interior heat affected area, to ensure the good drawing performance of seal head material.
Beneficial effect of the present invention is: adopt steel plate in a narrow margin to roll up circle processing, and after head and the tail welding, mould pressing is super wide cut, little thickness error sheet metal, meet the requirement of large-sized burning chamber shell end socket to steel plate width and thickness error, solved rocket chamber's shell cover and be shaped and need to surpass a raw material supply difficult problem for wide cut, little thickness error steel plate.The shaping and the prestressing force that adopt method provided by the present invention to surpass wide cut, little thickness error steel plate flatten processing, have the following advantages:
One, the compression that the tension producing at thin cylinder outer wall while utilizing mould pressing and inwall produce, after weld seam is cut open, stress release generation deformation flattens thin cylinder naturally, has improved thin cylinder and has flattened efficiency and quality, and reduced processing cost;
Its two, thick cyclinder blank vertical masonry joint adopts PLASMA ARC WELDING moulding, square groove, forming a solder, does not need flaw detection, does not need repair welding, processing and welding efficiency are high;
Its three, the present invention adopts shear spinning shaping steel plate, THICKNESS CONTROL is accurate, be less than ± 0.15mm of error.
Brief description of the drawings
Fig. 1 is the structural representation of thick cyclinder blank;
Fig. 2 is structural representation after super wide cut thin cylinder spinning;
Fig. 3 is cutting in the middle of super wide cut thin cylinder and nylon rope binding schematic diagram;
Fig. 4 is the rear schematic diagram of super wide cut thin cylinder two ends cutting;
Fig. 5 is rear schematic diagram for super wide cut thin cylinder prestressing force flattens;
Fig. 6 is the rear schematic diagram of super wide cut thin-walled cake steel plate cutting.
Wherein, 1-thick cyclinder blank, 2-expansion controlling ring-shaped insert, 3-straight weld, 4-thin cylinder, 5-soft nylon rope, 6-super wide cut steel plate, 7-thin-walled cake steel plate.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
As shown in Fig. 1～6:
Embodiment 1: be the rocket chamber shell cover of Φ 1400mm for certain aircraft diameter, the diameter d of rocket chamber's shell cover drawing process designing requirement is Φ 1900mm, the thickness t of thin cylinder 4
1for 4.1mm, it is as follows that the shaping of its super wide cut, little thickness error steel plate and prestressing force flatten process:
Step 1: be that B is (according to B>=(t by width
1d+t
1 2) ÷ (t
0d+t
0 2) × (d+200)+50mm formula is calculated as 1483mm, selects original width B=1500mm according to GB/T709 " dimension, shape, weight and tolerances for hot-rolled steel plates and sheets ", wherein, and t
1for the thickness of described thin cylinder 4 is 4.1mm, t
0for the thickness of steel plate is in a narrow margin 6mm, D is that the diameter of bore of thin cylinder 4 is Φ 1400mm, and d is that the diameter of rocket chamber's shell cover drawing process designing requirement is Φ 1900mm), thickness is t
0(according to the thickness t of described steel plate in a narrow margin
0thickness t with thin cylinder 4
1relational expression 25%≤(t
0-t
1) ÷ t
0× 100%≤50%, after calculating, select t according to GB/T709 " dimension, shape, weight and tolerances for hot-rolled steel plates and sheets "
0for 6mm), length is that L (is calculated as L>=3902mm according to L>=nd+ Δ+100, the spinning mandrel fit-up gap that is Φ 1400mm according to external diameter requires cutting length L to be defined as 4422mm, wherein, n is chosen as 2, d is that the diameter of rocket chamber's shell cover drawing process designing requirement is Φ 1900mm, Δ is the head and the tail welding of steel plate in a narrow margin, after annealing in process, the amount of contraction of weld seam is 2mm) steel plate in a narrow margin roll up circle process, and the head and the tail of steel plate are in a narrow margin welded, then adopt 550 DEG C of insulation 60min to carry out stress relief annealing processing, form thick cyclinder blank 1, the welding seam grinding of the thick cyclinder blank 1 forming after annealing in process is become to flush with thick cyclinder blank 1 body, and thick cyclinder blank 1 surfaces externally and internally is cleaned out,
Step 2: it is the expansion controlling ring-shaped insert 2 of 30mm that width is set on above-mentioned thick cyclinder blank 1, and with three common spinning roller cnc spinning machines, above-mentioned thick cyclinder blank 1 is spun into thickness, length and girth and all meets the thin cylinder 4 of rocket chamber's shell cover drawing process designing requirement, above-mentioned expansion controlling ring-shaped insert 2 is for preventing that thick cyclinder blank 1 from, in the time carrying out above-mentioned spinning processing, occurring rotation with respect to three spinning roller cnc spinning machines;
Step 3: the expansion controlling ring-shaped insert on thick cyclinder blank 12 is excised, and then above-mentioned thin cylinder 4 being cut open and being flattened into length is L
1width is B
1super wide cut steel plate 6, and above-mentioned super wide cut steel plate 6 is cut into diameter and meets the thin-walled cake steel plate 7 of rocket chamber's shell cover drawing process designing requirement;
Step 4: thin-walled cake steel plate 7 is carried out to annealing in process in common vacuum protection; in annealing in process process, thin-walled cake steel plate (7) is heated to 680 DEG C and be incubated 6h, is shaped and super wide cut, the little thickness error steel plate of prestressing force after flattening.The steel plate width shaping is greater than 2100mm, be less than ± 0.10mm of thickness of slab error, and end socket drawing and forming is good.
In the step 1 of embodiment 1, the head and the tail weld of described steel plate is in a narrow margin straight weld 3, and this straight weld 3 adopts the welding of PLASMA ARC WELDING equipment.
The fixedly sleeved one end with thick cyclinder blank 1 outer wall of expansion controlling ring-shaped insert 2 described in the step 2 of embodiment 1.
The outside diameter d of three spinning roller cnc spinning machines described in the step 2 of embodiment 1
1than the little 1mm of diameter of bore D of thin cylinder 4, the outside diameter d of described three spinning roller cnc spinning machines
1deviation from cylindrical form should be not more than 0.1mm, the wall thickness deflection that adopts the thin cylinder 4 after three spinning roller cnc spinning machine rotary press modellings is at ± 0.05mm;
In the step 3 of embodiment 1, above-mentioned thin cylinder 4 is cut open in the process of flattening, first thin cylinder 4 is cut open from weld seam 3, while cutting open, first in the middle of the weld seam 3 of thin cylinder 4, cut open; weld seam 3 two ends of thin cylinder 4 stay 150mm temporarily not cut open; after the soft nylon rope 5 that then the middle weld seam 3 thin cylinder 4 use length of cutting open is greater than to 2.5 times of thin cylinder 4 girths bundlees; the weld seam of then weld seam of thin cylinder 43 two ends 150mm temporarily not being cut open is cut open; and unclamp gradually soft nylon rope 5, allow thin cylinder 4 naturally be shown laid flat in super wide cut steel plate 6.
When above-mentioned super wide cut steel plate 6 being cut into diameter in the step 3 of embodiment 1 and meeting the thin-walled cake steel plate 7 of rocket chamber's shell cover drawing process designing requirement, avoid weld seam 3 and apart from weld seam 3 edge 15mm with interior heat affected area, to ensure the good drawing performance of seal head material.
Embodiment 2: be the rocket chamber shell cover of Φ 1600mm for certain aircraft diameter, the diameter d of rocket chamber's shell cover drawing process designing requirement is Φ 2150mm, the thickness t of thin cylinder 4
1for 4.5mm, it is as follows that the shaping of its super wide cut, little thickness error steel plate and prestressing force flatten process:
Step 1: be that B is (according to B>=(t by width
1d+t
1 2) ÷ (t
0d+t
0 2) × (d+200)+50mm formula is calculated as 1369mm, selects original width B=1400mm according to GB/T709 " dimension, shape, weight and tolerances for hot-rolled steel plates and sheets ", wherein, and t
1for the thickness of described thin cylinder 4 is 4.5mm, t
0for the thickness of steel plate is in a narrow margin 8mm, D is that the diameter of bore of thin cylinder 4 is Φ 1600mm, and d is that the diameter of rocket chamber's shell cover drawing process designing requirement is Φ 2150mm), thickness is t
0(according to the thickness t of described steel plate in a narrow margin
0thickness t with thin cylinder 4
1relational expression 25%≤(t
0-t
1) ÷ t
0× 100%≤50%, after calculating, select t according to GB/T709 " dimension, shape, weight and tolerances for hot-rolled steel plates and sheets "
0for 8mm), length is that L (is calculated as L>=4402mm according to L>=nd+ Δ+100, the spinning mandrel fit-up gap that is Φ 1600mm according to external diameter requires cutting length L to be defined as 5058.4mm, wherein, n is chosen as 2, d is that the diameter of rocket chamber's shell cover drawing process designing requirement is Φ 2150mm, Δ is the head and the tail welding of steel plate in a narrow margin, after annealing in process, the amount of contraction of weld seam is 2mm) steel plate in a narrow margin roll up circle process, and the head and the tail of steel plate are in a narrow margin welded, then adopt 580 DEG C of insulation 120min to carry out stress relief annealing processing, form thick cyclinder blank 1, the welding seam grinding of the thick cyclinder blank 1 forming after annealing in process is become to flush with thick cyclinder blank 1 body, and thick cyclinder blank 1 surfaces externally and internally is cleaned out,
Step 2: it is the expansion controlling ring-shaped insert 2 of 50mm that width is set on above-mentioned thick cyclinder blank 1, and with three common spinning roller cnc spinning machines, above-mentioned thick cyclinder blank 1 is spun into thickness, length and girth and all meets the thin cylinder 4 of rocket chamber's shell cover drawing process designing requirement, above-mentioned expansion controlling ring-shaped insert 2 is for preventing that thick cyclinder blank 1 from, in the time carrying out above-mentioned spinning processing, occurring rotation with respect to three spinning roller cnc spinning machines;
Step 3: the expansion controlling ring-shaped insert on thick cyclinder blank 12 is excised, and then above-mentioned thin cylinder 4 being cut open and being flattened into length is L
1width is B
1super wide cut steel plate 6, and above-mentioned super wide cut steel plate 6 is cut into diameter and meets the thin-walled cake steel plate 7 of rocket chamber's shell cover drawing process designing requirement;
Step 4: thin-walled cake steel plate 7 is carried out to annealing in process in common coating protection; in annealing in process process, thin-walled cake steel plate (7) is heated to 720 DEG C and be incubated 8h, is shaped and super wide cut, the little thickness error steel plate of prestressing force after flattening.The steel plate width shaping is greater than 2400mm, be less than ± 0.15mm of thickness of slab error, and end socket drawing and forming is good.
In the step 1 of embodiment 2, the head and the tail weld of described steel plate is in a narrow margin straight weld 3, and this straight weld 3 adopts the welding of PLASMA ARC WELDING equipment.
The fixedly sleeved one end with thick cyclinder blank 1 outer wall of expansion controlling ring-shaped insert 2 described in the step 2 of embodiment 2.
The outside diameter d of three spinning roller cnc spinning machines described in the step 2 of embodiment 2
1than the little 1.5mm of diameter of bore D of thin cylinder 4, the outside diameter d of described three spinning roller cnc spinning machines
1deviation from cylindrical form should be not more than 0.1mm, the wall thickness deflection that adopts the thin cylinder 4 after three spinning roller cnc spinning machine rotary press modellings is at ± 0.05mm;
In the step 3 of embodiment 2, above-mentioned thin cylinder 4 is cut open in the process of flattening, first thin cylinder 4 is cut open from weld seam 3, while cutting open, first in the middle of the weld seam 3 of thin cylinder 4, cut open; weld seam 3 two ends of thin cylinder 4 stay 200mm temporarily not cut open; after the soft nylon rope 5 that then the middle weld seam 3 thin cylinder 4 use length of cutting open is greater than to 2.5 times of thin cylinder 4 girths bundlees; the weld seam of then weld seam of thin cylinder 43 two ends 200mm temporarily not being cut open is cut open; and unclamp gradually soft nylon rope 5, allow thin cylinder 4 naturally be shown laid flat in super wide cut steel plate 6.
When above-mentioned super wide cut steel plate 6 being cut into diameter in the step 3 of embodiment 2 and meeting the thin-walled cake steel plate 7 of rocket chamber's shell cover drawing process designing requirement, avoid weld seam 3 and apart from weld seam 3 edge 15mm with interior heat affected area, to ensure the good drawing performance of seal head material.
The content that this description is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (9)
1. the shaping of the little thickness error steel plate of super wide cut and a prestressing force flattening method, is characterized in that, it comprises the steps:
Step 1: be B by width, thickness is t
0length is that the steel plate in a narrow margin of L is rolled up circle processing, and the head and the tail of steel plate are in a narrow margin welded, then carry out annealing in process, form thick cyclinder blank (1), the length L of above-mentioned steel plate is in a narrow margin L>=nd+ Δ+100mm, wherein, n is positive integer, and d is the diameter of rocket chamber's shell cover drawing process designing requirement, and Δ is the amount of contraction of weld seam after the head and the tail welding, annealing in process of steel plate in a narrow margin;
Step 2: expansion controlling ring-shaped insert (2) is set on above-mentioned thick cyclinder blank (1), and with three common spinning roller cnc spinning machines, above-mentioned thick cyclinder blank (1) is spun into thickness, length and girth and all meets the thin cylinder (4) of rocket chamber's shell cover drawing process designing requirement, above-mentioned expansion controlling ring-shaped insert (2) is for preventing that thick cyclinder blank (1) is in the time carrying out above-mentioned spinning processing, occur rotation with respect to three spinning roller cnc spinning machines, the width B of the steel plate in a narrow margin in step 1 is B>=(t
1d+t
1 2) ÷ (t
0d+t
0 2) × (d+200)+50mm, wherein, t
1for the thickness of described thin cylinder (4), t
0for the thickness of steel plate in a narrow margin, D is the diameter of bore of thin cylinder (4), and d is the diameter of rocket chamber's shell cover drawing process designing requirement;
Step 3: by expansion controlling ring-shaped insert (2) excision on thick cyclinder blank (1), then above-mentioned thin cylinder (4) being cut open and being flattened into length is L
1width is B
1super wide cut steel plate (6), the compression that the tension producing at thin cylinder outer wall while utilizing mould pressing and inwall produce, after weld seam is cut open, stress release produces deformation thin cylinder is shown laid flat in to super wide cut steel plate naturally, then above-mentioned super wide cut steel plate (6) is cut into diameter and meet the thin-walled cake steel plate (7) of rocket chamber's shell cover drawing process designing requirement;
Step 4: thin-walled cake steel plate (7) is carried out to annealing in process in common vacuum protection or inert atmosphere protection or coating protection; in annealing in process process, thin-walled cake steel plate (7) is heated to 680 DEG C～720 DEG C and be incubated 6h～8h, is shaped and super wide cut, the little thickness error steel plate of prestressing force after flattening.
2. shaping and the prestressing force flattening method of the little thickness error steel plate of super wide cut according to claim 1, is characterized in that: the thickness t of described steel plate in a narrow margin
0thickness t with thin cylinder (4)
1pass be 25%≤(t
0-t
1) ÷ t
0× 100%≤50%.
3. shaping and the prestressing force flattening method of the little thickness error steel plate of super wide cut according to claim 1, it is characterized in that: the head and the tail weld of described steel plate is in a narrow margin straight weld (3), this straight weld (3) adopts the welding of PLASMA ARC WELDING equipment.
4. shaping and the prestressing force flattening method of the little thickness error steel plate of super wide cut according to claim 1, is characterized in that: the fixedly sleeved one end with thick cyclinder blank (1) outer wall of described expansion controlling ring-shaped insert (2).
5. shaping and the prestressing force flattening method of the little thickness error steel plate of super wide cut according to claim 1, is characterized in that: in the annealing in process of described step 1, the steel plate in a narrow margin after head and the tail welding is heated to 550 DEG C～580 DEG C and be incubated 60min～120min.
6. shaping and the prestressing force flattening method of the little thickness error steel plate of super wide cut according to claim 1, it is characterized in that: in described step 1, the welding seam grinding of the thick cyclinder blank (1) forming after annealing in process is become to flush with thick cyclinder blank (1) body, and thick cyclinder blank (1) surfaces externally and internally is cleaned out.
7. shaping and the prestressing force flattening method of the little thickness error steel plate of super wide cut according to claim 1, is characterized in that: in described step 2, and the outside diameter d of three spinning roller cnc spinning machines
1than the little 1～1.5mm of diameter of bore D of thin cylinder (4), the outside diameter d of described three spinning roller cnc spinning machines
1deviation from cylindrical form should be not more than 0.1mm, the wall thickness deflection that adopts the thin cylinder (4) after three spinning roller cnc spinning machine rotary press modellings is at ± 0.05mm.
8. shaping and the prestressing force flattening method of the little thickness error steel plate of super wide cut according to claim 1, it is characterized in that: in described step 3, above-mentioned thin cylinder (4) is cut open in the process of flattening, first thin cylinder (4) is cut open from weld seam (3), while cutting open, first in the middle of the weld seam (3) of thin cylinder (4), cut open, weld seam (3) two ends of thin cylinder (4) stay 150～200mm temporarily not cut open, then thin cylinder (4) length of cutting open in the middle of weld seam (3) is greater than after soft nylon rope (5) binding of 2.5 times of thin cylinders (4) girth, then the weld seam of the weld seam of thin cylinder (4) (3) two ends 150～200mm temporarily not being cut open is cut open, and unclamp gradually soft nylon rope (5), allow thin cylinder (4) naturally be shown laid flat in super wide cut steel plate (6).
9. shaping and the prestressing force flattening method of the little thickness error steel plate of super wide cut according to claim 1, it is characterized in that: when above-mentioned super wide cut steel plate (6) being cut in described step 3 to diameter and meeting the thin-walled cake steel plate (7) of rocket chamber's shell cover drawing process designing requirement, avoid weld seam (3) and apart from weld seam (3) edge 15mm with interior heat affected area.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106584035A (en) * | 2016-12-26 | 2017-04-26 | 北京有色金属研究总院 | Preparation method of ultra-wide aluminum alloy sheet for formation of large curved component |
| CN110900120A (en) * | 2019-10-30 | 2020-03-24 | 太原科技大学 | Integral forming method of wide-width high-rib thin-wall metal wall plate |
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| DE102009016047A1 (en) * | 2009-04-02 | 2010-10-07 | Bayerische Motoren Werke Aktiengesellschaft | Method for manufacturing tubular chassis component i.e. tubular axle carrier, utilized for passenger car, involves forming connection opening in flat outlet plate, inserting thread or thread section into opening and deforming plate |
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| CN103418627A (en) * | 2013-07-18 | 2013-12-04 | 杭州博数土木工程技术有限公司 | Cold-drawing roll-welded steel pipe with small diameter-thickness ratio and combined die rotating drawing type pipe rolling equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106584035A (en) * | 2016-12-26 | 2017-04-26 | 北京有色金属研究总院 | Preparation method of ultra-wide aluminum alloy sheet for formation of large curved component |
| CN106584035B (en) * | 2016-12-26 | 2018-06-15 | 北京有色金属研究总院 | A kind of large-scale curved component forming ultra-wide aluminium alloy sheet preparation method |
| CN110900120A (en) * | 2019-10-30 | 2020-03-24 | 太原科技大学 | Integral forming method of wide-width high-rib thin-wall metal wall plate |
| CN110900120B (en) * | 2019-10-30 | 2022-04-08 | 太原科技大学 | Integral forming method of wide-width high-rib thin-wall metal wall plate |
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| CN104148949B (en) | 2016-08-24 |
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